A tiny spring, with a spring constant of 1.30 N/m, will be stretched to what displacement by a 0.00500-N force?
a. 3.85 mm
b. 7.69 mm
c. 11.5 mm
d. 6.50 mm
e. 3.25 mm
a
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Indicate whether the statement is true or false
A 150-kg crate is placed on an adjustable inclined plane. As one end of the incline is raised, the crate begins to move downward. If the crate slides down the plane with an acceleration of 0.20 m/s2 when the incline angle is 18°, what is the coefficient of kinetic friction between ramp and crate? (g = 9.8 m/s2)
a. 0.40 b. 0.50 c. 0.30 d. 0.20 e. 2.8
Of vectors with lengths 5 m, 3 m, and 4 m, which has the greatest magnitude x component?
a. the one with length 5 m b. the one with length 3 m c. the one with length 4 m d. It could be any of the three.
Stars twinkle when seen from Earth. When seen by an astronaut on the Moon, stars
A) twinkle more. B) twinkle less. C) don't twinkle.