Physics, 06.09.2020 14:01 Laydax1587
- A window clearner working on the Infinity Tower accidentally drops her mobile
phone. The phone falls vertically towards the ground with an acceleration of 9.80
m/s.
a) Determine the speed of the phone after 3.0s.
b) Calculate how fast the phone is moving after it has fallen 30.0m.
c) Calculate the average velocity of the phone during the fall of 30.0m.
Answers: 2
Physics, 22.06.2019 21:10, bri9263
Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.
Answers: 2
Physics, 23.06.2019 00:10, looloo273
An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b. what is the wavelength of the wave? c. what is the amplitude of the magnetic field? d. what is the intensity of the wave?
Answers: 3
Physics, 23.06.2019 01:10, jacquilynfoster7
Calculate 9 ∙ 10-5 divided by 3 ∙ 10-9. (box after the "10" in answer is for the
Answers: 1
- A window clearner working on the Infinity Tower accidentally drops her mobile
phone. The phone fa...
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