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A velocity selector is connected to a mass spectrometer. The electric field in the velocity selector is 950 V/m. Calculate the radius of the path of a proton in a mass spectrometer if it experiences a magnetic field of 0.93 T throughout.
A clock face has negative point charges -q, -2q, -3q, · · · , -12q fixed at the positions of the corresponding numerals. The clock hands do not perturb the net field due to the point charges
A golf ball of mass 0.045 kg is hit off the tee at a speed of 33m/s. Find the average force exerted on the ball by the golf club
question1a photographer in a helicopter ascending vertically at a constant rate of 12.5 ms accidentally drops a camera
A 20.0-N block rests on a horizontal surface. The coefficients of static and kinetic friction between the surface, What is the force of friction acting on the block
A movie camera with a (single) lens of focal length 70 mm takes a picture of a person standing 28 m away. what is the height of the image in millimeters on the film
A patient is going to be prescribed bifocals which will be 3.20 cm from the eye, Without the bifocals, what is the patient's near point
find the potential difference across the capacitor. A conductor consists of a circular loop of radius R and two straight, long sections. The wire lies in the plane of the paper and carries a current I.
A 95-{rm m}-long train begins uniform acceleration from rest. The front of the train has a speed of 25 {rm m/s} when it passes a railway worker who is standing 120m from where the front of the train started. What would be the speed of last car as ..
Determine the magnitude of force F in cable AB in order to produce a moment of 500 ft lbs about the hinged axis CD
How to find the magnetic field
A certain black body radiates 1200 W at a temperature of 2000 K. how much power does this body radiate at 3000 K
An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 3.6 cubic meters of sea water. What is the buoyant force acting on the object
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