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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Updated 156 days ago|6/23/2020 3:49:18 AM
Confirmed by anthony23 [6/23/2020 3:49:18 AM]
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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
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.
A company is interested in buying a new machine to replace their outdated equipment.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
Updated 4 days ago|11/21/2020 11:49:55 PM
A company is interested in buying a new machine to replace their outdated equipment.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
Which of the following statements accurately describes the properties of gases?
Question
Updated 96 days ago|8/21/2020 11:37:38 PM
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
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
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
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
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.
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