Answer:
see below
Explanation:
maximum height attained= u²/2g
= 17²/2*10 m
= 14.45 m
speed on hitting the ground= √2gh
= √2*10*14.45 m/s
= 17m/s
hence it will hit the ground with same speed with which it was projected if we neglect the air resistance.
select the accurate statements concerning membrane fluidity.
-The degree of membrane fluidity varies depending on the composition of the membrane. -Phospholipids are relatively free to move around laterally within the membrane. -Unanchored proteins are relatively free to move around laterally within the membrane.
All of the above given statements are true.
What is membrane?A membrane controls the flow of chemicals between two environments as a selectively permeable barrier. The cell membrane is the most well-known biological membrane.
a. The amount of membrane fluidity varies based on the membrane's make-up. This is because the fluidity of the membrane can be impacted by the lipid composition, particularly the length of fatty acid chains and degree of unsaturation of phospholipids.
b. Phospholipids can travel around the membrane's lateral space quite freely. This is so that individual phospholipids can migrate laterally inside the membrane's lipid bilayer structure.
c. Unanchored proteins can essentially travel wherever they choose in the membrane's lateral space. This is due to the ability of proteins to diffuse laterally within the lipid bilayer, independent of the cytoskeleton or other proteins in the membrane.
These conclusions accurately characterize the degree of fluidity within the membrane and how the ratio of lipids to proteins affects it.
To know more about cell membrane, visit:
https://brainly.com/question/16589545
#SPJ4
Fill The Blank? the rate of diffusion is ___________ related to concentration, temperature, and pressure meaning that an increase in concentration, temperature, or pressure results in an ___________ in the rate of diffusion.
The rate of diffusion is directly related to concentration, temperature, and pressure meaning that an increase in concentration, temperature, or pressure results in an increase in the rate of diffusion.
This is because diffusion is a process where particles move from an area of high concentration to an area of low concentration, driven by a concentration gradient. As the concentration gradient increases, more particles move from the high concentration area to the low concentration area, resulting in a faster rate of diffusion.
Temperature also affects the rate of diffusion because it affects the kinetic energy of the particles. At higher temperatures, particles have more kinetic energy and move faster, leading to a higher rate of diffusion.
Pressure affects the rate of diffusion because it affects the concentration gradient. An increase in pressure can compress the gas and increase the concentration gradient, resulting in a higher rate of diffusion.
To know more about the diffusion, here
brainly.com/question/14392880
#SPJ4
what is the relationship between the voltage across a resistor and capacitor when the resistor and capacitor are in series and are powered by a voltage source
The voltage across the resistor and capacitor will be the same. This is because the voltage source is supplying the same voltage to both components, and since the same amount of current is passing .
What is the voltage ?Voltage is a measure of electrical potential energy per unit charge. It is measured in volts (V). Voltage is an important factor in the functioning of electric circuits. It determines the amount of current that will flow in a circuit. A higher voltage will cause more current to flow through the circuit, while a lower voltage will cause less current to flow. Voltage is also related to power, as the electrical power is equal to the product of the voltage and current. the same amount of current is passing through both components, the voltage drop across each component must be equal.
To learn more about voltage
https://brainly.com/question/1176850
#SPJ4
The desorption of a single molecular layer of n-butane from a single crystal of aluminum oxide was found to be first order with a rate constant of 0. 128/s at 150 K. The half life of the reaction is 5. 41sPart BIf the surface is initially completely covered with n-butane at 150 K, how long will it take for 25% of the molecules to desorb?Part CFor 50% to desorb?Part DIf the surface is initially completely covered, what fraction will remain covered after 14s ?Part EAfter 20s ?
