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Suppose a heat engine pulls 3.37×104 J of work from the hot reservoir and 7.52×103 J of that energy is used to perform work. How much energy is rejected by the engine? (This energy is "exhausted" to the cold reservoir.) What is the efficiency of the engine? (enter this as a unitless number between 0 and 1)
questionrefrigerant is flowing while a frac34 inch o.d. copper tube under conditions such that its mixed temperature is
Calculate the acceleration of a bus that goes from 57.6 km/h to a speed of 99.79 km/h in 10 s
A car is travelling at 26 m/s when the driver spots a large pothole in road a distance 34 m ahead. She at once applies her brakes. If her acceleration is -7.5 m/s2, does she manage to stop before reaching the pothole.
how fast was the car going on the table. find the vertical and horizontal components of the pendulum's displacement.
Two 3.25μF capacitors are connected in series across the terminals of a 50.0-Hz ac generator that has a peak voltage of 244V. Determine the rms (peak) current in the circuit
Electrons are ejected from a certain metallic surface with speeds ranging up to 4.2 105 m/s when light with a wavelength of ? = 615 nm is used. What is the work function of the metal?
A meter stick is supported on a fulcrum at the 35 cm mark. A 0.70 kg object is hung from the zero end of the meter stick, What is the mass of the meter stick
An ambulance passes a bus stop at 50m/s with a siren of 340Hz, What is the wavelength heard by the bus stop costumers as the ambulance approaches
One end of a 68-cm-long copper rod with a diameter of 2.4cm is kept at 480?C, and the other is immersed in water at 24?C. Calculate the heat conduction rate along the rod
A spherical 0.34 kg orange, 2.0 cm in radius, is dropped from the top of a building of height 33 m. After striking the pavement, the shape of the orange is a 0.40 cm thick pancake. Neglect air resistance and assume that the collision is completely in..
When a ceiling fan rotating with an angular speed of 5.6 rad/s is turned off, What is the moment of inertia of the fan
A 1300 nF capacitor with round parallel plates 1 cm in radius is accumulating charge at the some unknown rate at time t0. What is the changing rate of the charge
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