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stepladder [879]
3 years ago
9

Besides gravity, what factor keeps the moon and Earth in orbit?

Physics
1 answer:
Gelneren [198K]3 years ago
7 0

Answer:

(D) Inertia

Explanation:

Inertia words with Gravity to keep the Moon, Earth and Sun All in Orbit!

                                                      <em>-Aslina</em>

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The coefficient of linear expansion for some common materials are listed in the table to the right. You would like to design an
Stella [2.4K]

Answer:

A)    T_{f} = 77.6  ⁰C ,  B) T_{f} = 341.6 C

Explanation:

The thermal expansion is given by

           ΔL = α L₀ ΔT

The thermal expansion coefficient for polycarbonate varies between 65 and 70 10⁻⁶ ⁰C⁻¹ and for cast iron 12 10⁻⁶ C⁻¹

Let's look for the final temperature that says same shift change

          ΔT = ΔL / α L₀

          T_{f} - T₀ = ΔL /α L₀

          T_{f}= T₀ + ΔL / α L₀

Let's calculate for each material

A) Polycarbonate use as thermal expansion coefficient 70 10⁻⁶ C⁻¹

         T_{f} = 23.0 + 0.0268 / (70 10⁻⁶ 7.01)

         T_{f} = 23.0 + 54.6

        T_{f} = 77.6  ⁰C

B) cast iron with thermal expansion coefficient 12 10⁻⁶ C⁻¹

      T_{f} = 23.0 + 0.0268 / (12 10⁻⁶ 7.01)

      T_{f} = 23.0 + 3.1859 10²

      T_{f} = 341.6 C

8 0
4 years ago
How many half-lives must go by for the radioactivity of this isotope to drop to (1/512) of its original value?
Mashutka [201]

Answer:

I think 32

Explanation:

7 0
3 years ago
A lamp is labelled '230 V, 100 W'. How many joules of electrical energy is changed to thermal energy and light if the lamp is sw
viva [34]

Given;

V = 230V

Power, P = 100W

time, t = 2hrs = 7200s

from,

P = IV

and Energy, E= Pt

E = 100*7200

E = 720000 Joules

E = 720KJ

4 0
3 years ago
Read 2 more answers
how does a particle differ from its anti-particle? it has opposite mass. it has opposite charge. its wave-function is the opposi
FromTheMoon [43]

An antiparticle is a subatomic particle that, by definition, has the same mass as its normal particle counterpart but the opposite magnetic moment and electric charge. An electron's antiparticle, for instance, is the positron.

The mass of an antiparticle is equal to that of the particle version, but it has the opposite charge. Antiparticles have opposite charges, baryon numbers, lepton numbers, and strangeness. A subatomic particle known as an antiparticle has the same mass as a particle of regular matter but the opposite electric charge and magnetic moment. Thus, the positron (a positively charged electron) is the opposite of the negatively charged electron.

To know more about electric charge,

brainly.com/question/11461182

#SPJ4

7 0
1 year ago
Which of the following is a chemical reaction? (Hint: Think of the table with signs of a chemical reaction.) A. A book being ope
dmitriy555 [2]
Answer is . .......”D”
7 0
3 years ago
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