1) A rock is dropped from a cliff with a height of 200 m. With what velocity will the rock hit the ground

could anyone help explain

Answer:

A - Crest,  B - amplitude,  C - wavelength,  D - trough

Explanation:

The amplitude is letter B, the wavelength is letter C, the crest is letter A and the trough is letter D.

Amplitude (B) refers to the maximum displacement or distance from the equilibrium position of a wave.

Wavelength (C) is the distance between two corresponding points on a wave. It is commonly measured as the distance between two consecutive crests or two consecutive troughs of a wave.

A crest (A) is the highest point or peak of a wave. It is the point where the displacement of the medium through which the wave is traveling is maximum in the upward direction.

A trough (D) is the lowest point of a wave. It is the point where the displacement of the medium is maximum in the downward direction.

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energy is evolved ....ig

Answer:

Solution: If two liquid drops coalesce then there will be a decrease in surface area, simultaneously there will be a decrease in surface energy hence energy is liberated.

Explanation:

What i mean is basically 2

0

We know

[tex]\\ \rm\hookrightarrow Y=\dfrac{Stress}{Strain}[/tex]

[tex]\\ \rm\hookrightarrow Y=\dfrac{\sigma}{\Delta \ell/\ell}[/tex]

[tex]\\ \rm\hookrightarrow Y=\dfrac{0}{\Delta \ell/\ell}[/tex]

[tex]\\ \rm\hookrightarrow Y=0[/tex]

Answer:

FALSE

Explanation:

an electric field has both magnitude and direction. it also has strength

The potential energy of the raised wooden bath will be converted into kinetic energy of the flying baseball when it is hit.

The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.

The potential energy of the raised wooden bath will be converted into kinetic energy of the flying baseball when it is hit.

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Answer:radiation, conduction, and convection

one or the other

Answer:

across:

5) infrared

6) convection

7) vacuum

8) conduction

9) insulator

down:

1) conductor

2) currents

3) radiation

4) insulation

During photosynthesis, light energy is converted into an electron flow in the reaction center chlorophyll.

Photosynthesis can be defined as a biological and chemical process through which green plants (autotrophs) convert light energy (sunlight) into chemical energy.

In Science, photosynthesis is represented by the following chemical reaction:

[tex]Carbon \;dioxide + water + light energy \rightarrow sugar + oxygen[/tex]

In conclusion, the electrons found within the pigment molecules are excited by visible light, which is then converted into an electron flow in the reaction center chlorophyll.

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Answer:

Both transfers thermal energy from warm objects to cooler objects

Explanation:

Both transfer thermal energy from warm objects to cooler objects

The lunar phase that occurs one week after the first quarter is :

It takes about 4 weeks for the moon to complete its cycle of phases. After every 1 week the moon undergoes one quarter (1/4) of its phase/cycle. Therefore the primary lunar phase that the moon will undergo one week after the first quarter is the Third quarter phase before the full moon

During the third quarter phase, half of the moon is completely illuminated in comparison to the other half ( first quarter ). this phase is the last phase before the full moon.

Hence we can conclude that The lunar phase that occurs one week after the first quarter is : Third quarter phase.

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Hi there!

Recall the equation for weight.

[tex]W = Mg[/tex]

W = Weight (N)

M = Mass (kg)
g = acceleration due to gravity (m/s²)

The weight of an object depends upon its MASS and the strength of the GRAVITATIONAL field. We can solve for weight:

[tex]W = 1360 * 9.8 = \boxed{13,328 N}[/tex]

Answer:

metric system

Answer:

1. is held

2. was

3. be cancelled

4. has been moved

5. is being filmed

Explanation:

If you read them out, you can find out which ones flow the best! Hope this helps!

Answer:

The answer to this is D two of the above

Answer:

Cell theory is the scientific theory that states that all living things are composed of cells and that cells are the basic unit of life. The three principles of cell theory are the cell is the smallest unit of life, all cells come from preexisting cells, and cells are the basic unit of function in living things.

Explanation:

Please mark me brainliest

Answer:

[tex]b=-\frac{141}{13}[/tex]

Explanation:

Given the following question:

[tex]y=mx+b[/tex]

In order to find the answer, we substitute the given information into the slope intercept then solve for b.

[tex]y=mx+b[/tex]
[tex]m=\frac{-9}{-13}[/tex]
[tex]y=-6[/tex]
[tex]x=7[/tex]
[tex](7,6)=(x1,y1)[/tex]

Substitute:
[tex]-6=\frac{-9}{-13} (7)+b[/tex]
[tex]\frac{-9}{-13} \times\frac{7}{1} =\frac{63}{13}[/tex]
[tex]\frac{63}{13}+b=6[/tex]
[tex]\frac{63}{13} -\frac{63}{13} =0[/tex]
[tex]6-\frac{63}{13} =-\frac{141}{13}[/tex]
[tex]b=-\frac{141}{13}[/tex]

Hope this helps.

The electric potential at point b experienced by the charge cab be determined using the formulas given.

