A rope with a total mass of 25.0 kg is tied to a tree on one side of a 125 meter wide ravine, and you're pulling on the other end of the rope with a force of 415 N
If you pluck the rope, how long will it take the pulse to travel across the ravine to the tree?
2.74 seconds
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The speed of a comet in its orbit around the Sun is ______________ when its distance from the Sun is least (perihelion)
a. zero b. reversed c. greatest d. least
If several balls are thrown straight up with different initial speeds, the quantity that will have the same value along their paths is their
A) initial momentum. B) maximum height. C) time of travel. D) acceleration. E) none of the above
A far-sighted student has a near point of 1.0 m. Calculate the focal length (in cm) of the glasses needed so the near point will be normal (25 cm)
a. 72 b. 25 c. 33 d. 100 e. ?33
Small glaciers that form along mountains in hollow depressions are called
a. cirque glaciers. b. mountain glaciers. c. caldera glaciers. d. moraines.