What is meant by the statement '' density of water is 1000 kilograms per cubic metre ''?

When drawing a Bohr diagram for a hydrogen atom, if the element is in the 4th excited state how many energy shells would you draw?

What will happen and give a reason 1 - Don't put the coat on the snowman - it will melt him 2 - I don't think the coat will make any difference 3 - I think it will keep him cold and stop him from melting.

What is the primary energy that powers a car

Determine the oxidation number of each atom in the following compounds: sodium chloride and iron oxide.

An EM wave has frequency 9.90*10^14 Hz. What is its wavelength? How would we classify it?

A coach is hitting pop flies to the outfielders. if the baseball (m = 145 g) stays in contact with the bat for 0.04 s and leaves the bat with a speed of 50 m/s, what is the average force acting on the ball?

The two major ways to transfer charge between two objects are

When a wire loop is connected to a battery, what is produced in the loop?

A solid sphere of radius R has a total charge Q distributed evenly throughout its volume. What fraction of the total charge is located inside a radius R/2?

What is Nothing. (sorry i have been wondering this for a very long time)