The strong force depends upon the electric charge of the particles involved
a. True
b. False
Indicate whether the statement is true or false
False
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How did James Joule determine how much work is equivalent to how much heat?
a. By attaching a team of horses to cannon-boring equipment. b. By repeating Rumford's experiments but measuring the amount of heat created. c. By defining one horsepower as the rate that a very strong horse does work. d. By creating a system where he could change the heat either with work or with external heat sources. e. By heating a gram of water by one degree.
A particle (charge 7.5 ?C) is released from rest at a point on the x axis, x = 10 cm. It begins to move due to the presence of a 2.0-?C charge which remains fixed at the origin. What is the kinetic energy of the particle at the instant it passes the point x = 1.0 m?
a. 3.0 J b. 1.8 J c. 2.4 J d. 1.2 J e. 1.4 J
If a sunspot has a temperature of 4,500 K and the surrounding solar surface has a temperature of 5,800 K, how many times brighter is the surface compared to the sunspot?
a. 0.28 b. 0.36 c. 2.8 d. 3.6 e. 36
A type of transmission line for electromagnetic waves consists of two parallel conducting plates (assumed infinite in width) separated by a distance a
Each plate carries the same uniform surface current density of 16.0 A/m, but the currents run in opposite directions. What is the magnitude of the magnetic field between the plates at a point 1.00 mm from one of the plates if a = 0.800 cm? (?0 = 4? × 10-7 T ? m/A) A) 3.20 × 10-3 T B) 1.00 × 10-5 T C) 4.63 × 10-5 T D) 2.01 × 10-5 T E) 7.07 × 10-4 T