Which of the following consists of several billion stars and interstellar matter?

Galaxy

Solar system

Planets

Nebula

The reason an electric current can create a magnetic field is due to the phenomenon of

What two controls on a car cause a change in speed? What control causes only a change in velocity

Explain how water circulates from deep oceans to the surface.

What makes up electric current at the atomic level

An object of mass 12kg is held at a weight of 5m above the ground for 30s. Calculate the workdone during this period.

A block of mass 3.5 kg slides down a frictionless inclined plane of length 6.4 m that makes an angle of 30 degrees with the horizontal. if the block is released from rest at the top of the incline, what is its speed at the bottom

What is the wavelength of an earthquake wave if it has a speed of 5 km/s and a frequency of 10 Hz?

The gamma ray released by each decay carries 140kev of energy. find the total energy e released by decays in the 2 hours.

Think of the last five things you read. Now think of a type of reading you havent done recenty have never read. What kind of pattern do you see in your reading? What is your favorite type of reading and your least favorite type of reading?

Consider this statement: Air is matter. Which facts best support the statement? A. Balloons can be filled with air. B. Air is essential for life to exist. C. Air has mass. D. Air is not an element. E. To float on air is to be happy. F.