Question

1. Different amounts of thermal energy are added to each of three isolated samples, A, B, and C of lead. If the energy transfers are ordered as Qb>Qc>Qa and each sample undergoes the same temperature change, which samples has the largest mass?

2. A mouse is initially at rest on a horizontal turntable mounted on a frictionless vertical axle. As the mouse begins to walk clockwise around the perimeter which of the following statements must be true of the turntable?

a. It turns counterclockwise because angular momentum is conserved

b. It turns counterclockwise with the same angular velocity as the mouse

c. it also turns clockwise

d. it remains stationary

e. it turns counterclockwise because mechanical energy is conserved

Answer 1

The answer are in the images. Page number is mentioned at right top. As HOMEWORKLIB's answering guidelines, I need to answer only 1st question, as they are independent. However here I answer all.