i’ll give brainliest!! please help and answer correctly! plsss answer quick

Explanation:

hug is not the only solution to help someone you can take them to Peaceful place and sit with them saying nothing.

please find ur answer in the attached image, mark as brainliest if it helps.

Answer:

wavelength = (3×10^8 m/s)(6×10^5 Hz)

= 1.8×10^14 m

Answer: [tex]30.09\times 10^{-15}\ C[/tex]

Explanation:

Given

The first charge is [tex]q_1=-6\ C[/tex]

Attraction force [tex]F=65\ N[/tex]

the second charge is at [tex]0.005\ m[/tex] away

Suppose the second charge is [tex]q_2[/tex]

The electrostatic force is given by

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]

Insert the values

[tex]65=\dfrac{9\times 10^9\times 6\times q_2}{[5\times 10^{-3}]^2}\\\\\Rightarrow q_2=\dfrac{65\times 25\times 10^{-6}}{54\times 10^9}\\\\\Rightarrow q_2=\dfrac{1625\times 10^{-6-9}}{54}\\\\\Rightarrow q_2=30.09\times 10^{-15}\ C[/tex]

Answer:

A

Explanation:

In a wave phenomenon, energy can move from one location to another, yet the particles of matter in the medium return to their fixed position. A wave transports its energy without transporting matter.

Answer:

9.0 m

Explanation:

Applying

V = kq/r......................... Equation 1

Where V = Electric potential, q = charge, r = distance, k = Coulomb's constant.

make r the subject of the equation

r = kq/V................... Equation 2

From the question,

Given: q = 1.00×10⁻⁵ C, V = 10000 V

Constant: k = 9.0×10⁹ N⋅m²/C²

Substitute these values into equation 2

r = (9.0×10⁹×1.00×10⁻⁵)/10000

r = 9.0 m

Answer:

9.0

Explanation:

Answer:the specific heat is the measure of how much heat per unfit mass required to raise the temperature by 1 degrees Celsius.the formula is given as Q= cm T where

Q= the amount of heat added

C= specific heat of a substance

T= change in temperature in degrees Celsius

Q=(4186 j/kg degrees Celsius (.109 kg) (8.93- degrees Celsius)=4974.53J

Explanation:

The mass of the copper coin placed in 101g of water is 135.3g.

The mass of the copper coin can be calculated using the following expression:

Since; Q = mc∆T

Where;

mc∆T (water) = mc∆T (copper)

According to this question;

COPPER METAL:

WATER:

101 × 4.18 × 8.39 = (0.385 × m × 68)

3542.09 = 26.18m

m = 3542.09 ÷ 26.18

m = 135.3g

Therefore, the mass of the copper coin placed in 101g of water is 135.3g.

Learn more about specific heat at: https://brainly.com/question/1209542

Answer:

50,000

Explanation:

when we say significant digits we mean the numbers that matter when stating the value of the number.

0.00030 can be written as 0.0003 without affecting it's value, the last zero is not significant.

50,000 all of the numbers here are significant to its value if we take away a zero it becomes 5,000 which is not equal to 50,000. so every digit here is significant

100.0300 can be written as 100.03 without loosing any value

500.00 can be written as 500 without loosing any value. ( think of this as $500.00, this also equals $500)

Answer:

Neodymium (Nd)

Explanation:

An element is made up of atom, which contains three subatomic particles namely; proton, electron, and neutron. In a neutral atom, the number of protons determines the atomic number of that element and the atomic number of an element is the identity of that element in the periodic table.

Hence, a change in the proton number of an element means a change in the atomic number and ultimately a change of that element. In this question, Europium (Eu) element with atomic number, 63, loses three protons. This means that that atom now has 60 protons, which denotes the atomic number of another element called Neodymium (Nd).

Therefore, Europium (Eu) element has become Neodymium (Nd) due to loss of protons.

The question is: You have 500g of ethyl alcohol at a temperature of -40 ° C. How much heat is needed to transform it into steam at a temperature of 150ºC?

Answer: 233700 J heat is needed to transform ethyl alcohol into steam at a temperature of [tex]-40^{o}C[/tex] to [tex]150^{o}C[/tex].

Explanation:

Given: Mass = 500 g

Initial temperature = [tex]-40^{o}C[/tex]

Final temperature = [tex]150^{o}C[/tex]

The standard value of specific heat of ethyl alcohol is [tex]2.46 J/g ^{o}C[/tex].

