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Describe the photoelectric effect.

If we give a peice of gold negative charge and shine long wave, low frequency, electro-magnetic (E-M) radiation on it (for example radio waves) absolutely nothing will happen. If you start to shorten the wav...
US
Answered by Umar S. • Physics tutor
4736 Views

Which state can a substance NOT be in if heat transfer through convection is occurring?

Solid.
CM
Answered by Calum M. • Physics tutor
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Describe the photoelectric effect.

The photoelectric effect is a phenomenom which occurs when photons strike a metal causing electrons to be released from the metal atoms. This occurs because the photons transfer their energy to the electrons...
IW
Answered by Iman W. • Physics tutor
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A car is travelling at 10m/s when it brakes and decelerates at 2ms^-2 to a stop. How long does the car take to stop?

This is a question testing the knowledge of the equations of constant acceleration (Suvat equations)First convert the question into a standard form. For example by writing out the variables as follows s (dis...
KM
Answered by Kirill M. • Physics tutor
9209 Views

What is the Quark structure, Baryon number, and antiparticle of a kaon, K+, which has a strangeness of 1.

Firstly we must figure out what we know about this particle. We have its stangeness which is 1 and we know its charge from the "+" symbol in the question, which is also 1.For the first bit we shoul...
LH
Answered by Louis H. • Physics tutor
43162 Views