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By calculation, determine the wavelength of three principal visible lines of hydrogen from energy transitions n=3,4, and 5 to the n=2 principal quantum levels?
A cart of mass m = 1.4 kg is released from the top of a ramp sloped ? = 13° relative to the horizontal. The length of the ramp is L =9.6 m. find the car's Kinetic Energy at the bottom of the ramp
A dockworker applies a constant horizontal force of 85.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
Illustrate what is the tangential velocity of the bug? One second after the bug starts from rest, what are its tangential acceleration, radial acceleration, and total acceleration(with the degree)
A railroad car with a mass of 2 x10^4 kg moving at 3.0 m/s collides and joins with 2 railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.20 m/s.
Mars has a mass of 6.4*10^23 kg and radius of 3,400,000 m. find the acceleration due to the gravity on Mars
The bullet first passes through the left disk and then through the right disk. It is found that the angular displacement between the two bullet holes is θ = 0.320 rad. From these data, evaluate the speed of the bullet.
A guitar string with a mass of 12 g is 80 cm long and attached to the guitar at two points separated by 65 cm. What is the frequency of its fundamental note when it is placed under a tension of 170 N? Answer A) 74 Hz B) 82 Hz C) 93 Hz D) 150 Hz E)..
A 0.15g honeybee acquires a charge of 21pCwhile flying, What is the ratio of the electric force on the bee tot he bee's weight and What electric field strength and direction would allow the bee to hang suspended in the air
A crate with mass 32.0 kg initially at rest on a warehouse floor is acted on by a net horizontal force of 156N. What acceleration is produced
What is the magnetic field strength
A 21 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 80.5 N and is directed at an angle of 30° above the horizontal. Determine the coefficient of kinetic friction.
If you hold a 400 cm^2 square plane mirror 43cm from your eyes and can just see the full length of an 8.1m falgpole behind you
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