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A gas contained in a cylinder by a layer of styro foam is quickly compressed, the temperature rising several hundred degrees. Has there been a transfer of heat? Has the "heat content" of the gas been increased?
a 75 g frisbee is thrown from a point 0.9 m above the ground with a speed of 12 ms. when it has reached a height of 1.9
given newtons first law of motion what do we reasonably expect an object to do given the following scenarios?an object
A large electromagnetic cool is connected to a 120-Hz as source. The coil has resistance 410 ohms and at the reactance 180 ohms. What must the rms voltage of the source be if the cookie to consume an average electrical power of 800 W?
A parallel-plate capacitor is constructed with plates of area and separation 0.6mm. Find the magnitude of the charge on each plate of this capacitor when the potential difference between the plates is 25 V
A meterstick (L = 1 m) has a mass of m = 0.121 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. What is the tension in the left string?
A cannon of mass 5.17 x 10 3 kg is rigidly bolted to the earth so it can recoil only by a negligible amount. The cannon fires a 74.3-kg shell horizontally with an initial velocity of 542 m/s. Suppose the cannon is then unbolted from the earth, and..
A piece of aluminum (c=0.910 J/gC) of mass 200g at 80C is droppedinto a foam cup filled with 100ml of water at 20C. Once the systemreaches equilibrium, what is the final temperature of the water and aluminum?
The hydrogen alpha has a 658.28 nanometer wavelength. What is the shifted wavelenght of the Hydrogen alpha light emitted by stars in the Andromeda as viewd from Earth
Avoid the weight of the bat, since it is so much less than the force of the bat. Select the direction of the incoming ball as positive direction.
A 7.0 kilogram object undergoes an acceleration of 1.8 m/s2. Find the magnitude of the resultant force acting on it
A thing, rigid, spherical shell with a mass of 4.00 kg and diameter of 0.200 m is filled with helium at 0 degrees celsius and 1 atm pressure. It is after that free from rest on the bottom of a pool of water that is 4.00 m deep.
A fireworks shell is accelerated from rest to a velocity of 65 m/s over a distance of 0.15 m. How long did the acceleration last in seconds
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