Physics Answers

1. Compute for the amount of charge (q) of a 15 V battery with -45 J potential energy
2. A metal sphere has 5x10^-9C static charge. Compute the voltage if the radius is equal to 0.05m. (k=8.99 x 10^9 N.m^2/C^2
3. Find the Total capacitance of the three given capacitors in series connection, given their individual capacitances, 4.0 μF, 15.0 μF.
4. Find the net capacitance of the three given capacitors connected in parallel, given their individual capacitances, 2.0 μF, 5.0, μF, 8.0 μF.
5. A parallel plate capacitor was placed 0.002 m apart. Compute for the capacitance if the area each plate is equal to 0.025 m^2. (ε0 = 8.85x10^-12 F/m)

with computations :) thank you

A charge of 6µC exerts a force of 2.4 x 10-4 N in the right side of a positive test charge. What is the magnitude and direction of the electric field at the location of the test charge?

When a nylon cloth is rubbed with eyeglasses, the eyeglasses acquire a charge of 10 nC.

How many electrons were transferred during the process?

Two charges repel each other with a force of when they are 10cm apart. When they are brought closer together to 2cm apart, the force between them becomes

Calculate the force required to accelerate the at a rate of 1.2m/s2

3d^2y/dx^2+dy/dx-14y=0 ; y=(0) ,y'=(0)=-1

In a rectangular coordinate system a positive point charge q = +6.00 nC is placed at point x = +1.50 m, y = 0 m, and an identical charge is placed at x = -1.50 m, y = 0 m, Find the x- and y-components, the magnitude, and the direction of the electric field at x = 0, y = 0.200 m.

A body starts from rest and moves with a uniform acceleration of 2 m/s 2 in a

straight line.

a) What is the velocity after 5 s

b) How far has it travelled in this time?

c) When will it be 100m from its starting point?

A car accelerates from 4 m/s to 20 m/s in 8 s. How far does it travel in this time?

Differentiate between scalar and vector quantities.

Two forces of 5N and 12N act at right angles at the same point on an object. Find

by scale drawing and calculation the resultant force which is equal in magnitude

and direction to the combined effect of the two forces.

Using a scale of 1 cm to represent 10 N find the size and direction of the resultant

of forces of 30 N and 40 N acting at: a) right angles to each other, b) 60 0 to each

other.

Two equally charged particles are held 3.2×10-3 m apart and then released from rest. The initial acceleration of the first particle is observed to be 7.0 m/s2 and that of the second to be 9.0 m/s2. If the mass of the first particle is 6.3 x l0-7 kg, what are (a) the mass of the second particle and (b) the magnitude of the charge of each particle

Sarah (m=81.2 kg) is traveling at a speed of 18.1 m/s at the top of a 11.5 m high roller coaster loop. Determine Sarah's speed at the bottom of the loop. Include a diagram