At the bottom of the hill, group A measures the speed of a 0.17-kg car at 3.85 m/s while group B measures the speed of the same car at 4.45 m/s. The position when the car is started to move from the top of the hill is 3 m. a). Calculate the potential energy of the car before its speed is measured. b.) Calculate the kinetic energy of the car for group A. c.) Calculate the kinetic energy of the car for group B. [2] d. How much is the energy lost due to friction for the car that is measured by group A and B?
Answers: 3
Physics, 22.06.2019 04:30, leilaford2003
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
Answers: 1
Physics, 22.06.2019 10:20, studyowl9192
Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?
Answers: 1
At the bottom of the hill, group A measures the speed of a 0.17-kg car at 3.85 m/s while group B mea...
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