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What is temperature and why are Kelvins used?

Temperature is the macroscopic effect of the average kinetic energy of the subatomic particles that compose a material. Kelvins are therefore used because they are the only true scale that connects to thi...

Answered by Giulio Remo C. • Physics tutor

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An electric whisk in a bakery has two motors, each with an average power of 1500W. The whisk is used for 4 hours each day, 7 days a week. Electricity costs 18p per kilowatt-hour. Calculate the cost of the electricity used by the whisk in one week.

First, we must calculate the amount of time spent using the whisk in one week:4 x 7 = 28 hours a weekNext we calculate the power used; as the whisk has two motors, the average power used by the whole whis...

Answered by Iqra S. • Physics tutor

2499 Views

Bernard says that a mass executing uniform circular motion is not accelerating as it's speed is not changing. Which parts of his statement are correct and which are false. For those which are false state why they are and give the correct version.

Correct:For a mass which is executing uniform circular motion, it's speed doesn't change.
False:(1) A mass which is executing uniform circular motion is not accelerating
Correction to (1)

Answered by Oliver C. • Physics tutor

1511 Views

What are the 3 main types of radiation?

The three main types of radiation are alpha, beta and gamma radiation. Alpha particles are the largest, two protons and two neutrons bound together (so they have a +2 positive charge). Th...

Answered by Sarah A. • Physics tutor

4376 Views

What is a boson, as described by the standard model?

A boson is a "force-carrier": a particle that corresponds to one of the fundamental forces of nature. There are four fundamental forces, which include: Gravity, Electromagnetism, Weak Nuclear Fo...

Answered by Lewis L. • Physics tutor

1918 Views