Hey guys! Am I right? Thanks!

(Will give brainliest and report any links or answers that are irrelevant.)

Answer:

That's essentially how objects in orbits work as they move closer to the body they orbit, they accelerate faster and faster. Our penny will get so fast that, once it comes around the planet, it will be flung very far away, which will then slow it down. This is what creates an elliptical orbit.

Explanation:

Answer:

They are totally different.

Explanation:

However, sound and radio waves are completely different phenomena. Sound creates pressure variations (waves) in matter, such as air or water, or your eardrum. Conversely, radio waves are electromagnetic waves, like visible light, infrared, ultraviolet, X-rays, and gamma rays

Answer: [tex]0.75\ cm[/tex]

Explanation:

Given

Wavelength of light [tex]\lambda=500\ nm[/tex]

Screen is [tex]D=1\ m[/tex] away

Distance between two adjacent bright fringe is [tex]\Delta y=\dfrac{\lambda D}{d}[/tex]

When same experiment done in water, wavelength reduce to [tex]\dfrac{\lambda }{\mu}[/tex]

So, the distance between the two adjacent bright fringe is [tex]\Delta y'=\dfrac{\lambda D}{\mu d}[/tex]

Keeping other factor same, distance becomes

[tex]\Rightarrow \dfrac{1}{\frac{4}{3}}=\dfrac{3}{4}\quad \text{Refractive index of water is }\dfrac{4}{3}\\\\\Rightarrow 0.75\ cm[/tex]

Answer:

Initial velocity, u = 23.33 m/s

Explanation:

Given the following data;

Acceleration = 2.5 m/s²

Distance = 4 km to meters = 4000 meters

Time = 0.8 mins to seconds = 0.8 * 60 = 48 seconds.

To find the initial velocity, we would use the second equation of motion;

[tex] S = ut + \frac {1}{2}at^{2}[/tex]

Where;

S represents the displacement or height measured in meters.

u represents the initial velocity measured in meters per seconds.

t represents the time measured in seconds.

a represents acceleration measured in meters per seconds square.

Substituting into the equation, we have;

4000 = u*48 + ½*2.5*48²

4000 = 48u + 1.25*2304

4000 = 48u + 2880

48u = 4000 - 2880

48u = 1120

Initial velocity, u = 1120/48

Initial velocity, u = 23.33 m/s

Explanation:

let the length be Lcm

5−325−L = 10−530−25

L = 23cm

The image that illustrates diffraction is the one in which ray of light was passing through a narrow opening created by closing the fingers. Third image.

Diffraction refers to the bending or spreading of waves as they encounter an obstacle or pass through an aperture. It is a characteristic behavior exhibited by different types of waves, such as light, sound, or water waves.

When waves encounter an obstacle or pass through a narrow opening, they diffract and change direction. This occurs because waves exhibit wavefront interference, where different parts of the wave interact with each other. The interference causes constructive or destructive interference, resulting in the bending or spreading of the wave.

In the case of light, diffraction can be observed when light passes through a narrow slit or encounters an edge of an object. This phenomenon leads to the spreading of light waves, creating patterns of light and dark regions known as diffraction patterns.

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Answer:

this frequency is in the near UV range

Explanation:

The accelerated movement of a charge creates an electromagnetic wave, the speed of the wave is the speed of light

         c = λ f

the emitted frequency is f = 10⁶ 10⁹ Hz = 10¹⁵5 hz,

light of this frequency is in the near UV range

Answer:

[tex]\boxed {\boxed {\sf A. \ 36 \ m}}[/tex]

Explanation:

The distance an object travels is the product of its speed and time.

[tex]d=s \times t[/tex]

The object's speed is 12 meters per second and the time is 3 seconds.

Substitute the values into the formula.

[tex]d= 12 \ m/s \times 3 \ s[/tex]

Multiply. Note that the units of seconds will cancel, so we are left with meters as our units.

[tex]d= 12 \ m * 3[/tex]

[tex]d= 36 \ m[/tex]

The object travels a distance of 36 meters and choice A is correct.

Answer:

Taking moments about O:

W cos theta * 1.18 = P sin theta * (1.18 + .47)

Counterclockwise torque = Clockwise torque

W / P = 1.40 sin theta / cos theta = 1.40 tan theta

Or theta = tan^-1 (.72 W / P)

Answer:

Fluorine is the 9th element of the periodic table. If its Neutral... It'll have an atomic mass of 19. Also Since its neutral... Number of protons and Electrons will be the same which is 9. Now the Neutron number is the Mass number - The atomic no = 19-9 = 10Neutrons

Answer:

E = 4000 N/C

Explanation:

Given the following data;

Force = 0.080 N.

Charge, q = 20 microcoulomb = 20 * 10^-6 = 2 * 10^-5 Coulombs

To find the electric field strength;

Mathematically, the electric field strength is given by the formula;

Electric field strength = force/charge

Substituting into the formula, we have;

E = 0.080/0.00002

E = 4000 N/C

Answer:

C

Explanation:

During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. Hydrogen nuclei fuse to form one helium atom.

