What is the most common source of pollution?
gas
nuclear
coal
oil

Answer:

B- distilled water

Explanation:

Answer:

D

Explanation:

We can

The top ones being parallel gives 1/(1/30 + 1/40) = 120/7 ohms. The rightmost path in series gives 30 ohms, and then the parallel pair on the right is 1/(1/50 + 1/30) = 75/4 ohms. I = V/R => 9 / (75/4+120/7) [tex]\approx[/tex] .25A

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Answer:

4.298

Explanation:

the answer is 4.298 on acellus

Answer:

The answer is option C.Half as much

The correct answer is four times as much.

Let the friend's mass be m, then according to the question the bodybuilder's mass will be 2m.

Now they both cover the same distance but the bodybuilder takes 4s and his friend takes 2s. Hence, if the time taken by the friend is t then the bodybuilder takes 2t time.  

That means if the velocity of the bodybuilder is v then the velocity of his friend will be 2v.

Now, Power is defined as the rate of work done.

P = W/t

and work done is the change in kinetic energy.

Now the power generated by the bodybuilder is:

[tex]P_{b}=\frac{\frac{1}{2}2mv^{2} }{2t} \\\\P_b=\frac{mv^2}{2t}[/tex] ............(1)

power generated by the friend is :

[tex]P_{f}=\frac{\frac{1}{2}m(2v)^{2} }{t} \\\\P_b=\frac{4mv^2}{2t}[/tex].............(2)

Comparing (1) and (2) we get:

The friend generates four times as much power as the bodybuilder.

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Answer:

a. -40 kV b. -6.408 fJ c. 2.77 × 10⁶ m/s

Explanation:

a) Change of potential for this displacement (A =» B)?

The potential energy change ΔV = -EΔx where E = electric field strength = 8 × 10⁴ V/m and Δx = displacement of charge = 0.5 m

So, ΔV = -EΔx

ΔV = -8 × 10⁴ V/m × 0.5 m

ΔV = -4 × 10⁴ V

ΔV = -40 × 10³ V

ΔV = -40 kV

B) Change of P.E for this displacement (A =» B)?

The change in potential energy ΔU = qΔV where q = proton charge = +1.602 × 10⁻¹⁹ C and ΔV = change in potential = -4 × 10⁴ V

So, ΔU = qΔV

ΔU = +1.602 × 10⁻¹⁹ C × -4 × 10⁴ V

ΔU = -6.408 × 10⁻¹⁵ J

ΔU = -6.408 fJ

C) The speed of proton after the displacement?

From the conservation of energy,

The electric potential energy change of the charge equals its kinetic energy change

ΔK + ΔU = 0

ΔK = -ΔU

ΔK = -(-6.408 × 10⁻¹⁵ J)

K₂ - K₁ = 6.408 × 10⁻¹⁵ J

where K₁ = initial kinetic energy of proton = 0 J (since it starts from rest)

K₂ = final kinetic energy of proton = 1/2mv² where m = mass of proton = 1.673 × 10⁻²⁷ kg and v = speed of proton

K₂ - K₁ = 6.408 × 10⁻¹⁵ J

1/2mv² - 0 = 6.408 × 10⁻¹⁵ J

1/2mv² = 6.408 × 10⁻¹⁵ J

v² = 2(6.408 × 10⁻¹⁵ J)/m

v = √[12.816 × 10⁻¹⁵ J)/1.673 × 10⁻²⁷ kg]

v = √[7.66 × 10¹² J/kg]

v = 2.77 × 10⁶ m/s

[tex] \huge \mathrm{ Answer࿐ }[/tex]

The correct option is :

[tex]\hookrightarrow[/tex] 62 cm in back of the mirror

_____________________________

Plane mirror always make a virtual and erect Image which is as far from the mirror as the object is !

_____________________________

[tex]\mathrm{ \#TeeNForeveR}[/tex]

Answer:

P = 120 W

Explanation:

Force required to lift the book, F = 180 N

It is lifted 1 m above the floor in 1.5 s

We need to find the power of the student. Power is equal to work done divided by time taken. So,

[tex]P=\dfrac{Fd}{t}\\\\P=\dfrac{180\times 1}{1.5}\\\\P=120\ W[/tex]

So, the required power is equal to 120 W.

Answer:

Faster

Explanation:

Answer:

please give me brainlist and follow

Explanation:

The measuring sensitivity of liquid-in-glass thermometers increases with the amount of liquid in the thermometer. The more liquid there is, the more liquid will expand and rise in the glass tube. For this reason, liquid thermometers have a reservoir to increase the amount of liquid in the thermometer.

Answer:

Following are the responses to the given question:

Explanation:

Following are the difference in the speed and accuracy:

The biggest difference was its tone between both the cup method as well as the Morse code. One should talk using cup system and sequence system and let its covering be understood in Morse code, just a series of beeps weren’t tangible... Secondly, a method of cup involves a range string. Rukun Negara is often distributed by cable, but this is a greater range. It reaches concurrently in those other areas.

In the case of using the string method for the block, its distance and stiffness of the string are limited and the barriers are eliminated. It will certainly be convenient and clearer if one utilizes Sign language.

If two experts are acting like such a machine on both sides, their information between both the 2 persons is smoother and quicker as they will not have to wait for data from a third person which may create another pause at the time.

