Can you hear this Picture???
If you know it, you get it

Answer:

Because the sun gives off a type of light that carries energy, and light from the desk lamp does not.

Explanation:

All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat.

Answer:

The Force Of Gravity

Explanation:

The elevator's body diagram has three forces, the force of gravity, a downward normal force from you, and an upward force from the tension in the cable holding the elevator. The combined system of you + elevator has two forces, a combined force of gravity and the tension in the cable.

Answer:b but thats what I think

Explanation:

Answer: D. When you are not an expert in the field being studied in the

Explanation: D. When you are not an expert in the field being studied in the

Answer:

B

Explanation:

if the object has momentum it can be any other answer except at rest. if it's at rest, it does not have momentum

Answer:

200

Explanation:

has to be long this us just random words anseer is b. 100

Answer:

It’s D

Explanation:

Answer:

D. Moving the objects farther apart.

Answer: joule

Explanation: named after English physicist James Prescott Joule . Joule discovered the relationship between heat and mechanical work, which led to the development of the laws of thermodynamics.

Answer:theory

Explanation:

Answer:

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Explanation:

auhsbsbgsyuahsiixhwgs6

Answer:

2.5 m/s

Explanation:

you have to subtract 5 meters because you start at 5 meters. so Just take (30m-5m)/10s=2.5m/s

Frog belong to the spot 'c'

a branching diagram show the evolutionary relationships among various biological species based upon similarities and differences in their morphological or genetical characteristics.

Hence the frog is correct answer.

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Answer:

It is transverse wave

Explanation:

Explanation:

yes, it's a transverse wave

hope it helps you

Answer:

Miter joint

Explanation:

Made by fastening together usually perpendicular parts with the ends cut at an angle

Answer:

not sure but dont give up and dont take advantage of this :)

Explanation:

Answer:

A balloon with air

Explanation:

Answer:

The fundamental frequency at which the sound of speakers at the microphone produce constructive interference is 801.076458 Hz

Explanation:

For a given arrangement having constructive interference, we have;

R₁ - R₂ = 2·x = 0 + n·λ

The distance from one speaker to the microphone. R₁ = 4.50 m

The distance between the two speakers = 2.00 m

The angle formed between the direction from the microphone to the speaker closest and the directional path between the speakers = 90°

Therefore, by Pythagoras's theorem, the distance from the speaker furthest from the microphone, to the microphone, 'R₂' is given as follows;

R₂ = √(4.50² + 2.00²) = √(24.25) = 4.9244289009 ≈ 4.924

∴ R₂ ≈ 4.9244289 m

R₂ - R₁ = 4.9244289 m - 4.5 m = 0.4244289 m

For constructive interference, R₂ - R₁ =0.4244289 m = n·λ

For n = 1, we have;

R₂ - R₁ =0.4244289 m = n·λ = 1 × λ = λ

λ = 0.4244589 m

f = v/λ = 340 m/sec/(0.4244289 m) ≈ 801.076458 Hz

Therefore the lowest possible fundamental frequency at which the speakers produce constructive interference, f = 801.076458 Hz

The frequency at which the speakers produce a constructive interference is 801.076 Hz.

Given here,

[tex]R_1[/tex]- The distance from one speaker to the first microphone = 4.5 m

[tex]R_2[/tex] - The distance between microphone and second speaker = ?

The distance between the speakers = 2 m

From Pythagorean theorem,

[tex]R_2= \sqrt {4.50^2 + 2.00^2}\\\\R_2 = \sqrt{24.25} \\\\R_2= 4.924[/tex]

So,

[tex]R_2 - R_1 = 4.9244 \, {\rm m} - 4.5 \, {\rm m} \\\\R_2 - R_1 = 0.4244 \, \rm m[/tex]

For constructive interference,

[tex]R_2 - R_1 = m\lambda[/tex]

Since, m = 1

λ = 0.4244 m

Now, frequency can be calculated by the formula,

[tex]f = \dfrac v\lambda[/tex]

So,

[tex]f = \dfrac {340{\rm \ m/sec}}{(0.4244\; \rm m) }\\\\f = 801.076{\rm \ Hz}[/tex]

Therefore, the frequency at which the speakers produce a constructive interference is 801.076 Hz.

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Answer:

The force exerted by the rope on the bucket of water is 66.195 N.

Explanation:

Given;

mass of the bucket, m = 4.5 kg

acceleration of gravity, g = 9.81 m/s²

upward acceleration of the bucket, a = 4.9 m/s²

The upward force applied on the bucket by the rope is calculated as;

F = ma + mg

F = m(a + g)

F = 4.5(4.9 + 9.81)

F = 4.5(14.71)

F = 66.195 N

Therefore, the force exerted by the rope on the bucket of water is 66.195 N.

Given :

Our weight is 600 Newton on the earth.

To Find :

How far should you go from the center of the earth so that it will be 300 Newton​.

Solution :

Acceleration due to gravity at depth d is given by :

[tex]g' = g( 1 - \dfrac{d}{R_e})[/tex]

At earth surface, mg = 600 N   ...1)

At depth d, mg' = 300 N            ...2)

Dividing 1) and 2), we get :

[tex]\dfrac{g}{g'} = \dfrac{600}{300}\\\\\dfrac{g}{g'} = 2\\\\g = 2g'\\\\g = 2\times g\times ( 1 - \dfrac{d}{R_e} )\\\\1 - \dfrac{d}{R_e} = \dfrac{1}{2} \\\\d = \dfrac{R_e}{2}[/tex]

Therefore, we should go in the depth of distance half the radius of earth.

Answer:

About 79 lbs (pounds)

Explanation:

Answer:

Mass is proportional to gravity and gravity is necessary to hold an atmosphere, therefore mass would seem to be very important for the ability for a body to have an atmosphere. However there are quite a few examples that show that it doesn't require that much mass to get an atmosphere.

Explanation:

Answer + Explanation : Mass is proportional to gravity and gravity is necessary to hold an atmosphere, therefore mass would seem to be very important for the ability for a body to have an atmosphere.

Answer:

Explanation:

The mass of the car can be found by using the formula

[tex]m = \frac{f}{a} \\ [/tex]

f is the force

from the question we have

[tex]m = \frac{3000}{3} = 1000 \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

Burning wax

Explanation:

because in burning, wax reacts with oxygen present in the surrounding and forms carbon dioxide and ash

Answer:

machine

Explanation:

Answer:

a PDF is what u use to upload an assignment to turn it in to get graded

Answer:

D

Explanation:

Just did it

The particles model of light supports the the photoelectric effect, where, light in the form of tiny packets called photons when hit on a metal surface it ejects electrons.

Photoelectric effect is discovered by Albert Einstein. When a light ray hit on a solid surface, the photon or light particle emits from the surface which is having the equal energy as that of the incident photon.

According to wave -particle duality of matter, light can exhibit both particle and wave nature. If light behaves as a particle of specific energy, the light particle is called photon.

Stars emit light in different wavelengths of visible light at different temperatures. The wavelength is equal to the speed of light divided by the frequency. The excitation of electron depends on the temperature also. This effect indicating the particle nature of light.

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Answer:

The First law of motion

Explanation:

The firat law states that an object either remains at rest or continues to move at a constant velocety unless acted upon by an external force