It was discovered that the rate of desorption of a single molecular layer of n-butane from a single crystal of aluminum oxide was first order. constant of 0. 128/s at 150 K , Half life=[tex]\frac {ln(2)}{k}[/tex]=5.415 s
For first order desorption:
In([tex]\frac {N}{N_o}[/tex]) =-kt and [tex]\frac {N}{N_o}[/tex] = [tex]e^{(-kt)[/tex] where N is the number of molecules remaining at time t, No is initial number and k is rate constant
(A) Half life=[tex]\frac {ln(2)}{k}[/tex]=5.415 s
(B) 25% desorbs [tex]\rightarrow[/tex] 75% remains
⇒ [tex]\frac {N}{N_o}[/tex] x 100% = 75% => [tex]\frac {N}{N_o}[/tex]=0.75
In(0.75)=-0.128 x t
Time t = 2.25 s
(C) 50% desorbs ⇒ 50% remains
=> [tex]\frac {N}{N_o}[/tex] x 100% = 50% => [tex]\frac {N}{N_o}[/tex]= 0.50
In(0.50) = -0.128 x t
Time t = 5.42 S
(D) For t = 14 s
Fraction remaining= [tex]\frac {N}{N_o}[/tex] =[tex]e^{(-0.128 \times 14)[/tex]
Fraction remaining= -0.167 (approximately 0.17)
(E) For t = 20 s
Fraction remaining= [tex]\frac {N}{N_o}[/tex] = [tex]e^{(-0.128 \times 20)[/tex]
Fraction remaining= -0.0773 (approximately 0.077)
Learn more about Half life
brainly.com/question/24710827
#SPJ4
if a car moving at 90 mi/h takes 300 ft to stop with uniform acceleration after its brakes are applied, how far will it take to stop under the same conditions if its initial velocity is 45 mi/h ?
If the car is initially moving at a speed of 45 mi/h and it takes 300 ft to stop with uniform acceleration after its brakes are applied, it will take 600 ft to stop under the same conditions.
This is because the deceleration is the same, but the initial velocity is halved.
Acceleration is the rate of change of velocity of an object with respect to time. It is a vector quantity which is defined as the rate of change of an object's velocity and is usually represented by the symbol a. Acceleration can be caused by a variety of factors, including external forces, changes in direction, or changes in speed. In physics, acceleration can be described as the rate of change of an object's velocity over a period of time.
Learn more about initial velocity:
https://brainly.com/question/28736305
#SPJ4
the difference in point of view that occurs when the lens (or other device) through which the eye views a scene is separate from the lens that exposes the film is called
The difference in point of view that occurs when the lens (or other device) through which the eye views a scene is separate from the lens that exposes the film is called the parallax effect.
What is parallax effect?Parallax effect is an interactive technique used by web developers to create a visually engaging experience for users. It works by having the background move at a slower speed than the foreground when the user scrolls down the page. This creates an illusion of depth, as if the user is looking into the scene from different angles. The effect is especially popular for creating immersive experiences such as 3D games, virtual tours, and interactive storytelling. Parallax effect can be used to bring websites to life, offering users an engaging and dynamic experience. It is also a great tool for storytelling, helping to convey emotion and create a unique visual experience.
To learn more about parallax effect
https://brainly.com/question/17164388
#SPJ1
2.81 A certain volcano on earth can eject rocks vertically to a maximum height H. (a) How high (in terms of H) would these rocks go if a volcano on Mars ejected them with the same initial velocity? The acceleration due to gravity on Mars is 3.71 m/s², and you can neglect air resistance on both planets. (b) If the rocks are in the air for a time T on earth, for how long (in terms of 7) will they be in the air on Mars?
a) Rocks reach height 26.4 times maximum height they could reach on Earth b) rocks will be 0.753 times duration they would be in the air on Earth
(a) Max height H reached by a projectile launched vertically upward on Earth is given by:
[tex]H = v^{2} / (2g),[/tex]
where v₀ : initial velocity and g: acceleration due to gravity on Earth. To find height reached by same projectile launched with same initial velocity on Mars, we can use same formula but with the value of g on Mars:
[tex]H = v^{2} / (2g),[/tex]
where gₘ is the acceleration due to gravity on Mars. We know that initial velocity of the rocks is the same on both planets, so we can write:
[tex]H = H * g / g[/tex]
Put values:
[tex]H = H * 9.81 m/s^{2} / 3.71 m/s^{2} = 26.4 * H[/tex]
Therefore, the rocks ejected from the volcano on Mars would reach a height that is 26.4 times the maximum height they could reach on Earth.
(b) The time T for the rocks to be in the air on Earth can be found using the formula:
[tex]T = 2v / g[/tex].
