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damaskus [11]
3 years ago
6

Based on the diagram of a ball rolling down hill, what statement is true? A) The ball in box C has less kinetic energy than the

ball in box B. B) The ball in box A has more kinetic energy than the ball in box B. C) The ball in box C has more potential energy than the ball in box B. D) The ball in box C has less potential energy than the ball in box B.
Physics
1 answer:
Gre4nikov [31]3 years ago
7 0

Answer:

Explanation:The sum of kinetic energy and potential energy is called mechanical energy.

The kinetic energy is possessed by an object by virtue of its motion and the potential energy is due to height of the object under the action of gravity.

Mathematically,

v is the velocity of the object

h is the height from ground

We know that the potential energy at topmost point is maximum and it is least at ground.

So, from the given figure it is clear that the ball in box C has less potential energy than the ball in box B.

Hence, the correct option is (d) "The ball in box C has less potential energy than the ball in box B".

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Lelu [443]

The most common metals used for permanent magnets are iron, nickel, cobalt and some alloys of rare earth metals

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4 years ago
All atomic nuclei except those of ordinary hydrogen contain neutrons<br> true or false
MatroZZZ [7]
The answer to this question is False
8 0
3 years ago
Three charges, q1 = +2.06 x 10-9 C, q2 = -3.27 x 10-9 C, and q3 = +1.05 x 10-9 C, are located on the x-axis at x1 = 0, x2 = 10.0
lisov135 [29]

Answer:

The resultant force on charge 3 is Fr= -2,11665 * 10^(-7)

Explanation:

Step 1: First place the three charges along a horizontal axis. The first positive charge will be at point x=0, the second negative charge at point x=10 and the third positive charge at point x=20. Everything is indicated in the attached graph.

Step 2: I must calculate the magnitude of the forces acting on the third charge.

F13: Force exerted by charge 1 on charge 3.

F23: Force exerted by charge 2 on charge 3.

K: Constant of Coulomb's law.

d13: distance from charge 1 to charge 3.

d23: distance from charge 2 to charge 3

Fr: Resulting force.

q1=+2.06 x 10-9 C

q2= -3.27 x 10-9 C

q3= +1.05 x 10-9 C

K=9-10^9 N-m^2/C^2

d13= 0,20 m

d23= 0,10 m

F13= K * (q1 * q3)/(d13)^2

F13=9,7335*10^(-8) N

F23=K * (q2 * q3)/(d23)^2

F23= -3,09 * 10^(-7)

Step 3: We calculate the resultant force on charge 3.

Fr=F13+F23= -2,11665 * 10^(-7)

3 0
3 years ago
What happens to the mass and volume if density increases
nikitadnepr [17]
They all stay the same regardless
7 0
4 years ago
A piston-cylinder chamber contains 0.1 m3 of 10 kg R-134a in a saturated liquid-vapor mixture state at 10 °C. It is heated at co
vaieri [72.5K]

Answer:

(A) 10132.5Pa

(B)531kJ of energy

Explanation:

This is an isothermal process. Assuming ideal gas behaviour then the relation P1V1 = P2V2 holds.

Given

m = 10kg = 10000g, V1 = 0.1m³, V2 = 1.0m³

P1 = 101325Pa. M = 102.03g/mol

P2 = P1 × V1 /V2 = 101325 × 0.1 / 1 = 10132.5Pa

(B) Energy is transfered by the r134a in the form of thw work done in in expansion

W = nRTIn(V2/V1)

n = m / M = 10000/102.03 = 98.01mols

W = 98.01 × 8.314 × 283 ×ln(1.0/0.1)

= 531kJ.

6 0
3 years ago
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