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An air bubble at the bottom of a lake has a volume of 15cm3. The lake is 40 m deep and has a temperatureof 4 C at the bottom. The bubble then rises to the surface wherethe temperature is 23 C. What is the volume of the bubble justbefore it reaches the surface? (Assume the surface of thelake is at sea level. Don't neglect atmospheric pressure!)
a carnot engine absorbs 53.2 kj as heat and exhausts 33.0 kj as heat in each cycle. calculate a the engines efficiency
A quantity of ideal gas requires 800 kJ to raise the temperature of the gas by 10.0 K when the gas is maintained at constant volume. What is the adiabatic gas constant of this gas
q1. a lightning bolt transfers 6.0 coulombs of charge from a cloud to the ground in 2.0 10-3 second. what is the
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 1.4 mT. determine the time it takes to complete one revolution
a wooden box weighing 245 n is pushed across the floor by a workman who exerts a horizontal force of 172 n. if the
After the horizontal projectile leaves the gun, what are the accelerations in the x and y directions
The speed of an alpha particle is determined to be 1.55×106 m/s. what is the magnitude of that potential
A car travels a straight road at 120 km/h for 30 min. then at 90 km/h for 10 min. Find the average velocity and average speed for the entire trip
Both surfaces of a double convex lens have radii of 30.8 cm. what is the index of refraction of the lens material
James Stewart, 2002 Motocross/Supercross Rookie of the Year, is leading a race when he runs out of gas near the finish line. Determine the distance the racer travels before coming to a stop
a solid conducting sphere of radius 2.00 cm has a charge of 8x10-6 c. a conducting spherical shell of inner radius 4.00
You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. Explain how much force must you exert to keep the pole motionless in a horizontal position
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