Physics, 03.07.2019 01:20 campbellcameca
You are conducting an experiment inside an elevator that can move in a vertical shaft. a load is hung vertically from the ceiling on a string. the tension in the string is measured to be exactly equal to the force due to gravity on the load. no other forces are acting on the load. which of the following statements about the elevator are correct? check all that apply. check all that apply. the elevator is an inertial frame of reference. the elevator is not an inertial frame of reference. the elevator may be at rest. the elevator may be moving at a constant velocity upward. the elevator may be moving at a constant velocity downward. the elevator may be accelerating. the elevator must be accelerating.
Answers: 3
Physics, 21.06.2019 22:40
The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively
Answers: 2
Physics, 22.06.2019 05:00
Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?
Answers: 1
Physics, 22.06.2019 11:30
Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25ห e? this would have obliterated the city.
Answers: 1
You are conducting an experiment inside an elevator that can move in a vertical shaft. a load is hun...
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