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boyakko [2]
3 years ago
15

Jane believes that plate tectonics is a theory, and Mario believes it is a law. Which of the following best supports Jane’s argu

ment?
A. Plate tectonic theory specifies how fast the plates may have moved in the past.

B. Plate tectonic theory gives a precise prediction of the direction of plate tectonics.

C. Plate tectonic theory explains why the outer layers of the Earth move and change.

D. Plate tectonic theory provides a means to calculate exactly where and when the plates will move.
Physics
2 answers:
Gekata [30.6K]3 years ago
8 0

Answer:

its d

Explanation:

i did this and got it right

natima [27]3 years ago
6 0
Answer: D
Hope this helps at least a little bit :)
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The answer is b.) the momentum before the collision is greater than the momentum after the collision
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To halt the decline in biodiversity, we must do which of the following?
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<span>adopt ecological conservation practices </span>
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A rock is thrown downward from an unknown height above the ground with an initial speed of 6.1 m/s. It strikes the ground 1.7 s
insens350 [35]

Answer:

24.531 m

Explanation:

t = Time taken = 1.7 s

u = Initial velocity = 6.1 m/s

v = Final velocity

s = Displacement

g = Acceleration due to gravity = 9.81 m/s² = a

Equation of motion

s=ut+\dfrac{1}{2}at^2\\\Rightarrow s=6.1\times 1.7+\dfrac{1}{2}\times 9.8\times 1.7^2\\\Rightarrow s=24.531\ m

The initial height of the rock above the ground is 24.531 m

7 0
3 years ago
Magnet A has twice the magnetic field strength of magnet B and pulls on magnet B with a force of 100 N. The amount of force that
son4ous [18]

The force exerted by the magnetic in terms of the magnetic field is,

F\propto B

Where B is the magnetic fied strength and F is the force.

Thus, if the magnetic A has twice magnetic field strength than the magnet B,

Then,

B_A=2B_B

Thus, the force exerted by the magnet B is,

\begin{gathered} F_B\propto B_B \\ F_B\propto\frac{B_A}{2} \\ F_B=\frac{F_A}{2} \\ F_B=\frac{100}{2} \\ F_B=50\text{ N} \end{gathered}

Thus, the force exerted by the magnet B on magnet A is 50 N.

The force exerted by the magnet A exerts on the magnet B is exactly 100 N as given.

Hence, the option B is the correct answer.

3 0
1 year ago
Question 27 a motorboat takes 3 hours to travel 144km going upstream. the return trip takes 2 hours going downstream. what is th
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In this item, we let x be the rate of the boat in still water and y be the rate of the current.

Upstream. When the boat is going upstream, the speed in still water is deducted by the speed of the current because the boat goes against the water. The distance covered is calculated by multiplying the number of hours and the speed.
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Downstream. The speed of the boat going downstream is equal to x + y because the boat goes with the current.
                (x + y)(2) = 144

The system of linear equations we can use to solve for x is,
                  3x - 3y  = 144
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We use either elimination or substitution.
 
We solve for the y of the first equation in terms of x,
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Substitute this to the second equation,
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The value of x from the equation is 60

<em>ANSWER: 60 km/h</em>
5 0
3 years ago
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