PHYSICS HIGH SCHOOL

21 point
Which of the following is an example of an allele?
axial flowers
all of the above
1
a
2
ОО
AA
3
Previous

Answers

Answer 1
Answer:

Answer:

AA

Explanation:

This is flower which is the example of allele

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When the mass of an object increases, the force of gravityincreases.decreases.remains the same.becomes irregular.
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What force causes a moving object to move in a curved or circular path?

What substances were found in the innermost regions (within about the inner 0.3 AUAU) of the solar system before planets began to form?

Answers

Answer:

Hydrogen and helium compounds.

Explanation:

We know that the solar System was formed around 4.6 billion years ago, due to the gravitational collapse of a giant interstellar molecular cloud.

This cloud  is a type of interstellar cloud and its density and size permit the formation of molecules, most commonly molecular hydrogen.

Therefore the principal substances were found before planets began to form are hydrogen and helium compounds, besides Rocks, metals, most of them in gaseous form.

I hope it helps you!

The notation specific to the organization or arrangement of electrons within orbitals surrounding the nucleus of an atom.

Answers

Electron configuration

Four landing sites are proposed for a lander. Data about the sites are listed in the table.A 3 column table with 4 rows. The first column is labeled landing site with entries W, X, Y, Z. The second column is labeled height above surface in meters with entries 32, 16, 35, 12. The last column is labeled acceleration due to gravity in meters per second squared with entries 1.6, 3.7, 1.6, 3.7.
At which landing site would the lander have the greatest amount of gravitational potential energy?

A. W
B. X
C. Y
D. Z

Answers

Answer:

Explanation:

The greatest amount of gravitational potential energy at landing site X

What is the greatest  gravitational potential energy?

To calculate the gravitational potential energy at each landing site, we can use the formula:

Gravitational Potential Energy (PE) = mass × acceleration due to gravity × height above surface

If the mass is assumed to be constant, we can ignore it and focus on the acceleration due to gravity and height above the surface.

From the table, we can see that the lander would have the greatest amount of gravitational potential energy at landing site X, with a value of 592.8 Joules.

The height of the Empire State Building is 318.00 meters. If a stone is dropped from the top of the building, what is the stone's velocity just before it strikes the ground?

Answers

This is a free-fall problem. This can be answered using one of the free-fall equations:

V^2 = 2gh or V = √(2gh)

Where V = velocity ; h = total height (given as 318m) ; g = acceleration due to gravity (as this is on Earth, let us use 9.8 m/s^2)

With the given values, we can substitute it into the equation directly like so:

V = √(2gh)
V = √(2 x 9.8 x 318)
V = √(6232.8)
V = 78.94808 or approximately 78.95 m/s

Therefore the stone's velocity just before hitting the ground is 78.95 m/s.

15) What is the frequency of a pendulum that is moving at 30 m/s with a wavelength of .35 m?show step by step

Answers

We know that there is a formula velocity = frequency x wavelength for all types of waves.

If we assume one complete oscillation of a pendulum to be wavelength we can apply the above formula for the pendulum too.

So as v = fλ and f = v/λ we can just plug in the values to get our answer of frequency.

So frequency = 30/0.35 which is equal to 85.17 Hertz (Hz).

I think you're trying to take the formulas for speed, wavelength, and
frequency of a wave, and apply them to a pendulum.  You can't do that. 
It doesn't work.

A pendulum is moving in 'simple harmonic motion', not wave motion.
It's speed is continuously changing, from zero at both ends of its swing,
to maximum as it passes through the 'rest' position at the bottom.  And
there's no wavelength defined for a pendulum ... if you're thinking that
it could be the distance from end to end of its swing, or maybe half of
that, you should know that the frequency of an ideal simple pendulum
is not related to that distance at all.

Finally, in the real world, the numbers in this question really kind of
don't make any sense. You have a structure where some part of it is
roughly a foot long (0.35m = 13.8 inches), and at least at some point
during its swing, something is moving at 30 m/s ... about 67 mph ! 
If something like that could even stay on the table, and IF its frequency
were (speed/wavelength) ... like a wave's frequency is ... then its frequency
would be  (30 / 0.35) = 85.7 Hz ! !  The thing would be wiggling back and
forth every 0.017 second !  It would need to be operated only inside
a bomb shelter, with all personnel withdrawn beyond a safe perimeter
before it flies apart and scatters shrapnel everywhere.

The Sun transfers energy to the atmosphere primarily by _____.conduction
convection
radiation
all of the above

Answers

Radiation is the only one that can pass through a vaccum (like space). You need a medium for conduction and convection to work. Therefore the answer is radiation.

Answer:

radiation is the answer
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