Which situation is an example of transferring heat by means of convection?
a) the sun warming the earth
b) the weather patterns outside
c) you toasty-warm in some footy pajamas
d) you accidentally grabbing the hot pan from the oven

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