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An ideal monatomic gas cools from 550 K to 400 K at constant volume as 900J of energy is removed from it. How many moles of gas are in the sample? The ideal gas constant is R = 8.314 J/mol · K.
a pendulum consists of a 1.7-kg bob attached to a light 2.3-m-long string. while hanging at rest with the string
The block of mass mB hangs freely. The coefficient of static friction between mA and the surface is 0.40. The blocks are at rest. where m1 = mA and m2 = mB. Draw the free body diagram of the blocks.
A textbook of mass 1.90kg rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.150m, What is the tension in the part of the cord attached to the textbook
Calculate the minimum angle above the horizontal at which Hiawatha must aim in order to outrun the arrow.
The two plates of a capacitor hold +8500 mC on the top plate and the same but opposite charge on the bottom plate when the potential difference is 220 Volt. Determine what is the capacitance in farads
An electron, starting from rest, accelerates through a potential difference of 779 V. What is the final de Broglie wavelength of the electron
500 ml of a liquid with a coefficient of volume expansion of 205x10-6oc fills to the brim a container that has a
A 94.0-μF capacitor is connected to a generator operating at a low frequency. The rms voltage of the generator is 4.10 V and is constant. A fuse in series with the capacitor has negligible resistance and will burn out when the rms current reaches ..
A comet has a very elliptical orbit with a period of 116.1 y. what is its greatest distance from the Sun
A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration of 1.7 rad/s2. What is the magnitude of the discus's total acceleration?
A capacitor is constructed with plates of area A and separation s. The area between the plates is ?lled with a weakly ionized gas — a very poor conductive medium with resistivity = 10^8 ohms * cm. The density of the gas is so low that it has no e?e..
A 52 ohm resistor is connected across a battery, and a 24 mA current flows. Determine what is the internal resistance
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