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A bicycle pump contains air at STP. As the tire is pumped up, the volume of air decreases by 28% with each stroke. Determine the new pressure of the air in the chamber after the first stroke, assuming no temperature change? Answer in units of atm.
A man walking on a tightrope carries a long a pole which has heavy items attached to the two ends. what difference would it make to his balance
you are considering buying a hybrid car but are skeptical of the manufacturers claims. one model uses a ring-shaped
Determine the resulting specific gravity when the three liquids in the containers A, B and C are mixed together.
a block of mass m is attached to two springs with spring constants k1 and k2 ina parallel b series
A high-speed flywheel in a motor is spinning at 450rpm when a power failure suddenly occurs. The flywheel has mass 40.0kg and diameter 80.0cm. At what rate is the flywheel spinning when the power comes back on
A player bounces a 0.47 kilogram soccer ball off her head, changing the velocity of the ball from vi = (8.5m/s)x + (-2.8m/s )y to vf = (6.0m/s )x + (3.6m/s )y. Find the magnitude of the impulse delivered to the ball
A muon (an elementary particle) enters a region with a speed of 4.90 106 m/s and then is slowed at the rate of1.20 1014 m/s2
A current of 10^-14 A is produced in a free-air chamber operating under saturation conditions. The sensitive volume, in which electronic equilibrium exists, contains 0.22g of air. What is the exposure rate .
Water at the top of Niagara Falls has a temperature of 11.0°C. estimate the increase in temperature of the water at the bottom of the falls
A soccer ball is kicked with the initial speed of 10.8 m/s . After 0.720 s it is at its highest point. What was its initial direction of motion
A computer draws an rms current of 2.70 Aat an rms voltage of 120 V. The average power consumption is279 W. What is the phase difference between the voltage andcurrent?
A spring that has a force constant of 1000 N/m is mounted vertically on the ground. By what distance does the spring compress
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