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An engine with an output of 170 W has an e?ciency of 45 %. It operates at 12 cycles/s.
a) How much work is done in each cycle? Answer in units of J
b) How much heat is absorbed in each cycle? Answer in units of J
c) How much heat is given o? in each cycle? Answer in units of J
Suppose there is a cube made of copper. Initially, it has a net charge of zero. How will the electrons arrange themselves
A 0.24-kg ball on a stick is whirled on a vertical circle at a constant speed. calculate the tension in the stick
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, find the oxygen concentration at the interior end of the tube
A uniformly charged sphere has a potential of 490 V on it's surface. At a radial distance of .24m from this surface the potential is 120 V. What is the radius of the sphere
Derive the magnitude of the angular momentum vector of the electron in the ground state in tritium.
Electrons are accelerated so that their de Broglie wavelength is .083nm. What is the kinetic energy of the electrons so that they have this de Broglie wavelength
A 0.287-kg particle undergoes simple harmonic motion along the horizontal x-axis between the points x1= -0.269 m and x2= 0.473 m. find the total mechanical energy of particle
Suppose the amount of heat added to the ice block is doubled. By what factor must the mass of the ice be increased if the system is to have the same final temperature
Draw a free-body diagram for the instrument during this time.(Assume that the space ship is accelerating upward. ) Find the force that the wire exerts on the instrument.
A long solenoid that has 1,060 turns uniformly distributed over a length of 0.395 m produces a magnetic field of magnitude 1.00 10-4 T at its center
1. - discuss the transient and steady states of a dc circuits response to a step input.2. -what components must be
A 10000 kg boxcar traveling at 20 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 11 m/s. What is the mass of second car.
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