Celina has a water sample that's contaminated with salt and microorganisms. Which two methods could she use to purify the water?

Why is tornadoes hitting the east coast of the USA?

A ___ is a machine which contains a lever and wedge that combine to make work easier.

An electric car is capable of going 225 km on a single charge. with a full charge to start, how many additional charges will it need to travel from seattle, washington, to san diego, california, a distance of 1257 mi?

Which of the following does not require molecules moving in order to heat something up? conduction radiation convection

Why do clothes often cling together after tum - bling in a clothes dryer? air pressure?

What type of motion occurs when an object spins around an axis without altering its linear position?

What happens to the movement of particles in a liquid when it is heated?

During a demonstration of the gravitational force on falling objects to her class, Sarah drops an 11 lb. bowling ball from the top of the science building. Determine distance the ball has traveled after falling for 1.

A teacher wants to demonstrate that unheated water can boil at room temperature in a beaker within a bell jar connected to a vac-uum pump. However, the vacuum pump is faulty and can reduce pressures only to 15 kPa.

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