What is a star's main fuel during its lifetime? A. hydrogen B. carbon C. helium D. oxygen

The energy that is transferred through space by electromagnetic waves is called

A hydraulic system for a dentist's chair is designed to be able to lift 3,112 newtons. The surface area over which this force is applied is 707 cm 2. What force must be applied to the activator end of the system if the button has a surface area of 3.

Many scientists accept a theory about the origin of the universe, called the big bang theory. describe at least one piece of scientific evidence that is used to support this theory of the origin of the universe.

Collapse question part Part 4 (d) What is the unit vector in the direction of the spacecraft's velocity? (Express your answer in vector form.)

In a laboratory, Nakisha mixes a sodium hydroxide solution with an indicator called phenolphthalein. When combined, they create a pink solution. Nakisha wonders if mixing other solutions with phenolphthalein will also create this pink color.

How was bohr atomic model similar to Rutherford's model

A rigid container filled with a gas is placed in ice. What will happen to the pressure of the gas? And what will happen to the volume?

A man is sitting on a 20 m height building and his mass is 50 kg. Calculate the mechanical energy.

Which of the following correctly describes which types of waves travel through which types of mediums? A) Transverse waves travel through solids, liquids, and gases.

Niko was hiking in the mountains when he found a spring, or a place where water naturally flows out of the ground. Where did the water in the spring come from? A. It is water that was squeezed out of an igneous rock when the rock changed. B.