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A cosmic ray electron moves at 7.85 multiplied by 106 m/s perpendicular to the earth's magnetic field at an altitude where field strength is 1.10 multiplied by 10-5 T. What is the radius of the circular path the electron follows?
m
What is the lift (in newtons) because of Bernoulli's principle on a wing of area 78m^2 if the air passes over the top and bottom surfaces at speeds of 260m/s and 150 m/s, respectively.
A standing wave in a pipe with both ends open has a frequency of 206. Hz. The next higher harmonic has a frequency of 309. Hz. How long is the pipe
A section of hollow pipe and a solid cylinder have the same radius and mass. Which has the most rotational kinetic energy
As a rocket passes the earth at 0.75c, it fires a laser perpendicular to its direction of travel, What is the speed of the laser beam relative to the earth
Resistance are 10N per 1000 for the engine 5N per 1000kg for the trailer. So what's the forward thrust exerted by the engine?
What are the velocities of the two people after the snowball is exchanged? Disregard friction between skate and the ice.
What is the effective spring constant (that is, the ratio of force to change in length) of a copper cable that is 7.0 in diameter and 13 long?
A 1,200 kg car going 25 m/s is brought to stop using its brakes. Let's assume that a total of approximately 20 kg of iron in the brakes, What was the car's original kinetic energy
A commonly used method of fastening one part to another part is called "shrink fitting." A steel rod has a diameter of 2.0023 cm, By how many Celsius degrees should the rod be cooled
Problem on a hare and a tortoise battle
a 2.0 nc charge is placed on the x-axis at x=-3.0cm another 2.0nc charge is placed on the x-axis at x=3.0cm, What is the potential at the origin
Find density of the object
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