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Suppose that a binary star system consists of two stars of equal mass. They are observed to be separated by 400 million kilometers and to take 3.0 Earth years to orbit about a point midway between them. What is the mass of each?
The position of an air-track cart that is oscillating on a spring is given by the equation x = 12.4 cos[(6.35 s-1)t] . At what value of t after t= 0.00s in the cart first located at x = 8.47 cm ?
Two polarizers are oriented at 22.0? to one another. Light polarized at a 11.0? angle to each polarizer passes through both
Illustrate what are the possible weaknesses in the Kimberely Process? Illustrate what role do you think the three sectors will have in addressing these weaknesses?
You digitize a 10-kHz signal by sampling it at twice the highest frequency (i.e 20,000 times a second) and encoding the the intensity in 8-bits. What is the resulting data rate
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.9 m/s due north relative to the water. If the river is 362 m wide, explain how far downstream is the boat when it reaches the north shore?
Two billiard balls are initially traveling toward each other at speeds of 1.40 m/s for ball 1 and 4.35 m/s for ball 2. Find the final velocities of both balls
What phase difference between two otherwise identical travelling waves, moving in the similar direction along a stretched string.
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the period of a satellite in a geosynchronous orbit
A child is riding across a rough field on a sled. Together, she and the sled have a mass of 73 kg. The sled is being pulled by her brother at an angle of 16º with a force of 356 Newtons. What is her acceleration if the coefficient of kinetic friction..
Two people are carrying a uniform wooden board that is 3.40m long and weighs 145N. What force does the other person lift
One solenoid is centered inside another. The outer one has a length of 50.0cm and contains 6800 coils, Find the emf induced in the inner solenoid
Find the force to keep object moving.
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