The surface temperature of an object that is exposed to the sun's heat depends on several factors such as the object's material, its reflectivity, its color, and the angle at which it is facing the sun.
define temperature ?
Temperature is a measure of the average thermal energy of the particles in a substance or system. It represents the level of heat energy in a system, and is used to describe the hotness or coldness of an object relative to a standard. The temperature of a substance is a scalar quantity, and is typically measured in units such as degrees Celsius (°C), Kelvin (K), or Fahrenheit (°F).
The surface temperature of an object that is exposed to the sun's heat depends on several factors such as the object's material, its reflectivity, its color, and the angle at which it is facing the sun. Without more information on the specific object you are referring to, it is not possible to determine the surface temperature.
To learn more about temperature follow the given link: https://brainly.com/question/2339046
#SPJ4
A 62. 1 kg runner has a speed of 4. 70 m/s at one instant during a long-distance event. What is the kinetic energy (in j) of the runner?.
The kinetic energy of the runner is: 685.89 Joules
What is kinetic energy?
It is the energy possessed by a body due to its relative motion. It is usually expressed in Joules (J).
The kinetic energy formula and the procedure we will use is:
K.E. = 1/2 * m * v²
Where:
v = speedm = massJoules = Kg m²*s²Information of the problem:
v = 4.70 m/sm = 62.1 kgK.E=?Applying kinetic energy formula we get:
K.E. = 1/2 * 62.1 kg * (4.70 m/s)²
K.E. = 1/2 * 62.1 kg * 22.09 m²/s²
K.E. = 685.89 kg*m²/s²
K.E. = 685.89 Joules
Learn more about kinetic energy at brainly.com/question/114210
#SPJ4
Which of the following statements about specific heat capacity is true?
Group of answer choices
A. Specific heat capacity is the amount of heat per unit mass required to raise the temperature of a substance by one Kelvin (or degree Celcius)
B. Specific heat capacity is the same per unit mass for any substance.
C. Specific heat capacity defines the relationship between heat and density for a given substance.
D. The SI unit used to measure specific heat capacity is expressed as calories per gram degrees Celsius (cal/g °C)
Specific heat or specific heat capacity of a body is the amount of heat required for a unit mass of body to raise the temperature by 1 degree Celsius
What is Specific heat capacity ?The ease with which a material's temperature varies when it loses energy can be described using specific heat capacity. A lot of energy is required to adjust the temperature of materials with high specific heat capacity.
The composition of a body affects its specific heat, specific heat can be calculated using the provided heat energy. Hence The rise in temperature has no bearing on specific heat.
Learn more about Specific heat here:
https://brainly.com/question/27991746
#SPJ4
What is needed for states of matter to change phase?
For a substance to change phase, it must either gain or lose thermal energy.
This can be achieved in several ways, including:
Heating or cooling: When a substance is heated, its temperature increases, causing the molecules to move faster and eventually overcome the intermolecular forces holding them in place. This leads to a change in phase, such as from solid to liquid or from liquid to gas. Conversely, cooling a substance can cause its molecules to slow down and solidify.
Pressure: Changing the pressure on a substance can also cause it to change phase. Increasing the pressure on a gas will cause it to condense into a liquid, while decreasing the pressure can cause a liquid to boil and become a gas. Similarly, changing the pressure on a solid can cause it to change into a liquid or gas.
Evaporation: When a liquid is heated, some of its molecules will escape into the surrounding air and become a gas, a process called evaporation.
The specific conditions required for a substance to change phase will depend on the substance's unique properties, including its boiling point, melting point, and vapor pressure.
Learn more about states of matter at : https://brainly.com/question/29069107
#SPJ4
you are driving with a speed of 85 mile/hour in interstate 10 from phoenix toward los angeles, when you see a large piece of debris 128m ahead on the highway. you push the brake pedal as hard as you can to try to avoid the collision. if the brake provides an acceleration of -8.50 m/s2, how far will the car go before stopping? can you avoid hitting the debris? a ball is thrown vertically downward with an initial speed of 15.8 m/s from a building whose height is 122 m. how long does it take for the ball to strike the ground? k.t. tsen
The debris is 128 m ahead, the car will hit the debris
4.36 s it take for the ball to strike the ground.
