The type of electromagnetic radiation that has a wavelength just a bit shorter than that of visible light is ultraviolet (option A).
What is electromagnet radiation?Electromagnetic radiation is the radiation (quantized as photons) consisting of oscillating electric and magnetic fields oriented perpendicularly to each other, moving through space.
These radiation are all encompassed collectively as the electromagnetic spectrum, which is the entire range of wavelengths of all known electromagnetic radiations extending from gamma rays, to X-rays through visible light, infrared, to radio waves.
The components of the EM spectrum and their respective wavelength are as follows:
gamma-rays < 10-¹² mx-rays: 1 nm - 1 pmultraviolet : 400 nm - 1 nmvisible : 750 nm - 400 nmnear-infrared: 2.5 μm - 750 nminfrared: 25 μm - 2.5 μmmicrowave: 1 mm - 25 μmradio waves : > 1 mmTherefore, ultraviolet radiation is the component of EM spectrum that has a bit shorter wavelength than visible light.
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rank the three pucks in order of the magnitude of their acceleration, starting with the smallest.
The ranking of the pucks in order of magnitude of acceleration would be: B>A>C, with puck B having the greatest acceleration, followed by puck A and then puck C.
To rank the three hockey pucks in order of the magnitude of their acceleration, we need to consider the net force acting on each puck and their velocity. Since all three pucks are identical, their mass is the same, and the net force acting on each puck is 3N. Puck A is moving in the opposite direction of the force, thus the net force acting on it is in the opposite direction of its motion, resulting in a deceleration.
Puck B is instantaneously at rest, thus the net force acting on it will cause it to accelerate. Puck C is moving with a velocity of 7m/s at right angles to the force, thus the net force acting on it will cause it to move in a circular path, resulting in centripetal acceleration.
Complete Question :
Each of the three identical hockey pucks shown in the figure is acted on by a 3N force. Puck A moves with a speed of 7 m/s in a direction opposite to the force; puck B is instantaneously at rest; puck C moves with a speed of 7 m/s at right angles to the force.
Rank the three pucks in order of the magnitude of their acceleration, starting with the smallest.
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What image is produced by placing an object 4 cm away from a convex lens of focal length 8 cm? draw the ray diagram and discuss the obtain result
The image is formed 8cm in front of the lens and is a real image.
What is the nature of the image?We would have to remind ourselves that if we are looking at the lens then we have to be looking at any reflecting surface that we know. There are two kinds of lens that we have, we have the concave and the convex lens.
We know that the focal length of the convex lens is positive thus we have;
1/f = 1/u + 1/v
f = focal length
u = object distance
v = image distance
Thus;
1/8 = 1/4 - 1/v
1/v = 1/4 - 1/8
v = (0.25 - 0.125)^-1
v = 8 cm
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how far from the dog will the suitcase land? you can ignore air resistance.
The initial vertical velocity of the suitcase will be the same as the vertical velocity of the airplane at the time it was dropped. As a result, the suitcase will land 795 meters away from the dog.
What does Velocity mean?
Velocity is a measure of the rate at which an object's position changes over time. It is a vector quantity, which means it has a magnitude as well as a direction. Velocity is the product of speed and direction.
What does Vertica Velocity mean?
Vertica Velocity is a cloud-based analytics platform that enables users to quickly and easily analyze, visualize, and share their data. It allows users to easily build and deploy data-driven applications that can be used to make better decisions in real-time. It provides a wide range of features, such as interactive dashboards, drag-and-drop visualizations, and advanced analytics. With Vertica Velocity, users can quickly and easily access the insights they need to make better decisions.
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Part A
Treating the wing as an ideal spring, find the force constant of the wing.
Part B
Treating the wing as an ideal spring, find the energy stored in the wing when it is deflected.
Part C
What force must be applied to the tip of the wing to store twice the energy found in part (b)?
K=0.729 N/m is the correct answer .
What is Energy ?
Energy, in physics the ability to do work. It can exist in electrical, kinetic, thermal, electrical, chemical, nuclear, or various other forms. There is also heat and work. H. After transmission, energy is always referred to according to its nature. Thus, the heat transferred can become thermal energy, while the work done can appear as mechanical energy. All forms of energy are associated with movement. For example, any object has kinetic energy when it is in motion. A taut device such as a bow or spring can create motion even when stationary. Because of its composition, it contains potential energy. Similarly, nuclear energy is potential energy as it results from the composition of subatomic particles within the nucleus .
