Physics, 29.11.2019 04:31 nicpinela1234
Achild and sled with a combined mass of 49.0 kg slide down a frictionless hill that is 7.50 m high at an angle of 26 ◦ from horizontal. the acceleration of gravity is 9.81 m/s 2 . if the sled starts from rest, what is its speed at the bottom of the hill?
Answers: 3
Physics, 22.06.2019 00:50
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?
Answers: 1
Physics, 22.06.2019 13:10
The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.
Answers: 3
Physics, 22.06.2019 22:00
What would people living along the coast in south florida do if there was a hurricane warning? move to locations away from the water flock along coasts to watch the natural phenomenon buy instruments to predict the exact location of the hurricane measure water levels to know the exact time of the hurricane
Answers: 3
Achild and sled with a combined mass of 49.0 kg slide down a frictionless hill that is 7.50 m high a...
Mathematics, 13.04.2020 20:18
Mathematics, 13.04.2020 20:18
Mathematics, 13.04.2020 20:18
Mathematics, 13.04.2020 20:18
Health, 13.04.2020 20:18
History, 13.04.2020 20:18
Mathematics, 13.04.2020 20:18
Mathematics, 13.04.2020 20:18