Arock is thrown from the upper edge of a tall cliff at some angle above the horizontal. it reaches its highest point and starts falling down. which of the following statements about the rock's motion are true just before it hits the ground? a. its speed is the same as it was just as it was launchedb. its horizontal velocity component is the same as it was just as it was launchedc. its velocity is vertical. d. its vertical velocity component is the same as it was just as it was launched. e. its horizontal velocity component is zero.
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Physics, 22.06.2019 02:00
The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s
Answers: 3
Physics, 22.06.2019 03:30
Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.
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Physics, 22.06.2019 04:20
Astone is thrown into a pond. what happens to the amplitude of the resulting waves as they get farther from the point where the stone hit the water? explain.
Answers: 3
Physics, 22.06.2019 14:00
Ascientific blank must be testable and capable of being proven false?
Answers: 1
Arock is thrown from the upper edge of a tall cliff at some angle above the horizontal. it reaches i...
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