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A closed system consists of 4 objects. Initially, object A has a charge of -200 C, object B has a charge of 134 C, object C has a charge of-54 C, and object D has a charge of146 C. After 219s have passed, object A has a -108 C charge, object B has a 46 C charge; and object C has a -194 C charge. How much charge does object D have?
An electromagnetic wave traveling in the negative x direction has an electric field amplitude of 10.0 V/m in the positive y direction. calculate the amplitude of the magnetic field
Charge of uniform density ρ = 3.4 µC/m3 fills a nonconducting solidsphere of radius 5.3 cm. What is the magnitude of the electric field 3.5 cm from the center of the sphere?
A concave shaving mirror has a radius of curvature of +28.3 centimeter. Estimate how far is the mirror from the face
In addition to dark matter cosmologists have proposed dark energy. The reason for this was the discovery of: A) slowing down of the expansion of the universe B) cosmic background radiation C) acceleration of the expansion of the universe D) gravitati..
Upstream of a normal shock in air the pressure is 14.7 psia and the temperature is 528R. Downstream of the shock the air pressure is 76.8 psia. What is the Mach number upstream of the shock
oppositely charged parallel plates are separated by 5.36 mm. a potential difference of 600 v exists between the
You are riding in an elevator on the way to18th floor in your dormitory. The elevator is accelerating upward witha=1.90m/s2. Beside you is the box containing your new computer; boxand contents have a total mass of 28.0kg.
a 50-N crate is pulled up a 5-m inclined plane by a worker at a constant velocity. what is the force applied by the worker
q1. what would be the equilibrium temperature when a 256 g block of copper at 314 degc is placed in a 140 g aluminium
a heavy piece of machinery is raised by sliding it a distance d = 14.9 m along a plank oriented at angle ? = 25.7° to the horizontal. How high above its original position is it raised
Cliff and Will support the board at each end so that it is horizontal. A 52 kg boulder is placed on a 2.00 m long board at a point that is x = 1.45 m from Cliff. What force does Will apply to the board
he rate P at which a star radiates energy in the form of electromagnetic waves can be calculated using the equation, Calculate a numerical value for the intensity of sunlight
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