Calculate the number of vacancies per cubic meter in gold (au) at 900c. the energy for vacancy formation is 0.98 ev/atom. furthermore, the density and atomic weight for au are 18.63 g/cm3 (at 900c) and 196.9 g/mol, respectively.

An object moving at 30 m/s takes 5 sec. to come to a stop. What is the object's acceleration

The tendency of two masses alone in the universe to drift together is a result of

Scientists are often eager to learn more about the world around them. what is this attitude called?

Which of these choices is not a common acid (from the common acids table) ? 1. HNO3 2. NaCl 3. HCl 4. H2SO4

How many electrons are in the outer energy level of group 17 (7A) atoms?

Beth made the chart shown. A 2-column table with 1 row. The first column labeled X has entries Wall clock, T V remote control, Portable music player. The second column labeled Y has entries Refrigerator, Table lamp, Hair dryer.

Which sentence states Newton's third law? If two objects collide, each object exerts a force in the same direction as the other. If two objects collide, each object exerts a force equal to and in the opposite direction of the other.

Why did the chicken cross the road.

A 98.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.69 rad/s. A monkey drops a 9.29 kg bunch of bananas vertically onto the platform.

7. A type of non-renewable energy would be: O wind O petroleum O water solar