An object with a charge of 0.22C is separated by 0.67m from an object with a charge of -1.6. a) is the electric force between these two objects attractive or repulsive? explain

b) what is the magnitude of the electric force experienced by the object whose charge is 0.22C

c) what is the magnitude of the electric force experienced by the object whose charge is -1.6C?​

Diamond will scratch quartz. true or false

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Which type of reaction is shown in this energy diagram ?