How many types of quarks are there?

a. 2

b. 4

c. 6

d. 8

What role has science played in history?

What is escape velocity

Which best describes the weak nuclear force? It maintains attraction between the molecules in liquids It attracts the nucleus of one atom to the nucleus of another atom.

The level of the water in the open aquarium tank goes down each day. why?

Why does a weightless object still have mass

Why do we eat today

Which statement about ammeters and voltmeters is true? A. Current and voltage are the same throughout a circuit so where you place the ammeter and voltmeter doesn't matter. B.

Teens realize that things may be "shades of gray" after they enter Piaget's social stage. identity crisis stage. menarche stage. formal operational stage.

Technician A says that fractured rods have a unique mating surface and that only the cap that was fractured is the one that will fit that rod. Technician B says that a powdered metal rod is less expensive, lighter, and as strong as a forged rod.

What is the expected wavelength (in cm) of 10.5 ghz microwaves in free space?