Which of these stars does not have fusion occurring in its core?

A sprinter accelerates from rest to a velocity of 12m/s in the first 6 seconds of the 100 meter dash. a) how far does the sprinter travel during the first 6 seconds? b) how much farther does the sprinter have to travel to reach the finish line?

A mass m at the end of a spring oscillates with a frequency of 0.89 hz. when an additional 603 g mass is added to m, the frequency is 0.63 hz. what is the value of m?

Which statement correctly describes the formation of an electric current? A resistance causes electric charges to move from lower to higher potential. A voltage causes electric charges to move from lower to higher potential.

What is the wavelength of an x-ray whose frequency is 1.0*10^18 Hz?

Both carbon dioxide molecules and water molecules have polar bonds. Why then is carbon dioxide a nonpolar molecule while water is a polar molecule?

How many btus of heat energy are needed to raise the temperature of 99.6 lbs of water from 50 °f to 130 °f?

What is a different form of a characteristic, such as brown hair, is called

A book falls of the table and hits the floor. Is work done? Why?

A person of 83 kg is in an elevator. If the elevator is moving at a speed of 5 m/s, what's the person's kinetic energy? Keep 4 significant figures a 1,004 J b 1,038 c 1,280 J d 980 J e 1,435 J

What two equations can be used to determine the speed of a wave