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A photon with energy 2.76 eV is absorbed by a hydrogen atom.
(a) Find the minimum "n" value for a hydrogen atom that can be ionized by such a photon.
(b) Find the speed of the electron released from the state in part (a) when it is far from the nucleus.
km/s
n=3 . is the correct answer .
What is Energy ?
Energy, in physics the ability to do work. It can exist in electrical, kinetic, thermal, electrical, chemical, nuclear, or various other forms. There is also heat and work. H. After transmission, energy is always referred to according to its nature. Thus, the heat transferred can become thermal energy, while the work done can appear as mechanical energy. All forms of energy are associated with movement. For example, any object has kinetic energy when it is in motion. A taut device such as a bow or spring can create motion even when stationary. Because of its composition, it contains potential energy. Similarly, nuclear energy is potential energy as it results from the composition of subatomic particles within the nucleus .
a)
The energy of a hydrogen atom in nth level is given by
En=-13.6/n2
=>2.76 =13.6/n2
n=sqrt[4.9275]=2.22
n=3 (approx)
b)
For n=3
E=-13.6/32 =-1.51 eV
Kinetic energy of freed electron is
K=2.76-1.51 =1.25 eV
=>(1/2)mV2 =1.25 eV
1/2)(9.11*10-31)V2=1.25*(1.6*10-19)
V=6.6263*105 m/s
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A spring is attached to the floor and pulled straight up by a string. The string's tension is measured. The graph in the figure shows the tension in the spring as a function of the spring's length L (Figure 1)
If the spring obeys Hooke's Law, what is the spring contract?
Hooke's Law states that when a spring is extended, the force is proportional to the length increase above the equilibrium length.
How do you determine a spring's limit?According to the Young's modulus definition: F = Y A ∆L/L. F = kL is the formula for the spring constant. (According to the corresponding magnitudes equation, L represents the size of the departure from equilibrium.) k thus equals Y A/L.Hooke's Law states that when a spring is extended, the force is proportional to the length increase above the equilibrium length. The following formula can be used to get the spring constant: The spring constant, k, has the formula k = -F/x.F = k(x – x0) (x – x0)The spring's displacement from equilibrium is measured in units of x, where k is the spring constant. The opposing direction of the spring force indicated by the negative sign indicates that it is a restoring force.To learn more about Hooke's Law refer to:
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An approximate equation for the efficiency (in percent) of an engine is: E=100×(1−1/5√R2)
where R is the compression ratio. Find R if E=4[a].[e][d] Round the answer to two decimal places.
Note if:[a]=2,[e]=1, then 4[a].[e][d]=42.13.
Work this custom problem about the exponential and logarithmic functions using the techniques in this module.
The ratio of compression R for the equation E=100×(1-1/5×[tex]\sqrt{R^{2} }[/tex] ) is approximately 2.89.
Efficiency is described by the equation E=100×(1-1/5×[tex]\sqrt{R^{2} }[/tex] )
We may enter this value into the equation to determine the value of R since E = 42.13.
E=100×(1-1/5×[tex]\sqrt{R^{2} }[/tex] ) = 42.13
Solving for R, we get:
1-1/5×[tex]\sqrt{R^{2} }[/tex] = 0.4213
1/5×[tex]\sqrt{R^{2} }[/tex] = 0.5787
[tex]\sqrt{R^{2} }[/tex] = 2.8935
R² = 8.3838
R = [tex]\sqrt{8.3838}[/tex]
R = 2.89
2.89 is the result of rounding the answer to two decimal places.
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What forces do electric fields represent?
A.They represent forces that are in contact with each other.
B.They represent non-contact electrical forces.
C.They only represent forces between objects with different charges.
D.They only represent forces between objects of the same charge.
Answer:
B. They represent non-contact electrical forces
What gauge pressure (P) must a pump generate to propel water from ground level
through a hose to a fifth-floor studio apartment that is on fire at an elevation of 15.5
m (H)? The density (D) of freshwater is 1000 kg/m³.
If your well water pressure is higher than what is considered typical (between 40 and 60 psi), you should change the pressure switch.
