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In a cathode ray tube, electrons are accelerated from rest with a constant electric force of magnitude 6.45 x10 −17 N through the first 2.18 cm of tube's length; then they move at essentially constant velocity another 45.0 cm before hitting the screen. Discover the speed of the electrons when they hit the screen. How long does it take them to travel the length of the tube?
Two resistors with values of 21 omega sign and 20 omega sign, respectively, are linked in series and hooks to a 12 V battery. How much current is in the circuit? How much power is expended in the circuit?
You are mowing your grass with an electric lawn mower. As you move to taller grass the lawn mower blade slows down. What happens to the current and voltage going to the lawn mower when you move from shorter grass to taller grass?
A metal wire 75 centimeter long and 0.130 centimeter in diameter stretches 0.0350 centimeter when a load of 8 kilogram is hung on its end. Determine what is the stress
A converging lens (f = 14.6 cm) is located 31.4 cm to the left of a diverging lens (f = -7.91 cm), Find the overall magnification
A block of mass m = 3.20 kg is pushed a distance d = 6.40 m along a frictionless, Determine the work done by the net force on the block
A friend in a spaceship travels past you at a high speed. According to your observations, determine how long is his ship
While at a country fair, you decide to ride the Ferris wheel. Having eaten too many candy apples and elephant ears, you find the motion somewhat unpleasant. Calculate the magnitude of your acceleration
A 0.58-kg metal sphere oscillates at the end of a perpendicular spring. As the spring stretches from 0.13 to 0.26 m (relative to its unstrained length), the speed of the sphere decreases from 5.45 to 5.10 m/s. What is the spring constant of the sprin..
an electron moves at right angles to a magnetic field of 0.10 . what is its speed if the force exerted on it is
A 0.73-kg mass is hanging from a spring with spring constant 13 N/m. What is the resulting period of the oscillation
Two air-track gliders m1 and m2 are joined together with a light string. What is the tension in the cord joining gliders
A spherical steel shell with shell thickness 10 mm rolling down the ramp without slipping.assume that the density of aluminum.
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