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A proton is moving in uniform electric field of 1.4 N/C directed to the west. At point A, the velocity of the proton is 19500 m/s toward the east. What is the speed (in m/s) of the proton when it reaches point B which is 0.5 m east of point A?
What was an initial speed of the ball
A computer is reading data from a rotating CD-ROM. At a point that is 0.037 m from the center of the disc, the centripetal acceleration is 120 m/s2. What is the centripetal acceleration at a point that is 0.054 m from the center of the disc
A space probe is traveling in outer space with a momentum that has a magnitude of 7.5 x 10^7 kg*m/s. A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of 2.0 x 10^6 N and has a direction opposite t..
A toy cannon uses a spring to project a 5.30 g soft rubber ball. The spring is originally compressed by 5.00 cm, At what point does the ball have maximum speed
A 3440 kg statue is supported by a glass stand. The cross-section of the stand is square, 0.15 m to a side. Before the statue was placed on the stand, How much is the stand compressed by the statue
The threshold of dark-adapted (scotopic) vision is 4.0 multiplied by 10-11 W/m2 at a central wavelength of 500 nm. how many photons per second enter the eye
Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, Find the time at which Kathy overtakes Stan
In a heart pacemaker, a pulse is delivered to the heart 81 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 1.8 x 106. One pulse is delivered every time the fully charged capacitor loses 60.5% of its ..
Determine the flux of particles escaping from the exobase of Earth's atmosphere using a number density at the exobase of 10^5 particles/cm^3 and a temperature of 700K.
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 33 angle. The block's initial speed is 14. What speed does it have when it slides back down to its starting point
A 1.5 m long stick with a mass of 0.3 kg is pivoted on a hinge at one end and held horizontally by a spring with spring constant 10 N/m attached at the other end
Treat a cell in a human as a sphere of radius 1.0 µm. What's the volume of the cell
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