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Snowcat [4.5K]
4 years ago
8

The scale is 1:30 and their are 10 boulders. How many boulders are their in the real pond

Physics
1 answer:
Alenkasestr [34]4 years ago
7 0

Answer:

the correct answer is C

Explanation:

When we express that the scale is 1:30 we mean that the objects of the realization are reduced by a factor of 30 in the graph, for example a distance of 30 cm in the graph is represented by a distance of 1 cm.

Therefore something that in the graph has n value to bring it to real size must be multiplied by the scale.

Applying this to our case if there is

               10 boulder on the chart

in reality there are #_boulder = 10 30

                                #_boulder = 300 boulder

so the correct answer is C

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A photon has momentum of magnitude 8.30×10−28 kg⋅m/s . Part APart complete What is the energy of this photon? Give your answer i
d1i1m1o1n [39]

Answer with Explanation:

We are given that

Momentum of photon=8.3\times 10^{-28} kg.m/s

a. We have to find the energy of this photon.

Speed of photon=c=3\times 10^8 m/s

We know that

Momentum=p=\frac{h}{\lambda}

Where

h=6.63\times 10^{-34}J-s=Plank's constant

\lambda=Wavelength of photon

\lambda=\frac{h}{p}

\lambda=\frac{6.63\times 10^{-34}}{8.3\times 10^{-28}}

\lambda=7.99\times 10^{-7} m

E=\frac{hc}{\lambda}

E=\frac{6.63\times 10^{-34}\times 3\times 10^8}{7.99\times 10^{-7}}

E=2.49\times 10^{-19} J

Hence, the energy of photon=2.49\times 10^{-19} J

B.Energy of photon in electron volt=\frac{2.49\times 10^{-19}}{1.6\times 10^{-19}}=1.55 eV

Energy of photon=1.55eV

C.Wavelength of photon =\lambda=7.99\times 10^{-7}m

6 0
4 years ago
Which type of reaction does this diagram represent?
Ugo [173]

The diagram represents a chain reaction that is caused by nuclear fission.

<h3>What is a nuclear fission reaction?</h3>

A nuclear fission reaction is a reaction in which the nucleus of a larger atom is split into two or more smaller nucleus of atoms.

Nuclear fission can proceed in the form of a chain reaction in which the products of the first fission reaction are used to initiate further fission reactions.

Therefore, the diagram represents a chain reaction that is caused by nuclear fission.

Learn more about nuclear fission at: brainly.com/question/22155336

#SPJ1

4 0
2 years ago
Read 2 more answers
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IgorLugansk [536]
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3 0
4 years ago
A typical atomic polarizability is 1 × 10-40 (C·m)/(N/C). If the q in p = qs is equal to the proton charge e, what charge separa
Alenkasestr [34]

Answer:

s = 6.25 10⁻²² m

Explanation:

Polarizability is the separation of electric charges in a structure, in the case of the atom it is the result of the separation of positive charges in the nucleus and the electrons in their orbits, macroscopically it is approximated by

                p = q s

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let's calculate

              s = 1 10⁻⁴⁰ / 1.6 10⁻¹⁹

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We see that the result is much smaller than the size of the atom, therefore this simplistic model cannot be taken to an atomic scale.

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This is your answer.

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