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A Carnot heat engine has a thermal efficiency of 0.510, and the temperature of its hot reservoir is 700 K. If 3900 J of heat is rejected to the cold reservoir in one cycle, what is the work output of the engine during one cycle?
Starting from rest, a 12-cm-diameter compact disk takes 2.5s to reach its operating angular velocity of 1500rpm. How much torque is applied to the disk
A 105-kg water skier floating in a lake is pulled from rest to a speed of 14 m/s in a distance of 25m. What is the net force exerted on the skier, assuming his acceleration is steady.
An oxygen bubble at the bottom of a lake 20. m deep has a volume of 1.20 cm^3, calculate the initial pressure inside the bubble at the bottom of the lake
Some space invaders build a giant gun on the surface of their planet. What must the muzzle velocity for the projectile to escape the planet's gravitation when fired perpendicular to the horizon
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 104 m/s, What is the orbital speed of the second satellite
Derive the magnitude of the angular momentum vector of the electron in the ground state in tritium.
The right figure shows a force of magnitude F = 12.0 N applied to an 8.00 kg block at a downward angle of ? = 30.0°. find the magnitude of the frictional force on the block
A car traveling 90km/h slows down at a constant 0.50 m/s^2 just by "letting up on the gas." Compute the distance it travels during the third second.
What is the magnitude of the acceleration caused by magnetic force? Ignore the gravitational force acting on the electron.
A car with a mass of 1.50x10^3 kg starts from rest and accelerates to a speed of 18.0 m/s in 12s. Assume that the force of resistance remains constant at 400-N all through this time. What is the average power developed by the car's engine?
question1at one instant a bicyclist is 40.0 m due east of a parks flagpole going due south with a speed of 10.0 ms.
Now the gymnast (not holding any additional mass) walks directly above right support. What is the force the left support exerts on beam.
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