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In a practical machine, the power output is _______ the power input. A. smaller than B. equal to C. multiplied by D. larger than
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Asked 2/25/2019 9:54:01 AM
Updated 193 days ago|4/21/2020 12:57:35 AM
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User: In a practical machine, the power output is _______ the power input. A. smaller than B. equal to C. multiplied by D. larger than

Weegy: In a practical machine, the power output is SMALLER THAN the power input.
|Score 1|stickman|Points 6223|

User: If an object has a mass of 20 kg, what is the force of gravity acting on it on earth? A. 1.96 kg B. 2.04 kg C. 196 N D. 32.67 N

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Asked 2/25/2019 9:54:01 AM
Updated 193 days ago|4/21/2020 12:57:35 AM
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If an object has a mass of 20 kg, The force of gravity acting on earth is 196N.
force =mass *acc , force = 20 *9.8 = 196N
Added 193 days ago|4/21/2020 12:57:35 AM
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What happened to Eastern European nations occupied by the Soviet Union after World War II? A. The Eastern European nations were granted complete independence. B. Most Eastern European nations became part of the Soviet Union. C. The Soviet Union greatly influenced the occupied nations. D. Most Eastern European nations joined NATO
Weegy: What happened to Eastern European nations occupied by the Soviet Union after World War II was: Most Eastern European nations became part of the Soviet Union. User: What was the significance of the Battle of Stalingrad during World War II? A. It was the first large-scale Soviet victory. B. It allowed American forces to attack western Germany. C. It was a major victory for the German forces. D. It knocked the Soviet Union out of the war. (More)
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Updated 299 days ago|1/5/2020 10:11:00 AM
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It was the first large-scale Soviet victory, was the significance of the Battle of Stalingrad during World War II.
Added 299 days ago|1/5/2020 10:11:00 AM
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How did French and British leaders react to Hitler's annexation of the Sudetenland? A. They offered Hitler land in Poland to give up the land he took. B. They demanded that Hitler give up the land or they would go to war. C. They allowed these moves as long as Hitler promised to go no further. D. They declared war on Germany.
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Updated 39 days ago|9/22/2020 3:56:05 AM
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They allowed these moves as long as Hitler promised to go no further -is how French and British leaders reacted to Hitler's annexation of the Sudetenland.
Added 39 days ago|9/22/2020 3:56:05 AM
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The orbits of planets being elliptical was one the planetary laws developed by A. Ptolemy. B. Kepler. C. Brahe. D. Copernicus.
Weegy: The orbits of planets being elliptical was one the planetary laws developed by Kepler. User: An object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done? A. 764.4 J B. 47.75 J C. 4,586.4 J D. 468 J (More)
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Updated 2/25/2019 10:57:59 AM
1 Answer/Comment
An object with a mass of 78 kilograms is lifted through a height of 6 meters. The work done is 4,586.4 J.

Work done = mgh
Where m = mass in kg, g = gravity in m/s², h = height in m. W is in J

m = 78 kg, g = 9.8m/s², h = 6m
W = 78 * 9.8 * 6 = 4586.4 J
Added 2/25/2019 10:57:59 AM
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If a small-diameter open glass tube is partially immersed in a vessel containing mercury, the surface of the mercury inside the tube will be A. lower than the mercury in the vessel, and shaped like the outside of an umbrella. B. higher than the mercury in the vessel, and shaped like the inside of a bowl. C. lower than the mercury in the vessel, and shaped like the inside of a bowl. D. higher than the mercury in the vessel, and shaped like the outside of an umbrella.
Weegy: If a small-diameter open glass tube is partially immersed in a vessel containing mercury, the surface of the mercury inside the tube will be : lower than the mercury in the vessel, and shaped like the outside of an umbrella. User: A tank with a flat bottom is filled with water to a height of 4 meters. What is the pressure at any point at the bottom of the tank? (You can ignore atmospheric pressure when calculating your answer.) A. 4.0 kPa B. 9.8 kPa C. 18.9 kPa D. 39.2 kPa (More)
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Updated 12 days ago|10/18/2020 10:10:44 PM
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A tank with a flat bottom is filled with water to a height of 4 meters. 39.2 KPa is the pressure at any point at the bottom of the tank.

Solution: P=pgh P is pressure, g is the gravitational constant, h is the height. 9.8 x 4 = 39.2 KPa.
Added 12 days ago|10/18/2020 10:10:44 PM
This answer has been confirmed as correct and helpful.
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