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Consider Joule's experiment described in the insight below. Assume the mass m = 2.5 kg and the fluid is water with a volume of 1.19 L. What is the increase in the temperature of the water when the mass moves vertically a distance z =1.10 m?
An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 3.7 cubic meters of sea water
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. What is the average power generated by the lifting force
A crate of 30.2- tools rests on a horizontal floor. You exert a regularly increasing horizontal push on it and observe that the crate just begins to move while your force exceeds 319. After that you must reduce your push to 227 to keep it moving at a..
Speedboat A negotiates a curve whose radius is 124m. Speedboat B negotiates a curve whose radius is 230m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
a ball is tossed into the air at a speed of 64.0 m/s at an unknown angle. If the ball is observed to rise to a maximum height of 7.80 m, elucidate at what angle was the ball thrown relative to the ground?
A 3.8-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,078oC is placed on top of a 2.4-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC
The atomic number of lead is 82. The alpha particle is a helium nucleus, with atomic number 2.
What is the period of this pendulum in the small angle approximation.
Examine whether it is reasonable to ignore the effects of gravity for each particle. Evaluate the paths travelled by electron and proton and explain the differences.
When a 4.0 µF capacitor is connected to a generator whose rms output is 32 V, What is the frequency of the source
n = 3.59 mol of Hydrogen gas is initially at T = 386 K temperature and pi = 1.78×105 Pa pressure. How much work did the external force perform
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 12-g nail
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