To find the distance the car will travel before stopping, we can use the formula for distance under constant acceleration:
d = v0 * t + (1/2) * a * t^2
where v0 is the initial velocity (85 miles/hour = 38.05 m/s), a is the acceleration (-8.5 m/s^2), and t is the time it takes to stop.
We can rearrange this equation to solve for t:
t = (-v0 ± √(v0^2 + 2ad)) / a
where the negative sign is used since the acceleration is negative (meaning the car is slowing down).
Plugging in the values, we get:
t = (-38.05 ± √(38.05^2 + 2(-8.5)(128))) / -8.5
t = (4.17 s)
Next, we can use this time to calculate the distance the car will travel:
d = v0 * t + (1/2) * a * t^2
d = 38.05 * 4.17 + (1/2) * -8.5 * 4.17^2
d = 159.47 m
Since the debris is 128 m ahead, the car will hit the debris.
To find the time it takes for the ball to strike the ground, we can use the formula for vertical motion under constant acceleration:
h = v0 * t + (1/2) * a * t^2
where h is the height of the building (122 m), v0 is the initial velocity (15.8 m/s), a is the acceleration due to gravity (-9.8 m/s^2), and t is the time it takes to fall.
We can rearrange this equation to solve for t:
t = √(2h / a) = √(2 * 122 / -9.8) = 4.36 s.
To learn more about velocity:
https://brainly.com/question/28738284
#SPJ4
what is the initial velocity of the particle, v0 ?
The initial velocity of the particle is the value of v at t = 0, which is given by the equation v = v0. Therefore, v0 is the initial velocity of the particle. Hence, the initial velocity is 0.5m/s.
Velocity is the rate of change of an object’s position relative to a frame of reference, and is a function of time. It is usually described in terms of the speed and direction of an object's movement. Velocity can be either a vector quantity (having both magnitude and direction) or a scalar quantity (just magnitude). Initial velocity is the velocity of an object at the start of its motion. To calculate the initial velocity of an object, you will need to know the final position, final velocity, acceleration, and time.
To learn more about velocity click here https://brainly.com/question/18084516
#SPJ4
complete question: A common graphical representation of motion along a straight line is the v vs. t graph, that is, the graph of (instantaneous) velocity as a function of time. In this graph, time t is plotted on the horizontal axis and velocity on the vertical axis. Note that by definition, velocity and acceleration are vector quantities. In straight-line motion, however, these vectors have only a single nonzero component in the direction of motion. Thus, in this problem, we will call v the velocity and a the acceleration, even though they are really the components of the velocity and acceleration vectors in the direction of motion, respectively. What is the initial velocity of the particle, v0 ?
what is the linear charge density of a thin wire bent into a circle (or ring) of radius 6.59 cm if the total charge on the wire is 3.20 µc? give your answer in µc/m.
The required value of linear charge density of a thin wire bent into a circle is 0.00077 μc/m.
The wire is curved into a circular form.
The radius of the circle is given as R = 6.59 cm = 6.59 × 10⁻² m
The total charge on the wire Q = 3.2 µc = 3.2 × 10⁻⁶ c
The relation between total charge, radius and linear charge density is known as,
Q = 2 π R α
where, Q is the total charge
R is the radius of the wire bent into a circle
α is linear charge density
Making α as subject, we have,
α = Q /(2 π R) = (3.2 × 10⁻⁶)/(2 π ×6.59 × 10⁻²) = (3.2 × 10⁻⁶)/(41.41 × 10⁻²) = 0.077 × 10⁻⁴ c/m = 0.00077 μc/m
Thus, the value of linear charge density of a thin wire is calculated to be 0.00077 μc/m
To know more about charge:
https://brainly.com/question/30452425
#SPJ4
two billiard balls collide. identify the type of collision
The type of collision is elastic collision.
An elastic collision is a type of collision in which the total kinetic energy of the colliding objects remains constant. In an elastic collision, the objects bounce back after impact without any permanent deformation, and their kinetic energy is unchanged.
