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3 years ago

State five effect of heat matter

1 answer:

5 0

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. ... When heat leaves all substances, the molecules vibrate slower.

I looked it up so this is googles answer

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Expresar 78 458 000 000 en notación científica

alexdok [17]

Answer:

7.8x10^10

Explanation:

divide that value by 10000000000

and you get 7.8

5 0

3 years ago

Which unit of heat was originally defined in terms of the Fahrenheit temperature scale, not the Celsius scale?

Kitty [74]

Answer:

I think the answer would be British Thermal Unit

Explanation:

It equals one degree Fahrenheit and the equation for it is 1.055 × 103 joules.

8 0

3 years ago

Read 2 more answers

What property of equality can be used to solve the equation. n – 14 = 25

Inga [223]

Do 25-14 and you will get your answer

7 0

3 years ago

What has more energy a 2 kg mass at 10 m/s or a 2 kg mass 5 m above the ground

Alexxandr [17]

Answer:

Both have same energy

Explanation:

Given:

Sample 1

Mass m = 2 kg

Velocity v = 10 m/s

Sample 2

Mass m = 2 kg

Height h = 5 m

Assume g = 10 m/s²

Find:

What has more energy

Computation:

In sample 1

Ke = 1/2(m)(v)²

Ke = 1/2(2)(10)²

Ke = 100 joule

In sample 2

Pe = mgh

Pe = (2)(10)(5)

Pe = 100 joules

Both have same energy

7 0

3 years ago

Late one night on a highway, a car speeds by you and fadesinto the distance. Under these conditions the pupils of your eyes(aver

Andrews [41]

Answer:

10432.19076 m

Explanation:

$\lambda$ = Wavelength = 660 nm

d = Diameter of pupils = 6 mm

s = Distance between lights = 1.4 m

L = Distance from observer

From Rayleigh's criteria we have

$1.22\lambda=dsin\theta$

As $\theta$ is small $sin\theta=\dfrac{s}{L}$

So, the equation becomes

$1.22\lambda=d\dfrac{s}{L}\\\Rightarrow L=\dfrac{ds}{1.22\lambda}\\\Rightarrow L=\dfrac{6\times 10^{-3}\times 1.4}{1.22\times 660\times 10^{-9}}\\\Rightarrow L=10432.19076\ m$

The car is 10432.19076 m from me

6 0

4 years ago

State five effect of heat matter​

State five effect of heat matter