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A 2.50-kg steel gasoline can hold 20.0 L of gasoline when full. What is the average density of the full gas can, taking into account the volume occupied by steel as well as by gasoline?
An 85 cm long guitar string is plucked and vibrates a the fouth harmonic. What is the frequency of the sound produced if the speed of sound is 332 m/s
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1020 Hz. The bird-watcher, however, hears a frequency of 1060 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
Incident X-rays in a Compton scattering experiment have a wavelength of 0.400 nm. The Compton wavelength of the electron is 2.43 x10-12 m. Determine the wavelength of the scattered X-rays if the outgoing electron has a energy of 15.6 eV.
A bicycle with tires 68cm in diameter travels 9.2km. How many revolutions do the wheels make? A rotating merry-go-round makes one complete revolution in 4.0s. (a) What is the linear speed of a child seated 1.2m from the center? (b) What is her acce..
A 0.0575 kg ball is dropped from a height of 6 meters. If theball hits the ground and rebounds to a height of 5 meters, what was the impulse exerted on the ball by the ground
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.55 104 m/s, and the radius of the orbit is 5.40 106 m. What is the orbital speed of the second satellite
If it has a mass of 14.0 g, what is the minimum current (in Amperes) through the wire that would cause a magnetic force equal to its weight
a spring has a spring constant of 400 N/m. the spring is compressed 15 cm and a 2 kg ball is placed on the spring in its compressed state. what is the potential energy of the spring in its compressed state
A Cylindrical solenoid has a radius a = 20 cm and a length l = 160cm. It is wound tightly controlled its 3200 turns of wire. And The wire carries a current i = 4μA. What is the magnetic field inside the solenoid?
A uniform plank of length 5.70 m and weight 215 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 452 N walk on the overhanging part of the plank before it just be..
Light from a sodium lamp (λ =589 nm) illuminates two narrowslits. The fringe spacing on a screen 150 cm behind the slit is 4.0mm. What is the spacing (in mm) between the two slits?
An airplane has a speed of 285 km/h relative to the air. There is awind blowing at 95 km/h at 30.0o north of east relativeto Earth. In which direction should the plane head to land at anairport due north of it present location? What is the plane's sp..
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