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Bob heads out into a lake at an angle of 30? with respect to the shore. If his boat is capable of a speed of 1.3 m/s, how far from land will he be in 5 min and 37 s?
A 1.0 kg block of aluminum isheated at atmospheric pressure so that its temperature increasesfrom 22°C to 38°C. Find the change in internal energy of the aluminum
A box slides down a 22° ramp with an acceleration of .92m/s2. Determine out the coefficient of kinetic friction between the box and the ramp.
A proton is moving paralell to a uniform electric field. The electric field accelerates the proton and increases its linearmomentum to 5.0 x 10-23 kg x m/s in time of 6.3 x10-6s. What is the magnitude of the electric field?
A 120 gram ball on a 75 centimeter long string is swung in a vertical circle above a point 220 above the floor. Evaluate the tension in the string an instant before it broke
Two cars approach an ice-covered intersection. One car, of mass 1.27 103 kg, is initially traveling north at 12.1 m/s, Find the velocity of the center of mass of the two-car system just after the collision
At the end of a race a runner decelerates from a velocity of 8.00 m/s at a rate of 0.300 m/s2. What is her final velocity
Find the speed of sound in a thin rod of cast iron, which has a sheer modulus of 4.5 1010 Pa and a density of 7.30 103 kg/m3
On Planet X, the pressure at a depth of 2.00 m below thesurface of a liquid nitrogen lake, the pressure is5.00*10^5N/m^2. What is the atmospheric pressure at the surface of the lake
A radiator has an emissivity of 0.95 and its exposed area is 1.23m^2. The temperature of the radiator is 100deg C, What is the heat flow rate from the radiator
A Carnot engine extracts 529 J of heat from a high-temperature reservoir during each cycle, What is the efficiency of the engine
An artillery shell of mass 10.00 kg, lying at rest on the ground, accidentally detonates, exploding into three pieces of shrapnel. What is the speed of the third piece of shrapnel
A block with mass m = 4.6 kg is attached to two springs with spring constants kleft = 37 N/m and kright = 51 N/m. What is the effective spring constant of the two springs
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