If we double only the amplitude of a vibrating ideal mass-and-spring system, the mechanical energy of the system:
a. increases by a factor of 2.
b. increases by a factor of 3.
c. does not change.
d. increases by a factor of 4.
e. increases by a factor of √2.

Ahowler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 4.6 km. assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 w/m2. what is the acoustic power emitted by the howler

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.