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3 years ago

Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun?

Physics

2 answers:

const2013 [10]3 years ago

7 0

The answer to your quesiton is,

A) Venus has phases.

-Mabel <3

vova2212 [387]3 years ago

6 0

The answer is A- Venus has phases.

The Copernicus's heliocentric (Sun-centered) theory stated that the Sun is at rest near the center of the Universe, and that the Earth, spinning on its axis once daily, revolves annually around the Sun. He proved this theory by discovering that Venus went through phases just like the moon by recording his observations through the telescope.He also disproved the theory that the sun and other planets revolve around the earth through his recorded observations seen via the telescope.

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Radio waves are readily diffracted around buildings, whereas light waves are negligibly diffracted around buildings. This is bec

Tom [10]

Answer:

Radio waves have longer wavelength

Explanation:

Radio wave is an electromagnetic frequency that has the ability to travel through long distance. They have frequencies shuttling been the range of 10^4 hz and a frequency of 10^12 hz

Light wave is also called visible light. This is because it is visible to the naked eye, despite it being in the electromagnetic spectrum. It's frequency is usually between 4*10^-7 hz and a frequency of 7*10^-7 hz.

As can be seen from both, the radio waves length are quite far stronger than that of the light waves.

6 0

3 years ago

Which words in the sentence are the direct objects?

barxatty [35]

The answer is A and E.
Hope this helps! :D

7 0

3 years ago

ariel has 2.6 grams of zinc . what volume of the material does she have if zinc had density of 7.13 g/cm

vaieri [72.5K]

Answer:

Ap. 4.6

Explanation:

5 0

3 years ago

10. A book has a mass of 400 g. The surface of the book in contact with a table has dimensions 0.10m x 0.20 m. The gravitational

morpeh [17]

The pressure exerted on the table due to the book is 200 N/m².

The given parameters;

mass of the book, m = 400 g = 0.4 kg
dimension of the table, = 0.10m x 0.20 m.
gravitational field strength g = 10 N/kg.

The area of the table is calculated as follows;

A = 0.1 x 0.2 = 0.02 m²

The pressure exerted on the table due to the book is calculated as follows;

$P = \frac{F}{A}$

where;

F is the force of the book due to its weight

$P =\frac{F}{A} = \frac{mg}{A} = \frac{0.4 \times 10}{0.02} = 200 \ N/m^2$

Thus, the pressure exerted on the table due to the book is 200 N/m².

Learn more here:brainly.com/question/21935783

8 0

3 years ago

An inventor develops a stationary cycling device by which an individual, while pedaling, can convert all of the energy expended

Eddi Din [679]

Answer:

Emec = 94050 [J]

Explanation:

In order to solve this problem, we must understand that all thermal energy is converted into mechanical energy.

The thermal energy can be calculated by means of the following expression.

$Q=m*C_{p}*(T_{final}-T_{initial})$

where:

Q = heat [J]

Cp = specific heat of water = 4186 [J/kg*°C]

m = mass = 300 [g] = 0.3 [kg]

T_final = 95 [°C]

T_initial = 20 [°C]

Now we can calculate the heat, replacing the given values:

$Q=0.3*4180*(95-20)\\Q= 94050[J]$

Since all this energy must come from the mechanical energy delivered by the exercise bike, and no energy is lost during the process, the mechanical energy must be equal to the thermal energy.

$Q=E_{mec}\\E_{mec}=94050[J]$

4 0

3 years ago