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Question1
Protons and electrons can be given extremely high energies in particle accelerators. What is wavelength in meters of an electron (mass = 9.11 x 10-31 kg) that has been accelerated to 99 percent of speed of light? In what region of the electromagnetic spectrum is this wavelength?
Question2
Two equal positive point charges q1=q2=2.0C are located at x=0,y=0.30m and x=0,y=-0.30m, respectively. What are magnitude and direction of the total (net) electric force that these charges exert on a third point charge Q=4.0C at x=6,y=8?
Question3
A layer of benzene (n = 1.50) 2.60 cm deep floats on water (n = 1.33) that is 6.50 cm deep. What is the apparent distance from the upper benzene surface to bottom of the water layer when it is viewed at normal incidence?
1) 3.45 cm
2) 6.62 cm
3) 66.2 cm
4) 345 cm
5) 662 cm
A dockworker applies a constant horizontal force of 84.0\({\rm N}\) to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 12.5\({\rm m}\) in a time 4.80\({\rm s}\)
What is final speed of the block
What is ratio of the applied force
What is speed of the wind what is coefficient of static friction
Different values of the energy
How long can craft hover over the moon surface Contract between Einstein's calculations and observed precession
A resistor is in the shape of a cube, with each side of resistance R . Find the equivalent resistance between any two of its adjacent corners.
What is distance of a sample of blood from the rotation axis
What is maximal speed v of the elevator
The latent heat of fusion
The incident electron loses energy The incident electron emits an x-ray.
Quadrupole moments in the shell model
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