What velocity would a proton need to circle
What velocity would a proton need to circle the Earth 1100 km above the magnetic equator, where the Earth's magnetic field is directed horizontally north and has a magnitude of 4.00 10-8 T?
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A crate (140 kg) is in an elevator traveling upward and slowing down at 6 m/s2. Find the normal force exerted on the crate by the elevator. Assume g = 10 m/s2.
A 1140-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam. Using the data shown in the figure, find (a) the magnitude of the tension in the wire
An electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of 4.00 mT. The angular momentum of the electron about the center of the circle is 5.50 10-25 J·s.
What kinds of emotions and feelings did you experience during radical change in your life? Was there stress associated with the change?
A small piece of dust of mass m = 1.5 µg travels through an electric air cleaner in which the electric field is 600 N/C. The electric force on the dust particle is equal to the weight of the particle.
What is the apparent weight of a 75 KG astronaut 4200 km from the center of the earth's moon in a space vehicle.a) moving at constant velocity, and b) accelerating toward the moon at 2.9 m/s^2? state the direction in each case.
Imagine that a sample of sediments are cemented together to form a sedimentary rock. Then, that rock is heated and compressed into a metamorphic rock. The metamorphic rock is then melted to form an igneous rock. Which of the following statemen
A thermos contains 150 cm3 of coffee at 85° C. To cool the coffee, you drop two 10-g ice cubes into the thermos. The ice cubes are initially at 0° C and melt completely. What is the final temperature of the coffee? Treat the coffee as if i
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