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olga_2 [115]
3 years ago
11

An aeroplane cruises at normal speed. Upon fl ying into turbulent (unstable) air, it suddenly drops downwards vertically. Passen

gers in the aeroplane who are not wearing seat belts will A hit the seats in front of them. B hit the ceiling of the aeroplane. C be pushed against the back of their seats. D be pushed down into their seats.
Physics
1 answer:
fredd [130]3 years ago
6 0

Answer:

Your answer would be D. be pushed down into their seats.

Explanation:

You can think of it this way:

If you're not wearing a seat belt on an airplane that drops suddenly, in this case, vertically, which often happens with turbulence- you're the one at rest. You'll stay at rest as the plane (literally) drops out from under you.

If you're strapped in, the seat belt serves as an outside force acting on you, taking you with the plane as it drops and saving you from hitting the ceiling.

Always remember Newton's first law of motion: A body at rest will remain at rest unless an outside force acts on it.

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The orbital radius of an electron in a hydrogen atom is 0.846 nm. What is its de Broglie wavelength?
kotykmax [81]

Answer:

The  value  is  \lambda   = 1.329 *10^{-9} \  m

Explanation:

From the question we are told that

  The  orbital radius is  r =  0.846nm =  0.846 *10^{-9} \ m

Generally the de Broglie wavelength is mathematically represented as

      \lambda  =  \frac{2 *  \pi  r}{4}

substituting values

     \lambda  =  \frac{ 2 * 3.142  *  0.846 *10^{-9}}{4}

    \lambda   = 1.329 *10^{-9} \  m

6 0
3 years ago
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lara31 [8.8K]

Answer:

0

Explanation:

m = Mass of person

g = Acceleration due to gravity = 9.81 m/s²

d = Vertical height from the ground

F = Force = Weight = mg

Net work done would be

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Hence, the work done on the person by the gravitational force is 0

7 0
3 years ago
If I were to transmit a radio wave in our three dimensional world could a fourth dimensional “being” be able to receive it?
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IF you mean the second then thats some mystic stuff and its pretty creepy (although a fun read for me :P)
 
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3 years ago
The labeled images each represent the wave patterns found in the electromagnetic wave spectrum. which of these images are correc
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<span>A magnetic field would be produced by a beam of (3) protons.
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