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A 2.38 mol sample of an ideal gas expands reversibly and isothermally at 278 K until its volume is doubled. What is the increase in entropy of the gas?
Blue light of frequency 6.0 1014 Hz falls on the surface of potassium, which has a work function of 2.26 eV. Find the maximum kinetic energy of emitted electrons
A 3kg model rocket initially at rest experiences an average force of 3950N over a distance of 200 cm. How much has the rockets kinetic energy increased
A small 4.50 brick is released from rest 3.00 above a horizontal seesaw on a fulcrum at its center, Find the angular momentum of this brick about a horizontal axis through the fulcrum
The maximum strength of the earth's magnetic field is about 6.9 x 10-5 T near the south magnetic pole. What is the minimum number of turns (area per turn = 0.021 m2) that the coil must have to produce an rms voltage of 170 V
A Girl is pushing on a 45 kg dresser with 300 N of force. The dresser has a coeficient of statice friction of 0.83 and a coeficient of kinetic friction of 0.55. How much is the force of friction on the dresser
A cube of ice is taken from the freezer at -7.9°C and placed in a97g aluminum calorimeter filled with322g of water at room temperature of 20°C. What was the mass of the ice cube
A 2.36 kg mass with an initial velocity of v1 = aˆi, where a = 5.75 m/s collides with, Find the final speed of the composite mass
A heat pump has a coefficient of performance of 3.75 and operates with a power consumption of 6.89 103 W. How much energy does it extract from the outside air
A particle moves with constant acceleration a. The expression v1+at represents the particle's velocity at what instant in time.
Two forces are applied to a 5.0 kg crate; one is 6.0 N to the north, compute The magnitude of the acceleration of the crate
A toy train rolls around a horizontal 1.5-m-diameter track. The coefficient of rolling friction is 0.13. What is the magnitude of the trains angular acceleration
If a projectile is launched vertically from the Earth with a speed equal to the escape speed, how far from the Earth's center is it when its speed is 1/6 of the escape speed
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