Sir Issac Newton:

A. proposed the elliptical orbit of the planets

B. applied mathematical reasoning to many astronomical theories

C. used mathematical calculations to discover the planet Neptune

D. all of the above

If a small air-gap was made in the iron core of a transformer, thereby increasing the reluctance of the magnetic circuit, what eVect would it have on the following: A. The no-load current, with the primary supplied at rated voltage. B.

The crankshaft in a race car goes from rest to 3000 rpm in 2.0 s. a. what is the crankshaft's angular acceleration? b. how many revolutions does it make while reaching 3000 rpm?

How do comets asteroids, and meteorites influence life on Earth?

An astronomical unit is defined to be A the average distance from the Earth to the Moon. B the average distance from the Earth to the Sun. C the average distance from our Sun to the nearest star.

What happens to the density as one progresses through the layers of the earth from the lithosphere toward the inner core

How could you determine the instantaneous speed during a trip?

The molecules of a substance are moving rapidly in a container. The molecules do not interact with each other. If the container is opened, the molecules will escape from the container. In what phase of matter are the molecules in the container?

What do we call the region around a magnet where it exerts its magnetic force?

If an astronomer claims to have discovered an object with a very eccentric orbit, what best describes the orbital trajectory of the object?

This gland lets your body use energy