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Explain the different sources of background radiation

Some of these sources are man made although the main source is from the environment. Radon gas from rocks and cosmic rays from the sun are the main enviromental sources. For man made sources, the main source...
JC
Answered by Jackson C. • Physics tutor
2344 Views

If Newton's 3rd law is true (all actions have an equal and opposite reaction), then how can any object move?

(Using diagrams to aid explention)This is a common difficulty students with Newton's third law, because in isolation it makes sense; If i am pushing a cart, and the cart imparts an equal amount of force on m...
JW
Answered by James W. • Physics tutor
1905 Views

Briefly outline how a skydiver reaches terminal velocity.

This question is relating to the balancing of forces on a moving object. The force on the skydiver will be equal to its weight multiplied by its acceleration (the acceleration will be equal to 9.8m/s/s - acc...
WB
Answered by William B. • Physics tutor
2980 Views

Calculate how much charge flows through a circuit with 6.0A of current in seven minutes?

It is important to understand that Q=It and therefore by rearranging the equation we know that 1 amp means one coulomb of charge passing through a point every second in the circuit. Therefore we multiply our...
IP
Answered by Ishaan P. • Physics tutor
3446 Views

Calculate the charge that flows past a point in a circuit with a 5.0A current for five minutes.

A coulomb the amount of charge that passes in 1 second when the current is 1 ampere.Q = It t = 5 x 60 = 300 (s) we must use Si units in physics hence the conversion to seconds here. Q = 5 x 300 Q = 1500 (C)
ST
Answered by Steffan T. • Physics tutor
6192 Views