what is 30 kg times 20 m/s^2?
Force=ma=30*20 m/s^2=600N.
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A 7.5 kg block is placed on a table. If its bottom surface area is 0.6 m , how much pressure does the block exert on the tabletop?
Weegy: A 7.5 kg block is placed on a table. If its bottom surface area is 0.6 m2, 122.5 Pa does the block exert on the tabletop. P = F/A where F = mg F = 7.5 ( 9.81) = 73.6 N P = 73.6 N / 0.6 m^2 = 122.5 Pa User: A 7.5 kg block is placed on a table. If its bottom surface area is 0.6 m^2, how much pressure does the block exert on the tabletop? Weegy: A 7.5 kg block is placed on a table. If its bottom surface area is 0.6 m2, 122.5 Pa does the block exert on the tabletop. Solution: P = F / A where F = mg P = mg / A P = (7.5 x 9.8) / 0.6 P = 122.5 Pa (More)
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Updated 165 days ago|11/6/2023 6:48:54 PM
A 63 kg object needs to be lifted 7 meters in 5 seconds. Approximately how much horsepower is required to achieve this task?
Weegy: A 63 kg object needs to be lifted 7 meters in a matter of 5 seconds. [ Approximately 1.16 hp is required to achieve this task. Solution: power = work done /time taken = mgh/time = 63*9.8*7/5 = 4321.8/ 5 = 864.36; 1 HP = 746 watts; horsepower = 864.36/746 = 1.16hp. ] (More)
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Updated 165 days ago|11/6/2023 6:42:27 PM
What is the difference between the internal combustion engine and the diesel engine?
Weegy: The main difference between the internal combustion engine and the diesel engine is that the diesel engine: Has no ignition system. (More)
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Updated 165 days ago|11/6/2023 6:42:49 PM
The main purpose of the turbine in the turbojet engine is to A. reduce the temperature of the exhaust gas. B. compress the air. C. drive the compressor. D. increase the velocity of the exhaust gases.
Weegy: The main purpose of the turbine in the turbojet engine is to drive the compressor. (More)
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Updated 2/27/2023 12:29:14 PM
If a substance forms crystals when it solidifies, its _______ points are the same. A. melting and freezing B. melting and condensation C. evaporation and freezing D. evaporation and condensation
Weegy: If a substance forms crystals when it solidifies, its melting and freezing points are the same. (More)
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Updated 2/27/2023 12:27:22 PM
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