A hospital patient confined to bed will be less likely to develop bed sores with a

A) firm mattress.
B) soft mattress.
C) water bed.
D) none of these will help.


Answer: C

Physics & Space Science

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A pulse is described by in SI units. What is the velocity of the pulse?

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Graphical Analysis: The figure shows the velocity-versus-time graph for a basketball player traveling up and down the court in a straight-line path. Find the displacement of the player(a) during the first two seconds.(b) between t = 4 s and t = 8 s.

Fill in the blank(s) with the appropriate word(s).

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As water drops fall at a steady rate from a leaking faucet they

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