A friend talks to you as she walks past you at a speed of 2.25 m/s. why do you not notice a Doppler shift in her voice as she passes?

What is the formula for calculating wave speed?

A man pushes a lawn mower on a level lawn with a force of 186.5 N. If 3.8% of this force is directed downward, then how much work is done by the man in pushing the mower 7.4m?

Rex makes himself a bowl of cereal. He puts 28 g of cereal in a bowl and then adds 245 g of milk. Before eating the cereal, he remembers that he has not yet finished his homework, and he runs off to his room to complete his work.

Suppose you know only the position of an object at instants A and B. Is more than one displacement possible? Is more than one average velocity possible? Is more than one average speed possible?

Several vectors, which are not all in the same plane, add together to give a zero resultant. What is the minimum number of vectors which can satisfy this requirement?

In a inverse relationship, when one variable increases, the other

A chair of weight 75.0 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 42.0 N directed at an angle of 38.0 ∘ below the horizontal and the chair slides along the floor.

A car travels 20 km west, then 20 km south. what is the magnitude of its displacement? A) 0 km B) 20 km C) 28 km D) 40 km

A sport car accelerates from rest to 29 m/s in 4.4 sec. what's its acceleration?

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