To find time the rocks would be in air on Mars, we use same formula but with the value of g in terms of Mars:
[tex]T = 2v / g[/tex]
Put values:
[tex]T = 2v / 3.71 m/s^{2} = 2/ (9.81 m/s^{2} / 3.71 m/s^{2} ) * (2v / 9.81 m/s^{2} )[/tex]
[tex]Tm = (2/2.652)*T[/tex]
[tex]Tm = 0.753 * T[/tex]
Learn more about height here:
https://brainly.com/question/30530692
#SPJ4
you are called to the scene of an overturned tanker truck. arriving at the scene, you notice a fluid draining from the underside of the truck. you use your binoculars to look on the placard on the back of the vehicle so that you can identify the material from your:
Northern American Emergency Response Guide.The main goal of the ERG Handbook is to help first responders immediately identify any unique or general risks associated with the material(s) at issue.
What does ERG guide 111 entail?There is also Guide 111, which is for "hazardous" materials.When using generic information, make sure to replace it with more detailed instructions as soon as new information becomes available.
What is the number on my ERG Guide?The orange panel next to the diamond-shaped sign or on the extremities and sides of the a cargo tank, vehicle, or rail car may also display the 4-digit ID Number.
To know more about Emergency Response Guide visit:
https://brainly.com/question/14949646
#SPJ4
(q1) two charged spheres are 10.68 cm apart. they are moved, and the force on each of them is found to have been tripled. how far apart are they now?
The spheres are now 6.08 cm apart. The force between two charged spheres is proportional to the product of their charges and inversely proportional to the square of the distance between them.
This means that if the force is tripled, the distance between the spheres must have been reduced by a factor of the square root of 3. To find the new distance, we can use the formula:
d_new = d_old / √3
Where d_old is the original distance of 10.68 cm and d_new is the new distance. Plugging in the values, we get:
d_new = 10.68 cm / √3 = 6.08 cm
So, the spheres are now 6.08 cm apart.
In this case, F_old / F_new = 1/3, since the force has been tripled. Plugging in the original distance of 10.68 cm and the value for F_old / F_new, we can calculate the new distance. The final result shows that the spheres are now 6.08 cm apart.
This result shows how the force between charged spheres is directly influenced by the distance between them. Understanding this relationship is important in many fields, including physics, electrical engineering, and materials science.
Learn more about charge here:
https://brainly.com/question/20342415
#SPJ4
how much more time (in terms of t1) does it take the ladybug to get back to its starting point from the place where it reverses its acceleration?
[tex]T_{1}+\sqrt{2 }T_{1}[/tex] is the time (in terms of [tex]T_{1}[/tex]) does it take the ladybug to get back to its starting point from the place where it reverses its acceleration
The following is a roughly formula-free, Physics-focused solution. The velocity continues to move incorrectly even when the acceleration [tex]T_{1}[/tex]changes. By symmetry, the ladybug is at rest after an additional period and is twice as far from its starting point as it was before it applied the brakes.
As a result, it must now go twice as far. Under constant acceleration, the distance traveled is proportional to the square of the time. Consequently, the amount of time needed to return to the starting location from the farthest point reached is 2–[tex]\sqrt{T_{1} }[/tex]. Total time from the time the acceleration reversed is therefore [tex]T_{1}+\sqrt{2 }T_{1}[/tex].
Learn more about acceleration
brainly.com/question/12550364
#SPJ4
what is the only way to be sure that the power is off in a system, circuit, or equipment?
The one and only way to ensure that power off in a system, circuit, or piece of equipment is to measure the voltage with a known working meter.
What is meant by power off in a circuit?Turn off the power in the circuit by selecting it with the circuit breaker on the electrical panel. Place the voltmeter on the two output points at the bottom of the circuit breaker to ensure that the power is turned off. If the light does not illuminate, the voltmeter will indicate that there is no voltage.When the circuit switch is turned off, no electricity flows, and the circuit is said to be open.An electric switch is an appliance that disrupts the flow of electrons in a circuit. Light switches have a simple design and are primarily binary devices: they are either fully on or fully off. The circuit is broken and the power flow is interrupted when the switch is turned off.To learn more about electric circuit refer to :
https://brainly.com/question/2969220
#SPJ1
a refracting telescope has a magnification m. if the focal length of the objective lens is doubled and the eyepiece focal length is halved, what is the new magnification?
The required new magnification of the telescope when the focal lengths of objective lens and eye-piece are given is calculated to be four times that of original magnification.
We know the expression for magnification as, m = -fo/fe
where,
The objective lens's focal length is fo
fe is the focal length of eye piece
It is given that, focal length of the objective lens is doubled.
