The universal law of gravity states that all objects attract all other objects. why is this considered a universal law?
a. gravity is a principle that is in effect at all times.
b. the universe has many objects in it that have gravity.
c. laws are universal if they describe large objects.
d. laws are universal if they are in effect some of the time.

What is the fate of the electrons that interact with a specimen in an electron microscope?

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

Write down two additional questions about earth's magnetic field that will make your presentation more informative.