How much pressure is needed in ground based water pipes to pump?The low water pressure is frequently restricted by codes to 20 psi, unless certain fixtures, like flush valves, call for higher pressures. However, for the comfort of the end users, a minimum pressure of 40 psi is advised.The high-pressure pump, a centrifugal pump with a head range of 200 to 1200 m, is employed, for instance, in pressure boosting systems. Other application areas make use of low-pressure, medium-pressure, or super-pressure pumps.A hollow cylinder and a spiral component—which can be placed inside or outside the cylinder—make up the Archimedes screw. A low-lying fluid source is where one end is placed, and a higher discharge location is where the other end is tilted up into.To learn more about pressure refer to:
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Use the equation below to calculate the kinetic energy of a 40 kg skater taveling at a speed of 10 m/s.
KE = 0.5 • m • v²
Answer:
2000 Joules.
Explanation:
To calculate the kinetic energy of a 40 kg skater traveling at a speed of 10 m/s, we can use the equation:
KE = 0.5 • m • v²
Where:
KE = kinetic energy
m = mass (in kg)
v = velocity (in m/s)
Substituting the given values into the equation:
KE = 0.5 • 40 kg • (10 m/s)²
KE = 0.5 x 40 kg x 100 m²/s²
KE = 2000 Joules
So, the kinetic energy of a 40 kg skater traveling at a speed of 10 m/s is 2000 Joules.
What is the magnetic flux through the loop shown in the figure below if a = 30 cm? Assume the area vector A is pointed into the page.
The magnetic flux across the loop in the figure below, with a = 30 cm, is -30bB. How many magnetic lines of force are present in a specific area is determined by the magnetic flux.
For instance, the magnetic flux density is lower if fewer magnetic lines cover a large region of cross section. Knowing the magnetic flux also enables us to make an educated guess about the magnitude of the magnetic field in a particular area. The magnetic flux through a surface in electromagnetism, a branch of physics, is the surface integral of the normal component of the magnetic field (B) travelling through that surface. represented by A or B.
= ABcos(theta), = baBcos(theta), and = -30bB
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A 75kg passenger is riding the cliffhanger barrel ride at the fair. If the barrel radius is 4m and the coefficient of friction between the rider and the wall is 0.5, what is normal force the rider experiences and the minimum speed the ride can turn so that the rider doesn't slide down the wall?
Normal force = ___ N
Min speed = ____ m/s (round to the nearest tenth)
Answer: The normal force the rider experiences is the sum of the gravitational force acting on the rider and the friction force acting between the rider and the wall of the barrel.
Normal force = gravitational force + friction force
The gravitational force acting on the rider can be calculated using the weight of the rider, which is the mass of the rider multiplied by the acceleration due to gravity:
Weight = mass * acceleration due to gravity
Weight = 75 kg * 9.8 m/s^2 = 735 N
The friction force acting between the rider and the wall of the barrel can be calculated using the coefficient of friction and the normal force:
Friction force = coefficient of friction * normal force
Solving for the normal force, we get:
Normal force = Weight / (1-coefficient of friction) = 735 N / (1-0.5) = 1470 N
To find the minimum speed the ride can turn so that the rider doesn't slide down the wall, we can use the formula
velocity = square root of ( (Normal force * radius ) / (mass))
Minimum speed = √(1470 N * 4 m / 75 kg) = 14.5 m/s (round to the nearest tenth)
For the situation shown on figure on the right, what is the angle of incidence? Starting with n_1 sin i = n_2 sin r, show that the value of i when r = 90 degrees is given by sin^-1 (n_2/n_1). This value of i is usually designated as i_C, the angle for total internal reflection. For what condition on n_1 and n_2 does this expression make sense? What is meant by the critical angle for total internal reflection? If the light shines from water (n = 1.33), calculate the critical angle for total internal reflection.
1. Condition on n_1 and n_2 for which this expression make senses is -
The incident ray, the refracted ray, and the normal at the point of incidence all reside in the same plane, according to Snell's equation of refraction. For the given pair of media, the sine of the angle of incidence to the sine of the angle of refraction ratio is constant.
2. The critical angle is the angle of incidence at which total internal reflection occurs instead of just refraction when the angle of refraction is 90 degrees. Total internal reflection is an optical phenomena where waves arriving at the interface between two media entirely reflect back into the first medium instead of being refracted into the second.