⇒ fo₂ = 2 fo
It is given that, focal length of the eye piece is doubled.
⇒ fe₂ = 1/2 fe
So, the new magnification is,
m' = -fo₂/fe₂ = - 2 fo/(1/2 fe) = -4 fo/fe = 4 m
Thus, the required new magnification is calculated to be four times that of the original magnification.
To know more about magnification:
https://brainly.com/question/4596751
#SPJ4
what do you notice about the momentum before and after of the red cart vs the momentum before and after of the blue cart?
However, in general, the law of conservation of momentum states that the total momentum of an isolated system remains constant if there are no external forces acting on the system. This means that the sum of the momenta before an event is equal to the sum of the momenta after the event.
What is the momentum ?
Momentum is the quantity of motion of a moving body, also known as its mass multiplied by its velocity. Momentum is a vector quantity, which means it has both a direction and a magnitude. Momentum is conserved in an isolated system. This means that the total momentum of a system remains constant as long as no external forces act on it. Momentum is an important concept in classical mechanics, as well as in modern physics. In everyday life, momentum can be seen in sports, such as a baseball thrown with a certain speed, or a car moving with a certain speed.
If the red and blue carts are part of an isolated system, their total momentum before the event would be equal to their total momentum after the event. Therefore, any change in the momentum of one cart must be compensated for by an equal and opposite change in the momentum of the other cart.
So, if one cart experiences an increase in momentum after the event, the other cart must experience a decrease in momentum of the same magnitude. Conversely, if one cart experiences a decrease in momentum, the other cart must experience an increase in momentum of the same magnitude.
To learn more about momentum
brainly.com/question/402617
#SPJ4
examining your graph, how would you describe the relationship between vapor pressure and temperature? is it linear? explain this relationship in terms of the kinetic energy of the molecules.
The pressure that a gas, at a constant temperature, exerts over a liquid surface is known as vapour pressure. Since the kinetic energy of molecules increases with temperature, vapour pressure likewise rises.
As a result, more molecules possess the necessary energy to transform from a liquid to a gas.
The pressure that a gas, at a constant temperature, exerts over a liquid surface is known as vapour pressure. Due to the fact that more molecules have adequate kinetic energy to transition from a liquid to a gas as the temperature rises, the vapour pressure likewise rises.
A liquid or solid's vapour pressure increases along with its temperature. On the other hand, when the temperature drops, the vapour pressure drops.
There are several techniques to calculate a liquid's vapour pressure. A little amount of the liquid is injected into a closed flask that is attached to a manometer for a straightforward measurement.
Learn more about Vapour pressure here:
https://brainly.com/question/2693029
#SPJ4
a car with initial velocity 30.0 m/s decelerates with constant acceleration -5.0 m/s2 until the car comes to a stop. how far does the car travel before it comes to rest?
The car travels 90m before it comes to rest.
Distance is the total movement of an object without any regard to direction. We can define distance as how much ground an object has covered despite its starting or ending point.
Velocity (v) is a vector quantity that measures displacement (or change in position, over the change in time.
Acceleration is defined as the rate of change of velocity with respect to time.
The initial velocity is 30.0 m/s.
The acceleration is [tex]-5.0\ m/s^2[/tex].
The car comes to a stop. Hence the final velocity is 0 m/s.
Using the third equation of motion,
[tex]v^2 - u^2=2as[/tex]
Substituting the values,
[tex]0^2 - 30^2=2(-5)s[/tex]
The value of s is 90m.
To know more about the acceleration, here
brainly.com/question/13860566
#SPJ4
how far (in cm) from a piece of paper must you hold your father's 1.80 d reading glasses to try to burn a hole in the paper with sunlight?
To burn a hole in a piece of paper with sunlight using your father's 1.80 D reading glasses, you must hold the glasses about 6 cm away from the paper.
This is because the glasses will act as a magnifying lens, and the focal length of the lens is determined by the diopter number (1.80 in this case). The focal length of a 1.80 D lens is approximately 6 cm.
The focal length of a lens is the distance between the lens and the image sensor when the subject is in focus, usually stated in millimeters (e.g., 28 mm, 50 mm). The focal length determines the angle of view of the lens, and thus how much of the scene will be captured when the image is taken.
