James Prescott Joule's experiments, such as stirring a container ...

[fagboi]

James Prescott Joule's experiments, such as stirring a container full of liquid, showed that
 
  A) thermal energy is actually a form of energy.
  B) the Newtonian energy forms kinetic, gravitational, elastic are conserved.
  C) all forms of energy are conserved.
  D) Mr. Joule did not know how to make a good batch of chili.
  E) radiant energy is actually a form of energy.

Question 2

A string is wrapped tightly around a fixed frictionless pulley that has a moment of inertia of 0.0352 kg  m2 and a radius of 12.5 cm.
 
  The string is pulled away from the pulley exerting a constant force of 5.00 N on the pullley causing the pulley to rotate. What is the speed of the string after it has unwound 1.25 m if the string does not slip on the pulley?
  A) 2.09 m/s
  B) 2.36 m/s
  C) 1.18m/s
  D) 3.18 m/s
  E) 4.95 m/s

[samiel-sayed]

Answer to Question 1

A

Answer to Question 2

B

[fagboi]

Excellent

[Hdosisshsbshs]

Gracias!