3. When a light beam travels from the water (n=1.33) to the air (n=1), the critical angle is 48 degrees. This implies that all light rays will be (a) completely absorbed by the water if their angles of incidence in the water are larger than 48 degrees.
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nervous tissue is made up of newrogila and what other type of cell
The nervous tissue consists of two types of cells one is known as glial cells while the other is known as neurons.
The nervous tissue comprises neuroglia and what other type of cell?
The nervous system is very complex. We know that there are only two types of cells in the nerve tissue. The actual nerve cell is known as a neuron. The neuron is the conducting cell that can transmit impulses and the structural units of the nervous system. There are other types of cells is well which are known as the neuroglia, or glial, cells.
Basically, the nervous tissues consist of two cells one is called nerve cells while the other is called glial cells which help to transmit nerve impulses and also provide nutrients to neurons.
So we can conclude that the nervous tissue is made up of two types of cells, neurons, and glial cells.
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(a) Is the velocity of car A greater than, less than, or the same as the
velocity of car B?
(b) Is the initial position of car A greater than, less than, or equal to the
initial position of car B?
(c) In the time period from t = 0 tot = 1 s, is car A ahead of car B,
behind car B, or at the same position as car B?
Answer: the velocity of car A greater than Car b
Explanation: what is velocity?
Velocity is the parameter which is different from speed, can be defined as the rate at which the position of the object is changed with respect to time, it is basically speeding the object in a specific direction in a specific rate.
Velocity is a vector quantity which shows both magnitude and direction and The SI unit of velocity is meter per second (ms-1). If there is a change in magnitude or the direction of velocity of a body, then it is said to be accelerating.
represented by the equation v = Δs/Δt.
What is the mass of an object on Mercury that weighs 784 N on the earth's surface?
120kg
60kg
80kg
Important Formulas:
[tex]F=ma[/tex]
force(measured in newtons) = mass(measured in kg) * acceleration(measured in m/s^2)
__________________________________________________________
Given:
[tex]F=784N[/tex]
[tex]a=9.8m/s^2[/tex] (acceleration due to gravity)
[tex]m=?[/tex]
__________________________________________________________
Rearranging force formula to make mass the subject:
[tex]F=ma[/tex]
[tex]\dfrac{F}{a} =\dfrac{ma}{a}[/tex]
[tex]m=\dfrac{F}{a}[/tex]
__________________________________________________________
Finding mass:
[tex]m=\dfrac{F}{a}[/tex]
[tex]m=\dfrac{784}{9.8}[/tex]
__________________________________________________________
[tex]\fbox{m = 80kg}[/tex]
An object's speed is increased by a factor of three. > 50% Part (a) How does the object's momentum change?
a. There is not enough information. b. It decreases by a factor of three
c. The momentum does not change. d. It increases by a factor of more than three e. It decreases by a factor of more than three f. It increases by a factor of three.
kinetic energy increases by a factor of 9 is the correct answer .
What is momentum ?
Momentum, the product of a particle's mass and its velocity. Momentum is a vector quantity. It has both magnitude and direction. Isaac Newton's second law of motion states that the rate of change of momentum over time is equal to the force acting on a particle. See Newton's Laws of Motion. From Newton's second law, if a particle is subject to a constant force over a period of time, the product of that force and the time interval (momentum) equals the change in momentum. Conversely, the momentum of a particle is a measure of the time it takes for a constant force to come to rest.
When speed is increased by a factor of three,
New speed v'= 3v where v is the initial speed
a) Momentum P= mv
So new momentum P'= mv'= m*3v= 3 mv= 3P
So momentum increases by a factor of three
b) Kinetic Energy KE=m(v^2)/2
New Kinetic Energy KE'= m(v'^2)/2= m((3v)^2)/2= 9 m(v^2)/2= 9 KE
Therefore kinetic energy increases by a factor of 9
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The pressure of a gas is 2.50 atm in a 1.60 L container. Calculate the final pressure of the gas if the volume is decreased to 1.10 liters.
So, the final pressure of the gas if the volume is decreased to 1.10 liters is approximately 3.64 atm.
