Which rule for assigning oxidation numbers is correct

Hydrogen is usually - 1.

Oxygen is usually - 2.

Apure group 1 element is + 1.

Amonatomic ion is 0.

A proton is traveling - x direction through a uniform magnetic field which is in the + x direction. In which direction will the proton be immediately pushed.

A horizontal line above the time axis of a speed vs. time graph means an object is ___. a) not moving b) moving at a constant speed c) moving at a constant velocity

3. A ray of light incident on one face of an equilateral glass prism is refracted in such a way that it emerges from the opposite surface at an angle of 900 to the normal. Calculate the i. angle of incidence. ii.

A 4kg mass is in free fall. What is the velocity of the mass after 11 seconds.

One container has 100 mL of water and a second container has 1000 mL of water. If the temperature in both containers is 22 C (71.6 F). Which container has the greatest amount of thermal energy and why?

A flash of white light containing all the colors of the visible spectrum in air shines straight down on the surface of a pool.

A car accelerates uniformly from 0 to 15m/s in 5 s. Calculate acceleration.

Which device would a sleep researcher use to monitor a sleeping person's brain waves?

An experiment is performed to obtain the value of a physical property. If the true (i. e., correct) value of the property is 50 and the measured (i. e., experimental) value is 32, the percent error of the experimental result is:

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because of sudden industrial development, the trees in the city were covered with soot.