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An electron moving perpendicular to a uniform magnetic field of 0.22 T moves in a circle with a speed of 1.5x107 m/s. What is the radius of the circle? (e=1.6x10-19 C, melectron= 9.11x10-31 kg)
falling from the suface of the earth through its center to the other surface of the other side. 1 how many hrs will it
Find a unit vector normal to both vectors A = 4a x - 3a y + a z and B = 2a x + a y - a z .
one mole of hydrogen one mole of nitrogen and one mole if oxygen are held in a 22.4*10^3 cm^3 enclosed vessel at 20C find the pressure in vessel
a wire along the z-axis carries a current of 6.2 a in the z direction. find the magnitude and direction of the force
A pop star of your choosing is in a 'tube' of a human sized centrifuge. the radius of this centrifuge is 10m. humans will turn into 'goo' at 50g's. how many times a min will the centrifuge rotate so the pop star is turned into a liquid?
The heating element of an electric broiler dissipates 2.8 kW of power when connected to a potential difference of 120 V. what is the resistance of the element?
What is the minimum (non-zero) thickness for the air layerbetween two flat glass surfaces if the glass is to appear dark when700 nm light is incident normally? What if the glass is to appear bright
How many rulings should a 4.0cm wide diffraction grating have to resolve the wavelengths 415.496 nm and 415.487 nm in the secondoreder? At what angle is maximum intensity found?
A small block sits on the top of a fixed frictionlesshemisphere of radius R = 9 meters. If the block is given ainitial horizontal velocity of v = 7 m/s. determine the speed of the block at this point
You pull downward with a force of 32 N} on a rope that passes over a disk-shaped pulley of mass 1.2 kg and radius 0.07 5m. Find the linear acceleration of the 0.61 kg mass.
A 10.0-uF capacitor, a 40.0-uF capacitor, and a 100.0-uF capacitor are connected in parallel across a 12.0v battery. what is the equivalent capacitance of the combination
How much work must be done to bring threeelectrons from a great distance apart to6.0×10−10m from one another (at the cornersof an equilateral triangle)?
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