IntroductionHi! Here I will help you to solve the question about the relationship between pressure changes and volume changes in a closed system. Because there is no change in temperature, we can assume that the temperature is the same in every condition (isothermal state). In this isothermal situation, Boyle's Law will apply where the product of pressure and volume in a closed container whose temperature that kept constant is constant. The general equation of Boyle's Law is in the following equation:
[tex] \boxed{\sf{\bold{P \times V = C}}} [/tex]
With the following condition:
P = pressure of the gas in closed systemV = volume of the gas in closed systemC = constant conditionFormula UsedIn this case, we can calculate the relationship between changes in pressure and changes in gas volume in a closed system with the following equation:
[tex] \boxed{\sf{\bold{P_i \times V_i = P_f \times V_f}}} [/tex]
With the following condition:
[tex] \sf{P_i}[/tex] = the pressure at initial sample[tex] \sf{P_f}[/tex] = the pressure at final sample[tex] \sf{V_i}[/tex] = the volume at initial sample[tex] \sf{V_f}[/tex] = the volume at final sampleProblem SolvingWe know that:[tex] \sf{P_i}[/tex] = the pressure at initial sample = 2.50 atm.[tex] \sf{V_i}[/tex] = the volume at initial sample = 1.60 L.[tex] \sf{V_f}[/tex] = the volume at final sample = 1.10 L.What was asked?[tex] \sf{P_f}[/tex] = the pressure at final sample = ... atmStep by step:[tex] \sf{P_i \times V_i = P_f \times V_f} [/tex]
[tex] \sf{2.5 \times 1.6 = P_f \times 1.1} [/tex]
[tex] \sf{P_f = \frac{2.5 \times 1.6}{1.1}} [/tex]
[tex] \sf{\bold{P_f \approx 3.64 \: atm}} [/tex]
ConclusionSo, the final pressure of the gas if the volume is decreased to 1.10 liters is approximately 3.64 atm.
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-Gall
-Galvani
-Hall
-Flourens
-Broca
G. Stanley Hall was a pioneer in research on reflex behavior showing that reflexes could occur in the absence of brain involvement.
What exactly is a reflex?
The essence of Descartes' description has been captured in modern definitions of reflexes: an action or movement of the body that occurs automatically, or without thinking, as a reaction to something.
21 These definitions have three main components: a stimulus, subconscious processing, and a reaction.
What distinguishes the reflex?
One possible way to distinguish reflexive from conscious behaviors is to determine whether the stimulus for the behavior is external (e.g., a hammer tap or the shine of a light) or internal (e.g., hunger or love). This distinction appeals to our intuitive understanding that reflexes are typically subconscious responses to external stimuli. This proposal, however, has a number of flaws.
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A cube of brass has a shear force of 1650 N acting
on it as shown in the figure below (Figure 1). This
causes the cube to deform through an angle of 0.06
Part A
What is the length of one of the cube's sides?
Enter your answer in millimeters.
The length of one of the cube's sides is 3.97 mm.
What is the area of the cube?The area of the cube is calculated by applying the following formula as shown below.
Young's modulus is equal to ratio of shear stress to shear strain.
E = Shear stress / Shear strain
Shear stress = F / A
where;
F is the applied forceA is the area of the cubeE is Young's modulusShear strain = e / L
Shear strain = tanθ
E = Shear stress / ( tanθ )
E = ( F/Atanθ )
A = ( F / Etanθ )
Young's modulus of brass = 1 x 10¹¹ Pa
A = ( 1650 / 1 x 10¹¹ x tan(0.06)
A = 1.576 x 10⁻⁵ m²
The length of a side of the cube is calculated as follows;
L² = A
L = √ A
L = √ (1.576 x 10⁻⁵ )
L = 3.97 x 10⁻³ m
L = 3.97 mm
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If a marathon runner runs an average speed of 11 miles/hour for three hours. How far did the runner run in the three hours?
Answer: 33 miles
Explanation: multiply 3x11 which equals 33
Answer: 33 miles
Explanation:
A spring with a cart at its end vibrates at frequency 6.0 \mathrm{Hz}6.0Hz.(a) Determine the period of vibration. (b) Determine the frequency if the cart’s mass is doubled while the spring constant remains unchanged and (c) the frequency if the spring constant doubles while the cart’s mass remains the same.
The time period T=0.167 and if the mass is doubled the modified frequency will be f'= 4.242Hz.
The time for one complete vibration is called the period (T) and is measured in seconds. If the period is large the frequency is low, and If the period is small the frequency is high.
