2. If electrons are removed from an object, is the object positively or negatively

charged

Why do iron meteorites represent a much higher percentage of finds than of falls?

Three of the following simple machines are basically the same. The one that does NOT belong with the group is the__ A. lever C. wedge B. pulley D. wheel and axle

The sun's rays strike Earth's surface most directly at the poles. Near the Equator the sun's rays strike the surface less directly. True or False

What is the jet stream and how does it separate cold air to warm air?

Which statement about a pair of units is true? (A) A yard is shorter than a meter. (B) Amile is shorter than a kilometer. (C) A foot is shorter than a centimeter. (D) An inch is shorter than a centimeter.

The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Which has more gravitational potential energy - - a cliff diver at the top of the cliff or a cliff diver at the bottom of the cliff?

A skydiver with a mass of 60 kg jumps from an airplane. Five seconds after jumping the force of air resistance is 300 N. What is the acceleration of the sky diver, five seconds after jumping?

How many basic wave forms are there? A.) 1 B.) 2 C.) 3 D.) 4

How much power is reqired to lift a 10-n box 2 meters