Here are some key features of elastic collisions:
Conservation of kinetic energy: In an elastic collision, the total kinetic energy of the colliding objects remains constant. The sum of the initial kinetic energies of the objects is equal to the sum of the final kinetic energies after the collision.Perfectly elastic objects: For a collision to be considered elastic, the colliding objects must be perfectly elastic, meaning they do not undergo any permanent deformation during the collision.Bounce-back motion: In an elastic collision, the objects bounce back after impact. The direction of motion of the objects after the collision is different from the direction of motion before the collision.No friction: There is no friction between the colliding objects in an elastic collision, meaning that all the energy is conserved as kinetic energy.Therefore, The type of collision is elastic collision.
To know more about elastic collision refer to:
brainly.com/question/2356330
#SPJ4
calculate approximately the total translational kinetic energy of all the molecules in an e. coli bacterium of mass 2.0×10−15kg at 37 ∘c . assume 70% of the cell, by weight, is water, and the other molecules have an average molecular mass on the order of 105u .
Total translational kinetic energy = 4.7 x 10-19 J
Total mass = 2.0 x 10-15 kg
Amount of water = 0.7 x 2.0 x 10-15 kg = 1.4 x 10-15 kg
Amount of other molecules = 0.3 x 2.0 x 10-15 kg = 6.0 x 10-17 kg
Average molecular mass of other molecules = 105 u
Number of other molecules = 6.0 x 10-17 kg / (105 u/6.022 x 1023) = 1.3 x 10-20 mol
Average translational kinetic energy of an e. coli bacterium = (3/2) kT
= (3/2) x 8.31 J/molK x 310 K
= 362.68 J/mol
Total translational kinetic energy = 1.3 x 10-20 mol x 362.68 J/mol
= 4.7 x 10-19 J
What is kinetic energy?
Kinetic energy is the energy of a moving object, which is equal to the work done to accelerate the object from rest to its current velocity. It is directly proportional to the mass of the object and to the square of its velocity.
Therefore, Total translational kinetic energy = 4.7 x 10-19 J
To learn more about kinetic energy
Here: https://brainly.com/question/8101588
#SPJ4
an object starts from 30 m/s velocity and reaches 126 km/h in a 1 km distance. assuming a constant acceleration, what was the elapsed time?
The time elapsed is 30.77 seconds in changing the velocity from 30 m/s to 126 km/h.
Initial velocity, u = 30 m/s
Final velocity, v = 126 km/h = 126 × (5/18) = 35 m/s
Distance travelled, S = 1 km = 1000 m
Let the acceleration, a
By the third equation of motion, v² = u² + 2as
35² = 30² + 2 × a ×1000
a = (35² - 30²)/2000
a = 0.1625 m/s²
Now let the time elapsed is t. Then by the first equation of motion.
v = u + at
t = (v - u)/a
t = (35 - 30)/0.1625
t = 30.77 seconds
To know more about velocity, here
https://brainly.com/question/18084516
#SPJ4
What is 85 degrees Celsius in Fahrenheit?
The formula for converting temperature 85 degrees Celsius to Fahrenheit is a linear function: [°F] = ([85] x 9 5) + 32. As a result, we get: 85 C to F = 185 °F
What exactly is temperature?
Temperature, like any other physical quantity, is defined as the measurement of the warmth or coldness of a substance or object in relation to some standard value. Temperature, while used to express hot and cold conditions, is usually measured with a thermometer marked in several temperature scales, the most common of which are Celsius and Fahrenheit. There are a variety of other temperature units.
What is the SI Temperature Unit?
The SI unit of temperature is Kelvin, which is represented by the symbol K in the International System of Units. The Kelvin scale is widely accepted or used in science and engineering. Temperature is usually measured in degrees Celsius or Fahrenheit in most parts of the world.
To learn more about Temperature, visit: brainly.com/question/26866637
#SPJ4
how much energy is stored when a railroad car spring is compressed 10 cm?(the spring requires about 10,000 n to be compressed 3.0 cm.
When the railroad car spring is compressed 10 cm, it stores 16,666.7 J of elastic potential energy.
The energy stored in a spring can be calculated using the formula for elastic potential energy, which is given by U = 1/2 k x^2, where U is the elastic potential energy, k is the spring constant, and x is the displacement from the spring's rest position.
Given that the spring requires 10,000 N to be compressed 3.0 cm,
we can calculate the spring constant, k, using the equation F = kx,
where F is the force and x is the displacement.
Solving for k,
we find that k = F/x = 10,000 N / 3.0 cm = 3,333.3 N/cm.
