help me, i don't know the answer ​

Answer:

Gamma rays

Explanation:

have the highest energies, the shortest wavelengths, and the highest frequencies. Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation.

When two charged plates are separated by a distance, the potential difference between the plates is 54 Volts.

The electric field intensity which does not increase or decrease with time or remain constant is called the uniform electric field.

Given is the plates separated by distance d = 15 cm =0.15 m, electric field E= 360 N/C.

The relation between the electric field and voltage is

E=V/d

Substitute the values into the expression to get the potential difference V,

V = 360 x 0.15

V = 54 Volts

Thus, the potential difference between the plates is 54 Volts.

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Answer: D. A bobcat fights a wolf to protect younger bobcats.

An electron absorbs energy and emits electromagnetic radiation based on its transition.

This is defined as a sub-atomic particle which has a negative charge. It's involved in a chemical reaction which results in the formation of new substances.

Classical physics predicted that at a high enough temperature, ultraviolet light would be emitted. instead white light was emitted resulting in the ultraviolet radiation.

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strong winds that come together from different directions

Answer:

1 Conditions that result in the emission of electrons from a conductor:

Heating the conductor to a suitable temperature

Exposing the conductor to a strong light

Subjecting the conductor to a very high applied voltage

Subjecting the conductor to high-speed electrons from another source

2 Both diodes and triodes influence current flow and contain electrodes. Diodes involve only two active pieces; triodes contain three electrodes within a tube. Current can flow through a diode in only one direction. Diodes tend to act as rectifiers. In a triode, the third electrode is a grid located between the cathode and the anode. A small difference of potential between the grid and the cathode controls the number of electrons that reach the anode. Adjusting the charge on the grid affects the number of electrons that can reach the anode. Triodes tend to act as amplifiers.

3  a Transmitting antenna

b Modulator

c Oscillator

d Microphone

4  a RF amplifier

b Receiving antenna

c Loudspeaker

d Demodulator

e Tuner

5 hue, saturation, intensity/brightness

6 red, blue, green

Explanation

PF right from PF all 6 answers

There are four main ways in which electrons are emitted from the conductor including Thermionic emission, Electric field electron emission,  Photoelectric emission, and Secondary emission.

A conductor is a substance or material which allows electricity to flow through it. In a conductor, the electrical charge carriers, usually electrons or ions or charged particles, move easily from one atom to another atom when the voltage is applied.

Thermionic emission involves large amount of external energy in the form of heat is supplied to release free electrons from the metal.

In the electric field electron emission, electrons are emitted from the metal surface when the metals are placed in a very strong electric field.

During photoelectric emission, light is absorbed by the metals and this provides energy to the valence electrons in the conductor which break their bond with the parent atom and which are then released from the atom.

Valence electrons have kinetic energy, however they don't have enough energy to escape from the atom. During secondary emission, a high-speed electron from the conductor is bombarded with an atom, which provides energy for the valence electrons to break their bonds with their parent atom which are then released from the atom.

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Answer:

i need help

Explanation:

No, since their gravity is powerful enough to keep them together even while the universe expands as a whole. Space is not expanding within clusters of galaxies.

A galaxy is a massive clump of gas, dust, and billions of stars and their solar systems bound together by gravity.

No, since their gravity is powerful enough to keep them together even while the universe expands as an entire.

Hence,space is not expanding within clusters of galaxies.

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Answer:

It provides a more durable finish than liquid paints can offer, while still providing an attractive finish

Answer: neutrinos

Explanation:

Let k be the spring constant.

• When the spring is compressed by 11 cm = 0.11 m, it stores

1/2 k (0.11 m)²

of potential energy.

• When it's compressed by 66 cm = 0.66 m, it stores

1/2 k (0.66 m)²

of potential energy.

Then the ratio of these potential energies is

(1/2 k (0.66 m)²) / (1/2 k (0.11 m)²) = 36

which is to say, the spring stores 36 times more energy when it's compressed by 66 cm compared to 11 cm.

The role of friction is of great importance when creating safety ramps and escalators because with the help of friction things move.

It is important to move objects slowly on ramps and escalator because the ramps and escalator moves object in the opposite direction of gravity. If we did not move objects slowly, then the objects or a person get damaged.

So we can conclude that the role of friction is of great importance when creating safety ramps and escalators because with the help of friction things move.

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[tex]\\ \rm\Rrightarrow C=\dfrac{\epsilon_oA}{d}[/tex]

[tex]\\ \rm\Rrightarrow C=\dfrac{0.2(0.001)}{0.04}[/tex]

[tex]\\ \rm\Rrightarrow C=\dfrac{0.0002}{0.04}[/tex]

[tex]\\ \rm\Rrightarrow C=0.005F[/tex]

[tex]\\ \rm\Rrightarrow C=5mF[/tex]

Explanation:

Given data :

Given data :Plate area = 0.2m^2

Given data :Plate area = 0.2m^2Distance between plates=0.04m

Given data :Plate area = 0.2m^2Distance between plates=0.04mdielectric constant = 0.001 C/vm

Given data :Plate area = 0.2m^2Distance between plates=0.04mdielectric constant = 0.001 C/vmRTF=Capacitance.

