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A beam of light, travelling in air, strikes a plate of transparent material at an angle of incidence of 56.0°. It is observed that the reflected and refracted beams form an angle of 90.0°. What is the index of refraction of this material?
question1a concave mirror is made by coating the inner surface of a segment of a spherical shell with a reflecting
We used a 100g mass hung from the 10 cm mark on a meter stick. find the mass of the stick using method of torques
an a.c. generator which produces an rms voltage of 120 v at 60 hz is connected to a 57 microf capacitor. there are no
An Atwood system which has two masses, m1 = 2 kg and m2 = 2.1 kg. What is the net force on this system
A tube is open only at one end. A certain harmonic generted by the tube has a frequency of 470Hz. The next higher harmonic has a frequency of 555Hz. The speed of sound in air is 343m/s.
a swimmer wears a heavy belt to make her average densityexactly equal to the density of water. Her mass, including thebelt, is 60kg. what is the swimmer's weight in newtons
A cylinder with a ,ovable piston contains gas at a temp of 27degree C, a whole volume of 1.50 m cubed and an absolute pressureof 0.200 X 10 ^ 5 pa. What will be its final temp if the gas is compressed to 0.700 m cubed and the absoulte pressure increa..
A ray of light is incident on a flat mirror at an angle?. If we then rotate the mirror by 10° while keeping the incident ray fixed, by what angle will we rotate the reflected ray
A container with a pressure of 3 atmospheres and a temperature of 200c contains 36 gram of nitrogen. what is the mean distance between molecules, assuming that the container is a cube
A rifle is aimed horizontally at the center of a large target 200 meter away the initial speed of the bullet is 500 m/s, Determine where does the bullet strike the target
Large meteors can impact the earth with speeds of 80,000 km/h. If such a meteor were to impact at a point on the plane of Earth's equator, calculate the mass of the meteor
A pipe with a diameter of 2.88 cm is carrying 134 liters/minute of water with an overpressure (gauge pressure) of 3.65 atmospheres. Find the overpressure of the water in the pipe at the top of the building
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