Answers: 1
Physics, 22.06.2019 01:20
An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0ยฐ above the horizontal. it then moves 137 ft at an angle of 48.0ยฐ below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
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Physics, 22.06.2019 12:10
Point charges q1 = 51 ยตc and q2 = โ27 ยตc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 ยตc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)
Answers: 3
Physics, 22.06.2019 20:30
Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.
Answers: 1
A 7kg bowling ball moves at a speed of 3.0 m/s
a) How much kinetic energy does the bowling ball hav...
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