Top answers

In most transformers, why is the power output is less than the power input.

As some energy is lost as heat/sound meaning the transformer is not 100% efficient
EB
Answered by Ethan B. • Physics tutor
7145 Views

Is light the fastest? if no, then explain quantum entanglement!

No, light is not the fastest travelling thing in this universe and quantum entanglement fully supports my openion. It is interesting to note that every light sorce converges to a point source as we move away...
P.
Answered by Prashant .. • Physics tutor
2798 Views

What does it mean to 'earth' something?

When you earth a charged object you're creating a physical path between this object and the ground so it loses its charge. To begin with the object is charged due to having extra or fewer free electrons. Whe...
RJ
Answered by Rhiannon J. • Physics tutor
19029 Views

Explain why an ice cube submerged in a drink melts faster than an ice cube on a kitchen surface (the drink, surface and room temperature are all equal). (3 marks)

(1) In the drink, all six faces are in contact with the liquid (or) On the kitchen surface, only one of the faces is in contact with a solid and the rest are in contact with the air (or) On the kitchen surfa...
AR
Answered by Alistair R. • Physics tutor
2454 Views

How do I remember all the formulas I will need for questions.

It is difficult to remember formulas, especially when they are similar and easy to confuse. Some methods of remembering the many formulas needed for physics and maths are to recite them, to do a lot of pract...
ES
Answered by Elizabeth S. • Physics tutor
2591 Views