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What happens to a cosmic-ray proton flying into the Earth's atmosphere at a speed of about 107 m/s? The magnitude of the Earth's B field is approximately 5 X 10-5 T. The mass m of a proton is approximately 10-27 kg. Consider three cases: The proton enters the Earth's atmosphere parallel to the Bb vector field, perpendicular to the field, and at a 30o angle.
two insulated charge cu spheres a and b of identical size have charge qa and -3qa when they are brought in contact with
A 15-kg iron ball is dropped onto a pavement from a height of 80m. Suppose half of the heat generated goes into warming the ball. What is the temperature increase of the ball in degree C
Two rocks are thrown off the edge of a cliff that is 15.0 m above the ground. The first rock is thrown upward, at a velocity of +12.0 m/s. determine at what velocity it hits
a VW bug hits a huge truck head on. each vehicle was initially going 50 MPH. which vehicle experience the greater force
An iron wire with a diameter of 1.2 mm has a uniform electric field of 0.35 V/m imposed along its entire length. What is the current density in the wire
A cylinder of a car's enginehas a volume of .725 L when the piston is at the bottom of the cylinder.When the piston is at the top of the cylinder it has a volume of 0.050 L.If the cylinder is filled with air at a pressure of 1 atm when the pistonis a..
At a given instant, the blood pressure in the heart is 1.50 104 Pa. If an artery in the brain is 0.43 m above the heart, what is the pressure in the artery
An x-ray photon of 0.13 nm strikes a metal and undergoes Compton scattering of the electrons in the metal. What is the momentum of the incident photon
A block of mass 0.540 kilogram is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x. Find what speed do you predict for the block at the top of the track
A 22 kg brick is completely submerged insaltwater and displaces an amount of saltwater weighing 11.7 N. Determine the buoyant force on the brick
A 21.0 kilogram child on a 3.00 meter long swing is released from rest when the ropes of the swing make an angle of 26.0 degree with the vertical. determine the child's speed at the lowest position
A 0.69 book slides on a horizontal table. The kinetic friction force on the book has magnitude 1.2. How much work is done on the book by friction during a displacement of 2.7 to the left
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