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Physics
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Particle A (60kg) moves right at 50m/s. It collides with particle B (250kg) moving left at 10m/s. If after the collision particle A moves left at 20m/s, calculate the final velocity of particle B

First the total initial momentum of the particle system is calculated. Treat right as the positive x-direction and left as the negative x-direction. Then:Total initial momentum (Pi) = Inital momentum of A...

OL
Answered by Oliver L. Physics tutor
1925 Views

A body with speed v is projected from the surface of the earth(mass M & radius R). Find the maximum distance from the earth that this body reaches before returning back to earth, as a function of the initial speed v, M, R and the gravitational constant G

This question tests the students' understanding on conservation of energy, gravitational potential and algebraic manipulation.The first step is identifying that the principle to use is the conservation of...

CV
1735 Views

People A and B are taking a lift of mass 500 kg which has constant acceleration and the force from the rope that pulls it is 7500 N. The scales where the people stand show a reading of 720 N and 500 N.

Question 1 : Find the acceleration of the lift.Implementing Newton's Second Law we have : F net =Mα lift --->T-F A -F B -Mg =...

GN
Answered by Geri N. Physics tutor
1980 Views

Coal is a non-renewable energy resource. Name two other non-renewable energy resources.

oil and gas

KY
Answered by Kieran Y. Physics tutor
2497 Views

Electrons moving in a beam have the same de Broglie wavelength as protons moving in a separate beam. The proton beam moves at a speed of 3.1 x 10^4 m/s. What is the speed of the electrons?

From the data sheet, the de Broglie wavelength, 𝜆 = h/p = h/(mv)
The electron wavelength equals the proton wavelength so: 𝜆e = 𝜆p
So:

AG
Answered by Alexandra G. Physics tutor
3044 Views

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