Which choice names the two parts of Earth that make up the lithosphere?
2 answers:
Answer:
<h2>Crust and outer part of mantle.</h2>Explanation:
The lithosphere is the solid and outer part of the Earth. Includes the upper portion of the mantle and the crust, which are the outer layers of the Earth, that's why is commonly defined as the hard part of the Earth, refer to the image attached to see it better.
In addition, we could divide the lithosphere in two parts: oceanic and continental. The oceanic lithosphere is denser than the continental lithosphere and it's linked to the oceanic crust. All these parts comprehend the tectonic plates, which are the most known part of the lithosphere, because is most familiarize with their movements.
Therefore, the correct answer would be: Crust and outer part of mantle are the two parts that make up the lithosphere.
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Answer:
0.00493 m/s
Explanation:
T = Temperature of the isotope = 85 nK
R = Gas constant = 8.341 J/mol K
M = Molar mass of isotope = 86.91 g/mol
Root Mean Square speed is given by
The Root Mean Square speed is 0.00493 m/s
The question is incomplete. Here is the complete question.
Cars A nad B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance beyond the starting line at t = 0. The starting line is at x = 0. Car A travels at a constant speed
. Car B starts at the starting line but has a better engine than Car A and thus Car B travels at a constant speed
, which is greater than
.
Part A: How long after Car B started the race will Car B catch up with Car A? Express the time in terms of given quantities.
Part B: How far from Car B's starting line will the cars be when Car B passes Car A? Express your answer in terms of known quantities.
Answer: Part A:
Part B:
Explanation: First, let's write an equation of motion for each car.
Both cars travels with constant speed. So, they are an uniform rectilinear motion and its position equation is of the form:
where
is initial position
v is velocity
t is time
Car A started the race at a distance. So at t = 0, initial position is .
The equation will be:
Car B started at the starting line. So, its equation is
Part A: When they meet, both car are at "the same position":
Car B meet with Car A after units of time.
Part B: With the meeting time, we can determine the position they will be:
Since Car B started at the starting line, the distance Car B will be when it passes Car A is units of distance.