Field Theory Answers

A proton and an electron form two corners of an equilateral triangle with sides of length 3

µm. What is the magnitude of their net electric field at the third corner?

A charge of +3µC is distributed along a rod which on the x-axis extending from x=1m to

4m. a) What is the linear charge density of the rod? b) Find the electric field at the origin due to the charged rod.

Two charges are placed on the x-axis. A charge q1= 6µC is placed at x=3cm and charge

q2=-12µC charge is placed at x=5cm. a) Determine the magnitude and direction of the force

on the q1. b) Determine the magnitude and direction of the electric field at the origin.

During a cricket match a cricket ball is hit with an initial velocity of 45.0 m s^-1 at an angle of 30.0^o to the horizontal from a height of 1.10 m above the ground. It lands in the spectators' balcony which is 8.50 m above the ground. 

Calculate the horizontal and vertical components of the cricket ball’s initial velocity.

If two block with masses 5kg and4kg connected by a string are placed on a horizontal table and are pulled by a force of 30N calculate the tension in the string if frictional force is negligible.Repeat the problem if the coefficient of kinetic friction between the blocks an the table is 0.3N

A vehicle of mass 550 kg moves at a speed of 16.5 m.s⁻¹ on a circular path of radius 71.0 m. Calculate the magnitude of the centripetal force required to keep the vehicle on this trajectory in N and round to the nearest whole number of Newtons.

A wave represented by y= (3.00m) sin (2.5t-3.14x). Find the (a) amplitude, (b) angular frequency, (c) frequency, (d) wave number, (e) wavelength, and (f) speed of the wave

On the x axis there are point charges 3μC and 5μC located at the positions x=-2cm and x=3cm respectively. Find the direction and magnitude of the electric field at the origin.

A point charge of -10µC is located at x=-4cm. Find the magnitude and direction of the Electric field at the origin.

Two charges are on the x axis: A −16μC charge is at the origin and a 4μC charge is at x = 2cm. Find the magnitude and direction of the electric field at the point P, which is 3cm along the +x axis.