Physics Answers

An object moving at 13 m/s slows uniformly with an acceleration of 2.0 m/s2

for a time of 6.0s. Determine a) its final velocity and b) the distance moved in the 6.0 s.

Two point charges are placed as follows: charge q1 = -1.50 nC is at y = +6.00 m and charge

q2 = +3.20 nC is at the origin. What is the total force (magnitude and direction) exerted by

these two charges on a negative point charge q3 = -5.00 nC located at (2.00 m, -4.00 m)?

A railway truck of 100kg mass traveling with a velocity of 7ms^-1collides with a second truck of 200kg mass and the two couple automatically and move off together. Calculate the velocity of the coupled trucks and the energy lost to the system; if the second truck has a speed of 5ms^-1(a) in the same direction, (b) in the opposite direction and (c) is initially stationary.

An electron and a positron are moving side by side in the +x direction at 0.500c when they annihilate each other . Two photons are produced that moves along the x axis (a) Do both photons move in the +x direction ? (b) What is the energy of each photon

120 ͦC to ͦF

With Solution pls thank you so much

Find the electric field midway between a 2-uC point charge which are 2.5 m apart

The average angular acceleration of a stone lodged in a rotating car wheel is 100 rads .What will the stone’s final angular speed be after 3.0 s, if it starts

From rest? Also calculate its angular displacement during this time.

A satellite of mass 200 kg is displaced by a distance of

2RE

from a point on the

Earth’s surface, where

RE

is the radius of the Earth. Calculate the work done on

the satellite by the force of gravitation. Take the values of the constants in your

calculation from the astrophysical data given in the course