Morse code is faster, eventually. For some very small periods when sensitive information is not transmitted, strings or cup methods must be reserved.

Answer:

α=atr

the relationship between linear accelaration and linear accelaration is proportional. The greater the angular acceleration is, the larger the linear (tangential) acceleration.

Answer: b.) 3 hertz

explanaition: you subtract 345 from 342

A. first law of motion

Explanation:

hope this helps :)

Answer:

F = 1 N

Explanation:

Given that,

The weight of an Apple, W = 1 N

We need to find the net force acting on the apple when it is in free fall. We know that, the force acting on an object under free fall is equal to its weight. So,

F = W = 1 N

Hence, the net force acting on the Apple is 1 N.

(A) It will 100 times larger than the original force.

As the square of the distance between the two charges increases, the force's strength decreases. Because of this, if the gap between the two charges is doubled, the attraction or repulsion between them weakens and drops to one-fourth of its initial strength. Thus, option A is correct.

As their separation rises, so does the force of attraction or repulsion between two objects.  Additionally, when the spacing between things gets smaller, the force of attraction or repulsion between the objects gets stronger. Distance affects electrical forces significantly.

Gravitational forces will be reduced as separation distance increases because they are inversely proportional to the square of the distance between the two interacting objects. When two things are moved apart, their gravitational attraction to one another also lessens.

Therefore, The new force will be 100 times more than the original.

Learn more about force here:

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Answer: Neptune's distance from the Sun is greater than Saturn's.

Explanation:

The sentence that best describes data that would suggest methane is frozen on Neptune is that Neptune's distance from the Sun is greater than Saturn's.

Since Neptune is farther away from the Sun than Saturn, it implies that it has a colder temperature than Saturn and thus would suggest that methane is frozen on Neptune.

Answer:

A. 1.78 m

Explanation:

Given;

initial velocity of the, u = 12 m/s

angle of projection, θ =  30°

the range of the projectile, R = 7.5 m

To obtain the height through which the projectile lands, we must calculate the maximum height reached by the projectile.

[tex]H = \frac{u^2\ sin^2\theta}{2g} \\\\H = \frac{(12)^2\times (sin(30))^2}{2 \times 9.8} \\\\H = \frac{144 \times (0.5)^2}{19.6} \\\\H = 1.84 \ m[/tex]

Therefore, the height is most nearly 1.78 m

Answer:

Oxide

Explanation:

Ozone and oxygen are oxidising agents

[tex]O _{3} \: \: ozone \\ \\ O _{2} \: \: oxygen[/tex]

Answer:

Oxygen

Explanation:

The name oxidation actually originates from the word oxygen so the question answers it's self.

In case you don't know what oxidation is:

Oxidation occurs when an atom, molecule, or ion loses one or more electrons in a chemical reaction. When oxidation occurs, the oxidation state of the chemical species increases. Oxidation doesn't necessarily involve oxygen! Originally, the term was used when oxygen caused electron loss in a reaction.

Have a great day <3

Answer:

It is Limiting Reactant

Explanation:

Answer:

Yes Kinetic and Potential energy

Answer:

speed=10m5s=2m/s for the antelope

Answer:

H₀ = 1.6 x 10⁻¹⁸ s⁻¹

Explanation:

The Hubble's Constant can be found by the following formula:

[tex]v = H_o D\\\\H_o = \frac{v}{D}[/tex]

where,

H₀ = Hubble's Constant = ?

v = speed of galaxy = 30000 km/s = 3 x 10⁷ m/s

D = Distacance = 600 Mpc = (6 x 10⁸ pc)(3.086 x 10¹⁶ m/1 pc)

D = 18.52 x 10²⁴ m

Therefore,

[tex]H_o = \frac{3\ x\ 10^7\ m/s}{18.52\ x\ 10^{24}\ m}[/tex]

H₀ = 1.6 x 10⁻¹⁸ s⁻¹

Answer:

It's change will form the nitride ion

Answer:

Sedimentary rocks.

Explanation:

A rock cycle can be defined as a concept used to describe the continuous process that leads to a rock's creation, formation, transformation from one form to another, destruction and reformation over a specific period of time. The natural phenomenons that influences the rock cycle are weathering, plate tectonic activity, erosion, etc.

A fossil can be defined as the mineral impression or remains of living organisms such as plants and animals that are prehistoric in nature.

Basically, the three (3) main types of rocks are; igneous rock, sedimentary rock and metamorphic rock.

Sediments come from living organisms such as plants to form organic sedimentary rocks and they are usually formed at pressure and temperature that doesn't destroy the fossils contained therein. Organic sedimentary rocks includes chalk, fossiliferous, coal, diatomite, etc. Also, some examples of inorganic land-derived sedimentary rocks are conglomerate, brescia and sandstone.

Hence, an organic sedimentary rock is a type of rock that contains or comprises of fossils.

Explanation:

Sound does not travel at all in space. The vacuum of outer space has essentially zero air. Because sound is just vibrating air, space has no air to vibrate and therefore no sound. ... Radio is a form of electromagnetic radiation just like light and can therefore travel through the vacuum of space just fine

Answer:

False.

Explanation:

First off, the Earth orbits the sun. The sun does not orbit the Earth.

Also, it takes 365 days (1 year) for the Earth to orbit the sun.

I hope this helped.