If the acceleration vector of an object is directed anti-parallel to the velocity vector, then

A) the object is speeding up.
B) the object is slowing down.
C) the object is turning.
D) the object is at rest.
E) this situation would not be physically possible.


B

Physics & Space Science

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Bottles of perfume sometimes have thick glass (n = 1.5) walls which give the impression the volume is larger than it really is. Assume a cylindrical bottle with an inner radius of 1.0 cm and an outer radius of 2.0 cm. What percentage of the apparent volume is the real volume?

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When an inflated balloon is released with its end unsealed and takes off across the room, how is momentum conserved?

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The approximate range of human hearing is

A) 10 hertz to 10,000 hertz. B) 20 hertz to 20,000 hertz. C) 40 hertz to 40,000 hertz. D) none of the above

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