Imagine that you move a substance from one container to another and it's volume changes, what state of matter is that substance?

A) solid

B) gas

C) liquid

A spring stretches by 18 cm when a bag of potatoes weighing 56 N is suspended from its end. How much elastic potential energy in J is stored in the spring when it is stretched this far?

If several resistors are connected in series in an electric circuit, the potential difference across each resistor (1) varies directly with its resistance (2) varies inversely with its resistance (3) varies inversely with the square of its

Which of the following is the accepted scientific opinion about the current warming trend? The extra input of carbon dioxide into our atmosphere has led to additional heat being trapped by greenhouse gases and in turn an overall increase in global

How dose an atom become an ion with a - 2 charge?

A 2.0-m long piano string of mass 10 g is under a tension of 338 n. find the speed with which a wave travels on this string.

What caused the solar system to form a disk?

Under what circumstances can air resistance exercises ignored?

How does friction affect all moving objects?

A force of 5N compresses a spring by 4cm. Find the force constant of the spring.

Which of the following equations are balanced correctly? A: Cu + H2O → CuO + H2 B: Zn + HCl → ZnCl2 + H2 C: 2C4H10 + 13O2 → 8CO2 + 10H2O D: 2Ag2O → 4Ag + O2