If a wave vibrates back and forth three times each second, and its wavelength is 2 meters, what is its frequency

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)