Physics, 23.07.2019 00:30, joesalem215
Aconducting bar rests on two parallel horizontal rails 50 cm apart forming a square area. the resistance of the bar and the rails is assumed to be constant and equal to 0.05 ω. a uniform magnetic field 0.5 t is perpendicular to the plane of the rails. the value of the field is uniformly reduced to zero in a time of 0.1 s. what is the maximum value of the force acting on the bar during that time?
Answers: 2
Physics, 22.06.2019 06:30, marciamwilliamp31fz6
The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?
Answers: 2
Physics, 22.06.2019 09:40, wi8wuwj283jendjdudjd
When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great. d) about 10 times as great.
Answers: 1
Aconducting bar rests on two parallel horizontal rails 50 cm apart forming a square area. the resist...
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