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An electrically neutral model airplane is flying in a horizontalcircle on a 3.0m guideline, which is nearly parallel to theground. The line breaks when the kinetic energy of the planeis 50.0 J. Reconsider the same situation, except that now there isa point charge of +q on the plane and a point charge of -q at theother end of the guideline. In this case, the line breakswhen the kinetic energy of the plane is 51.8 J. Find the magnitude of the charges.
Each plate of a parallel-plate capacitor is a square of side 0.0375 m and the plates are separated by 0.449 × 10-3 m. Find the electric field strength inside the capacitor
A particle of mass 7.22 x 10^-27 kg, moving at 7.06 x 10^5 m/s, strike an identical particle which is initially at rest. calculate the final speeds of the particles
A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. Find the total sound intensity that the man hears when he is at his initial position halfway between the speakers
Picture a uniform disk with a circular hole cut out of it. The disk has a radius of 4.00 m. What is the x-coordinate of the center of gravity of the system
Two divers jump from a 5-m platform. One jumps upward at 1.90m/s , and the second steps off the platform as the first passes it on the way down. By how much does the first diver hit the water first (seconds)
A 200-turn retangular coil with an area of 20.0 cm x 30.0 cm is mounted on a rotating frame, What is the maximum emf in the coil
A 62.0 kg bungee jumper jumbs from a brigde. She is tied to a bungee cord whose unstretched length is 12.0 m, and falls a total of 31.0 m. Calcule the spring constant k of the bungee cord
Precisely 1.10 after the speeder passes, the policeman steps on the accelerator. If the police car's acceleration is 2.10 m/s2, Explain how much time elapses after the police car is passed until it overtakes the speeder
A uniform rod is attached to a wall by a hinge at its base. Determine the horizontal and vertical components of the force exerted on the rod by the hinge
A performer seated on a trapeze is swinging back and forth with a period of 8.85 s. what will be the new period of the system
An experiment was performed where a quartz-iodine lamp was used to measure the photocurrent in microamperes in intervals of 10 nm from 400 nm to 900 nm for the voltage settings of 60, 80, 100, and 120V.
A car chases a coyote down a road ending in a sheer cliff. What frequency does the coyote hear for the sound reflected from the cliff
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