A vertical cylindrical cylinder, closed at the bottom end, contains 0.0100 moles of gas
It is fitted at the top with a piston, which can move freely. The mass of the piston is 14.0 kg and the initial height of the piston above the bottom of the cylinder is 25 cm. What is the temperature of the gas?
A) 290 K
B) 413 K
C) 3620 K
D) 405 K
E) 500 K
B
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Estimation: A reasonable estimate for the mass of a typical new-born baby is
A. 1 kg. B. 3 kg. C. 10 kg. D. 20 kg.
A conducting rod slides at 3.0 m/s on metal rails separated by 2.0 m. The 0.66 m T magnetic field is into the paper. If the resistance is 220 m
what is the current in the circuit?
A. 18 mA
B. 9.0 mA
C. 87
A
D. 3.0
A
E. 4.5 mA
To get the same exposure on the film, when the aperture diameter of a camera lens is doubled, what change should be made in the shutter speed?
A. it should be doubled B. it should be halved C. it should be quadrupled D. it should be quartered E. it should be reduced by a factor of 1.414
If a fire truck's siren is rising in pitch, it must be approaching us
Indicate whether the statement is true or false