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The electron gun of a television tube accelerates an electronfrom rest through a potential difference of 350V.
a) What is the change in the potential energy of the electron?
b) What is the speed of the electron as a result of thistransformation of potential energy into kinetic energy?
What is the total force on the bottom of a swimming pool 13.0m by 6.9m whose uniform depth is 2.1m ? What is the absolute pressure on the bottom of a swimming pool? What will be the pressure against the side of the pool near the bottom?
Two conducting wires of the same material are to have the same resistance. One wire is 17 m long and 0.39 mm in diameter. If the other wire is 0.31 mm in diameter, how long should it be?
Two vectors A and B have components (0, 1, 2) and (-1, 3, 1), respectively. Determine the magnitude of the sum of these two vectors
Assuming that the disks form a circular parallel plate capacitor and the electron are initially at rest when they pass through the first disk. A) determine the acceleration that the electrons undergo and B) the speed of the electrons as they pass ..
A horizontal magnetic field of 1.0 x 10-4 T is at an angle of 30o to the direction of the current in a straight wire 75 cm long. If the wire carries a current of 15 A
suppose there is significant air resistance in addition to the spring force acting on the mass as it oscillates up and down. how will the elastic potential energy change
A solid disk (mass = 5 kg, R=0.6 m) is rolling across a table with a translational speed of 9 m/s. What is the total kinetic energy of the disk
Consider a spring handing vertically from a ceiling, attached to a mass m of 2 kg. The spring constant, k, is 30 N/m. How far does the spring travel downwards before it reverses direction
A copper block rests 25.5cm from the center of a steel turntable. The coefficient of static friction between block and surface is 0.52. The turntable starts from rest and rotates with a constant angular acceleration of 0.475 rad/s2. After what tim..
A 20 kg block is stacked on top of the 20 kg block. Both blocks are glued together. What is the magnitude F of force, acting horizontally on the two blocks, that is required to make the two blocks start to move.
What is the stopping distance of the car, as measured from the point where the driver first notices the red light?
One 20-year-old twin brother takes a space trip with a speed of 0.80c for 30 years according to a clock on the spaceship, what is his own age and the age of the Earth-based twin brother
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