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An electron enters a region of space containing a uniform 0.0000125-T magnetic field. Its speed is 195 m/s and it enters perpendicularly to the field. As you know, the electron undergoes circular motion under these conditions.
Find the radius of the electron\'s orbit, r, and the frequency of the motion, f.
The given pair of capacitors in the figure below is fully charged by a 10.0-V battery. After 1.20 ms, what is the current in the resistor
A ball thrown upward returns to the same level after 4s in the air. How long would that ball take to reach the same level
In a movie, a person is supposed to jump with a motorcycle from the roof of one skyscraper to another one. what minimum initial speed would she need to make the jump
An earthquake strikes a small college and shakes all of the books off the shelves. About how much money will this cost the library
question1a rocket with mass m is fired vertically upward. at an instant it reaches an altitude of 800m and a speed of
A-3.18. A B-2A is flying at 43,000 ft in standard day conditions at 400 KTAS. The mean chord length is 39.6 ft. Find the overall or total Reynolds number for the aircraft
a test charge of +3x10-7 C is located 5cm to the right of a charge of -4x10-6 C and 10 cm to the left of a charge of -1x10-6 C.the three charges lie on a straight line. find the force on the test charge
An eagle can determine that two light brown shrews sitting 1.0 cm apart on a pathway 125 m below her are in fact two shrews rather than a small rat. estimate the diameter of her pupil
There are approximately 120 million TVs in the United States. Each uses, on average, 75 W of power, how much money is spent every day in keeping the TVs turned on
Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 8.30 cm-3 and their speed is about 460 km/s. Find the current density of these protons
You are traveling in a car toward a hill at a speed of 36.4 mph. The car's horn emits sound waves of frequency 231 Hz, Determine the frequency with which the waves strike the hill
A goldfish bowl is spherical, 8 cm in radius. A goldfish is swimming 3.0 cm from the wall of the bowl. Where does the fish appear to be to an observer outside
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