How many electrons is there in the outer shell of nitrogen?

You do 1200J of work with gears. If the gears do 1000J of work, what is the efficiency of the gears?

True or false? A tide with the least distance between low and high tides is called a neap tide.

When the vapor pressure of a liquid is equal to the atmospheric pressure the liquid?

Topographic maps are a type of road map. True or false

9) Because of friction A) energy is NOT always conserved. B) NOT all potential energy is converted to kinetic energy. C) all of an object's kinetic energy turns into potential energy. D) all of an object's potential energy turns into kinetic energy.

What type of intermolecular forces would you expect to find in a pure liquid sample of carbon tetrachloride?

Describe how rockets lift off.

Which of the pollutants shown in Figure 4-2 are considered to contribute to the pollution problem known as acid precipitation?

A billiards ball B rests on a horizontal surface and is struck by another billiards ball A of the same mass m = 0.2 kg. Ball A is initially moving at 18 m/s and is deflected 28° from its original direction. Assume the collision is elastic.

A model rocket is fired vertically from the ground with a constant acceleration of 45.3 m/s2 for 1.46 s at which time its fuel is exhausted. What is the maximum height (in m) reached by the rocket?