Physics, 02.03.2020 17:14 user1234536
A worker pushed a 18.0 kg block 12.0 m along a level floor at constant speed with a force directed 28.0° below the horizontal. If the coefficient of kinetic friction between block and floor was 0.450, what were (a) the work done by the worker's force and (b) the increase in thermal energy of the block-floor system?
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Physics, 22.06.2019 07:30
Which of the following is an example of motion in two dimensions?
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Physics, 22.06.2019 10:00
Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?
Answers: 1
Physics, 22.06.2019 12:00
Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?
Answers: 3
Physics, 22.06.2019 14:20
What are the starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus
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A worker pushed a 18.0 kg block 12.0 m along a level floor at constant speed with a force directed 2...
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