About 30 miles Into Earth, the speed of selsmic (earthquake) wave
ut 30 miles Into Earth, the spe
of seismic (eartha
e) waves Increases. V What does this cha
eed
Indicate about the material through which the selsmic waves are traveling?
(A)The waves travel from rock into metal
(B
The waves are traveling from cooler material into hotter material
(C) The waves are traveling from solid material into liquid material
II
(D
The waves are traveling from less dense material into more dense material

Explain how plate tectonics have changed earth’s surface over time. include the role of plate tectonics in the creation of landforms.

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?