Aduck floating on a lake oscillates up and down
5.0 times during a 10.-second interval as a
periodic wave passes by. what is the frequency
of the duck’s oscillations?
(1) 0.10 hz (3) 2.0 hz
(2) 0.50 hz (4) 50. hz

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

Newtons view of arrangement of the universe. don't copy from anywhere.

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging