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1. Electrons leave the cathode of a TV tube at essentially zero speed and are accelerated toward the front by 10,000 V potential. At what speed do they strike the screen? Express this value as a fraction of the speed of light.
2. A charge of -4.00 μC is fixed in place. From a horizontal distance of 55.0cm, a particle mass 2.50 x 10^-3 kg and charge -3.00μC is fired with an initial speed of 15.0m/s directly toward the fixed charge. How far does the particle travel before it stops and begins to return back?
3. In the figure to the right, find the magnitude and direction of the electric field at points A, B,C and D.
4. In question 3, calculate the work needed to move a 1.5μC test charge from point B to point D.
5. A 15μ F capacitor is connected to a 55 V battery and becomes fully charged. The battery is removed and the circuit is left open. A slab of dielectric material is inserted to completely fill the space between the plates. It has a dielectric constant of 4.8. What is the voltage across the capacitor plates after the slab is in place?
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. find the speed of a satellite in geosynchronous orbit
A trap door, of length and width 2.35 m, is held open at an angle of 65.0° with respect to the floor. what is the torque exerted on the trap door by the rope
A 5.1 foot-tall girl stands on level ground. The sun is 23 Degrees above the horizon. How long is her shadow
A solid marble, a solid disk and a hoop have the same mass (M = 0.9 kg) and the same radius. Each object is held at rest at the same height and then released. what is the force the track exerts on the hoop
The identical twins Speedo and Goslo join a migration from the Earth to Planet X. It is 20.0 light-years away in a reference frame in which both planets are at rest. The twins, of the same age, depart at the same time on dissimilar spacecraft. Speedo..
You are making pesto for your pasta and have a cylindrical measuring cup 10.4cm high made of ordinary glass (?=2.7×10?5(C?)?1), At what temperature will the olive oil start to spill out of the cup
You are climbing up stairs, gaining 10 meters of height per minute. In order to do that, your body has to do some work, using energy, at a given rate. What is the power produced by your body
A motorboat heads due east at 11.00 m/s across a river that flows toward the south at a speed of 3.40 m/s. What is the resultant velocity relative to an observer on the shore? If the river is 1360m wide, how long does take the boat to cross.
A vessel at rest at the origin of an xy coordinate system explodes into three pieces. Just after the explosion, one piece, of mass m, moves with velocity v in the negative x direction, what is the magnitude of the velocity of the third piece
A cart of mass 360 g is placed on a frictionless horizontal air track. A spring having a spring constant of 9.0 N/m is attached between the cart and the left end of the track.
A 650-kg car stopped at an intersection is rear-ended by a 1720-kg truck moving with a speed of 22 m/s. find the final speed of both vehicles after the collision
A coffee cup heater and a lamp are connected in parallel to the same 120-V outlet. Find the resistance of the lamp
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