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An electron moves across Earth's equator at a speed of 2.5 x 106 m/s and in a direction 35o N of E. At this point, Earth's magnetic field has a direction due north, is parallel to the surface, and has a magnitude of 0.10 x 10-4 T. What is the force acting on the electron due to its interaction with Earth's magnetic field?
Determine what velocity would a proton need to circle Earth 1500 kilometer above the magnetic equator
A positive charge ball hangs, attached to a thread of negligiblemass. Similarly a negative charged ball hangs attached to athread of negligible mass. Each ball has mass of 0.14g and amagnitude charge of q. Attracted to each other, each of theirthr..
A sound wave propagating in air has a frequency of 4.45 kHz. Estimate the change in wavelength when the wave, initially traveling in a region where T = 27°C, enters a region where T = 11.5°C
A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead the pipe's diameter is 56.1 cm and the flow speed of the petroleum is 13.1 m/s. what is the pipe's diameter at the refinery
in a cloud chamber experiment a proton enters a uniform 0.250 t magnetic field directed perpendiular to its motion. you
Two 4.0 X 4.0 square aluminum electrodes, spaced 0.80 apart are connected to a 100battery. What is the charge on the positive electrode
A fishing boat is drifting just above a school of tuna on a foggy day. Without warning, an engine backfire occurs on another boat 1.40 km away. How much time elapses between the instant when the backfire is heard by the fish?
A refracting telescope has an angular magnification of -90.00. The length of the barrel is 1.800 m. What are the focal lengths of (a) the objective and (b) the eyepiece?
Two 2.1-cm-diameter electrodes with a 0.10-mm-thick sheet of Teflon between them are attached to a 9.0 V battery, What is the charge before the Teflon is removed
A squirrel is resting in a tall tree when it slips from a branch that is 44 m above the ground. What is the height of the branch it lands on
A magnetic field is perpendicular to the plane of a single-turncircular coil. The magnitude of the field is changing, so that anemf of 0.82 V and a current of3.0 A are induced in the coil.
A 7130-kg car is travelling at 32.7 m/s when the driver decides to exit the freeway by going up a ramp. After coasting 369 m along the exit ramp the car\'s speed is 13.5 m/s, and it is h = 11.9 m above the freeway. What is the magnitude of the averag..
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