The core collapse phase at the end of the life of a massive star is triggered when

If an object is moving at a speed of 5 m/s and has a kinetic energy of 600 J, what must its mass be?

If an atom had 35 protons in the nucleus how many electrons will it have orbiting the nucleus?

How does adding more of a substance affect it's density?

Gold can be found in native or pure state in nature, why

Which Greek first proposed that the sun was the center of the universe?

A zebra starts from rest and accelerates at 1.9 m/s2 what will be the acceleration after 5 seconds

When you measure the temperature of an object you are measuring

What are two ways the Doppler effect can be applied in everyday life?

The two dry sand samples are examined by changing one parameter. The independent variable, the one that is intentionally manipulated between the two samples, is the (temperature over time, mass of each sample, or type of material used)

What is the unit of G in the F=Gm1m2/r^2