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4 years ago

How far do tectonic plates move in a year

Physics

1 answer:

Vladimir [108]4 years ago

6 0

Answer:

About 4-10cm/yr

Explanation:

Plates have different motion due to the tectonic settings and the properties of the plates.

Tectonic plates typically move very slowly over the weak asthenosphere in the mantle. This accounts for the wide range of about 4-10cm/yr. Some plates moves slower than this. It is difficult to perceive plate movement using our observational senses.

Scientists use GPS units and satellites to monitor the rate of movement of plates in a year to as to forecast a whole lot of environmental event that might result from that.

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What is the electric field due to a point charge of 20uC at a distance of 1 meter away from it?

Anettt [7]

The electric field due to a point charge of 20uC at a distance of 1 meter away from it is 180000 $\frac{N}{C}$ .

First, you have to know that the space surrounding a load suffers some kind of disturbance, since a load located in that space will suffer a force. The disturbance that this charge creates around it is called an electric field.

In other words, an electric field exists in a certain region of space if, when introducing a charge called witness charge or test charge, it undergoes the action of an electric force.

The electric field E created by the point charge q at any point P, located at a distance r, is defined as:

$E=K\frac{q}{r^{2} }$

where K is the constant of Coulomb's law.

In this case, you know:

K= 9×10⁹ $\frac{Nm^{2} }{C^{2} }$
q= 20 uC=20×10⁻⁶ C
r= 1 m

Replacing in the definition of electric field:

$E=9x10^{9} \frac{Nm^{2} }{C^{2} }\frac{20x10^{-6} C}{(1 m)^{2} }$

Solving:

E=180000 $\frac{N}{C}$

Finally, the electric field due to a point charge of 20uC at a distance of 1 meter away from it is 180000 $\frac{N}{C}$ .

Learn more:

5 0

2 years ago

Atmospheric pressure decreases with increment in height. give reason

jekas [21]

Answer:

pressure=height × density×acc due to gravity

pressire is directly proportional to height hence it decreses with decrease in height

here air column height is measured upside down so decreases witn increment

7 0

3 years ago

Read 2 more answers

A parallel circuit containing two bulbs and a bell has three paths for the current flow. If the first bulb in the circuit burns

yanalaym [24]

Answer:

Explanation:

Since the circuit is in parallel there will be no effect on the other loads.

3 0

3 years ago

A hockey puck sliding at 60.0m/s slows uniformly to 20.0m/s while travelling 800.0m.

julia-pushkina [17]

A) -3.75 meters/second
A=(20^2-80^2)/(2x800)
=(400-6400)/1600
=-6000/1600
=-3.75
B) 16 seconds
t=(20-80)/-3.75
=-60/-3.75
=16

3 0

3 years ago

Each piston of an engine makes a sharp sound every other revolution of the engine. How fast is a race car going if its eight-cyl

goldfiish [28.3K]

Answer:

93.75 m/s

Explanation:

Given:

The frequency of the sound = 750 Hz

The number of pistons making the sound = 8

Revolutions made by the engine = 2000 revolutions/ km

Thus,

the frequency of sound by 1 piston = 750 / 8 = 93.75 Hz

also, it is given that for every other revolution sound is made.

thus, for every 2 revolution sound is made

therefore,

Number of revolutions per second = 93.75 Hz × 2 = 187.5 rev/s

Now,

the speed of the car will be calculated as:

= Number of revolutions per second / Revolutions made by the engine

The speed of the car = $\frac{187.5\ rev/s}{2000\ rev/km}$

The speed of the car = 0.09375 km/s = 93.75 m/s

3 0

3 years ago