Sound waves from the engine of the plane are transmitted to the stationary observer on the ground. If the plane accelerates constantly from point A to point and the engine produces a constant sound during this trip, at which point will the observer hear the highest frequency sound wave?
A)
B)
C)
D)

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above

Both speed and velocity measure how fast something is moving. however, since speed is not a it does not require a(n question 6 options: a) quantity , unit b) magnitude, unit c) scalar, direction d) vector, direction

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