What is a vortex? need some help

Answers

Answer 1
Answer: Huge mass of whirling air (something like a tornado) 

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Two strings of equal length are stretched out with equal tension. The second string is four times as massive as the first string. If a wave travels down the first string with velocity v , how fast does a wave travel down the second string?

Answers

It travels at a velocity of "4v"

What determines the atomic mass of an element? A.
the sum of the neutrons and the electrons

B.
the sum of the protons and electrons

C.
the sum of the ions and isotopes

D.
the sum of the protons and the neutrons

Answers

D. protons + neutrons. Electrons have relatively small mass compared to them. 

In Young experiment, a light with a wavelength of 410 nm falls on two slitsseparated by 0.03 mm, find the angle between the central bright band and
the first order bright band
A= 0.78
B= 0.11
C= 0.032
D= 0.62

Answers

The angle between the central bright band and the first order bright band is 0.78⁰, hence option A is correct.

According to the question:

A light with a wavelength of 410 nm falls on two slits separated by 0.03 mm,

So, the angle between the central bright band and the first order bright band is,

The angle will be, θ = λ/d radian

λ = 410 nm (410 × 10 ⁻⁹ m)

d = separation of slits (0.03 mm) or 0.03 × 10 ⁻³ m

θ = \rm (410* 10^-^9)/(0.03*10^-^3 ) radian

= 0.01367 radian

= 0.01367 × (180/π)⁰

= 0.78⁰

Thus, the angle between the central bright band and the first order bright band is 0.78⁰, hence option A is correct.

Learn more about light, here:

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Answer:

B

Explanation:

Convert 550 cm into m. Please show your work

Answers

There are 100cm in one metre. Hence, divide 100 by 550 to figure out for much 550cm is in meters. It is 5.5m.

According to the theory of plate tectonics, which forces cause the movement of plates in the earth's crust? A. Magnetism and Solar Radiation
B. Earthquakes and Volcanic Eruptions
C. Convection and The Moons Gravitational Pull
D. Convection and Gravity

Answers

Your answer is C.  Because Heat from the earth's interior that fuels convection currents which moves the crustal plates on the earth's surface.
The correct answer is B.

Consider the following statement: The magnitude of the buoyant force is equal to the weight of the amount of fluid that has the same total volume as the object. Under what circumstances is this statement true?

Answers

Buoyant force is equal to the weight of the total amount of liquid displaced by an object when submerged partially or completely in the fluid. This means that if an object that has a volume of 2m³ has 50% (1m³) of its volume submerged in water, the buoyant force will be equal to the weight of 1 m³ of water, this is about 1000kg.

With this in mind, the buoyant force will be equal to the weight of the amount of fluid that has the same total volume as the object when the object is completely submerged, this is to say, it has its total volume under the fluid.