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A particular heat engine has a useful power output of 4.40 kW and an efficiency of 30.0%. The engine expels 7200 J of exhaust energy in each cycle
(a) Find the energy taken in during each cycle.
(b) Find the time interval for each cycle.
A 3.5 k and a 1.5 k resistor are connected in parallel and this combination is connected in series with a 1.8 k resistor. If each resistor is rated at 1/2 W, what is the highest voltage that can be applied across the whole network.
A test of the prototype of a new automobile shows that the minimum distance for a con- trolled stop from 92 km/h to zero is 54 m. How much time does the car take to stop
What are the two main mechanisms that the planet Earth uses to balance water that goes up with the water that comes down over Earth.
You are arguing over a cell phone while trailing an unmarked police car by 26.0 m; both your car and the police car are traveling at 120 km/h. what is your speed (in km/h) when you hit the police car
wo point charges are located as shown in the figure, with charge q1 = +1.6 C at x = ?3.0 m, y = 0, How much work must be done on the electron to move it to the origin
An Indy car with a speed of 140 goes around a level, circular track with a radius of 1.50 What is the centripetal acceleration of the car
A block of mass 2 kg travels along a horizontal frictionless surface with velocity 3 m/s. What impulse was delivered to mass m
Two identical guitar strings are prepared such that they have the same length (2.43 m) and are under the same amount of tension. find the wave propagation speed on the guitar strings
The resistivity of the commercial copper is 1.72 x 10^-8 m. The diameter of a copper wire in the coil of a solenoid is 0.25 mm, find the heat generated in the coil each second
Two spherical shells have a common center. A -3.00 x10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +4.00 x10-6 C charge is spread uniformly over the outer shell, which has a radius of 0.15 m. Find the magnitu..
You have a 2.5m long copper wire. You want to make an N-turn current loop that generates a 1.2mT magnetic field at the center when the current is 1.9A, What will be the diameter of your coil
Two capacitors, C1 = 32.0 µF and C2 = 4.00 µF, are connected in parallel and charged with a 110-V power supply. Calculate the total energy stored in the two capacitors
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