Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.The potential energy of the crate is mgd
a. True
b. False
Indicate whether the statement is true or false
False
Physics & Space Science
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A bike (shown in a top view in the diagram) travels around a curve with its brakes on, so that it is constantly slowing down. Which of the arrows shown most closely approximates the direction of the bike’s acceleration at the instant it is at the position shown? (Hint: Draw a motion diagram.)
A. A
B. B
C. C
D. D
E. E
F. F
T. T
Physics & Space Science
The higher the frequency of a wave, the
A) shorter the wavelength. B) longer the wavelength. C) neither of these
Physics & Space Science
Which of the following is unique concerning the so-called "Planck's time"?
Physics & Space Science
What is the El Niño condition?
What will be an ideal response?
Physics & Space Science