Physics, 02.07.2019 23:40, BlackAfro17
Afather fashions a swing for his children out of a long rope that he fastens to the limb of a tall tree. as one of the children swings from this rope that is 6.10 m long, his tangential speed at the bottom of the swing is 9.70 m/s. (a) what is the centripetal acceleration of the child at the bottom of the swing? m/s2 (b) what provides the centripetal force that keeps the child moving in an arc? 0 the weight of the child o the tension in the rope o the height of the tree o gravitational acceleration
Answers: 2
Physics, 22.06.2019 16:00, Wolfzbayne
The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2
Answers: 1
Physics, 22.06.2019 16:50, fsugg9168
Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?
Answers: 2
Physics, 22.06.2019 20:10, hncriciacheichi
Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.
Answers: 1
Afather fashions a swing for his children out of a long rope that he fastens to the limb of a tall t...
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