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How do I use the conservation of linear momentum to solve problems?

The linear momentum of a particle is defined as the product between the particle’s velocity (a vector) and the particle’s mass (a scalar quantity): p =m· v . The law of conservation of momentum states that t...
EC
Answered by Ellis C. • Physics tutor
3477 Views

How does refraction work?

The fastest light can travel is when it is in a vacuum, where it travels at 3x10^8 metres per second. However, when light travels through another substance or material (another 'medium'), it gets slowed down...
CP
Answered by Conor P. • Physics tutor
12789 Views

How do I use equations of motion ('suvat') to find a missing quantity?

First, be familiar with the equations of motion:s = displacementu = initial velocityv = final velocitya = acceleration (constant)t = time v = u + ats = ((u+v)t)/2s = ut + (at^2)/2v^2 = u^2 + 2as Second, iden...
JH
Answered by Jessica H. • Physics tutor
4238 Views

why does applying the brakes of a car cause the temperature of the breaks to increase?

The increase in heat is caused by friction between the brakes and the wheels. This work done between the brakes and the wheels, causes a decrease in kinetic energy in the wheels, resulting in an increase in ...
HH
Answered by Hugo H. • Physics tutor
16256 Views

What path would a charge moving in the x-y plane track, in the presence of a uniform magnetic field out of the page?

The magnetic force on a moving charge is always perpendicular to the directions of both velocity and B-field vectors. This means that in the presence of a uniform magnetic field, a particle will experience a...
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Answered by Arsenios H. • Physics tutor
2270 Views