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As a rocket passes the earth at 0.75c, it fires a laser perpendicular to its direction of travel as shown in the figure.
What is the speed of the laser beam relative to the earth?
v/c=?
How fast is the shadow of the plane moving along the ground? (That is, what is the magnitude of the horizontal component of the plane's velocity?)
You want to take a full-length photo of your friend who is 1.94m tall, using a 35.0mm camera having a 50.0mm lens, How far is the lens from the film
A car entering a freeway ramp accelerates from 14 m/s to 25 m/s in 10 seconds. what is the cars average acceleration during this 10 seconds.
During normal operation, a computer's hard disk spins at 7200 rpm. what is the average angular acceleration of the hard disk
A 200, 47.0 cm-diameter turntables rotate on frictionless bearings at 70. A 24.0 block sits at the center of the turntable. A compressed spring shoots the block radically outward along the frictionless groove in the surface of turntable.
A gymnast with mass m1 = 42 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 106 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
A small box of mass m1 is sitting on a board of mass m2 and length L . The board rests on a frictionless horizontal surface
A 25 cm Diameter coil consists of 50 turns of circular copper wire 2.5 mm in diameter. Determine the rate at which tyhermal energy is produced
What is the wavelength of the light in the glass
You (height of your eyes above the water, 1.75) are standing 2.00 from the edge of a 2.50--deep swimming pool. You notice that you can barely see your cell phone, that went missing a few minutes before, on the bottom of the pool.
A 550 -cm flask contains 0.450grams of a gas at a pressure of 140kPa, What is the molecular mass of this gas
An electron moving horizontally at 3.15 x 106 m/s enters a vertical magnetic field, Find the magnitude of the magnetic field in tesla (T)
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