Ex1) Charge is uniformly distributed along the entire x axis. if each 20 cm of the x axis carries 2 n c of charge. What is the magnitude of
the electric field at the point, y=2 m on the y axis ?
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Aroller coaster car moving at a velocity of 30 meters/second has a momentum of 2.5 x 10^4 kilogram meters/second. what is its mass?

Hydrogen and helium are both members of?

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.