a sportsman whose business is renting rowboats must buy a pair of new oars for each of his 60 boats. if the oars cost $200 per dozen pairs, how much does he pay for the oars? (Chemistry)

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments