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A horizontal beam of electrons initially moving at 3.9 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel plates as shown in the diagram. The magnitude of the field is 1.70 104 N/C. (b) What is the charge per unit area on the plates? (c) What is the vertical deflection d of the electrons as they leave the plates?
At Zion National Park a loud shout produces the echo 3.40 s later from a colourful sandstone cliff. How far away is the cliff.
A subway train has three cars, each weighing 1.20 x 10^5 N. The frictional force on each car is 103 N, and the first car, acting as an engine, exerts a horizontal force of 4.80 x 10^4 N on the rails.
An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.
What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other? (Hint: Use charge conservation and solve for one of the initial charges. You would end up with a quadratic equation. The solutions g..
determine the force exerted by the wood on the bullet.
A 30-06 bullet has a mass of 0.010 kg. If the average force on the bullet is 7200 N, what is the bullet's average acceleration?
Why does a shirt or blouse taken from a clothes dryer sometimes cling to your body?
The atomic number of lead is 82. The alpha particle is a helium nucleus, with atomic number 2.
What is t he steam-side coefficient
Analysis of Physics, Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1 is 1 square inch, and the area A2 is 10 square inches
A lens placed at the origin with its axis pointing all along the x axis produces a real inverted image at x=-24cm that is twice as tall as the object. What is an image distance.
While John is travelling along an interstate highway, he notices a 139 mi marker as he passes through town. Later John passes a 116 mi marker. What is the distance between town and John's current location.
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