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A car engines has an efficiency of 25 percent and produces an average of 23,000 Joule of mechanical work per sec during operation.
(a) Determine how much heat input is required, and
(b) Find how much heat is discharged as waste heat from this engine, per sec?
Xu is a new material discovered by a TA. The specific heat C and latent heat L of Xu are measured by heating up a piece of Xu sample. The temperature T (in K) of Xu sample varying as a function of heat Q (in 103 J) transferred to it.
A father and a daughter balance a teeter-totter to illustrate the principle of the lever. If the father whose weight is 150 N is 8 m from one end, how far away on the opposite side of the fulcrum should the 50-N daughter stand to balance the teeter-t..
You're riding on a carousel ("merry-go-round") that is rotating at a constant 6.00 rpm. By what factor (multiplier) have you changed the magnitude of your total acceleration
If a washing machine's drum has a radius of 26 cm and spins at 4.0 rev/s, what is the strength of the artificial gravity to which the clothes are subjected
Suppose 1.86 kg of water at 14.4C is mixed with 2.28 kg of water at 79C. After equilibrium is reached, the mixture has an uniform temperature of 49.9768C. What is the change in entropy of the system? The speci?c heat of water is 4186 J/kg · K.
a charged particle is injected at 211 m/s into a 0.0627- T uniform magnetic magnetic field perpendicularly to the field, What is the charge to mass ratio of this particle
q1. the rate of energy use in a typical house is about 2 kw. if the kinetic energy of a car mass 1456 kg is equal to
A 13 g bullet traveling 215m/s penetrates a 2 kg block of wood and emerges cleanly at 157m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after bullet emerges.
A nanowire is a (nearly) one-dimensional structure with a diameter on the order of a few nanometers.
A light beam is incident on a piece of water (n = 1.333) at the Brewster's angle. Find the value of Brewster's angle
when an object is placed 57.0 from a certain converging lens it forms a real image. when the object is moved to 38.0
A bus makes a trip according to the position-time graph shown in the illustration. What is the average acceleration (in km/h2) of the bus
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