PHYSICS
COLLEGE

Answer:

Answer:

C) is zero

Explanation:

According to the law of energy conservation, the total mechanical energy of the object is conserved. A book falling a distance d would have a change in potential energy, resulting in the same change in kinetic energy. But the total mechanical energy must be the same. So there's 0 change in total energy of the system.

HIGH SCHOOL

Tahj walks 28 m south from Imhotep's front doors in order to get into his mothers car. If it takes him 7 s, what was average velocity?

The correct answer is 4

Using a gas power heater to warm a room

MIDDLE SCHOOL

In what ways are electromagnetic force and gravitational force similar

From looking at the two force equations, you can see the similarities and how gravitational force can be considered parallel to the force between two charges.

Besides being proportional to the inverse of the square of the separation: both forces extend to infinity,They also both travel at the speed of light.

In particular the gravity is a theory very different from any other field theory. The electromagnetic force, the nuclear weak force and the nuclear strong force are all described in terms of an exchange of particles. It means that the distant action is in reality the transport of a particle from the source to the destination.

So for example two electrons that repel each other, are exchanging photons to create the force.

So for example two electrons that repel each other, are exchanging photons to create the force.

HIGH SCHOOL

Vf=Vi+at solve for A please help

You said that Vf = Vi + at

Subtract Vi from each side: Vf - Vi = at

Divide each side by 't' : (Vf - Vi) / t = a

HIGH SCHOOL

In the circuit shown in the figure, four identical resistors labeled a to d are connected to a battery as shown. s1 and s2 are switches. which of the following actions would result in the greatest amount of current through resistor a?

A.nothing will happen