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In a certain region, the earth's magnetic field has a magnitude of 4.7e-5T and is directed north at an angle of 61* below the horizontal. An electrically charged bullet is fired North and 15* above the horizontal, with a speed of 640m/s. The magnetic force on the bullet is 3.6e-10N, directed due east. Determine the bullet's electric charge(q), including its algebraic sign(+/-).
Consider a simple model for the interior of the Earth: there is a spherical iron core with constant mass density ?0 and radius a; outside the core is "rock" with constant density ?1. Calculate the radius a of the iron core
A 100-kg halfback running north with a speed of 12 m/s is tackled by a 110-kg opponent running south with a speed of 4.0 m/s. If collision is completely inelastic and head-on, compute the speed of the players just after the tackle.
a point dipole P is imbedded at the center of asphere of linear dielectric material (with radius R and dielectricer ). find the electric potential inside and outside the sphere
the girl(mass 40kg) is pulling the sled(mass 10Kg) on the frictionless ice. what is the acceleration of the girl
A very long, straight solenoid with a cross-sectional area of 6.15 is wound with 30 turns of wire per centimeter, compute the average induced emf in the secondary coil
What is the ratio of the intensity of an earthquake wave as itpasses a point 20 km from the source tothe intensity as it passes a point 12 kmfrom the source?
Four gram-moles of an ideal monatomic gas initially at temperature 300 K is compressed adiabatically from a volume of 1200 cm3 to a volume of 350 cm3. How much heat was transferred to the gas
A bus with a vertical windshield moves along in a rainstorm at speed V relative to the ground. At what angle do the raindrops strike the windshield
An object glides on a horizontal tabletop with a coefficient of kinetic friction of 0.45. If its initial velocity is 5.5 m/s, how long does it take for the object to come to rest
The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. The turns ratio of the transformer is 45:1. Find the power consumed by the air filter
The particles in the figure below (m1 = 1.8 kg and m2 = 3.5 kg) undergo an elastic collision in one dimension. Find the velocities of the two particles after the collision
A particle known as a pion lives for a short time before breaking apart into other particles. What is the lifetime according to a hypothetical person who is riding along with the pion
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