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A moving particle encounters an external electric field that decreases its kinetic energy from 9520 eV to 7060 eV as the particle moves from position A to position B. The electric potential at A is -55.0 V, and the electric potential at B is +27.0 V. Determine the charge of the particle. Include the algebraic sign (+ or -) with your answer.
An elastic cord is 66 cm long when a weight of 66 N hangs from it but is 86 cm long when a weight of 76 N hangs from it. What is the "spring" constant k of the elastic cord.
A small mass m is set on the surface of a sphere, Fig. 4-51. If the coefficient of static friction is µs = 0.57, at what angle would the mass start sliding
Starting from rest, a 2.2x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, What is the flea's speed when it leaves the ground
Consider a rectangular loop of wire 6.8cm by 7.8cm in a uniform magnetic field of magnitude 1.4T. What is the average induced emf in the loop
two long parallel wires separated by 50 cm both carry currents of 4.0 A in the same vertically up direction. Find the magnetic field midway between the wires
An aluminum bar has a length of 2.0 m and transverse dimensions of 3.5 mm and 6.9 mm, What force is required to stretch the bar 1.2 mm
Calculate the magnitude of the gravitational force exerted on a 462-kg satellite that is a distance of 2.08 earth radii from the center of the earth. What is the magnitude of the earth's acceleration
Determine the electrostatic potential energy of an electron in the ground state of the hydrogen atom
An iron bar 40 cm long is braised to a copper bar 40 cm long and of the same diameter. What is the temperature of the junction point
Find out the potential difference between a point.
The angular momentum of a flywheel having a rotational inertia of 0.100 kg·m2 about its central axis decreases from 3.00 to 0.400 kg·m2/s in 0.80 s. What is the average power of the flywheel
A mass vibrates at the end of a spring with simple harmonic motion. The spring constant is 30 N/m. What is the kinetic energy of the mass when it is at half its amplitude
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