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describe the process of nuclear fission

a neutron is absorbed by a big nucleusthe nucleus then splits into 2 smaller nucleithis releases energy and more neutrons
AP
Answered by Abigail P. • Physics tutor
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In a circuit with a thermistor and bulb, what happens to the brightness of the bulb as the temperature increases?

As the temperature increases, the resistance of the thermistor decreases. So the resistance of the whole circuit decreases. Using V=IR, the PD remains constant but resistance has decreased, so current must i...
Answered by • Physics tutor
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If a stationary observer sees a ship moving relativistically (near the speed of light), will it appear contracted or enlarged? And by how much.

Einstein's theory of special relativity postulates two theories; firstly the speed of light is a universal constant, and secondly the laws of physics are the same in all inertial (non-accelerating) reference...
TH
Answered by Thomas H. • Physics tutor
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Explain why the stability of a car can be improved by widening the wheel base and lowering the centre of gravity.

A car will topple over when it is tilted so far that the line of action from the centre of gravity falls outside of the wheel base, causing a resultant moment around the side being tilted. Extending the base...
TH
Answered by Tim H. • Physics tutor
2662 Views

A ball of mass m with initial velocity u rebounds from a wall, with final velocity v. Using Newton's laws of motion explain forces acting in the system.

The ball has initial momentum p 1 = mu, and final momentum p 2 =vm. According to the Newton's 2nd law of motion a force exerted on the ball is equal to the rate of change of momentum . It is thus:F = ( p 2 -...
MM
Answered by Maks M. • Physics tutor
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