Physics, 17.08.2019 17:10 smallblueberry
Aball is thrown straight up. what can be said about the sign of work done by the force exerted by gravity while the ball moves up and then down?
a) positive as the ball travels up, and positive as the ball travels down
b) zero as the ball travels up, and zero as the ball travels down
c) negative as the ball travels up, and negative as the ball travels down
d) positive as the ball travels up, and negative as the ball travels down
e) negative 'as the ball travels up, and positive as the ball travels down
Answers: 1
Physics, 21.06.2019 16:20
Describe how the fermi level changes with donor level, temperature and contact with p and n type semiconductors
Answers: 1
Physics, 21.06.2019 21:30
Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)
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Physics, 22.06.2019 11:00
If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c
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Physics, 22.06.2019 14:30
Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2
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Aball is thrown straight up. what can be said about the sign of work done by the force exerted by gr...
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