Two parallel wires spaced 0.50 m apart in a horizontal plane carry oppositely directed currents of 200 a. (i) what is the force per unit length on the wires? (ii) are the wires attracted or repelled?

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

What happens to an isotope during radioactive decay?

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up