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3 years ago

Four balls have the same temperature. Which ball has the most thermal energy?

Physics

1 answer:

ollegr [7]3 years ago

6 0

Answer:

The ball with the largest mass and highest specific heat capacity.

Explanation:

This is because, the thermal energy which is Q = mcΔT and since c = specific heat capacity of the ball, m = mass of ball and ΔT = temperature change = constant,

Q ∝ mc

So the thermal energy is directly proportional to mass and specific heat capacity of the ball, So, the ball with the highest product of these two properties has the highest thermal energy.

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PLS HELP!!! The quarter back runs 75 meters down a football field in 12 seconds to score a touchdown. How fast did he run? A. 0.

atroni [7]

Answer:

B.6

Explanation:

speed = distance / time

= 75m / 12s

= 6.25 m/s

The closest answer is b. 6 m/s

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4 years ago

Name the 9 types of energy

Ugo [173]

Hello There!

-Energy Is The Ability To Do Work-

Energy comes into different forms but they can all be placed in two different categories. These categories are "potential" which means stored energy and energy of position and "kinetic" which is the energy of motion.

POTENTIAL ENERGY Stored energy and the energy of position

CHEMICAL ENERGY Energy in the bonds of atoms and molecules

MECHANICAL ENERGY Energy stored in objects by tension

NUCLEAR ENERGY Energy stored in the nucleus of an atom

GRAVITATIONAL Energy that is stored in an object's height

ELECTRICAL ENERGY Delivered by tiny charged particles called electrons

KINETIC ENERY The energy of motion

THERMAL ENERGY The vibration and movement of atoms and molecules in substances.

RADIANT ENERGY Electromagnetic energy that travels in waves

6 0

4 years ago

If an electron moves in a circle of radius 21 cm perpendicular to a B field of 0.4 T, what are the speed of the electron and the

kodGreya [7K]

Answer:

$v = 4.048 *10^6$ m/s

Angular frequency = $1.92 * 10^7$

Explanation:

As we know

$v = \frac{qBr}{m}$

q is the charge on the electron = $3.2 * 10^{-19}$ C

B is the magnetic field in Tesla = $0.4$ T

r is the radius of the circle = $0.21$ m

mass of the electrons = $6.64 * 10^{-27}$ Kg

Substituting the given values in above equation, we get -

$v = \frac{3.2 * 10^{-19}*0.4*0.21}{6.64 * 10^{-27}} \\v = 4.048 *10^6$ m/s

Angular frequency =

$\frac{4.048 * 10^6 }{0.21} \\1.92 * 10^7$

8 0

3 years ago

1. ____ outer planet 2. ____ density

mestny [16]

$\huge{\textbf{\textsf{{\color{navy}{An}}{\purple{sw}}{\pink{er}} {\color{pink}{:}}}}}$

1. Outer planets - c. gaseous, spherical, cleared its neighborhood.

2. Density - f. amount of matter in an object, in a given space.

3. Orbital distance - e. Distance between any planet and the sun.

4. Mass - a. Amount of matter in an object.

5. Asteroid - b. Irregular rock orbiting between mars and Jupiter.

6. Volume - d. amount of space an object takes up.

Thanks
Hope it helps

6 0

3 years ago

Read 2 more answers

4. Describe how the velocity of an object changes if it undergoes uniformly acceleration motion. Can its direction change?

valentinak56 [21]

Answer:

n the case of linear motion, the change occurs in the magnitude of the velocity, the direction remaining constant.

In the case of circular motion, the magnitude of the velocity remains constant, the change in its direction occurring.

Explanation:

Velocity is a vector therefore it has magnitude and direction, a change in either of the two is the consequence of an acceleration on the system.

In the case of linear motion, the change occurs in the magnitude of the velocity, the direction remaining constant.

$a_{t}$ = (v₂-v₁)/Δt

In the case of circular motion, the magnitude of the velocity remains constant, the change in its direction occurring.

$a_{c}$ = v2/R

In the general case, both the module and the address change

a = Ra ( a_{t}^2 + a_{c}^2)

4 0

3 years ago