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A gasoline engine takes in 1.70×10^4J of heat and delivers 3900J of work per cycle. The heat is obtained by burning gasoline with a heat of combustion of 4.60×10^4 J/g.
Part A What is the thermal efficiency of the engine?
Part B How much heat is discarded in each cycle?
Part C What mass of fuel is burned in each cycle?
Part D If the engine goes through 56.0 cycles per second, what is its power output in kilowatts?
Part E If the engine goes through 56.0 cycles per second, what is its power output in horsepower?
An athlete at the gym holds a 1.8-kg steel ball in his hand. His arm is 74-cm long and has a mass of 4.00 kg. What is the magnitude of the torque about his muster if he holds his arm straight out, parallel to the floor.
By what factor will the rms speed of gas molecules increase if the temperature is increased from 40 ?C to 150 ?C
A pitcher throws a curveball that reaches the catcher in 0.55s. The ball curves because it is spinning at an average angular velocity of 280rev/min (assumed constant) on its way to catcher's mitt.
A circular coil of wire 8.40cm in diameter has 16.0 turns and carries a current of 2.60A . The coil is in a region where the magnetic field is 0.580 T, What is this maximum torque in part (A)
You are driving into St. Louis, Missouri, and in the distance you see the famous Gateway-to-the-West arch. how far (in kilometers) are you from the base of the arch
Two trains on separate tracks move toward each other. Train 1 has a speed of 115 km/h; train 2 a speed of 62.0 km/h. What is the frequency heard by the engineer on train 1
What must be the thickness of the liquid layer if normally incident light with? = 504 nm in air is to be strongly reflected
A rocket of mass 4.5 x10^5 kg is in flight. Its thrust is directed at an angle of 53° above the horizontal and has a magnitude of 6.80 x10^6 N. Find out the magnitude and direction of the rockets acceleration. Give the direction as an angle above ..
You are driving home from school steadily at 94 for 120. It after that begins to rain and you slow to 60. You arrive home after driving two hours and 20 minutes. How far is your hometown from school.
In the days of horse-drawn wagons, iron tires used to be placed on wooden wagon wheels by heating the iron rims, what diameter will the tire have when it is heated to 680 oC
If it started falling from an upright position, what was the initial angular acceleration of the structure? suppose that the bottom did not slide across the floor and that it did not fall out of plane; that is, during the fall, the structure remained..
A 3000-kg Ferris wheel accelerates from rest to an angular speed of 0.17rad/s in 11s, calculate the net torque on the wheel
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