Stars combine Hydrogen to make Helium during nuclear fusion. Living things are made of heavier elements like Carbon, Oxygen, Iron, and Calcium. How did these elements form?

Which following is true off free falling object of different mass A. they have the same acceleration but different g value B. they have the same g value but different acceleration C. they experience the same force of gravity D.

What is a type of material that tries to prevent the flow of thermal energy?

2. Which layer of the sun is the hottest? 3. What 2 elements are in that layer? 4. Which layer is the "surface of the sun? 5. What is the area outside the chromosphere and what is its temperature? 6.

Find the resistance at 50°c of copper wire 2mm in diameter and 3m long

Diesel engines burn as much as 30% less fuel than gasoline engines of comparable size, as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have been implicated in global warming.

A fast, white water cascade is also known as what?

What is a stack of membranes that packages chemicals

Under what condition (s) will an object be in equilibrium? Notice that equilibrium in physics has a broader definition. (A) Only if it is moving with constant velocity. (B) Only if it is at rest.

If a pressure gauge measure an increase in 3*10^ (5) Pa on an area of 0.7 m^2, calculate the increase in the force applied to the area?

Which of the following is an example of potential rather than kinetic energy? a. water rushing over Niagara Falls b. a molecule of glucose c. a crawling beetle foraging for food d. light flashes emitted by a firefly