2 years ago

Why does the world rotate and never makes us feel it move?

2 answers:

6 0

The earth moves too slow for us to feel it. If the earth moved fast time would move faster, meaning we would move faster. We have adapted to our current living situation over millions of years. We have been used to it our entire lives.

jekas [21]2 years ago

3 0

-- The Earth is rotating HALF as fast as the hour hand on a clock ... one full rotation in 24 hours. Too slow to feel.

-- The Earth takes about 4 minutes to rotate ONE DEGREE (out of 360). Too slow to feel.

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What mass of ice (in g) can be melted if 27.2 kJ of thermal energy are added at the freezing point? Use molar mass = 18.02 g/mol

san4es73 [151]

Answer : The mass of ice melted can be, 3.98 grams.

Explanation :

First we have to calculate the moles of ice.

$Q=\frac{\Delta H}{n}$

where,

Q = energy absorbed = 27.2 kJ

$\Delta H$ = enthalpy of fusion of ice = 6.01 kJ/mol

n = moles = ?

Now put all the given values in the above expression, we get:

$27.2kJ=\frac{6.01kJ/mol}{n}$

$n=0.221mol$

Now we have to calculate the mass of ice.

$\text{Mass of ice}=\text{Moles of ice}\times \text{Molar mass of ice}$

Molar mass of ice = 18.02 g/mol

$\text{Mass of ice}=0.221mol\times 18.02g/mol=3.98g$

Thus, the mass of ice melted can be, 3.98 grams.

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Andreas93 [3]

M = W/g
mass (m)
weight (W) and strength of gravity (g)
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2 years ago

Does a car that is slowing down always have a negative acceleration explain

Zina [86]

No, because sometimes you have to stop at stop signs and stop lights.

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The action force is the balloon pushing the air out. What is the magnitude of the reaction force of the air pushing on the ballo

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What is the voltage in a circuit that has a current of 10.0 amps and a resistance of 28.5 ohms?

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Voltage = Current (I) × Resistance (R)
V = 10 × 28.5 = 285v

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