Slanting Surfaces Without Friction: A 2.8-kg tool can move on a perfectly smooth ramp that slants at 42° above the horizontal. What are the magnitude and direction of the acceleration of this tool if it is sliding (a) up the ram, (b) down the ramp?
What will be an ideal response?
(a) 6.6 m/s2 down the ramp (b) 6.6 m/s2 down the ramp
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If the layering of the close-packed planes in a FCC metal is ABCABCBACBA, this is a _____________.
Fill in the blank(s) with the appropriate word(s).
A spring with a force constant of 2.00 N/m is attached to a mass of 75.0 g. The system has a small amount of damping
If the amplitude of the oscillations decreases from 10.0 mm to 5.00 mm in 15.0 s, what is the magnitude of the damping constant? A) 0.00693 Ns/m B) 0.0462 Ns/m C) 0.00762 Ns/m D) 0.0100 Ns/m E) 0.00857 Ns/m
Why were telescopes with very large, thin mirrors not built 50 years ago?
What will be an ideal response?
Consider two spaceships, each traveling at 0.50c in a straight line. Ship A is moving directly away from the Sun and ship B is approaching the Sun. The science officers on each ship measure the velocity of light coming from the Sun
What do they measure for this velocity? A) Ship A measures it as less than c, and ship B measures it as greater than c. B) Ship B measures it as less than c, and ship A measures it as greater than c. C) On both ships it is measured to be less than c. D) On both ships it is measured to be exactly c.