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3 years ago

What happens when Earth rotates on its axis and how long does it take

Physics

2 answers:

faust18 [17]3 years ago

8 0

Answer:

You get Day and Night

It takes 24 hour

Luda [366]3 years ago

7 0

Answer:

Explanation:

The Earth's orbit makes a circle around the sun. At the same time the Earth orbits around the sun, it also spins.Since the Earth orbits the sun and rotates on its axis at the same time we experience seasons, day and night, and changing shadows throughout the day.It only takes 23 hours, 56 minutes and 4.0916 seconds for the Earth to turn once on its axis.

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You cool a 130.0 g slug of red-hot iron (temperature 745 ∘C) by dropping it into an insulated cup of negligible mass containing

erik [133]

Answer:

A) 100°C

B) 211 g

Explanation:

Heat released by red hot iron to cool to 100°C = 130 x .45 x 645 [ specific heat of iron is .45 J /g/K]

= 37732.5 J

heat required by water to heat up to 100 °C = 85 x 4.2 x 80 = 28560 J

As this heat is less than the heat supplied by iron so equilibrium temperature will be 100 ° C. Let m g of water is vaporized in the process . Heat required for vaporization = m x 540x4.2 = 2268m J

Heat required to warm the water of 85 g to 100 °C = 85X4.2 X 80 = 28560 J

heat lost = heat gained

37732.5 = 28560 + 2268m

m = 4 g.

So 4 g of water will be vaporized and remaining 81 g of water and 130 g of iron that is total of 211 g will be in the cup . final temp of water will be 100 °C.

3 0

3 years ago

A student bangs a brick at the head of a table. Three students are positioned equal distance from the head with their hands on t

iris [78.8K]

Explanation:

that the people closer too the head of the table will feel more vibrations than the people at the end of the table. since the vibrations will slow down as they travel farther down the table

Hope this helps!!

5 0

3 years ago

Each degree on the Kelvin scale equals how many degrees on the Celius scale

Mamont248 [21]

Answer:

0° C = 273.15 K

0 K = - 273.15° C

Explanation:

Hello there!

The Kelvin temperature scale refers to the absolute temperature scale. The division in the Kelvin scale is equal to a degree on the Celsius scale only it's difference is zero

The Celsius scale of zero (0°C) is the freezing point.

0 K is Absolute Zero.

•°• 0 K = - 273.15° C

0° C = 273.15 K

Furthermore, this is what I would like you to know about this scales;

The Kelvin scale is used for very low or very high temperatures where water is not involved.

Note: 

The boiling point of water is 100°C.

I hope this helps you to understand more on this scales. Have a nice studies.

8 0

2 years ago

a body has weight 20N how much force is required to move it vertically upwards with an acceleration of 2m/s

kramer

<h2>Given :-</h2>

Weight = 20 N

Acceleration = 2 m/s

Force applied=?

<h2>Solution :-</h2>

As we know that,

F is the Force applied
M is the Mass
A is the Acceleration

According to the question, 

F = 20 × 2

F = 40 N

<h3>Hence :-</h3>

Force applied is 40 N

First equation of motion
v = u + at

Second equation of motion
s = ut + ½at²

Third Equation of motion
v² - u² = 2as

$\begin{gathered} \\ \end{gathered}$

3 0

3 years ago

A tungsten wire is 4.5 m long and 0.55 mm in diameter. what is its resistance?

Artemon [7]

First you need to know the formula for resistance, which is:

$R=$ ρ $\frac{L}{A}$ --- (A)

Where,
ρ = Resistivity
L = length
A = Area

ρ = Resistivity of tungsten = 5.28 x $10^{-8}$ Ωm
L = Length = 4.5 m
A = Area = 0.55 * $10^{-3}$ * π

Plug-in the values in equation(A), you would get:

$Resistance = \frac{5.28 *10^{-8} * 4.5}{0.55 * 10^{-3} * \pi }$

$Resistance = 1.375 * 10^{-4}$ Ω

3 0

3 years ago