What color is lightning

Which involves grouping items together because they are alike in some way?

Which describes what happens when fuel is ignited in a heat engine?

A package of mass 9 kg sits at the equator of an airless asteroid of mass 4.0 1020 kg and radius 5.7 105 m.

A loaded penguin sled weighing 80 N rests on a plane inclined at 휃=20°to the horizontal. Between the sled and the plane, the coefficient of static friction is 0.25 and the coefficient of kinetic friction is 0.15. a.

What is one reason that writing clear step-by-step procedures is important? A. It prevents you from faking results. B. It makes repetition and replication easier. C. It makes sure that no one copies your work. D.

In the physics of motion a force acting over a distance is?

What is the resistance of a clock if it has a current of 0.30 a and runs on a 9.0-v battery? 0.033 2.7 9.3 30

A child is sledding. He starts at the top of the hill with a velocity of zero, and 3 seconds later he is speeding down the hill at 12 meters per second. What is the child's acceleration?

An accelerating voltage

A speck of dust on a spinning dvd has a centripetal accelera - tion of 20 m/s2. a. what is the acceleration of a different speck of dust that is twice as far from the center of the disk? b.