Altruism means being completely selfless and yet eanting nothing in return

True / False

A negatively charged object has (more, fewer) electrons than an object that is neutral

A 300 kg dragster accelerates from the rest to the final speed of 120 m/s in 400 m (about a quarter of a mile) and encounters an average frictional force of 1200 N. What is the average output in watts AND horsepower if this takes 7.30 seconds?

What is the symbol for the speed of light? A. c B. l C. s D. v

A stuntman drives a car with a mass of 1500 kg on a drawbridge. The car accelerates with a constant force of 10,000 N. While he is driving, the drawbridge is raised to an incline of 30°.

Why was glass or plastic used to separate the filings from the magnets in the experiments? The experiment required me to place a bar magnet on a table, then place a sheet of glass or plastic over the magnet before sprinkling the filings over it.

Red light has a shorter wavelength than yellow light.

Approximately what is the parallax angle of a star that is 20 light-years away?

If the Earth and distant stars were stationary (motionless) in space, what would we observe about the wavelength from these stars? A. Wavelengths measured would match the actual wavelengths emitted. B.

Two fire trucks with sirens speeds towards and away from an observer. Which statement is true involving the Doppler effect observed by the observer?

What warm ocean currents keep the NC coast warm, even if it is winter