Aparticle starts at the origin and moves away from it in a straight line. after 1.6 seconds it is 12.8 meters from the origin. it then reverses direction due to a force field with a like charge. after 3.8 seconds total , the particle is at -9.23 m what is the average velocity of the particle over 3.8 s?

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.

Compare the patterns of the two waves shown in the image. which statement is true about these waves?