Answer:

h = 4.04 m

Explanation:

Given that,

Mass of a child, m = 25 kg

The speed of the child at the bottom of the swing is 8.9 m/s

We need to find the height in the air is the child is able to swing. Let the height is h. Using the conservation of energy such that,

[tex]mgh=\dfrac{1}{2}mv^2\\\\h=\dfrac{v^2}{2g}[/tex]

Put all the values,

[tex]h=\dfrac{(8.9)^2}{2\times 9.8}\\\\h=4.04\ m[/tex]

So, the child is able to go at a height of 4.04 m.

Explanation:

the answer is object with more mass have more kinetic energy

K/E=(1/2)mv²

it cant be the last option because it was stated in the question that the velocity is the same

Answer:

E = -477 N/C

Explanation:

Given that,

Charge, [tex]q=-4.77\times 10^{-9}\ C[/tex]

We need to find the electric field at a point 0.3 m to the right of the charge.

We know that the electric field at a distance r is given by :

[tex]E=\dfrac{kq}{r^2}\\\\E=\dfrac{9\times 10^9\times 4.77\times 10^{-9}}{(0.3)^2}\\\\E=-477\ N/C[/tex]

So, the electric field is -477 N/C.

Answer:

2 ZnS + 3O2 ---> 2ZnO + 2 SO2

Explanation:

2 ZnS + 2O2 ---> 2ZnO + SO2

There are 2 Zn atom on the LHS and 2 Zn on the RHS. Hence the Zn is balanced on both sides of the equation.

There are two S atom on the LHS but there is only one S atom on the RHS.

Hence we will balance the S atoms

2 ZnS + 2O2 ---> 2ZnO + 2 SO2

Now the oxygen is unbalanced as there are three oxygen molecule on the RHS but only two on the LHS.

Hence, the balanced equation would be

2 ZnS + 3O2 ---> 2ZnO + 2 SO2

Answer:

2,340,000 J

Explanation:

Work done can be described as when energy or force is applied to an object to cause displacement

Work done is measured in joules

1 Watt = 1 Joule / second

650 watts = 650 Joules / second

convert 650 joules to seconds by multiplying by 3600

650 x 3600 = 2,340,000 J

Explanation:

From 2s, velocity increased gradually up to 4s

Explanation:

You can simply subtract the atomic number from the mass number in order to find the number of neutrons. If the atom is neutral, the number of electrons will be equal to the number of protons.

Remember!

1. Your mass number is the total number of neutrons and protons within the atom.

2. Your atomic number is the amount of protons within the atom.

3. For neutral atoms, the electron number is the same as the atomic number.

Answer:

To determine the volume of a given beaker/calorimeter by measuring its internal diameter and depth with vernier calipers. A vernier caliper is a measuring instrument with two scales: a main scale and a vernier scale that slides over the main scale.

Explanation:

Answer:

Entonces, velocidad instantánea = | v | = 0,25 m / s

Explanation:

pregunta completa

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Solución

La velocidad instantánea está dada por,

v = dx / dt = pendiente de la curva x-t

aquí, del gráfico:

en x = 1 m ---> t = 8 s

en x = 3 m ---> t = 0 s

entonces, dx = 1-3 = -2 m

dt = 8-0 = 8 s

Entonces,

v = -2/8

v = -0,25 m / s

Dado que, pseed es una cantidad escalar.

Entonces, velocidad instantánea = | v | = 0,25 m / s

Answer: A

Explanation:

Pulmonary - is lungs

Systemic - is body system

Answer:

Well, the densities of the condensed phases, solids, and liquids, are more or less constant...

Explanation:

...and not subject to change. The condensed phases are largely incompressible. On the other hand, the density of the gaseous phase is highly variable...and is a state function of temperature, pressure, volume, and amount of gas... And gaseous phases should have an intrinsically low density in comparison to solid and liquid phases...

Solids are denser than liquids and a liquid is denser than gas while gases have the lowest density of the three phases of matter.

The particles of a solid substance are placed very close to each other. The attraction forces between the atoms within a solid are very high. This causes to the particles be immobile. The solids have a definite physical shape and finite and controlled volume. The density of the solids is highest in comparison to other states of matter.

Liquids in comparison to solids have relatively lower forces of attraction between particles. This provides the liquid to exist without definite geometry. The liquid has a definite volume and density smaller than solids.

Gases have the weakest forces of attraction between them. They do not have definite volumes and molecules are spread in large volumes. Therefore gases have the least density in comparison to other states of matter.

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Answer:

Energy transfer is the movement of energy from one location to another. For example, when electricity moves from a wall plug, through a charger, to a battery. .While energy can be transferred or transformed, the total amount of energy does not change

Answer: B) They all orbit the sun

Explanation: