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Illusion [34]
3 years ago
8

Help please? thank you

Physics
1 answer:
Furkat [3]3 years ago
4 0

Hey!

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

\Large\boxed{\mathsf{D.~The~Ability~To~Do~Work}}

In physics, energy is classified as doing some form of work. We classify energy as:

  • Chemical Energy
  • Thermal Energy
  • Potential Energy
  • Thermal Energy
  • Electrical Energy

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

Hope This Helped! Good Luck!

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Many compounds of living things, such as carbon dioxide, are formed by which kind of bond?
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Answer:

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Explanation:

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A car changes its velocity from 40.0 m/s to -5.0 m/s in 5.0 seconds what was the car average acceleration
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Answ40x-50 =2334

Explanation:

idk

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The closest stars are 4 light years away from us. How far away must you be from a 854 kHz radio station with power 50.0 kW for t
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Answer:

The distance from the radio station is 0.28 light years away.

Solution:

As per the question:

Distance, d = 4 ly

Frequency of the radio station, f = 854 kHz = 854\times 10^{3}\ Hz

Power, P = 50 kW = 50\times 10^{3}\ W

I_{p} = 1\ photon/s/m^{2}

Now,

From the relation:

P = nhf

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n = no. of photons/second

h = Planck's constant

f = frequency

Now,

n = \frac{P}{hf} = \frac{50\times 10^{3}}{6.626\times 10^{- 34}\times 854\times 10^{3}} = 8.836\times 10^{31}\ photons/s

Area of the sphere, A = 4\pi r^{2}

Now,

Suppose the distance from the radio station be 'r' from where the intensity of the photon is 1\ photon/s/m^{2}

I_{p} = \frac{n}{A} = \frac{n}{4\pi r^{2}}

1 = \frac{8.836\times 10^{31}}{4\pi r^{2}}

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We know that:

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5 0
2 years ago
Which coordinate system would be most useful for two observers (one in Michigan and one in Florida) who wants to observe the sam
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Explanation :  

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Dec = Declination

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The equatorial coordinate system is the projection of the latitude and longitude coordinate system on the celestial sphere.

Azimuth - altitude :  Azimuth - altitude define the location of an object in the sky.

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a sample contains 100 g of radioactive isotope. How much radioactive isotope will remain in the sample after 1 half-life?
kap26 [50]

Answer:

\huge\boxed{50g}

Definition:

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