Which type of power station has the fastest start up time? Coal,natural gas,nuclear or oil ?

Answers

Answer 1
Answer: natural gas is the power station that has the fastest start up time.

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Why did pangea break up ?

Answers

Because the gravitational pull from the ocean i believe
Pangea was fully assembled by the Early Permian Period, some 270 million years ago. It began to break apart about 200 million years ago, during the Early Jurassic Period, eventually forming the modern continents and the Atlantic and Indian Oceans.

As volume increases mass will__

Answers

If you're working with a solid or a liquid, the only way to increase volume
is to add more solid or liquid, so the mass must also increase.
(I don't want to get into temperature and confuse you.)

Not so with a gas.  If you want to increase the volume of a jar of gas,
all you have to do is pipe it into a bigger jar.  Gas always expands
to fill whatever you put it in.  So if you're working with a gas, you can
increase the volume with no change in the mass.


A train moving with a velocity of 87.1 km/hour North, increases its speed with a uniform acceleration of 0.250 m/s2 North until it reaches a velocity of 160.0 km/hour North. What distance did the train travel while it was increasing its velocity, in units of meters?

Answers

Answer:

2780 meters

Explanation:

First, convert km/hr to m/s.

87.1 km/hr × (1000 m / km) × (1 hr / 3600 s) = 24.2 m/s

160.0 km/hr × (1000 m / km) × (1 hr / 3600 s) = 44.4 m/s

Given:

v₀ = 24.2 m/s

v = 44.4 m/s

a = 0.250 m/s²

Find: x

v² = v₀² + 2a (x − x₀)

(44.4 m/s)² = (24.2 m/s)² + 2(0.250 m/s²) (x − 0 m)

x = 2780 m

2. A force of 24x10² N exists between a positive charge of 8x10-5C and a positive charge of 3x10C.What distance separates the charges?

Answers

Answer: 94.9 metres

Explanation:

Given that,

Force between the two charges (F) = 24x10² N

Negative charge (q1) = 8x10-5C

Positive charge (q2) = 3x10C

Distance between charges (r) = ?

Apply the formula for

F= (kq1q2) / r²

Recall that k is Coulomb's constant with a value of 9 × 10^9 Nm2C−2

Then,

24x10² N = (9 × 10^9 Nm2C−2 x 8x10-5C x 3x10C) / r²

24x10² N = (2.16 x 10^7) / r²

r² = (2.16 x 10^7 / 24x10² N)

r² = 9000

To get the value of r, find the square root

r = √9000

r = 94.868m (rounded to the nearest tenth as 94.9m)

Thus, a distance of 94.9 metres separates the charges.

true or false? constructive interfernce occurs when a crest meets up with another crest at a given location along the medium

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False , the crests do not meet up along the medium

What are 3 uses of infrared radiation.

Answers

Remote controls
Security systems
Communication systems



uses of infrared radiationUsed in night vision devices to observe animals or people using the phenomenon called infrared illumination. The observant will not know that they are being observed.Used in astronomy to observe objects that are blurred and hidden by the interstellar dust. Infrared imaging process is used here.Used in astronomical telescopes that are equipped with infrared sensors and these telescopes are used to detect distant planets that are in the dusty regions of space, as they cannot be viewed using a normal telescope. They are also used to detect objects that have had a high red-shift (shifting of wavelength towards the red end of the spectrum).
Used in infrared lamps (lamps that emit infrared radiation) and these lamps are used for drying paint, wallpapers and printing inks, to keep food warm, in heaters that are used during cold weather and in heat treatments in the field of medicineUsed in infrared lasers that produce infrared beams that can be used to read information on compact discs.Used in Infrared imaging devices that are used to obtain images of infrared radiation that are reflected or produced by objects, for example, heat insulation in buildings, sources of thermal pollution, mapping vegetation on the earth’s surface.Used in the chemical industry to determine molecular structure and composition of substances by studying their infrared emission or absorption.