Physics, 27.09.2021 22:10 tonytashaqua
(1) The study of seismic (earthquake) waves has provided most of what we know about the interior of the earth. (2) The seismic waves change direction and speed as they encounter different materials. (3) With this information, scientists have been able to subdivide the Earth into layers. (4) The composition of the Earth is also supported by data from the study of meteorites. (5) Meteorites are pieces of asteroids that have broken off and enter Earth's atmosphere. (6) The meteorites have a similar composition to what is believed to be in the earth's interior. (7) It is also thought that the asteroids the meteorites broke off from were formed at the same time and in the same way as the planets in the solar system. Which sentences provide evidence for the internal structure of the earth?
Question 11 options:
1 and 3
2 and 6
4 and 7
3 and 5
Answers: 1
Physics, 21.06.2019 22:50, periwinkleaqua72
An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?
Answers: 3
Physics, 22.06.2019 19:30, NewKidnewlessons
Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)
Answers: 3
Physics, 22.06.2019 21:10, alexiaalfaro
The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.
Answers: 1
(1) The study of seismic (earthquake) waves has provided most of what we know about the interior of...
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