Two spheres are moving towards each other. Which of the following is the best evidence that the spheres have transferred energy from one to the other?

A. The friction of the surface decreases

B. Gravity is always acting on the spheres

C. The motion of the sphere changes

Or

D. Both of the spheres have the same mass

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

Aparticle moves in a circle 1.50 m in radius . through what angle in radians does it rotate if it moves through an arc length of 2.50m? what is the angle in degrees?