A basket of negligible weight hangs from a vertical spring scale of force constant 1500 N/m . If you suddenly put an adobe brick of mass 3.00 kg in the basket, find the maximum distance that the spring will stretch. Check all that apply.

a. The spring is initially unstretched.
b. After the brick has been placed in the basket, the spring is stretched.
c. When the brick is first placed into the basket, it has zero velocity.
d. When the spring is stretched to the maximum amount, the brick has zero velocity.
e. The brick’s final position is lower than its initial position.

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Which of the following are appropriate acceleration units?