Question and answer
Magma that cools and crystallizes on Earth's surface forms A. quartz. B. marble. C. extrusive rocks. D. intrusive rocks.
Magma that cools and crystallizes on Earth's surface forms extrusive rocks.
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Expert answered|Score 1|soumen314|Points 5390|
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Asked 10/4/2018 12:38:28 PM
Updated 156 days ago|6/23/2020 3:49:18 AM
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Confirmed by anthony23 [6/23/2020 3:49:18 AM]
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Questions asked by the same visitor
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.)
Question
Updated 10/3/2018 9:56:30 AM
1 Answer/Comment
A tank with a flat bottom is filled with water to a height of 4 meters. The pressure at any point at the bottom of the tank is 4 *9.8 = 39.24kPa.
Added 10/3/2018 9:56:30 AM
This answer has been confirmed as correct and helpful.
A company is interested in buying a new machine to replace their outdated equipment. However, before committing to the purchase, the company asks the manufacturer to provide data on a certain machine's efficiency. The data suggests that with a supplied energy at a rate of 1,600 W, the machine will do useful work at a rate of 1,540 W. What's the efficiency of this particular machine?
Question
Not Answered
Updated 4 days ago|11/21/2020 11:49:55 PM
1 Answer/Comment
A company is interested in buying a new machine to replace their outdated equipment. However, before committing to the purchase, the company asks the manufacturer to provide data on a certain machine's efficiency. The data suggests that with a supplied energy at a rate of 1,600 W, the machine will do useful work at a rate of 1,540 W. The efficiency of this particular machine is 96.25% Efficiency = Output/ Input = 1540/1600 *100= 96.25%
Added 4 days ago|11/21/2020 11:49:55 PM
This answer has been confirmed as correct and helpful.
Which of the following statements accurately describes the properties of gases?
Question
Updated 96 days ago|8/21/2020 11:37:38 PM
1 Answer/Comment
A change in the pressure of a gas results in a more significant change in volume than it would in a liquid, Accurately describes the properties of gases.
Added 96 days ago|8/21/2020 11:37:38 PM
This answer has been confirmed as correct and helpful.
A force of 350 N causes a body to move with an acceleration of 10 m/s2. What's the mass of the body?
Question
Updated 1 day ago|11/24/2020 4:17:43 PM
1 Answer/Comment
A force of 350 N causes a body to move with an acceleration of 10 m/s2. The mass of the body is 35kg.
Solution: F=ma , m = F/a , m = 350/10 = 35kg.
Added 1 day ago|11/24/2020 4:17:43 PM
This answer has been confirmed as correct and helpful.
A block has a volume of 0.07 m3 and a density of 3,500 kg/m3. What's the force of gravity acting on the block (and weight) in the air?
Question
Updated 10/3/2018 9:54:31 AM
1 Answer/Comment
A block has a volume of 0.07 m3 and a density of 3500 kg/m3. The force of gravity acting on the block in air is 2401 N. density = mass / volume , mass= 3500*0.07 =245 kg , force = mass *acc , force = 245 *9.8 = 2401 N.
Added 10/3/2018 9:54:31 AM
This answer has been confirmed as correct and helpful.
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