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Determine the change in potential energy of a 79.8 kilogram person when he takes an elevator from the first floor to 29th floor, if the distance between floors is 3.87 meter.
The image of a tree on a 35 mm color slide is 1 mm high. It is to be projected onto a screen 3 m from the slide, and is to appear 328 mm high. What is the magnification of the system
What is the velocity of a beam of electrons that go undeflected when passing through perpendicular electric and magnetic fields of magnitude 8.8 x 10^3 V/m and 3.5 x 10^-3 T respectively
Two charges are placed on the x axis. One of the charges q1= +8.5 C is at x1 = + 3.0 cm and the other q2= -21C is at x1 = + 9.0 cm. Find the net electric field (magnitude and direction) at.
q1. a worker stands still on a roof sloped at an angle of 40deg above the horizontal. he is prevented from slipping by
An 80 kg hockey player is gliding down the ice with a velocity of 7.5 m/s in +ve x directon.he is hit by a defensive player of mass 105 kg ans an initial velocity of 4.5m/s in -ve y direction.if the players experience a completely inelastic collision..
assume you throw someone a ball, thereby transporting kinetic energy. Could you consider the motion of the ball to be a mechanical wave pulse.
A force of 40.0 N accelerates a 5.0-kg block at 6.0m/s^2 along ahorizontal surface. How large is the frictional force
When beryllium-7 ions (m = 11.65 x 10-27 kg)pass through a mass spectrometer, a uniform magnetic field of 0.322T curves their path directly to the center of the detector, as inthe drawing. For the same accelerating potential difference, whatmagnet..
Two light bulbs labeled 50 W and 100 W, find the actual power consumed by the brighter bulb
Consider an electron in the ground state of the hydrogen atom, separated from the proton by a distance of 0.0529 nm. Viewing the electron as a satellite orbiting the proton in the electrostatic potential, calculate the speed of the electron in its ..
A stone is thrown upward with an initial speed of 20 m/s. What is its acceleration at the highest point of its trajectory?
a capacitor has parallel plates that have an area of 1.03 cm2 and are 1.04mm apart. there is a vacuum between the
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