An infrared wave has a wavelength of 6.5 × 10–4 cm. what is this distance in angstroms, å?

1 angstrom = 10^-8 cm 
6.5 x 10-4 cm  = 65 000 x 10-8 cm = 65 000 angstroms 
answer 65 000 angstroms

The answer is 65,000 angstroms

Explanation:

1 angstrom = 10^-8 cm
6.5 x 10-4 cm angostroms = 65 000 x 10-8 cm
=65,000 angstroms

Protons have a positive charge and, collectively, give an element its atomic number.

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current