Physics, 26.06.2020 15:01 tjjjjjjjjjjjjjjjjjjj
Part 3: Problem Set 1. An object is pulled by a rope and dragged to the right 12 meters across a rough surface. The tension in the rope is 105 N and the rope makes an angle of 35 degrees with the horizontal. The rough surface exerts a constant frictional force of 50 N as the object is dragged. 105 N 12 meters a) Find the total amount of work done on the object. Consider the following forces: tension, friction, gravity and normal. b) Use the work energy theorem to find the block's change in kinetic energy.
Answers: 1
Physics, 22.06.2019 12:00
Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.
Answers: 1
Physics, 22.06.2019 15:20
Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.
Answers: 3
Physics, 23.06.2019 00:20
Abeam of electrons moves at right angles to a magnetic field of 4.5 × 10-2 tesla. if the electrons have a velocity of 6.5 × 106 meters/second, what is the force acting on the electrons? the value of q = -1.6 × 10-19 coulombs.
Answers: 2
Part 3: Problem Set 1. An object is pulled by a rope and dragged to the right 12 meters across a rou...
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