What is a chemical combination of substances

A) a compound

B) an atom

C) a mixture

D) an element

Can you get sunburned through glass?

Calculate the speed of a 500.0 kilogram car that possesses 400,000 joules of kinetic energy.

What about the atomic model shown below was shown incorrect?

Does your measurement technique for speed enable you to measure the fastest speed attained during an event?

What two simple machines make up a screw?

What happens when you rub an ebonite stick with a wool cloth?

What is ferromagnetism?

Why are scientists most likely working on developing cleaner-burning fuel for cars

How are winds created? How does land and water heat differently?

A man standing on very slick ice fires a rifle horizontally. The mass of the man together with the rifle is 70 kg, and the mass of the bullet is 10 g. If the bullet leaves the muzzle at a speed of 500 m/s, what is the final speed of the man?