What are earths two internal sources of heat energy?

One object is fired at an angle of ten degrees above the horizontal. A second object is fired at an angle of ten degrees below the horizontal, and a third is fired in an exactly horizontal direction.

Have a pH between 0-7.

the wires inside a cable each have there own plastic insulation. why does the insulasion have diffrent colours

Which describes mechanical energy? It is associated with both the motion and position of an object. It is associated with the motion of an object. It is associated with both the height and mass of an object.

If you suspect your culture of bacteria has 25 x 107 cells per mL, what would you want the final dilution to be in order to end up with 100 cfu on a plate?

If an ant were scaled up to the size of an elephant, the ant would be

A 4.0 kg food pack was dropped from a height of 200 m by a helicopter during flood relief operations. At what velocity will the food pack be falling halfway to the ground?

The sun generates both mechanical and electromagnetic waves. Which statement about those waves is true? The mechanical waves reach Earth, while the electromagnetic waves do not.

A 3-kg mass is in free fall. What is the velocity of the mass after 7 seconds?

How does the role of blood protect the body