Physics, 05.05.2020 14:09 wittlemarie
Read the following characteristics of stars and choose the one that is correct. plz help quickly
A. Although all stars have the same brightness, Earth’s atmosphere makes some appear brighter than others.
B. All stars are the same size, but they release different amounts of light
C. If two stars give off the same amount of light, the closer one will appear brighter to us.
D. Smaller stars give off more light than larger ones
Answers: 1
Physics, 20.06.2019 18:04
The cement bag shown in the figure has a mass of 50 kg and the small pulley has a mass of 2 kg. if the cement bag is pulled upwards with an acceleration of 2 m/s^2, find the force f pulling the rope.
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Physics, 22.06.2019 02:00
The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e
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Physics, 22.06.2019 11:20
If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s
Answers: 1
Read the following characteristics of stars and choose the one that is correct. plz help quickly
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