Given data :Plate area = 0.2m^2Distance between plates=0.04mdielectric constant = 0.001 C/vmRTF=Capacitance. SolutionFirst formula for capacitance .

Answer:

Kelvin to Celsius: C = K - 273 (C = K - 273.15 if you want to

Answer:

The difference phase = 3 λ

In terms of wavelength the difference of phase is zero so the sources would experience "constructive" interphase at that point.

If the light from the sources differed by 1/2, 3/2, 5/2 wavelengths  etc, then the sources would be out of phase at that point.

Answer:

when the ball falls down

Explanation:

because gravity is a very strong Force

Answer:

a

Explanation:a

The value of x in the given right triangle in a semicircle is determined as 21.

The triangle in a semicircle is always a right angle triangle.

From the figure shown, we can say that the triangle  G J K is right triangle and m<K = 90degrees.

Given that m<K = 4x + 6, we will can use the following equation to find the value of x as shown:

4x + 6 = 90

4x = 90 - 6

4x = 84

x = 21

Thus, the value of x in the given right triangle in a semicircle is determined as 21.

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Explanation:

the answer is 2.46 × 10^12

Answer:

The answer is C.

Explanation:

Answer:

[tex]\huge\boxed{\sf Option \ 3}[/tex]

Explanation:

[tex]\rule[225]{225}{2}[/tex]

Matching each space mission with the correct milestone

A space mission is a mission that takes an individual, animal, a thing or material out of earth using a spaceship. This mission is always carried out with a desire to find out more about the galaxy earth is a member of and to learn about other planets.

In conclusion, the list above is the accurate Matching of each space mission with the correct milestone.

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Answer:

See attachment below, Hope it helps!

Answer:

The statements that describe the relationship between history and geography are:

Geography is the setting of the history's story.

Geography plays a role in historic events.

History affects geography, and geography influences history.

The second, third, and the fifth statements are the correct answers.

Explanation:

first 1=2=5=3=0=5=8=7=x=y

The generator power will be 59 kW. Power drop is the main factor for finding the generated power.

The maximum power input allowed to pass through a piece of equipment is known as the equipment's power rating.

Power drop = 5%

The relation of the frequency change with the power drop is;

[tex]\rm \frac{df}{dp} =5\%\\\\ \frac{f_{rated-f_1}}{P_{rated}-P_1}=0.05\\\\ \frac{f_{rated-60}}{100-61}=0.05\\\\ f_{rated}=61.95[/tex]

For the grid frequency, 59.9 Hz

[tex]\rm \frac{f_{rated-f_2}}{P_{rated}-P_2}=0.05[/tex]

[tex]\rm \frac{61.95-f_2}}{100-P_2} =0.05\\\\ 100-P_2 =20(61.95-59.9)\\\\P_2=100-41 \\\\ P_2=59 \ kW[/tex]

Hence, the generator power will be 59 kW.

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Answer:

A & C

Explanation:

Answer:

A and C

Explanation:

Sustainable buildings are generally less expensive over the lifetime of the building, due to lower energy costs in production of the materials and lower energy bills. Option A is correct.

Sustainable buildings refer to both a structure and the implementation of environmentally responsible and resource-efficient methods.

Sustainable buildings are generally less expensive over the lifetime of the building, due to lower energy costs in production of the materials and lower energy bills,

Hence,option A is correct.

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Answer:

Carbohydrates - monosaccharides.

Lipids - glycerol and fatty acids.

Nucleic acids - nucleotides.

Proteins - amino acids.

Explanation:

Answer:

- Allows you to talk and to smell.

- Warms air to match your body temperature and moisturizes it to the humidity level your body needs.

- Delivers oxygen to the cells in your body.

- Removes waste gases, including carbon dioxide, from the body when you exhale.

- Protects your airways from harmful substances and irritants

Student 2 is correct. The Benz is not traveling at constant velocity. At the end of two seconds the speed would have increased by 4.4 m/s.

The final velocity of the benz is determined by using first kinematic equation;

v = u + at

where;

v = 2.2 + (2.2 x 2)

v = 6.6 m/s

Δv = 6.6 m/s - 2.2 m/s = 4.4 m/s

Thus, student 2 is correct. The Benz is not traveling at constant velocity. At the end of two seconds the speed would have increased by 4.4 m/s.

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[tex] \bold{\underline{\underline{\underbrace{Answer}}}} [/tex]

5 images

Explanation:

⠀

⠀

What is reflection of light?

The reflection of light is the phenomenon in which the rays of light falls on the object and change it's path.

⠀

How image is formed in plane mirror?

When you look at the mirror the image is formed behind the mirror and it is virtual. The light from the object which reaches the mirror gets reflected back.

⠀

⠀

The formula to find the no. of images between the 2 plane mirror at any angle θ.

[tex] \sf No. \: of \: images = \frac{360 \degree}{ \theta} - 1[/tex]

According to the question the plane mirror is inclined at 60° angle.

Substituting the required values.

[tex] \sf \large \frac{ \cancel{360} \small \: \: 6}{ \cancel{60}} - 1 \\ \\ \sf \large 6 - 1 \\ \\ \boxed{ \frak{ \implies 5} }[/tex]

The 2 plane mirror will form 5 images inclined at 60° angle.