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A velocity selector has its electric field directed vertically downward, with magnitude 130N/C .
a) Find the magnitude of the horizontal magnetic field required to select charged particles moving at 350m/s.
b) This velocity selector is being used on protons. Compute explicitly the magnitude of the electric force.
c) Compute explicitly the magnitude of the magnetic force. Express your answers to two significant figures and include the appropriate units.
If one shines a laser with wavelength = 650 nm through a single slit of width a = 0.04 mm, How far apart are the minima
Let's say you have a prescription for contacts of -2 diopters. Estimate how far you will be able to focus
An object undergoing simple harmonic motion takes 0.34 s to travel from one point of zero velocity to the next such point. The distance between those points is 40 cm. Calculate the frequency of the motion
A telescope can be used as a camera if the film is placed at the image position of the objective lens (or mirror); what is the angular separation of the two stars
A rabbit runs in a straight line with a velocity of +1.4 m/s for a period of time, rests for 12 s, what is the total time rabbit spends running at 1.4 m/s
What will most likely cause arcing at the switch contacts.
A weight lifter raises a 972 N weight a vertical distance of 1.87 m. Compute the work done by the force exerted on the weight by the weight lifter
Supporting his theory, since 2001, workers in the United States have enhancement their hours worked while tax rates have dropped. What theory or theories of motivation might describe such a change.
A panicular spring has a spring constant of 86 N/m and a mass of 0.548 kg at its end. When the spring is driven in a viscous medium, the resonant motion occurs at an angular frequency of 12.2 rad/s.
A 1.50*10^3-kg car starts from rest and accelerates uniformly to 19.1 m/s in 12.0 s. Find the instantaneous power output of the engine at t = 12.0 s, just before the car stops accelerating
A large spool in an electrician's workshop has 80 m of insulation-coated wire coiled around it. What is the length of wire remaining on the spool
A basketball player makes a jump shot. The 0.600 kg ball is released at a height of1.90 m above the floor with a speed of7.00 m/s. What is the work done on the ball by air resistance
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