Physics, 25.05.2021 18:00 hrijaymadathil
6. A 15.5 kg rock falls from a cliff at a height of 138 m to a cliff that is 79 m above the ground. How fest the rock falling when it strikes the lower cliff?
Answers: 1
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Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.
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Physics, 21.06.2019 21:30
According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f
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Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1
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On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?
Answers: 1
6. A 15.5 kg rock falls from a cliff at a height of 138 m to a cliff that is 79 m above the ground....
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