Celina has a water sample that's contaminated with salt and microorganisms. Which method should she use to purify the water.

What is the distance from rest to crest, or from rest to trough, called?

Which statements best describe magnetic fields? Check all that apply. A magnetic field is the area around a magnet where a force is exerted on certain objects. A magnetic field is an area of land where magnets are found.

Huan made a chart to study for an exam about radio waves. Which headings best complete the chart? X: Phase Y: Pulse X: Pulse Y: Phase X: AM Y: FM X: FM Y: AM

Lightning bolts can carry currents up to approximately 20 ka. we can model such a current as the equivalent of a very long, straight wire. part a if you were unfortunate enough to be 5.

Which factor has no effect on the motion of a mass on a spring? A. displacement B. mass C. period D. velocity E. acceleration

The average speed of a runner who runs 500 m in 96 s is what?

What is the net force on a 2-kg skateboard accelerating at a rate of 2 m/s2?

Which is a consequence of the third law of thermodynamics

Difference between Heterozygous and homozygous?

A wave has a speed of 50 m/s and a frequency of 10 Hz. Calculate its wavelength.