Formula used to calculate the heat energy is as follows.

[tex]q = m \times C \times (T_{2} - T_{1})[/tex]

where,

q = heat energy

m = mass of substance

C = specific heat

[tex]T_{1}[/tex] = initial temperature

[tex]T_{2}[/tex] = final temperature

Substitute the values into above formula as follows.

[tex]q = m \times C \times (T_{2} - T_{1})\\= 500 g \times 2.46 J/g^{o}C \times [150 - (-40)]^{o}C\\= 233700 J[/tex]

Thus, we can conclude that 233700 J heat is needed to transform ethyl alcohol into steam at a temperature of [tex]-40^{o}C[/tex] to [tex]150^{o}C[/tex].

Answer:

1. Solar wind: a stream of plasma.

2. Coronal mass ejection: includes prominences and solar flares.

3. Gamma ray photon: energy released during nuclear fusion.

Explanation:

1. Solar wind: a stream of plasma i.e charged particles such as ions, protons, alpha, and electrons that continuously escape at high speed from the Sun because of the very hot plasma contained in the solar corona.

2. Coronal mass ejection: includes prominences and solar flares that flow outward into interplanetary space. Thus, it's a release of solar wind plasma and magnetic field from the outer atmosphere or corona of the sun.

Additionally, a solar prominence is also known as filament and it can be defined as a large, bright, dense cloud of luminous ionized gas such as hydrogen, sodium calcium, etc., that erupts (extends) from the surface of the sun. It can linger in the corona for a very long time, reaching hundreds of thousands of kilometers into the sun's atmosphere (space).

3. Gamma ray photon: energy released during nuclear fusion of radioactive isotopes such as cobalt-60 or cesium-137. It has the shortest wavelength and highest energy in the electromagnetic radiation spectrum.

An electromagnetic spectrum refers to a range of frequency and wavelength that an electromagnetic wave is distributed or extends. The electromagnetic spectrum comprises of gamma rays, visible light, ultraviolet radiation, x-rays, radio waves, and infrared radiation.

Answer:

The Positions are, Pitcher, Catcher, First base, second base, third base, shortstop, left field, Center field, and right field. Some pitches that they throw are, 4-seam fastball, Curveball, 2-seam fastball, Slider, Knuckleball, 12-6 Curve, Knucklecurve, Slurve, Changeup, Splitter, Cutter, Split-finger fastball, Sinker, Palm ball, Eephus pitch, Screwball, Cut Fastball, Circle Changup, and Forkball. I think thats all the piches i know.

Answer: [tex]200\Omega[/tex]

Explanation:

Given

The battery used is 6V in magnitude

The current flow is 90 mA

If the resistance of A is [tex]100\Omega[/tex]

Net resistance of the circuit is

[tex]R_{net}=\dfrac{V}{I}\\\\\Rightarrow R_{net}=\dfrac{6}{90\times 10^{-3}}\\\\\Rightarrow R_{net}=\dfrac{200}{3}\Omega[/tex]

If A and B are in parallel then their net resistance must be   [tex]\frac{200}{3}[/tex]

[tex]\dfrac{1}{\frac{200}{3}}=\dfrac{1}{100}+\dfrac{1}{R_b}\\\\\Rightarrow \dfrac{1}{R_b}=\dfrac{3}{200}-\dfrac{1}{100}\\\\\Rightarrow \dfrac{1}{R_b}=\dfrac{3-2}{200}\\\\\Rightarrow R_b=200\Omega[/tex]

Answer:

Explanation:

If i'm not wrong and late it might be F

Answer:

9)  HIGHER  AND LOWER INTESITY, 10) speed of sound must decrease.

11) guitar the strings, flute,  12) In the mountains,  13) sound of a low frequency horn (sub-wofeer)

Explanation:

In this exercise we are asked to complete the sentences.

9) the intensity of the sound is the square of the amplitude, the missing words are

      HIGHER INTESITY

      LOWER INTENSITY

10) the speed of sound is

          v = [tex]\sqrt{\frac{B}{\rho} }[/tex]

and it is also related to temperature

         v = [tex]v_o \sqrt{1+ \frac{T}{273} }[/tex]

We must be careful since the compressibility modulus (B) changes significantly between the solid, liquid and gaseous states, if we are in the same medium, the speed of sound decreases with increasing density. For a higher density the speed of sound decreases

Also the speed of sound increases with temperature, but its effect is less,

Therefore, by having these two effects in the opposite direction, the change in density is more important, so the speed of sound must decrease.

