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A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 10.0 s. Ignore air resistance. The engine has a 22% efficiency, which means that 22% of the thermal energy released by the burning gasoline is converted into mechanical energy.
(a) What is the average mechanical power output of the engine?
(b) What volume of gasoline is consumed? Assume that the burning of 1.0 L of gasoline releases 47 MJ of thermal energy.
An amazing parent pushes their child's sled (total mass = 65kg) so that the sled is moving at 5 m/s at the top at the sledding hill which makes a 20 degree angle with the horizontal. calculate the speed of the sled
What is the charge per unit area on the plastic sheet.
A glass plate having parallel faces and a refractive index of 1.54 lies at the bottom of a liquid of refractive index 1.62. Compute the angle of refraction of this light in the glass
What is decrease in kinetic energy throughout the collision.
Two bumper cars are driving directly toward one another. The first car, mass m1 = 150 kg, What is the total momentum of the system
A stamp collector is viewing a stamp with a magnifying glass held next to her eye. What is the refractive power of a magnifying glass that has an angular magnification of 5.8 when the image of the stamp is located at the near point
A flat sheet of crystalline quartz has a thickness of 1.0 cm. It is on top of a flat sheet of diamond that has a thickness of 1.2 cm. how far would it have traveled in a vacuum
What is an angular speed of the small cylinders, which is between two inner and outer cylinders
A toy car with a mass of 120 g moves to the right with a speed of 0.62 m/s. A small child drops a 21.0-g piece of clay onto the car, What is the change in speed of the car
An X-ray photon with a wavelength of 0.250nm nm scatters from a free electron at rest. Find the initial momentum of the photon
The Calorie (or kcal) is another energy unit and is commonly used to measure food energy (as well as heat). How many Calories would you burn walking up a flight of stairs for an hour
While running, a person dissipates about 0.524 J of mechanical energy per step per kilogram of body mass. If a 65.5 kg person dissipates a power of 76.6 W during a race, explain how fast is the person running?
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