. 30
⢠A l-m pry bar is held horizontally and used to open a crate. The tip of the
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Physics, 06.03.2020 07:19, tlperez1230
. 30
⢠A l-m pry bar is held horizontally and used to open a crate. The tip of the
bar, which serves as the fulcrum, is pushed in a distance of 2 cm between
the crate lid and the crate. If a 20-N force is applied perpendicularly to the
end of the bar, what force is applied on the crate lid?
(A) IN
(B) 100 N
(C) 10 N
(D) 1,000 N
(E) 10,000 N
Answers: 2
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Lin yao looks at the back of a spoon. how should she describe her reflection? upside down and smaller upside down and larger right-side up and smaller right-side up and larger
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Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
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Suppose that a cylindrical tank 6 meters high with a radius of 2 meters is filled to the rim with water. the tank is buried so that the top of the tank is 1 meter below ground level. the space above the tank is not filled with water. calculate how much work needs to be done by a pump to pump the water out of the tank up to ground level. (the water weighs 9,800 newtons per cubic meter.)
Answers: 2
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