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Light enters a container of liquid at an angle of 42 degree to the normal; the refracted beam makes an angle of 31 degree with the normal. Evaluate the index of refraction of this liquid.
The frequency of a slightly damped harmonic oscillator is fd=1000 Hz. The amplitude of this oscillator drops to 1/e^(10) after 25 cycles. What are the undamped and resonant frequencies of the oscillator.
A freight train has a mass of 29000000 kilogram. If the locomotive can exert a constant pull of 530000 Newton's, find how long would it take to increase the speed of the train from rest to 89.9 km/h
An automobile on a flat track travels at 28 m/s around a curve with a 56 meter radius. Find the automobile's centripetal acceleration
A good baseball pitcher can throw a baseball toward homeplate at 85mi/h with a spin of 1800rev/min. How many revolutions does the baseball make
a log is floating on swiftly moving water. a stone is dropped from rest from a 78-m-high bridge and lands on the log as
if a coal burning electrical generating plant burns 2 tons of coal to generate 6000 kwh of electricity calculate the
In 4 to 5 billion years, the Sun is expected to enter a red giant phase, in which its outer layers will gradually expand out beyond Earth's present orbit. If the Sun's angular momentum is conserved as it expands, and its mass doesn't change, will its..
a projectile is shot from the edge of a cliff h=125m aboveground level with an initial speed of v0=155m/s at an angle of 37.0degrees with the horizontal. determine the time taken by the projectile to hit point Pat ground level
you illuminate a slit of width 0.0575 mm with light of wavelength 715 nm and observe the resulting diffraction pattern
A room with dimensions 7M X 8M X 2.5M is to be filled with pure oxygen at 22.0 degrees C and 1.00 atm. The molar mass of oxygen is 32.0 g/mol. How many moles of oxygen are required to fill the room
A 5.080 kg block of wood rests on a steel desk, State the force of friction applied to the block by the table at the following times: t=0 and t>0
A transformer is to be used to provide power for a computer disk drive that needs 5.0 V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 415, and it delivers 500 mA (the secondary current) at an output v..
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