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3 years ago

What is the radius of a hemisphere with a volume of 61326 ft^3

Physics

1 answer:

Klio2033 [76]3 years ago

7 0

Calculator soup says the answer is 30.82

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What is the speed of the object in the graph? Explain

Nikolay [14]

Answer:

0.8m per second

Explanation:

we measure speed as distance over time

distance=8m

time=10s

therefore speed = 8/10

=0.8m per second

5 0

3 years ago

Read 2 more answers

A wave has a period of 2.0 s. what is its frequency?

Elden [556K]

Answer: Frequency of 1 ÷ 2 = 0.5 Hz.

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3 years ago

The energy needed to change an amount of a substance from a solid to a liquid is the

Korvikt [17]

Answer:

Heat or thermal energy!!!

Explanation: When heat is added the particles speed up at rapid rates causing the state of the object to change nd in order to melt it must be heated.

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4 years ago

"Two electrons in an atom are separated by 1.4 × 10−10 m, the typical size of an atom. What is the force between them? The Coulo

Rudiy27

Answer:

$F\approx 1.17551\times 10^{-8} N$

Explanation:

In order to find the force between the two electrons, we need to use Coulomb's law. In its scalar form, the law is given by:

$F=k_c \frac{q_1*q_2}{r^2}$

Where:

$k_c=Coulomb\hspace{3}constant\approx 9\times10^{9} \frac{Nm^2}{C^2} \\q_1\hspace{3}and\hspace{3}q_2=Magnitudes\hspace{3}of\hspace{3}the\hspace{3}charges\\r=Distance\hspace{3}between\hspace{3}the\hspace{3}charges$

The electric charge of an electron is a known constant given by:

$q_e \approx -1.6 \times 10^{-19} C$

So:

$q_1=q_2=q_e \approx -1.6 \times 10^{-19} C$

Therefore, replacing the data provided in the Coulomb's law equation:

$F=(9\times 10^{9})\frac{(-1.6\times 10^{-19})*(-1.6\times 10^{-19})}{(1.4\times 10^{-10})^2} =1.175510204\times10^{-8} \approx 1.17551\times10^{-8}N$

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3 years ago

The diagram below shows the path of a planet around a star.

Anit [1.1K]

Answer:

Point C

Explanation:

Centripetal acceleration ac is inversely proportional to radius of orbit so it is greatest at point C.

7 0

3 years ago