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A uniform electric field of 500 N/C is established between two oppositely charged metal plates. A particle with a charge of +0.003 C is moved from the bottom (negatively charged) plate to the top plate. (Imagine that the string is tied to the charged that is pulling it upward). The distance between the plate is 5cm.
A. What is the change in the potential energy of the charge?
B. What is the change in electric potential from the bottom to the top plate?
A motorist traveling with a constant speed of 20.0 m/s passes a school-crossing corner, where the speed limit is 15.0 m/s. Just as the motorist passes, a police officer on a motorcycle at the corner starts off in pursuit with constant acceleration of 5.0 m/s^2. What is the total distance traveled by the motorist
Find the curl of the function r= xi+yj over x+y
Two identically charged one-peso coins are 1.5 m apart on a table. What is the charge of the coins if each of them experiences a repulsive force of 2.0 N?
The piston of a hydraulic automobile lift is 30 cm in diameter. What pressure, in
pascals, is required to lift a car of mass 1500 kg. Also express this pressure in
atmosphere.
A diving bell is to be designed to withstand the pressure of water at a depth of
2000 ft.
a. If sea water weighs 64 lb per cubic foot, what is the pressure at the depth?
b. What is the total force on a circular glass window 6 inches in diameter?
A certain body weighs 12N in air and 10 N in when immersed in water. Find its
total volume and its density.
When the United States finally converts officially to metric units, the Celsius
temperature scale will replace the Fahrenheit scale for everyday use. As a
familiarization exercise, find the Celsius temperature corresponding to
a. Cool room (68°F)
b. A hot summer day (95°F) and
c. A cold winter day (5°F)
Suppose you have a 12.0V motorcycle battery that can move 5000C of charge and a 12.0V car battery that can move 60, 000C of charge. how much energy does each deliver? (Assume that the numerical value of each charge is accurate to three significant figures)
Helium is contained in a 3 𝑚3 rigid volume at 60℃ and 100 kPa. Find the heat transfer needed to increase the pressure to 1000 kPa.