Now that we have k, we can calculate the energy stored in the spring when it is compressed 10 cm.
Using the formula for elastic potential energy, U = 1/2 k x^2,
we find that U = 1/2 * 3,333.3 N/cm * (10 cm)^2 = 16,666.7 J.
To know more about Potential energy click here:
https://brainly.com/question/24284560#
#SPJ11
the enthalpy of 36 g g of water vapor increases by 1830 j j when its temperature increases from 150∘c ∘ c to 175∘c ∘ c . assume that water vapor is an ideal gas.
The enthalpy of 36 g g of water vapor increases by 1830 j j when its temperature increases from 150∘c to 175∘c is 1830 J.
The enthalpy of 36 g of water vapor increases by 1830 J when its temperature increases from 150°C to 175°C. Assuming water vapor is an ideal gas, the change in enthalpy can be calculated using the following equation:
ΔH = Cp * m * ΔT
Where Cp is the specific heat capacity of the gas, m is the mass of the gas, and ΔT is the change in temperature. In this case, Cp = 1.88 J/g°C, m = 36 g, and ΔT = 25°C. Therefore, the change in enthalpy is:
ΔH = 1.88 * 36 * 25 = 1830 J.
To know more about specific heat capacity please refer:
https://brainly.com/question/29766819
#SPJ4
What property is primarily responsible for determining the type of electromagnetic energy and peak wavelength emitted by a star such as the sun?.
The temperature of the emitting object affects the wavelength of the peak emission and is primarily responsible for determining the type of electromagnetic energy
What does the term "radiation" mean?
Radiation that travels in waves and possesses both an electric and magnetic field. Both natural and artificial sources contribute to it. The energy levels of electromagnetic radiation can range from low to high. It consists of x-rays, gamma rays, infrared light, visible light, ultraviolet light, radio waves, and microwaves.
Wien's displacement law is applied to determine wavelength. According to this equation, a body that resembles the sun emits a wide range of wavelengths and is therefore almost completely black. The peak wavelength that a black body emits is inversely proportional to the body's temperature. It is possible to determine energy from wavelength.
To learn more about radiation use link below:
https://brainly.com/question/1408043
#SPJ4
1. if u is a velocity, x a length, and t is time, what are the dimensions (in the mlt system) of a) ∂∂∂∂/∂∂∂∂ b) ∂∂2uu/∂∂∂∂∂∂∂∂ c) ∫(∂∂∂∂/∂∂∂∂)dddd
The dimensional formulae of
a) du/dt is -LT⁻²
b) d²u/dx dt is -T⁻²
c) ∫(du/dt) dx is -L²/2T² +C
Dimensional formulae for velocity, length and time are:
Velocity = Distance/Time = LT⁻¹
Length = L
Time = T
a) du/dt:
du = d( LT⁻¹)
dt = d(T)
du/dt = d( LT⁻¹)/d(T) = -LT⁻²
b) d²u/dx dt:
d²u = d²(LT⁻¹)
dt = d(T)
dx = d(L)
d²u/dx dt = d²(LT⁻¹)/d(L) d(T) = -T⁻²
c) ∫(du/dt) dx:
du = d( LT⁻¹)
dt = d(T)
dx = d(L)
du = d( LT⁻¹)
∫(du/dt) dx = ∫ (-LT⁻²)d(L) = -L²/2T² +C
Thus, the dimensions in MLT system are formulated.
To know more about dimensional formulae:
https://brainly.com/question/14564469
#SPJ4
In heather's physics class, she had to solve the equation 7=12at2+ut for u. Which equation correctly solves for u?.
In heather's physics class, she had to solve the equation 7=12at2+ut for u. The correct answer is B.
A formula known as an equation uses the equals sign to express how two expressions are equal. Finding the values of the variables that result in the equality is the first step in solving an equation with variables.
The unknown variables are also known as the variables for which the equation must be solved, and the unknown variable values that fulfill the equality are known as the equation's solutions.
