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Q. One of the beams of an interferometer, as seen in the figure below, passes through a small glass container containing a cavity D = 1.29 cm deep. When a gas is allowed to slowly fill the container, a total of 229 dark fringes are counted to move past a reference line. The light used has a wavelength of 628 nm. Calculate the index of refraction of the gas, assuming that the interferometer is in vacuum.
Q. A 200 g block hangs from a spring with spring constant 10 N/m. At t=0 s the block is 23 cm below the equilibrium point and moving upward with a speed of 125 cm/s. What are the block's oscillation frequency? What is the block's distance from equilibrium when the speed is 57 cm/s? What is the block's position at t=2.0s?
Astronomers discover a binary star system that has a period of 93.0 days. The binary star system consists of two equal-mass stars, each with a mass twice that of the sun, that rotate like a dumbbell about the centre of mass at the midpoint between..
What is the magnitude of the electric field at this point?
A uniform plank of length 4.7 m and weight 221 N rests horizontally on two supports, with 1.1 m of plank hanging over the right support. To what distance x can a person who weighs 440 N walk on the overhanging part of the plank before it just begi..
Question: Field and force with three charges? What is the electric field at the location of Q1, due to Q 2 ?
A 2.00×10-2- cube of ice at an initial temperature of -19 is placed in 0.670 of water at 44.0 in an insulated container of negligible mass.
What should the charge (sign and magnitude) of a particle of mass 1.21 be for it to remain stationary when placed in a downward-directed electric field of magnitude 610.
50 g ball travelling at 25.0 m/s is bounced off a brick wall and rebounds at 22.0m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.51 ms, what is the average acceleration of the ball throughout this time inter..
A massless string runs around two massless, frictionless pulleys. An object with mass m = 12.20 kg hangs from one pulley. A force F is exerted on the free end of the string. What is the magnitude of the force F if the object is lifted at the constant..
define the hazards for astronauts inside any spacecraft moving in the vicinity of a pulsar.
A high-speed drill reaches 2000 rpm in 0.50 s. What is the drill's angular acceleration? Through how many revolutions does it turn during this first 0.50s.
The latent heat of fusion
A particle oscillates with S.H.M. The maximum displacement from its mean position is 0.5 meter and frequency of motion is 10 Hz. at time t=0, particle is located at 0.15 meter and has the velocity of 24.0 m/s towards the negative x-axis.
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