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Illusion [34]
3 years ago
10

This involves convection currents.

Physics
2 answers:
Julli [10]3 years ago
6 0
"Wind patterns" is the one among the following choices given in the question that <span>involves convection currents. The correct option among all the options that are given in the question is the second option or option "B". The other choices can be easily negated. i hope that this is the answer that has helped you.</span>
Vitek1552 [10]3 years ago
5 0

Answer:

B

Explanation:

Wind is known as the movement of air molecules from one place to another, and this can also be used as a definition for a convection current.

Convection is the scientific phenomenon where by air molecules become less dense as they get hotter, and as they become less dense, they rise higher into the air. While this happens, colder molecules move into the space where the previous molecule was, and as that one rises, another takes its place. So we are stuck with a continuous loop of moving air molecules. If enough air molecules experience this, such as heating over a large area, affecting a lot of molecules, then wind patterns are created.

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A 2000 Kg car going 20 m/s crashes into a wall. What is the force of the car on the wall? ​
lidiya [134]

Answer:

40,000N

Explanation:

Force = Acceleration × Mass

2000×20=40,000

4 0
3 years ago
A proton enters a region of constant magnetic field, perpendicular to the field and after being accelerated from rest by an elec
kicyunya [14]

Answer:

 B = 1.1413 10⁻² T

Explanation:

We use energy concepts to calculate the proton velocity

starting point. When entering the electric field

        Em₀ = U = q V

final point. Right out of the electric field

        em_f = K = ½ m v²

energy is conserved

       Em₀ = Em_f

       q V = ½ m v²

       v = \sqrt{2qV/m}

we calculate

       v = \sqrt{\frac{ 2 \ 1.6 \ 10^{-19} \ 300}{1.67 \ 0^{-27}} }

       v = \sqrt{632.3353 \ 10^8}

       v = 25.15 10⁴ m / s

now enters the region with magnetic field, so it is subjected to a magnetic force

        F = m a

the force is

       F = q v x B

as the velocity is perpendicular to the magnetic field

       F = q v B

acceleration is centripetal

       a = v² / r

we substitute

       qvB =1/2  m v² / r

       B =  v\frac{m v}{2 q r}

we calculate

       B = \frac{1.67 \ 10^{-27} 25.15 \ 10^4 }{1.6 \ 10^{-19} 0.23}

       B = 1.1413 10⁻² T

8 0
3 years ago
How much force must you apply to give the go cart an acceleration of 0.9m/s^2
qaws [65]
It's dependent on the mass. You can fimd the force needed using the formula F = ma. Where F is force, m is mass of the cart and a is the acceleration (0.9m/s^2). The heavier it is the more force you are going to need. Remember unit of force is N
5 0
3 years ago
What property appplies to the element radon?
Arlecino [84]
Radioactive element
I. E..,ratio of neutrons is to protons is greater than 1.5
8 0
3 years ago
How the choice of building materials and techniques can help them cool down faster, after heating up.
Sauron [17]

Answer:

The choice of building materials and techniques can help them cool down faster, after heating up is explained below in brief details.

Explanation:

Building materials

Buildings that are composed of rock, bricks, or pavement, or inserted into the territory, can seem cooler thanks to the great "thermal mass" of these elements – that is, their capability to assimilate and discharge heat gently, thereby softening temperatures over time, producing daytime cooler and night-time warmer.

3 0
3 years ago
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