4. Compare how thermal and electrical energy transfer between objects and give an example of how you can experience electrical energy and thermal energy in daily life.

5. Explain the statement "No one really makes energy" and "No one really uses up energy" by using the Law of

conservation of energy and an evidence of energy transformations given in the text.

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2