The graph on the right shows the velocity of a cart that was pushed toward an elastic band and
then reversed direction when coming in contact
with the band
a. Label when the kinetic energy of the cart
is increasing and when it is decreasing.
b. Label when the elastic potential energy of
the band is increasing and when it is
decreasing
c. Label when the chemical potential energy
of the hand is decreasing.

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

In the first law of thermodynamics, triangle e=q-w, what does q stand for