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An electron is traveling at 1.9x10 m/s when it enters an electric field that slows it. The field has a mag nitude of 6200 N/C. How far does the electron penetrate the field before it stops.
The spring has a spring constant of 1000 N/m. It is compressed 15 cm, then launches a 200 g block. The horizontal surface is frictionless, but the block's coefficient of kinetic friction on the incline is 0.20. What distance d does the block sail through the air?
A beam of light enters water at an angle of 60 degrees relative to the normal of the water surface . Find the angle of refraction?
Light passes from air into water . If the angle of refraction is 20° ,what is the index of refraction of the plastic?
The angle of incidence of a light ray on a mirror surface is 35 degrees. What is the angle between the incident and reflected rays?
A beam of light is incident on a plane mirror at an angle of 32 degrees relative to the normal line. What is the angle between reflected rays and the surface mirrors?
You pull a box using a rope, which is directed 30 degrees above the horizontal. You apply a constant force of 30 N, and you move the box 5 m along the ground. What work did you do in Joules?
momentum is conserved in a collision of two objects as measured by an observer on a uniformly moving train. show that momentum is also conserved for a ground observed
a. What is the net electric flux through the surface is it encloses a net charge of 3.60μC?
b. The electric flux through a closed surface is found to be 7.80Nm2
/C. What quantity
of charge is closed by the surface?
A disk of radius 1.20cm. It has a charged of -6.0nC spread uniformly over the said
disk. Find the magnitude and direction of the electric field this disk produces at point A on
the axis of the disk a distance of 2.0cm from its center
A 10.0cm long thin glass rod is uniformly charged to +50.0nC. A small bead, charged
-5.0nC is 4.0cm from the center of the rod. What is the force (both magnitude and direction)
on the bead?
Three charges lie along the x-axis. The positive charge q1 = 15.0μC is at x = 2.00m and
the positive charge q2 = 6.00μC is at the origin. Where must a negative charge q3 be placed on
the x-axis such that the resultant force on it is zero?
