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a heat engine operates between a hot reservoir at 950 degree celcius and a cold reservoir at thoroughly room temperature(22 degree C). what is the maximum possible efficiency?
Two metal spheres, each weighing 24-kg are placed 0.05 m apart. Compute the magnitude of the gravitational force the two spheres exert on each other.
A 0.5 kg block of ice is sliding by you on a very slippery floor at 2.5m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.0025 seconds.
A 40 g bullet traveling 500 m/s penetrated 5 cm into a tree trunk. what was the retarding force on the bullet
The entrepreneur who founded the company is convinced that sales will increase next year by 150% and that net operating income will increase by 400%, with no increase in average operating assets. Illustrate what would be the company's ROI?
A photon with an initial wavelength of 1.150×10-11 m Compton scatters from an electron which is initially at rest. What is the energy of the incoming photon
Compute the rms speed of a nitrogen molecule at 12.0°C and At what temperature will the rms speed be half that value
A 2200 kg car is moving at a speed of 30.0 m/s. Determine the stopping distance (in meters) if the brakes supply a force of 3500 newtons
An underwater scuba diver sees the Sun at an apparent angle of 45.0° above the horizon. What is the actual elevation angle of the Sun
A small plastic bead has been charged to -15nC, What is the magnitude of the acceleration of a proton that is 0.90cm from the center of the bead
Starting from one oasis, a camel walks 50 km in a direction 30° south of west and then walks 30 km, What is the distance in km between the two oases
An outfielder makes a throw directly to home plate which is 94.2m away, Determine where the ball lands relative to home plate
An AC voltage of the form ?V = (85 V) sin (330 t) is applied to a series RLC circuit. If R = 42 ?, C = 29 µF, and L = 0.3 H, find the rms current in the circuit
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