Learn more about The focal length:
https://brainly.com/question/28039799
#SPJ4
which of the following describes a hypothesis? multiple choice question. any information we collect about the physical universe using our senses an explanation that has been proven correct a general principle that is derived from hundreds of observations and experiments a tentative explanation for a natural phenomenon
A tentative explanation for a natural phenomenon describes hypothesis .
A straightforward hypothesis can indicate that there is a causal relationship—that is, that one variable affects the other—between two variables. Here's an illustration: Higher grades are the result of more time spent preparing for a test. The number of hours spent studying is the independent variable in this statement, and the result is the dependent variable. The independent variable is altered while the dependent variable is evaluated to ascertain how the dependent variable is impacted by the independent variable. Similar to a simple hypothesis, a complex hypothesis has two or more independent variables and/or two or more dependent variables.
Learn more about hypothesis
brainly.com/question/29519577
#SPJ4
the side wall of a dam with width 70 m is a quarter circle with radius of 7 m. when the dam is full, calculate the hydrostatic force on the dam in n and its line of action.
The required hydrostatic force on the dam when width and the radius of the dam are given is calculated to be 31284956.29 N.
It is given that width of the dam is 70 m.
Radius of the circle is 7 m.
The height of the dam will be equal to the half of its radius.
h = r/2 = 7/2 = 3.5 m
Area is given by the formula, A = r ω
where,
ω is width
r is radius
Volume is given as, V = ω πr²/4
Horizontal force is given by, Fx = ρ g h A = 1000× 9.8× 7/2× 7× 70 = 16807000 N
Vertical force Fy = ρ g V = 1000 × 9.8 × 70 × π 7²/4 = 98× 7000× 49π /4 = 26386990 N
The resultant of vertical and horizontal force is nothing but the hydrostatic force.
F = √(Fx² + Fy²) = √(16807000² + 26386990²) = √(282475249000000+696273241260100) = 31284956.29 N
Thus, the hydrostatic force on the dam in N is calculated to be 31284956.29 N.
To know more about hydrostatic force:
https://brainly.com/question/21800451
#SPJ4
joe and bob needed to move a trunk with a mass of 75kg the trunk is too heavy to life so the boys slide it 12 meters to the waiting truck. the coefficient of sliding friction between the trunk and the floor is 0.20 the entire task is accomplished in 13 seconds
weight of truck:
how much force is excerted on the truck:
how much work is done to move the trunk:
what is the power exerted:
The weight of the trunk is 735 N
The force of friction is 147 N
The force exerted on the trunk is 882 N
The work done to move the trunk is 10,584 J
The power exerted is 814 W
How to calculate?The weight of the trunk can be calculated as :
Weight = 75 kg * 9.8 m/s^2 = 735 N
The force of friction can be calculated as:
Friction = μ * N = 0.20 * 735 N = 147 N
The force exerted on the trunk can be calculated as :
Force = Weight + Friction = 735 N + 147 N = 882 N
The work done to move the trunk can be calculated as
Work = Force * Distance = 882 N * 12 m = 10,584 J
The power exerted can be calculated as :
Power = Work / Time = 10,584 J / 13 s = 814 W.
Learn more about power at: https://brainly.com/question/1634438
#SPJ1
The volume of a monatomic ideal gas triples in an isothermal expansion. By what factor does its pressure change?
In an isothermal expansion, the pressure of a monatomic ideal gas increases by a factor of 1/3 (or 2/3).
What is ideal gas?A collection of presumptions about a gas's behavior defines, it as an ideal gas in theory. These hypotheses, which are based on experimental observations of actual gases, are helpful for comprehending and forecasting the behavior of gases under diverse circumstances.
The temperature of the gas doesn't change during an isothermal expansion. In the equation of state for an ideal gas, PV = nRT, where n is the number of moles, R is the universal gas constant, and T is the temperature, pressure and volume are connected.
The pressure of a monatomic ideal gas will change by a factor of 1/3(2/3) if its volume triples. This can be obtained by maintaining a constant temperature and changing the equation of state to P = (nRT) / V.
Since the pressure and volume are inversely related, the pressure will fall by a factor of 1/3 (or 2/3) if the volume triples.
To know more about ideal gas, visit:
https://brainly.com/question/29202954
#SPJ4
Can we see a source of light through a bent tube? Explain your your answer
Because a curved tube is not an homogeneous medium, we cannot perceive a light source through it. Hence the tube should have a straight, homogeneous medium so that the source of the light can be seen.
