When does a nebula become a star?

How do you find the volume of a rock

The star player of the team should be given the ball at all times so the team can win true or false

How does water get up to the atmosphere, and how does it get back down to earth surface

An object with a mass of 2 kg has a force of 4 N acting on it. What is the acceleration of the object?

What is the first step a scientist usually take to solve a problem?

During a demonstration of the gravitational force on falling objects to her class, Sarah drops an 11 lb. bowling ball from the top of the science building. Determine distance the ball has traveled after falling for 1.

A teacher wants to demonstrate that unheated water can boil at room temperature in a beaker within a bell jar connected to a vac-uum pump. However, the vacuum pump is faulty and can reduce pressures only to 15 kPa.

How many btus of heat energy are needed to raise the temperature of 99.6 lbs of water from 50 °f to 130 °f?

What is a different form of a characteristic, such as brown hair, is called

A book falls of the table and hits the floor. Is work done? Why?