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The car drives straight off the edge of a cliff that is 57 m high. The investigator at the scene of the accident notes that the point of impact is 130 m from the base of the cliff. How fast was the car traveling when it went over the cliff?
A 0.200-kg block along a horizontal track has a speed of 1.80m/s at once before colliding with a light spring of force constant 44.2 N/m located at the end of the track.
Three point charges are on the x axis: q1 is at the origin, q2 is at x = 4.91 m, and q3 is at x = 6.21 m. Find the electrostatic potential energy of this system of charges if q1 = q2 = q3 = 1.55 C.
What is the magnitude of the apparent weight of a 68kg astronaut 2600km from the center of the Earth's Moon in a space vehicle accelerating toward the Moon at 2.1m/s2
A string under a tension of 47.00N is used to whirl a rock in a horizontal circle of radius 2.60 m at a speed of 21.0 m/s. The string is pulled in and the speed of the rock increases.
Sound enters the ear, travels through the auditory canal, and reaches the eardrum. What is the fundamental frequency of the canal
A golfer hits a shot to a green that is elevated 3.00 m above the point where the ball is struck. find the speed of the ball just before it lands
If his arms are capable of exerting a force of 1400 on the vine, what is the maximum speed he can tolerate at the lowest point of his swing? His mass is 82, and the vine is 6.00 long.
The 210 A current through a spark plug moves 0.270 mC of charge. How long does the spark last
An 8.0 m, 100 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.40, what is the minimum angle that ladder can make with the floor before it slips.
A rocket traveling 1850 m/s away from the Earth at an altitude of 6800 km fires its rockets, at what rate must the gases be ejected
A plane drops a package of food to stranded caribou on an ice flow in the Artic circle. How far short of the target should it drop the package
What is the acceleration of a ball traveling horizontally with an initial velocity of 20 meters/second and, 2.0 seconds later, a velocity of 30 meters/second? A. 1.6 m/s^2 B. 3.0 m/s^2 C. 3.4 m/s^2 D. 5.0 m/s^2
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