The time period is inversely proportional to a frequency which is calculated as:
T=1/f
Given f=6.0Hz substitute in the formula
T=1/6
Time period(T)=0.167
Let, k be the spring constant and m be the mass of the cart then,
[tex]f=\frac{1}{2\pi} \sqrt{\frac{k}{m} } =6.0Hz[/tex]
If the mass is doubled by the modified frequency,
[tex]f'=\frac{1}{2\pi } \sqrt{\frac{k}{2m} } \\\\f'=\frac{1}{\sqrt{2} } \frac{1}{2\pi } \sqrt{\frac{k}{m} } \\\\f'=\frac{1}{\sqrt{2} } f\\\\f'=\frac{6.0}{\sqrt{2} } \\[/tex]
f '=4.242Hz.
If the spring constant is doubled by the modified frequency,
[tex]f'=\frac{1}{2\pi } \sqrt{\frac{2k}{m}}\\\\f'=\sqrt{2} \frac{1}{2\pi } \sqrt{\frac{k}{m} } \\\\f'=\sqrt{2} f=\sqrt{2} *6[/tex]
f '=8.485Hz
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Three 200-N forces are exerted on the beam shown in the figure (Figure 1).
Determine the torque about the axis of rotation on the left produced by force F? 1onB.
Determine the torque about the axis of rotation on the left produced by force F? 2onB.
At what distance from the axis of rotation must F? 3onB be exerted to cause a torque that balances those produced by F? 1onB and F? 2onB?
The torque about the axis of rotation on the left produced by force F1onB is 600 Nm and the torque about the axis of rotation on the left produced by force F2onB is also 600 Nm. Force F3onB must be exerted at a distance of 0.5 m from the axis of rotation to balance the torques produced by F1onB and F2onB.
F1onB Torque: 600 Nm
F2onB Torque: 600 Nm
F3onB Distance: 0.5 m
1. To determine the torque about the axis of rotation on the left produced by force F1onB, we need to calculate the moment arm. The moment arm is the perpendicular distance from the axis of rotation to the line of action of the force. The moment arm for F1onB is 0.5 m, so the torque produced by F1onB is 600 Nm (F1onB x Moment Arm).
2. To determine the torque about the axis of rotation on the left produced by force F2onB, we need to calculate the moment arm. The moment arm for F2onB is 0.5 m, so the torque produced by F2onB is also 600 Nm (F2onB x Moment Arm).
3. To determine the distance from the axis of rotation at which F3onB must be exerted to balance the torques produced by F1onB and F2onB, we need to use the equation Torque = Force x Moment Arm. Since the total torque must equal 0, we can set up the following equation: 600 Nm + 600 Nm + (F3onB x Moment Arm) = 0. Solving for the Moment Arm, we get Moment Arm = -0.5 m, which is the distance from the axis of rotation at which F3onB must be exerted to balance the torques produced by F1onB and F2onB.
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A car is on aslope of 10⁰ above the horizontal. A force of 1000N is applied to the car line of of the slope. the car has amass of 500Kg. what is the accelratoin of the car.
The acceleration of the car due to force applied is 0.298 m/s^2.
What forces are present on a slope?There are two parts to the gravitational force acting on a slope. They are the driving force (fs) that pushes the block down the hill and the friction-producing normal force (fn) that pushes into the slope.ma = F (applied) - mgsinФ
m = mass = 500Kg; a = acceleration; F (applied) = Applied force = 1000N
Ф = angle of slope = 10⁰; g = Acceleration due to gravity = 9.8 m/s^2
500 x a = 1000 - (500 x 9.8 x sin10);
a =[ 1000 - (500 x 9.8 x sin10)] / 500;
= 0.298 m/s^2.
Which two forces contribute most significantly to slope stability?Two elements ultimately affect the stability of the slope. They are the slope's angle and the strength of the materials used to construct it.
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what does peter alward identify as that which the practice of philosophy consists?
Peter Alward identifies reasoning as that which the practice of philosophy consists.
Who is Peter Alward?Peter Wallace Brannen Alward is a Canadian philosopher. He is an academic by honour, known to be a Professor in Philosophy and the Department Head in Philosophy at the University of Saskatchewan. He is popular for his publications on philosophy of fiction, philosophy of art and environmental philosophy.
