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An engine running at 62.5% efficiency transfers 154 J of heat to the cold reservoir through each cycle. How much heat does the engine receive from the hot reservoir each cycle?
A motorist drives south at 27.0 m/s for 3.90 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 40.0 m/s for 1.00 min. For this 6.40 min trip, find the values.
a well-insulated electric water heater delivers 3.10106cal to its tank of water in 35.0 minutes. find the resistance of
A heat engine extracts 50.0kJ of heat from the hot reservoir each cycle and exhausts 35.0kJ of heat. What is the thermal efficiency
The flywheel of a motor has a mass of 300kg and a moment of inertia of 580kg?m2. The motor develops a constant torque of 2000N?m, What is the angular acceleration of the flywheel
The intensity of radiation from a distant source like the Sunvaries inversely with the square of the distance from thesource. At the top of Earth's atmosphere the solar intensity(power per unit area) is 1.35 kW/m2.
A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 35.6°. The index of refraction of quartz is 1.455 at 660 nm (red light), and its index of refraction is 1.468 at 410 nm (violet light). Fin..
If the ball was hit when it was 1.2m above the ground, what horizontal distance does it travel before it lands on the building
A man is trying to lift 60.0 kg off the floor by bending at thewaist. Assume that the man’s upper body weighs 455 Nand the upper body’s centre of gravity is 38 cm from thesacrum (tailbone).
A solenoid 95.0 centimeter long has a cross-sectional area of 12.0 cm2. There are 800 turns of wire carrying a current of 6.10 Amp. Evaluate the magnetic field inside the solenoid
Compare the distance he wanted to cover in the real world with the "theoretical" distance that could be covered if there was no air resistance - If the engine was close to 100% efficient how much petrol would be used to overcome air resistance duri..
An electron (q = -1.6E-19 C, m = 9.1E-31 kg) has an initialvelocity (t=0) of v = 1.6E5 m/s j + 2.4E5 m/s k and is moving in a magneticfield B = 0.5 T k. What is the radius of motion of the electron
The head of a 3.2 kilogram hammer, moving at 5.2 m/s, strikes a nail and drives it into hardwood. Compute the change in kinetic energy of the hammer
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