Physics Answers

A graph of position versus time for a certain particle moving along the x axis is shown in the figure below. Find the average velocity in the following time intervals. (The horizontal axis is marked in increments of 5 s and the vertical axis is marked in increments of 5 m.)

if in the process of rubbing the lenses of the eyeglasses, 6.28 x 10¹⁰ electrons were tranferred.

A. What is the charge of the lenses and the nylon cloth?

B. What is the change in their masses?

a, b, and c have units of meters, s = a, what is [s] ?

a, b, and c have units of meters, s = a + b, what is [s] ?

a, b, and c have units of meters, s = (2a + b)b, what is [s] ?

a, b, and c have units of meters, s = (a + b) 3/c, what is [s] ?

a, b, and c have units of meters, s = (3a + 4b) 1/2/9c2, what is [s] ?

a, b, and c have units of meters, s = a, what is [s] ?

The rest mass of an electron is 9.1 x

10^-31 kg. What is the relativistic mass if its velocity is 55 % of the speed

of light?

Three laws of motions

Finn and Jake saw a carousel-a horizontal rotating platform- with radiuse when they decided to ride with it. As they accelerate, the movement of the carousel is at constant speed unit it has reached an angular velocity after 2 complete revolutions. What is the angular acceleration of the carousel during this time?

2. A ship sails 10 miles northward and then 15 miles east ward. How far is it from the starting point?

The volume of a gas increases from 3Litres to 9Litres at a constant pressure of 4atm. Next,heat is added to increase the pressure to 10atm at constant finally heat is removed to decrease the pressure and volume back to the original values in a straight line path.

(a) Draw a PV-diagram

(b) Calculate the total workdone in this process.

Leave your answer in joules

How far does the electron of a hydrogen atom have to be moved from the nucleus for the force of attraction in the electron to equal the weight at the earth surface. Mass of earth, proton and nucleus are given. Also given are charge of an electron, proton. Mass of neutron is given as 0