In an electric motor, the rotating coil of wires wrapped around an iron core is a (n)

brush

transformer

commutator

armature

What are the short eruptions of intense high-energy radiation from the sun's surface called? Corona Prominences Solar flares Sunspots

In which of the following kingdoms are prokaryotes found? A-plant and animal only B-EUbacteria and archae only C-protist, fungus, plant, and animal only D-Eubacteria, arachea, protist, and fungus only

If you stop your bike very fast and fly over the handlebars which of newton's 3 laws would that be

Which of the following is the brightness of a star as we see if from Earth? A. absolute magnitude B. parallax magnitude C. apparent magnitude

Mac and tosh are arguing. Macs says that if he flings the Jell-O with a greater speed it will have greater inertia.?

What's the difference between the offspring of an asexual organism and a sexual organism

The contamination that results from the spread of bacteria from meat to vegetables is called

A rock has a mass of 5 kg on the moon. What is the mass of the rock on the earth

A battery applies 45 volts to a circuit, while an ammeter reads 10 ma. later, the ammeter reading drops to 7 ma. assuming the resistance has not changed, the voltage must have

A 150-kg object takes 1.5 minutes to travel a 2,500 - meter straight path. It begins the trip traveling 120 m/s and decelerates to a velocity of 20 m/s. What is the acceleration?