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You want a screen to be illuminated with an intensity of 662 mW/m2. The screen is 10.05 m away from the light source, which is a bare light bulb radiating light in all directions.
What is the power of the light source?
W
What is the rms value of the electric field at the screen?
__________V/m
Find out the effective coefficient of kinetic friction
In the figure particles with charges q1 = +5e and q2 = -13e are fixed in place with a separation of d = 21.3 cm, what are the finite positive and negative values of x
Three light bulbs each with a resistance of 50W, are connected in series to a 100 V power supply. What is the current flowing through the third light bulb.
After the skier on the hill had been moving for 5.0 s, friction of the snow suddenly increasedmaking the net force on the skier zero. what is new coefficient of friction? how fast would the skier now be going after skiing for 5.0s.
A ball is thrown horizontally from the top of a 55 m building and lands 105 m from the base of the building, How long is the ball in the air in seconds
A 180 g wire is held under a tension of 216 N with one end at x = 0 and the other at x = 15.0 m. At time t = 0, pulse 1 is sent along the wire from the end at x = 15.0 m. At time t = 37.9 ms, pulse 2 is sent along the wire from the end at x = 0. A..
Suppose I have two infinite wires, one on the y axis and one on the x axis, each charged uniformly with lamda C/m. Find an expression for the electric field E at any point in the x and y plane as a function of x and y.
You are so tired after studying that you leave all of these household devices turned on for 13.0 hours, Calculate the cost (in dollars) of the electric bill
an electron and a proton are each accelerated through a potential difference pf 10.0 million volts. Find the momentum ( in MeV/c) and the kinetic Energy ( in MeV) of each and compare with the results of using the classical Formular.
Three identical point particles that have charge q are at the vertices of an equilateral triangle that is circumscribed by a circle of radius a that lies in the z = 0 plane, What is the electric potential at the origin
A thin film of oil (n = 1.10) is located on smooth, wet pavement. When viewed from a direction perpendicular to the pavement, What is the minimum thickness of the oil film?
Under the assumption that the actual acceleration is constant determine the number of times that the wheel rotates in the interval from the initial time to the final time.
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