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An electron passes during a magnetic field at right angles to the field at a velocity of 4.0 x 106 m/s. The strength of the magnetic field is 0.50 T. What is the magnitude of the force acting on the electron?
In 2000, NASA placed a satellite in orbit around an asteroid.Consider a spherical asteroid with a mass of 7.00×1015 kg and a radiusof 8.80 km, What is the escape speed from the asteroid
One side of the roof of a building slopes up at 34.0°. A student throws a Frisbee onto the roof. It strikes with a speed of 15.0 m/s and does not bounce, but slides straight up incline. The coefficient of kinetic friction between plastic and roof is ..
A sphere with mass 0.3 kg and radius 0.05 cm is rolling without slipping along a horizontal surface at a speed of 10 m/s. What height does the sphere come to rest
A rifle bullet of mass 8.6 g is fired into a 1.23 kg block where it becomes embedded. what was the initial speed of the bullet
A string 3 meters long has a mass of 2 grams. one end of the string is attached to a wall, what is the speed of a transverse wave in this string
When a particle is at the origin, it has a velocity given by vo = (12i + 15j)ms-1. How long does it take the particle to hit the y-axis
An inductor is to be made by wrapping wires around a paper tube of radius 0.702 cm and length 8.44 cm. How many turns will give the inductor an inductance of 4.000e-3 H?
Copper has 8.5×1028 electrons per cubic meter. How many electrons are there in a 25.0 cm length of 12-gauge copper wire, what is the average drift speed of the electrons along the wire
A cluster of galaxies has a radius of about 5.2 million light-years (4.9×10^22) and an intracluster medium with a temperature of (6.5×10^7) K. Estimate the mass of the cluster. Give the answer in both kilograms and solar masses. Suppose combined l..
Jonathan is riding a bicycle and encounters a hill of height h. What is the total external work done on the system of Jonathan and the bicycle between the time he starts up the hill and the time he reaches the top
what is the force per meter on a lightning bolt at the equator that carries 20,000 amps perpendicular to the earths's 3.00 x 10^3 T field
A 10.0 kg mass is placed on a 25.0 degree incline and frictionkeeps it from sliding. What is the frictional force in this situation
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