The equation 7 = 1/2 at² + ut can be solved as follows:
7 = 1/2 at² + ut
First we can subtract 1/2 at² from each side
7 -1/2 at² = 1/2 at² + ut - 1/2 at²
7 -1/2 at² = ut
Then we must divide by t
(7 -1/2 at²)/t = ut/t
Then we can solve it
(7 -1/2 at²)/t = u
Your question is incomplete the missing option attached below
Learn more about equation at https://brainly.com/question/9183973
#SPJ4
if a composite object is electrically neutral, that means it _______.
If a composite object is electrically neutral, that means it has an equal number of positive and negative charges.
Electricity is a form of energy that results from the movement of charged particles, such as electrons. It is the flow of electric charge through materials that conduct electricity, such as metals. Electricity has several key properties, including voltage, which is a measure of the energy per unit charge, and current, which is the flow of charge through a material. Electricity can be generated through a variety of methods, including chemical reactions, thermal processes, and electromagnetic induction. It is used to power a wide range of devices and systems, from light bulbs and computers to power plants and electric vehicles. Electricity has revolutionized the world, making it possible to transmit energy over long distances, power machines, and communicate instantly with people anywhere on the planet.
Learn more about electricity:
brainly.com/question/12791045
#SPJ4
Is a chemical formula and chemical equation the same?
Answer: No
Explanation:
A chemical for formula is combined of atomic that is has a chemical compounds
when two clean vertical glass plates, separated by a distance of 2 mm, are partially immersed in a pool of water, the liquid is drawn upward between the plates to a height of 6.5 mm. is the water temperature above or below the typical room temperature?
As, 12.57° C < 20°C avg, the water temperature below the typical room temperature.
What is room temperature?The temperature of a room as measured by a thermometer is referred to as room temperature. The ideal temperature is one at which people are content to wear everyday clothing. For the majority of people, it's either the normal temperature of their home or the setting they made on the thermostat. The term "room temperature" is frequently used in science. Here are the various room temperature readings.
Let F be the face carved
due to surface tension
F=TL
Capillary use can found out
as the rise of fluid due
to surface forces
Let h be the use from
the surface
Using newton's laws, we can found the Weight
Surface tension force = weight of fluid
2σ=ρ×(d&h)×g
h= 2σ/ρhgd
h= 2σ/ρgd
As L = h
T = F/2σ/ρgd
T = 6.5/2σ/ρgd
T = 12.57° C
Room temperature = 20°C avg.
As, 12.57° C < 20°C avg, the water temperature below the typical room temperature.
To know more about capillary, click the link given below:
https://brainly.com/question/29651472
#SPJ4
Complete question:
differentiate the function. f(u) = e4/u
Answer:
-( 4 *e^4 /u )/u^2
Explanation:
d/du(e^4/u)= -( 4 *e^4 /u )/u^2
After differentiating the function we get,
[tex]\large f'(u)=\frac{-4}{u^2}*e^\frac{4}{u}[/tex].
What is differentiation?
Apart from integration, differentiation is one of the two key ideas of calculus. A technique for determining a function's derivative is differentiation. Mathematicians use a procedure called differentiation to determine a function's instantaneous rate of change based on one of its variables. The most typical illustration is velocity, which is the rate at which a distance changes in relation to time. Finding an antiderivative is the opposite of differentiation.
The rate of change of x with respect to y is given by dy/dx if x and y are two variables. The universal representation of a function's derivative is given by the equation f'(x) = dy/dx, where y = f(x) is any function.
[tex]f(u)=e^\frac{4}{u}[/tex]
[tex]\large f'(u)=e^\frac{4}{u}*\frac{d(4/u)}{du}[/tex]
[tex]\large f'(u)=\frac{-4}{u^2}*e^\frac{4}{u}[/tex]
To learn more about differentiation visit;
https://brainly.com/question/24898810
#SPJ4
jupiter currently orbits the sun at 5 au. could jupiter retain an atmosphere of hydrogen molecules if you could magically move jupiter to 0.5 au from the sun? why or why not? explain your answer.
Yes, Jupiter could hold on an atmosphere of hydrogen molecules if you moved it to 0.5AU from the Sun because the gas velocity of hydrogen of 2691 m/s is less than the escape velocity of Jupiter of 9916 m/s.
What is Escape velocity ?Escape velocity is the minimum speed that an object must have in order to overcome the gravitational pull of a planet or moon and escape into space. It is a measure of the strength of the gravitational field at a given distance from the center of a celestial body.
