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The energy absorbed by an engine is seven times greater than the work it performs.
(a) What is its thermal efficiency?
%
(b) What fraction of the energy absorbed is expelled to the cold reservoir?
At which angle will the photon scatter with respect to its original direction? (The accepted unit abbreviations for angles are either 'deg' for degrees or 'rad' for radians.)
The top of the spring is connected to a string of mass per unit length of 2:0 10??3 held under a tension of 80 N. What is the velocity of the pulse
Which of these systems are made of identical particles? Explain
A rope can withstand 1.0 x 10^3 N of tension. If the rope is being used to pull a 10.0-kg package across a c=frictionless surface, what is the greatest acceleration that will not break the rope
Wile E. Coyote and the Roadrunner are fictional cartoon characters. The premise of the cartoon is that Wile E. Coyote unsuccessfully tries to catch the very fast and clever Roadrunner. What is the momentum of the second wagon after the collision
A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 5000N/C, Find the speed of the particle if it is a proton
A rectagular boat is overloaded so that the water level (in fresh wateer) is just one centimeter (1.0cm) below the top of the boat, what is combined mass of all the people and the boat combined
Jerry is 57 kg and when he stands on a bathroom scale, the spring inside the scale compresses 0.41 mm. If the scale will be damaged if the force exceeds 60000 N, what is the maximum height Jerry can jump on the scale
The balance wheel of a watch oscillates with angular amplitude 0.90? rad and period 0.68 s. Find the maximum angular speed of the wheel
A small block with mass .2kg is released from rest at the top of a frictionless incline. how far down the incline does it travel in 2s
A balloon containing 2.0 m^3 of hydrogen gas rises from a location at which the temperature is 22 degrees Celsius, what is the new volume of the balloon
An airplane must reach a speed of 172 mi/h to take off. If the runway is 470 m long, what is the minimum value of the acceleration that would allow the airplane to take off productively.
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