A child weighs 300 N. What is the child's mass

Jill has a mixture of sand and iron fillings. The mass of the mixture is 250 g. Jill uses a magnet to seperate the two substances. Then she measures the mass of the sand as 150 g what should be the mass of the iron fillings

Why do scientists need to use radar to study venus surface

Which object reflects light with the longest wavelength

Brewed coffee is often too hot to drink right away. you can cool it with an ice cube, but this dilutes it.

what holds the atoms in plastic together

An element that is a very reactive gas is most likely a member of what group?

Describe the concept of orbital motion as it relates to the earth., moon and sun

Which statement about human behavior would john B. Watson support

What action happens if the moon spins on its axis like a top

A teacher has asked four students to state a scientific theory. Which student is correct?