.

11) when you listen to a guitar the strings resonate with the instrument body

   on the flute has a resonance between the blown air and the flute tube

12) When you are in front of a tall object, the sound is reflected and the echo is heard.

      In the mountains, in the squares where there is a large object that reflects in sound

13) when we hear the sound of a low frequency horn (sub-wofeer) we feel the vibration of the air, this is an effect of the pressure energy of the sound on our chest

Answer:

256

Explanation:

Answer:

29.7 m/s fast, velocity is 29.7 m/s

Explanation:

Applying,

v² = u²+2gs...................... Equation 1

Where v = final velocity, u = initial velocity, g = acceleration due to gravity, s = distance.

Given: u = 0 m/s (dropped from height), s = 45 m

Constant: g = 9.8 m/s²

Substitute these values into equation 1

v² = 0²+2×9.8×45

v² = 882

v = √(882)

v = 29.7 m/s.

Hence the stone will be moving 29.7 m/s fast and the velocity is also 29.7 m/s

Answer: Alternative D.

------------------------------------------------

To calculate the gravitational weight of other planets, the formula is used:

[tex]\large\boxed{{\mathbf{P = m \cdot g}}}[/tex]

Data:

Mass(m): 1000 N

Gravity(g): 0.61

Weight(p): ?

We replace data:

P = m × g

P = 1000 N × 0.61

P = 610 N

Result: Its weight on Pluto will be 610 Newtons (Alternative D).

Answer:

R = 12 ohm

Explanation:

Resistance are in parallel

1 ÷ Resistance = 1 ÷ 20 + 1 ÷ 30

1/R = 50/600

1/R = 1/12

R = 12 ohm

Answer:

high sunlight intensity

high wind speed

Explanation:

The environmental conditions in the UK on 7th June 2017 are improved because the electricity generation in the UK is done by the renewable sources of energy.

A renewable resource,  is a type of natural resource that will refill to replace the fraction destroyed by consumption  in a finite length of time in a human timescale, either naturally or other periodic processes.

The environmental conditions in the UK are improved on 7th June 2017 due to following reasons ;

1. The renewable energy sources create comparatively low amounts of Gas (GHG) emissions and traditional pollution,

2. During manufacture and transportation. They do emit some emissions and pollutants.

3. Using fossil fuels to generate electricity that creates no greenhouse gas emissions and lowers some forms of air pollution.

4. Increasing energy diversity and minimizing reliance on foreign fuels.

To learn more about the renewable resources, refer to the link;

https://brainly.com/question/19604560

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Answer:

60M

Explanation:

Answer:

Distancia = 50.04 metros

Explanation:

Dados los siguientes datos;

Velocidad = 10 km/h

Tiempo = 18 segundos

Para encontrar la distancia;

Conversión:

10 km/h = 10 * 1000/3600 = 2.78 m/s

Distancia = velocidad * tiempo

Distancia = 2.78 * 18

Distancia = 50.04 metros

Por lo tanto, el tren viajaría 50.04 metros antes de detenerse por completo.

Answer:

yes

Explanation:

yes

Answer:

c

Explanation:

because air have the fastest speed

Answer: C.) Alpha Particles

Explanation: Just took it <3

The maximum energy is found in visible light from the following areas of the electromagnetic spectrum. Option A is correct.

The electromagnetic spectrum is seen as colors violet, indigo, blue, green, yellow, orange, and red.  Blue light has a very short wavelength, and so produces a higher amount of energy.

Blue light in the visible zone has a very short wavelength. So that it produces a higher amount of energy that's why the blue part of visible light transfers the most energy.

Visible light from the following regions of the electromagnetic spectrum has the highest energy.

Hence, option A is correct.

To learn more about the electromagnetic spectrum refer:

https://brainly.com/question/15576247

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Answer:

D.The camera lens refracts light when it travels through the lens and bends.

Explanation:

because

Answer:

I know dude

Explanation:

-22000

Answer:

-22000

Explanation:

acellus