What does light mean in the Bible?Light has always represented righteousness, kindness, wisdom, understanding, grace, hope, and the revelation of God in the Bible. On the other side, darkness has been associated with sin, evil, and hopelessness.
What exactly is God's light?Aspects of the divine presence that are felt as light in theophany or visions, or that are depicted as such in allegorical or metaphor, are referred to as divine light in theology.
To know more about light visit:
https://brainly.com/question/15200315
#SPJ1
a ball is thrown horizontally from the roof of a building 45 m building and lands 105 m from the base od the building, what is the velocity just before it hits the ground
The velocity of the ball just before it hits the ground is 35 m/s.
What is velocity?
Velocity is a vector quantity that describes the rate of change of an object's position in a specific direction. It is defined as the derivative of an object's position with respect to time. Mathematically, velocity is expressed as:
v = Δx / Δt
The velocity of the ball just before it hits the ground can be calculated using the concept of projectile motion. In this case, we have two components of motion: horizontal and vertical. The horizontal component is constant and equal to the initial velocity, while the vertical component is affected by gravity and follows a parabolic path.
We can use the following equation to find the time it takes for the ball to fall from the roof to the ground:
h = vi * t + 0.5 * g * t²
where h is the height of the building (45 m), vi is the initial velocity (which we are trying to find), g is the acceleration due to gravity (9.8 m/s²), and t is the time it takes for the ball to fall.
Since the ball lands 105 m from the base of the building, we can also use the horizontal component of the motion to find the time:
d = vi * t
where d is the horizontal distance traveled by the ball (105 m).
We can equate these two equations to eliminate time and find the velocity of the ball:
h = vi * (d/vi) + 0.5 * g * (d/vi)²
45 = 105 + 0.5 * 9.8 * (d/vi)²
(d/vi)² = 2 * h / g = 2 * 45 / 9.8 = 9.18
d/vi = 3
vi = d / 3 = 105 / 3 = 35 m/s
So, the velocity of the ball just before it hits the ground is 35 m/s.
To learn more about velocity:
https://brainly.com/question/25749514
#SPJ4
suppose electric current is going through a 960 ohm resistor and you use a voltmeter to measure a potential difference of 4.98 volts across the two terminals of the resistor. what must be the current in amperes going through this resistor?
The current in amperes going through this resistor is 0.005208 Amperes or 5.208 mA.
Ohm's law is one of the most fundamental laws of electrical engineering. It states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. Mathematically, the relationship is given by the equation: I = V / R, where I is the current in amperes, V is the voltage in volts, and R is the resistance in ohms.
In our example, we are given a resistor with a resistance of 960 ohms and a potential difference (voltage) of 4.98 volts across its two terminals. We need to divide the voltage by the resistance to find the current flowing through the resistor. Using the equation I = V / R, we have: I = 4.98 volts / 960 ohms = 0.005208 Amperes or 5.208 milliamperes.
So, the current flowing through the 960-ohm resistor is 5.208 milliamperes.
Learn more about current and resistors at:https://brainly.com/question/24858512
#SPJ4
assume that the collision in each scenario is elastic. a graph of the magnitude of the force exerted on cart y as a function of time for scenario 1 is shown. during which interval of time does the magnitude of the momentum of cart y change the most?
During 0.004s to 0.006s interval of time does the magnitude of the momentum of cart y change the most.
What is momentum?Momentum (more particularly linear momentum , translational momentum) is defined in Newtonian physics as the product of an object's mass and velocity. It consists of a vector quantity with magnitude and direction. If an object's mass is m and its velocity is v (also a vector quantity).
The kilogram metre per second (kgm/s) is the unit of momentum measurement in the International System of Units (SI), which really is equivalent to the newton-second. During 0.004s to 0.006s interval of time does the magnitude of the momentum of cart y change the most.
Therefore, during 0.004s to 0.006s interval of time does the magnitude of the momentum of cart y change the most.
To learn more about momentum, here:
https://brainly.com/question/18798405
#SPJ1
if i double the length, and halve the radius of a copper wire, what is the value of its new resistance? original resistance was r0
The new resistance of the copper after doubling the length and reducing the radius will be 8 times of the original resistance.
