Q.5 An external force of magnitude F = 5N is applied
vertically downward on an object
of 10 N weight resting on
horizontal surface. The magnitude
of the normal force ñ exerted by
the ground on this object is:
a
mg
(a)n = 5N
(b) n = 17 N
(c) n = 15 N
(d) n = ON

What is the fate of the electrons that interact with a specimen in an electron microscope?

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?