The rate of doing work, or of transforming energy, can be ...

[B]

The rate of doing work, or of transforming energy, can be measured in
 
  A) joules.
  B) newtons.
  C) kilowatt-hours.
  D) Calories.
  E) watts.

Question 2

A ballerina spins initially at 1.5 rev/s when her arms are extended. She then draws in her arms to her body and her moment of inertia becomes 0.88 kg  m2, and her angular speed increases to 4.0 rev/s. What was her initial moment of inertia?
 
  What will be an ideal response?

[ricroger]

Answer to Question 1

E

Answer to Question 2

2.3 kg  m2

[B]

Gracias!

[upturnedfurball]

Excellent