A 6.1-g bullet has a velocity of 475 m/s when it penetrates a wooden door to a depth of 3.5 cm. Assuming the frictional force that stops the bullet is constant, how long does it take from the time the bullet hits the door till it comes to a stop?
a. 1.5E–4 s
b. 7.4E–5 s
c. 4.5E–2 s
d. 3.7E–3 s
a
Physics & Space Science
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Reaction forces are given in terms of load variable P for the truss below. The force in member FD is:
(A) 1.47P
(B) 2.27P
(C) 22.27P
(D) 24.27P
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The Moon's albedo is ______________
Fill in the blank(s) with correct word
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The orbital period of the Moon with respect to a star (other than the Sun) is called a(n) ______________ month
Fill in the blank(s) with correct word
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Since all the chemicals that deplete ozone occur naturally in the ozone layer anyway, there is no need to worry about releasing more of them into the air
What will be an ideal response?
Physics & Space Science