The electric potential of a point charge is the work done in moving the charge from infinity to certain point against the electric field.

V = Ed

V = (F/q)d

V = (Fd)/q

where;

Thus, the electric potential at point b experienced by the charge cab be determined using the formulas given.

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Answer:

False

Explanation:

A convergent plate boundary formed the Himalaya Mountains.

The photovoltaic (PV) panel system which would be best to use in the Los Angeles area is no tracking, tilted west.

A PV panel system is an abbreviation for photovoltaic (PV) panel system and it is also referred to as a photovoltaic module, solar cell panel, or solar electric panel.

Basically, a PV panel system is an assembly of photovoltaic cells that transforms light energy (sunlight) obtained directly from the Sun into electrical energy (electricity).

In this scenario, the photovoltaic (PV) panel system which would be best to use in the Los Angeles area is no tracking, tilted west because it prevent brownouts.

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Answer:

Short answer, because copper wire does not have high resistance.

Explanation:

Answer:

Correct answer of the question is B .

Answer:

Student A is correct

Explanation:

Colored objects look the way they do because of reflected light. When sunlight is shined on a green leaf, the violet, red and orange wavelengths are absorbed. The reflected wavelengths appear green. In each case we are seeing the complementary colors to the ones absorbed.

Answer:

the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in the transfer of heat.

Explanation:

Answer:

"In Step 1, you will observe the temperature of the solid water will increase until it gets to B. While in B, the temperature will remain constant but the solid water will start melting into liquid water. In step 2, the ice water will completely melt so that in C it is all liquid water. The temperature will increase if the energy increases while it’s in C."

Explanation:

As per the details given, In Step 1, you will observe the temperature of the solid water will increase until it gets to B. While in B, the temperature will remain constant but the solid water will start melting into liquid water. The correct option is C.

The temperature of solid ice rises as a result of thermal energy absorption until it approaches the melting point (B on the graph).

As the ice turns to liquid water at this moment, the temperature stays the same.

Because the energy is being utilised to break the intermolecular bonds holding the solid structure together rather than increasing the kinetic energy (temperature) of the particles, this phase transition doesn't involve a change in temperature.

Once all of the ice has melted and turned into liquid water (point C on the graph), adding more thermal energy will in fact raise the temperature of the liquid water, increasing both temperature and kinetic energy.

Thus, the correct option is C.

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Answer:

I believe the answer is GPS

Explanation:

Diversity involves the inclusion of people which have various backgrounds and differences.

This involves people from a range of different social and ethnic backgrounds and of different genders, etc living in a given area at a given time.

It is best for all South Africans to accept and honour diversity as discrimination is wrong and individuals are unique and equal.

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(a) The height of the cliff will be 8.26 meters.

(b) The time would it take to reach the ground will be 0.717 sec.

The change of displacement with respect to time is defined as the velocity. Velocity is a vector quantity. it is a time-based component.

(a) The height of the cliff will be 8.26 meters.

According to Newton's second equation of motion

[tex]\rm H =ut-\frac{1}{2} gt^2 \\\\ \rm H =8\times 2.35-\frac{1}{2} 9.81 (2.35)^2\\\\\rm H =8.16 \; m[/tex]

Hence The height of the cliff will be 8.26 meters.

(b)The time would it take to reach the ground will be 0.717 sec.

We must have the final velocity to find the time so;

[tex]\rm v^2=u^2+2gh\\\\ \rm v^2=8^2+2\times 9.81 \times 8.6 \\\\ \rm v= \sqrt{8^2+2\times 9.81 \times 8.6}\\\\\rm v=15.03 \;m/sec[/tex]

According to Newton's third equation of motion ;

[tex]\rm v=u-gt \\\\ \rm t=\frac{v-u}{g} \\\\ \rm t=\frac{15.03-8}{9.81} \\\\ \rm t=0.717 sec.[/tex]

Hence the time would it take to reach the ground will be 0.717 sec.

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Answer:

(a)A person moves a distance of 3 km towards east, then 2 km towards north and then 3.5 km towards east.

Find :

(i) the distance covered by the person

3 km+2km+3.5km

And at least total distance 8.5 km

___________________________

(ii) the displacement of this motion.

Displacement is the length of the shortest path between the initial and the final position. It is a vector quantity (Vector quantities are the ones which have both magnitude,called speed and direction)

Here displacement can be found out using Pythagorean theorem

Displacement 2=2²+6.5²

Displacement=√4+42.25

Displacement=√46.25-6.8(approx)

___________________________

(b) Name the type of motion in which a body has uniform speed but not uniform velocity ?

In circulation motion body has constant speed but do not have constant velocity.

[tex]\large{{\bold{ \underline{ \underline{ \overline{ \overline{ \red{☆Solution :—}}}}}}}}[/tex]

↪Total energy = 750 J

↪Efficiency = 50%

↪Wasted energy = 50% [ 100% - 50%]

Amount of wasted energy

↦ 750 x 50%

↦ 750 x 0.5

↦ 375 J