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A diver 50m deep in 10C fresh water exhales a 1.2-cm-diameter bubble.
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20C? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
Express your answer to two important figures and include the appropriate units.
A girl jumps on bike and exerts torque of 25.0 N-m perpendicular to the pedal. Moment of inertia of bike wheel is I = 0.045kg-m^2. What is angular velocity of bike wheel at end of this time
An archer pulls the bowstring back for a distance of 0.470 m before releasing the arrow. What is the elastic potential energy of the drawn bow
Most of the asteroids orbit the Sun in a belt between Mars and Jupiter. how long does the average asteroid take to orbit the Sun
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sam whose mass is 66 kg takes off across level snow on his jet-powered skis. the skis have a thrust of 270 n and a
question1a 14 g rifle bullet travelling 200 ms buries itself in a 3.5 kg pendulum hanging on a 3.3 m extended string
A gas cylinder holds 0.22 mol of O2 at 187°C and a pressure of 3.6 atm. The gas expands adiabatically until the pressure is halved. What is the final temperature? What is the final volume?
two spaceships approach earth with equal speeds as measured by an observer on earth but from opposite directions. a
a -3.01 nc charge lies 21.7 cm to the right of a 1.69 nc charge on the x-axis. what is the magnitude of the force on
Electrons are accelerated through a voltage difference of 145 kV inside a high voltage accelerator tube. What is the final kinetic energy of the electrons
What is the energy in joules of an x-ray photon with wavelength 1.95 10-9 m, Convert the energy to electron volts
A gardener pushes a 20kg lawnmower whose handle is tilted up 37degrees above horizontal. The lawnmower's coefficient of rolling friction is 0.20. How much power does the gardener have to supply to push the lawnmower at a constant speed of 1.4m/s ? As..
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