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What is an element’s Atomic number tell you? Matter is mostly empty space. Can electricity flow...

What is an element’s Atomic number tell you?

Matter is mostly empty space.

Can electricity flow in an open circuit?

The unit of Power is Watts (say what!?). The unit of Energy is Joules usually denoted by a J.

What are the different ways that light interacts with matter?

What is the speed of light in miles per second?

Light is both a particle and a wave. Light is also massless (I forgot to say in class)!

Solutions

Expert Solution

Elements's atomic number shous the number of protons in the nuclei of that atom.

Yes matter is almost empty since the atoms of elements contains nuclei which is in the center of atoms and contains very small volume of atom and almost all the mass of atoms. Remaining volume of atom is empty.

No, there is break in open circuit. Electric charge cann't cross the break.

The unit of Power is Watt means Joule per second. It means if 1J Energy is used in 1 second then Power generated is equal to 1 Watt.

Light can interact with matter via Photoelectric effect, Compton effect, absorption, reflection, refraction and transmission.

Speed of light is 299 792 458 metre / s.

1 metre = 0.000621371 mile, Hence Speed of light is 186282.34 miles per second.

Light is basically Photon i.e. the quanta (packet) of light is photon. Since the photon plays both character of particle (in photoelectric effect) and wave (in interference). Hence light is both a particle and a wave. The rest mass of photon is zero.

genius_generous answered 2 years ago
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