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If the radius of the equipotential surface of a point charge is 25 meter and is at a potential of +1.50 kV (compared to zero at infinity), obtain the magnitude and sign of the point charge?
The resistance and the magnitude of the current depend on the path that the current takes. The drawing shows three situations in which the current takes different paths through a piece of material. Each of the rectangular pieces is made from a mat..
A 9.00 bullet has a speed of 1.10 km/s. What is the bullet's kinetic energy if its speed is halved, What is its kinetic energy in joules
A long solenoid has 150 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 2.40 cm perpendicular to the solenoid axis. The speed of the electron is 0.056 c (c = speed of light). Find the current i in the solen..
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.13 m2, what is the percentage lost by the window
How far does Tinki drive before passing David.
A physicist wraps a long copper wire around a toilet paper roll and places the roll in a uniform magnetic field. The axis of the roll is aligned by the field. The radius of the roll is r = 5 cm and the strength of the field is B = 0.1 T. If the physi..
A 4.9 kg cart is placed on a frictionless air track with an angle of 47.6o. A 24.2 kg mass is attached to the cart using a massless string draped over the end of a frictionless pulley at the top of the track. What is the expected acceleration of the ..
Write any two properties of electric field lines. A neutral conducting sphere contains a spherical cavity. A point charge +q is located at the center of the cavity. What is the total charge on the exterior surface of the conductor? What is the total ..
A sled weighs 100 N. It is held in place on a frictionless 20 degree slope by a rope attached to a stake at the top of the slope; What is the normal force acting on the sled
The convex lens of a copy machine has a focal length of 25.0cm. A letter to be copied is placed 40.0cm from the lens. How far from the lens is the copy paper located? The machine was adjusted to give an enlarged copy of the letter. How much larger wi..
A certain lightbulb has a tungsten filament with a resistance of 18.0 when cold and 138 when hot. Find the temperature of the hot filament
A 195-g block is pressed against a spring of force constant 1.15 kN/m until the block compresses the spring 10.0 cm. The spring rests at the bottom of a ramp inclined at 60.0° to the horizontal. Using energy considerations, determine how far up th..
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