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Physics
A Level

A positively charged particle enters a magnetic field oriented perpendicular to its direction of motion. Does the particle: A) Change its velocity, B) Change its speed, C) Accelerate in the direction of the magnetic field.

To answer this question you must use the magnetic field "Right Hand Rule". We know that if a charged particle enters a magnetic field it will experience a force ​perpendicular to both​ ...

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Answered by Sam H. Physics tutor
15792 Views

What does a negative velocity mean?

To understand this question, it is important to know that velocity has both a direction and a magnitude. The magnitude can be expressed by the unit m/s, however the direction is expressed by a vector. ...

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Answered by Thomas D. Physics tutor
32919 Views

A particle that moves uniformly in a circular path is accelerating yet moving at a constant speed. Explain this statement.

Acceleration is a change in velocity over time. Velocity is different to speed, because it has a direction (for example a car moving at 10 mph along a road heading north will have a greater ve...

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Answered by Anna L. Physics tutor
16194 Views

A model truck A of mass 1.2 kg is travelling due west with a speed of 0.90 m/s . A second truck B of mass 4.0 kg is travelling due east towards A with a speed of 0.35 m/s .

a)  Calculate the magnitude of the total momentum of the trucks. 

The momentum (p) is the mass (m) of an object multiplied by its velocity (v). 

p = m x v

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Answered by Anna L. Physics tutor
15415 Views

What is meant by the binding energy of a nucleus?

The binding energy of a nucleus is the energy that would be required to split the nucleus into it's constituent nucleons.

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Answered by Anuradha D. Physics tutor
3958 Views

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