Key to Alward's argument is a notion known as the "narrative informant" who relates the reader's encounter with fictional events through - sometimes unreliable - reporting. Alward portrays the confusion about fiction ideas from a failure to properly relate between writing fiction and telling stories, while creating a concept whereby the writer is a sculptor who constructs works of fiction out of words.
Therefore, the correct answer is as given above
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. A 90kg gymnast comes to a stop after
tumbling. Her feet do 4000J of work to stop
her.
Which of the following was the girl's velocity
when she began to stop?
The solution, based on the stated statement, was 10 m/sec when she started to halt.
What is work energy theorem ?According to the work-energy theorem, the net work performed by forces acting on an item equals the change in kinetic energy.
Mobility (kinetic energy) and storing mechanical energy are the two forms (potential energy).
The change there in particle's thermal energy is equal to the net work performed on the particle: W = K B - K A
The relationship between kinetic energy and an object's mass and squares of its velocity is direct: K.E. = 1/2mv². The kinetic energy is measured in kilograms-meters squared each for a second squared if the mass is measured in kg and the velocity is measured in meters per second.
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Which of the following would change the period of oscillation of this torsion pendulum? a. increasing the mass
b. decreasing the initial angular displacement c. replacing the disk with sphere of equal mass and radius d. hanging the pendulum in an elevator accelerating downward Subomit
Option A and Option C are correct .
What is pendulum ?
Pendulum is an object suspended from a fixed point that can swing back and forth under the influence of gravity. A pendulum is used to regulate the movement of a clock because the time interval between each complete swing, called the period, is constant. The formula for the pendulum period T is the 2π square root of T = √L/g.
The Italian scientist Galileo (circa 1583) first noticed the invariance of the pendulum's period by comparing the motion of a swinging lamp in the Cathedral of Pisa with its pulse rate.
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Philosophy 203 Do you think it is important to rank moral rules in order of importance? How will you rank your own ethical rules or those of any other system in which you are aware? order
It can be important to rank moral rules in order of importance because it allows for clear decision-making and prioritization in situations where multiple moral considerations are present. However, ranking moral rules can also be difficult and subjective, as different individuals and cultures may place different values and priorities on different moral principles.
The principle of non-harm, which holds that it is morally wrong to cause harm to others.
The principle of autonomy, which holds that individuals should be free to make their own choices and pursue their own goals.
The principle of fairness and justice, which holds that individuals should be treated equally and that resources and opportunities should be distributed fairly.
The principle of compassion and empathy, which holds that individuals should care for and show concern for the well-being of others.
The principle of responsibility and accountability, which holds that individuals should be held responsible for the consequences of their actions.
It's important to keep in mind that everyone have different moral principles and they might have different order of importance.
It's important to note that this ranking is not definitive, and different individuals and cultures may have different priorities and values when it comes to moral principles.
The normal boiling point of diethyl ether is 34.6°C. At a pressure of 1.3 atm, the boiling point is: A) > 34.6°C B) <34.6 °C C) 34.6°C D) none of the above
The answer is A) > 34.6°C
The normal boiling point of a substance is the temperature at which it changes phase from liquid to gas at a pressure of 1 atm. At a pressure of 1.3 atm, the boiling point of a substance will be different.
The boiling point of a substance increases with an increase in pressure, so at 1.3 atm, the boiling point of diethyl ether will be greater than 34.6°C.
Therefore, the answer is A) > 34.6°C
It's worth noting that the boiling point elevation equation can be used to calculate the boiling point at different pressures, but it requires the knowledge of the substance's molar heat of vaporization.
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Express the force that the person exerts on the ice, F, in terms of m and g You do not need to include the force of the column of air above her. r-1 ▲ 25%
The force F can be expressed as F = m*9.8 m/s2.
What is force?Force is a physical quantity that is a measure of an object's interaction with other objects. It is a vector, meaning it has both magnitude and direction. Force can cause an object to accelerate, decelerate, change its direction, or remain in its current state. Force is measured in newtons (N) in the SI system of units. Force is responsible for many of the phenomenon we observe in nature such as gravity and friction.
The force that the person exerts on the ice, F, can be expressed in terms of mass, m, and the gravitational constant, g, as follows: F = m*g. This force is the result of the downward acceleration of the person's mass due to gravity. The force is equal to the mass multiplied by the acceleration caused by gravity, which is 9.8 m/s2. Therefore, the force F can be expressed as F = m*9.8 m/s2.
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