Resistance can be defined as the property of the conductor which opposes the flow of electric current. Resistance is also defined as the ratio of the voltage applied to the electric current flowing through the circuit.
R = ρl/ A
where, R is the electric circuit,
ρ is the resistivity or specific resistance,
l is the length of the wire,
A is the cross-sectional area of the wire.
If we double the length of copper wire and reduce the radius to half. Then, the new resistance will be:
R = ρl/ A
l' = 2l
r' = r/2
A = πr²
A' = π(r/2)²
A' = πr²/4
R' = new resistance,
R' = ρ ×2l/ πr²/4
R' = 4 × ρ ×2l/ πr²
R' = 8ρl/ A
Therefore, the new resistance will be 8 times of the original resistance.
Learn more about Resistance here:
https://brainly.com/question/29427458
#SPJ1
Make A CER about this Question --> as an asteroid collided with Earth in the ancient past and what were the effects of this collision? PLEASE HELP PLEASE PLEASE PLEASE PLEASE PLEASE !
It is widely believed that an asteroid impact was responsible for the extinction of the dinosaurs and many other species, which took place approximately 65 million years ago.
What are the effects of collision of the asteroids?The exact effects of this collision would have been massive, including:
A massive shockwave that would have caused widespread destruction and firesA tsunamis that would have flooded coastlinesA massive release of dust and debris into the atmosphere, blocking out the sun and causing a cooling of the planetA release of massive amounts of heat and energy, which would have caused massive fires and further atmospheric disruption.These events likely had a significant and long-lasting impact on the Earth's environment and ecology, and led to one of the largest mass extinctions in Earth's history.
Learn more about asteroids here: https://brainly.com/question/11996385
#SPJ1
A student pulls on a cart and applies a 20N force at an angle of 25 degrees above the horizontal to move a crate a distance of 10m across a rough floor that creates a frictional force of 2N. (A) Draw a FBD (B) How much work does the student do? (C) What is the total work done? (D) If the cart starts at rest how fast is it going after 10m?
2.4 Displacement of 27m north,31 m east,63m south and 58m west. Take east as the positive x-direction and north as the positive y-direction. 3. Check 2.4 with an accurate tail to head vector diagram
The resultant displacement of the object is 45 m.
What is the displacement of the object?
The resultant displacement of the object is calculated as follows;
Sum of the vertical displacement of the object is calculated as;
y = 27 m - 63 m = -36 m
Sum of the horizontal displacement of the object is calculated as;
x = 31 m - 58 m = -27 m
The resultant displacement of the object is calculated as follows;
d = √ [ ( -36² ) + ( - 27² ) ]
d = 45 m
Learn more about resultant displacement here: https://brainly.com/question/13309193
#SPJ1
The complete question is below;
2.4 Displacement of 27m north,31 m east,63m south and 58m west. Take east as the positive x-direction and north as the positive y-direction. 3. Check 2.4 with an accurate tail to head vector diagram. Calculate the resultant displacement of the vector
A man standing on a lift throws a ball upwards with the maximum initial velocity he can and is found to be equal to 55 m/s. After what time the ball returns to his hand if (a) the lift is stationary, (b) the lift is moving up with a uniform velocity of 7 m/s, (c)the lift is moving down with a velocity of 7 m/s. Also given g = 9.8 m/s2
What is the gauge pressure of the water right at the point p, where the needle meets the wider chamber of the syringe? neglect the pressure difference caused by the radius change?
The gauge pressure at point P, which has a zero-reference against the atmospheric pressure, is 3200 Pa. The needle meets the wider chamber of the syringe at the end of the needle.
Using Poiseuille's law, we can resolve the exercise. In a closed pipe, it states that for a fluid in laminar flow.
The equation:
ΔP = 8μLQ / 4r⁴
Where,
μ = viscosity of the fluid
L = length of the pipe
r = radius
Q = Av
= πr²v
= (3.14 x 10⁻³) (10)
= (3.14 x 10⁻⁵)
Hence, the gauge pressure:
ΔP = 8 (0.001) (4 cm) (3.14 x 10⁻⁵)) / 4 (0.001 m)⁴
= 3200 Pa
So, the gauge pressure of the water at point P is 3200 Pa.
And, the needle meets the wider chamber of the syringe at the end of the needle.
Learn more about Poiseuille's law here: https://brainly.com/question/14830017
#SPJ4