Why do scientists think Mars once had liquid water on the surface?Please help!!!!!!!!!!!!!!!!!
(Homework due tomorrow!!!)
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and so that ice must have come from somewhere
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Why does a balloon filled with helium rise while a balloon filled with an equal volume of average atmospheric air does not?A.Helium has no mass, but air does. B.Helium increases the balloon's mass more than air. C.Helium has a higher density than air. D.Helium has a lower density than air.
List three measurements with different units this are equal to 5 meters
When polarizing an object, what happens to the charges in the object?A. They swirl about like bees in a hive.B. They separate, with positive charges on one side and negativecharges on the other.C. The protons drain off, leaving the object negatively charged.D. They repel each other and spread out all around the outer surface.
Scientist A believes she has discovered a new procedure that is better than a procedure currently in use by physicians. She tests her procedure on several occasions and achieves excellent results. Her procedure could be accepted as the best when a community of scientists A) accept Scientist A’s procedure automatically because of her credentials. B) carry on further discussion, using many trials if experimentation is needed. C) carry on further discussion, using only a few trials if experimentation is needed. D) reject Scientist A’s procedure; once a procedure is put into place, it can’t be altered with new evidence.
ocean waves
ultraviolet waves
earthquake P-waves
earthquake S-waves
radio waves
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Answer:
Sound waves and earthquake P-waves are longitudinal waves.
Explanation:
Longitudinal waves are waves in which the displacement through the medium is in the same direction of movement of the wave, independent of the direction.
There are included in the concept of longitudinal wave: sound waves (vibrations in pressure, particle displacement and velocity of particles propagated in an elastic medium) and earthquake waves of type P (created by earthquakes and explosions).
Eathquake P-Waves
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time
T₁=10
T₂=10.2
T₃=10.4
T₄=10.6
by v=
we get
V₁=
V₁=10m/s
V₂=
V₂=9.8m/s
V₃=
V₃=9.61 m/s
V₄=
V₄=9.43 m/s
V₁:V₂:V₃:V₄ = 10 : 9.8 : 9.61 : 9.43
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Pi is commonly used in its more simpler from, and its most commonly known form of 3.141
I hope this answers your question.
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their speed, which is the speed of light
it makes the sound louder
it increases the wavelength of the sound
it increases the frequency of the sound
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Answer:
It increases the wavelength of the sound and gets softer if the amplitude decreases
Explanation:
And can i have brainlist??
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= (300m / 15s) / (125m)
= (300m) / (15s x 125m)
= (300) / (15 x 125) (m/s-m)
= 0.16 / sec = 0.16 Hz .