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Electrons from a heated cathode are accelerated through a potential difference of 30.0 Volt. Find the speed of electrons escaping through a hole in the anode.
m/s
A titanium rod (0.5 m) and an aluminum (0.5 m) rods are connected, and fixed to the right side of the wall. Find the temperature at which the total length is increased by 1 mm
Two uniform solid cylinders each rotating about its central(longitudinal) axis, have the same mass of 4.92 kg and rotate with the same angular speed of 118rad/s, but they differ in radius
a magnetic field has a magnitude of 1.20 x 10-3 t and an electric field has a magnitude of 4.70 x 103 nc. both fields
at an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. people sit in
Suppose you pour water into a container until it reaches a depth of 44.6 cm. What is the pressure at the bottom of the container
A 20.0-kg sled is being pulled across a horizontal surface at a constant velocity. Determine the coefficient of kinetic friction
A spectral line of sodium normally has a wavelength of 5890Angstroms. The same line measured in the spectrum of a star is at awavelength of 5625 Angstroms. At what speed in the star traveling? Is the star moving towards us or away from us?
A 1540.0 g mass is ona horizontal surface with μk = 0.31, andis in contact with a massless spring with a force constant of 787.0N/m which is compressed. When the spring is released, it does 2.52J of work on the mass while returning to its equilibr..
A hot-air balloonist, rising vertically with a constant velocity of magnitude = 5.00m/s , releases a sandbag at an instant when the balloon is a height = 40.0m above the ground, With what magnitude of velocity does it strike
The side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is following, 20 m behind the mirror. If the height of the car is 1.6 m, how tall is the image
A defibrillator passes a brief burst of current through the heart to restore normal beating. In one such defibrillator, What is the initial current through the patient
In the August 1992 space shuttle fight, only 250 m of the conducting tether could be let out. What was the angle between the shuttle's velocity and the Earth's field, assuming the conductor was perpendicular to the field
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