In a compound microscope, the objective has a focal length of 0.50 cm, while the eyepiece has a focal length of 1.9 cm. the separation between the objective and the eyepiece is l = 14.0 cm. another microscope that has the same angular magnification can be constructed by interchanging the two lenses, provided that the distance between the two lenses is adjusted to a value l'. what is l' ?

The metric unit of electrical power is the watt volt ampere ohm

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.