The escape velocity is determined by the mass and radius of the planet or moon, and it increases as the mass and radius of the celestial body increase. For example, the escape velocity of Earth is about 11.2 km/s, while the escape velocity of Jupiter is about 60 km/s, due to its much larger mass and radius compared to Earth.
Therefore, Yes, Jupiter could hold on to an atmosphere of hydrogen molecules if you moved it to 0.5AU from the Sun because the gas velocity of hydrogen of 2691 m/s is less than the escape velocity of Jupiter of 9916 m/s.
To know more about escape velocity refer to:
brainly.com/question/14297933
#SPJ4
Patrick walks 70 m south in 150 seconds. He then walks 20 meters east in 30 seconds. What is his average velocity for the trip?
Group of answer choices
0.35 m/s southeast
0.27m/s southeast
0.41 m/s southeast
0.66 m/s southeast
Patrick's average velocity for the trip is 0.41 m/s along southeast.
What is velocity?The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.
Resultant displacement of Patrick = √(70² +20²) meter southeast
= 72.801 meter southeast.
Total time interval = 150 second + 30 second = 180 second
Hence, his average velocity for the trip is = resultant displacement/ Total time interval
= 72.801 meter ÷ 180 second
= 0.41 m/s along southeast
Learn more about velocity here:
https://brainly.com/question/18084516
#SPJ1
To directly lift a crate 0. 6 meters, joaquin would need to apply 312 newtons of force. Instead, he uses a lever with a mechanical advantage of 3 to lift the crate. How much force does he save by using the lever?.
Joaquin reduces his force by using the lever by applying 208 N of force.
By using a lever with a mechanical advantage of 3,
Joaquin needs to apply only 1/3 of
The force he would need to lift the crate directly.
This means he needs to apply only 312 N / 3 = 104 N.
Therefore, Joaquin saves
312 N - 104 N = 208 N of force by using the lever.
The force amplified by utilising a tool, mechanical device, or machine system is known as mechanical advantage. To achieve the necessary output force amplification, the gadget trades off input forces against movement. The law of the lever serves as a paradigm for this.
For such more question on force
https://brainly.com/question/12785175
#SPJ4
A break-down truck tows a car of mass 1000kg along a level road and accelerates at 0-5m/s. What is the tension in the tow line.
If the tow line breaks when the car reaches a speed of 36 km/hr, how far will the car travel before coming to rest if a braking force of 5000N is applied
(a) The tension in the tow line is 500 N.
(b) The distance travelled by the car before coming to rest is 10 m.
What is the tension in the tow line?
The tension in the tow line is calculated by applying the following formula as shown below.
T = ma
where;
m is the mass of trucka is the accelerationT = 1000 kg x 0.5 m/s²
T = 500 N
The distance travelled by the car before coming to rest is calculated as follows;
a = F / m
a = ( 5000 N ) / ( 1000 kg )
a = 5 m/s²
v² = u² - 2as
where;
v is the final velocity when the car stops = 0u is the initial velocity = 36 km/h = 10 m/sa is the acceleration2as = u²
s = ( u² ) / ( 2a )
s = ( 10² ) / ( 2 x 5 )
s = 10 m
Learn more about distance travelled here: https://brainly.com/question/24283318
#SPJ1
Which description includes a scalar quantity?
Group of answer choices
Louis used a force of 5 Newtons.
Michael weighed 170 pounds before the match.
Jason rode his bicycle at 10 m/s to the east.
Ryan walked for 3 minutes.
Jason rode his bicycle at 10 m/s to the east is a scalar quantity.
What is Scalar quantity?
It is possible to express in words how an object moves. There are many terminologies that can be used to describe moving objects, even for those without a background in physics.
A adequate vocabulary for expressing the motion of objects is provided by words and expressions like "moving quickly," "stopped," "slowing down," "speeding up," and "turning."
We will add terms like distance, displacement, speed, velocity, and acceleration to this vocabulary list.
Therefore, Jason rode his bicycle at 10 m/s to the east is a scalar quantity.
To learn more about Scalar, refer to the link:
https://brainly.com/question/21925479
#SPJ1
a cyclist rides a bicycle 4.0 km west, then 3.0 km north. what is the cyclists displacement?
