Physics, 07.12.2019 03:31 Xavierayala2003
What is an effect of gravity on objects on the surface of earth? check all that apply.
a. objects “fall” toward the center of earth.
b. objects are pulled by earth but do not pull on earth.
c. objects accelerate at a rate of 9.8 m/s each second.
d. objects travel at a rate of 9.8 m/s toward the center of earth.
e. objects are pulled by earth more strongly than they pull on earth.
Answers: 1
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
Physics, 22.06.2019 13:30
6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.
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Physics, 22.06.2019 14:30
Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?
Answers: 1
What is an effect of gravity on objects on the surface of earth? check all that apply.
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