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Light of wavelength 659.9 nm is emitted by a star. The wavelength of this light as measured on Earth is 660.9 nm. How fast is the star moving with respect to Earth?
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 17.0 m/s. With what speed and angle of impact does the stone land
the distance between the earth and moon (r = 3.84 Ã- 108 m) and Mmoon = 7.36 Ã- 1022kg and Mearth = 5.98 Ã- 1024kg. Calculate the gravitational potential energy of the moon
A 20.0 kg crate sits at rest at the bottom of a 12.9 m long ramp that is inclined at 33 degrees above the horizontal. What is the total work done on the crate during its motion from the bottom to the top of the ramp
Speedy Sue, driving at 34.0m/s, enters a one-lane tunnel. She then observes a slow-moving van 175m ahead traveling with velocity 5.40 m/s. Sue applies her brakes but can accelerate only at 2.00 m/s2 since the road is wet. Will there be a collision..
If we assume the ice is perfectly slick (that is, no friction between the crewman and the ice once he slips and falls down), At what speed will the crewman hit the bottom of the ravine
A spring is first stretched 2.0 cm from its unstressed length. Itis then stretched an additional 2.1 cm. How does the work required forthe second stretch compare to the work required for the firststretch (give a ratio of second to first)? (Be sure yo..
A particle of mass 7.7 × 10-8 kg and charge +8.0 ?C is traveling due east. It enters perpendicularly a magnetic field whose magnitude is 3.2 T, How much time does the particle spend in the magnetic field
Find the power factor for an RC circuit connected to a 80.0Hz generator with an rms voltage of 155V
The giant hornet Vespa mandarinia japonica preys on Japanese bees. However, if one of the hornets attempts to invade a beehive, several hundred of the bees quickly form a compact ball around the hornet to stop it. They don't sting, bite, crush, or..
A string oscillates according to the equation y´ = (0.175 cm) sin[(?/5.0 cm-1)x] cos[(22.6 ? s-1)t]. What is the distance between nodes
When a mercury manometer is connected to a gas main, the mercury stands 48.9 cm higher in the tube that is open to the air than in the tube connected to the gas main
At this depth, what is the buoyant force on a spherical submarine having a diameter of 4.60 m
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