Explain how you can tell the difference between the voices of two people if they are saying the same word.

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

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

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class