What are the two requirements of an electric current?

In what ways are plasmas similar to gases? What makes plasmas different than gases?

The force shown in figure 7-15 moves an object from x=0 to x=0.75 m. How much work is done by the force?

The vapor pressures of pure carbon disulfide and carbon tetrachloride are 360 and 99.8 torr, respectively, at 296 K. What is the vapor pressure of a solution containing 50.0 g of each compound

You paddle a canoe with a force of 338 N. You and the canoe have a combined mass of 83 kg. What is the acceleration of the canoe? A. 5.3 m/s2 B. 4.1 m/s2 C. 0.2 m/s2 D. 2.1 m/s2

What is air resistance a form of? Define air resistance

The leaves of a tree lose water to the atmosphere via the process of transpiration. A particular tree loses water at the rate of 3 x 10^-8 m^3/s; this water is replenished by the upward flow of sap through vessels in the trunk.

Which of the following is evidence used to support the Big Bang Theory? background radiation increasing distances between galaxies both of the above

Which of the following statements about noncovalent bonding interactions is NOT true? Van der Waals interactions, also known as dispersion forces, are the weakest of the attractive noncovalent bonding interactions.

Does a rising GDP benefit everyone

You have a neutral balloon. What is its charge after 12000 electrons have been removed from it? The elemental charge is 1.6 * 10-19 C. Answer in units of µC.