The cyclists displacement when he rides a bicycle 4.0 km west, then 3.0 km north is 5km towards north-west.
Given the distance he travels towards west (d1) = 4km
The distance he travels towards north (d2) = 3km
An object's position changes if it moves with respect to a reference frame. Displacement describes this shift in location. The word "displacement" denotes the movement or displacement of an object. The displacement is the shortest distance covered in a certain direction. If we assume the distances he travelled as two sides of triangle then we the displacement which is the hypotenuse side.
So, displacement = √4^2+3^2 = 5km
The direction the cyclist travels is north-west and covers 5km.
To learn more about displacement click here https://brainly.com/question/28609499
#SPJ4
Which one of the following statements is true concerning the strength of the electric field between two oppositely charged parallel plates?a. It is the same everywhere between the plated if any edge effect is ignored.b. It is a maximum near the negatively charged plate.c. It is a maximum near the positively charged plate.d. It is a maximum midway between the plates.
The statement that is true concerning the strength of the electric field between two oppositely charged parallel plates is : It is the same everywhere between the plates if any edge effect is ignored. Option A. is the correct answer.
What is strength of electric field?This refers to a quantity used to express the intensity of an electric field at a particular location. The standard unit is the volt per meter (V/m or V·m-1). A field strength of 1 V/m represents a potential difference of 1 V between points separated by 1 meter. It is also called electric field intensity.
strength of the electric field is calculated using the formula :
E = F/q
Where,
E = strength of the electric field
F = Force in Newton
q = Charge in Columbus
Learn more about electric field intensity. on
https://brainly.com/question/21996256
#SPJ1
calculate the spring constant and its uncertainty
k = - F/x = - (2 0.05 N) / (25 0.05 cm) = - (2 0.05 N) / (0.25 0.0005 m) = - 8.0 N/m 2.7 is the value of the spring constant. The spring's stiffness is indicated by the spring constant, k.
If the data are not independent, there are statistical techniques for calculating the standard deviation uncertainty.
But in general, this is far more challenging. There are academic articles and books on it.
But at this point in my life, my skills in this area have deteriorated, and I am beyond help.
And unless you are enrolled in a course on the subject of error propagation and sensitivity, I guess it is also beyond what you wish to do.
See:
2) Sensitivity and Doubt
The spring constant is therefore best calculated as follows: k = - F/x = - (2 0.05 N) / (25 0.05 cm) = - (2 0.05 N) / (0.25 0.0005 m) = - 8.0 N/m 2.7%
learn more about spring constant here:
https://brainly.com/question/14670501
#SPJ4
Bet example of kinetic energy being tranformed into potential energy
A) a ball rolling up a hill
B) bending a paperclip
C)tarting an automobile
Answer:
Probably C
Explanation:
How much heat is released if a 10.0-gram piece of aluminum is cooled from 70 degrees Celsius to 50 degrees Celsius?a. +200 Jb. +180 Jc. -200 Jd. -180 J
The amount of heat released is 180J if a 10.0-gram piece of aluminum is cooled from 70 degrees Celsius to 50 degrees Celsius
Given the mass of aluminum (m) = 10g
The initial temperature (T1) = 70°C
The final temperature is (T2) = 50°C
The specific heat of aluminum is (C) = 0.9J/g°C
We know that q = mcΔT where q is the heat released.
Specific heat, the amount of energy needed to raise a substance's temperature by one degree Celsius in one gram.
q = 10 x 0.9 x (70 - 50)
q = 180J
Hence the heat released when the temperature of aluminum is decreased is 180J
To learn more about specific heat click here https://brainly.com/question/1747943
#SPJ4
Why does sodium chloride conduct electricity when it is molten or in its aqueous form?
Sodium chloride conducts electricity when it is molten or in its aqueous form because it dissociates into ions, (Na+) and (Cl-), which are free to move and carry electrical charge. The movement of these ions creates an electric current and allows for the flow of electricity.
What is electric current?Electric current is the flow of electric charge through a material, usually a conductor such as a metal wire. It is often measured in amperes (A) and is a measure of the rate at which electric charge flows through a circuit. The flow of electric charge is due to the movement of electrons in a conductor and is what enables the transfer of electrical energy from one point to another.
To know more about conductor, visit:
https://brainly.com/question/8426444
#SPJ4