A source produces 56 waves in one second and the waves move with a speed of 31 m/s. What is the wavelength of this wave? 0.55 m

1.9 m

3.5 m

0.29 m

31 m

Which best represents the law of conservation of mass ?

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon