Spread 400gm of sand homogeneously in one saucer and put 400 gm of water in another saucer and place them under the sun. When the temperature is measured after 10 minutes, the temperature of the sand is found to be more than that of water, why

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