If the universe is expanding, what is outside it? If there is nothing outside it, how does it expand to create void?

Thorium-229 is a highly radioactive isotope used in the treatment of certain cancers. Use the chart to determine how much thorium would remain after 7,340 years if a sample began at 20 pounds of pure Th-229.

What is the binding energy of Helium atom if its mass is 4.002603 u?

Part a determine the object's velocity at times t=0 s, 2 s, 4 s, 6 s, and 8 s. express your answer using two significant figures.

What is the awnser to Blank occurs when a substance changes from a liquid to a gas

if you traveled the first 150km in 2.5 hours, and the second part of the trip, 100km in 1.4 hours. what w your average speed

A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine

Why do you float in space

How does physical change affect the identity of a substance

A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment

What part of the atom does nuclear radiation come from?