A vertical spring with k = 6900 N/m is compressed 0.060 m. A 0.13 kg ball is placed on top of the spring and released, launching it into the air. How far above the launching point—corresponding to the spring’s free length—is the ball when it has a speed of 2.0 m/s? (Neglect air friction.) Group of answer choices

1.2 m

160 m

19 m

9.5 m

94 m

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

If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)

Ablock of mass 1.5 kg slides down an inclined plane that has an angle of 15. if the inclined plane has no friction and the block starts at a height of 3 m, how much kinetic energy does the block have when it reaches the bottom? acceleration due to gravity is g = 9.8 m/s2. a. 6.8 j b. 50.9 j c. 0 j d. 44.1 j