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3 years ago

The gravitational strength on Earth is greater than the gravitational strength on Mars. Which statement is correct?

Chemistry

2 answers:

yan [13]3 years ago

8 0

Answer:

I think option (b) is right answer

kipiarov [429]3 years ago

3 0

To solve that question, it is important to know the difference between mass and weight.

Mass is the amount of matter of something. The value of mass is ALWAYS equal in anywhere. So, we can say that the mass of a car here, and on Moon is equal.

Weight is the result when we multiply the mass by the gravitational strenght in somewhere. So, the weight is a value that is different in each different place. For example, a car have different weights on Earth and on Moon.

Now, let's analyze each afirmation:

The mass of an object will be greater on Earth than Mars. INCORRECT

We saw that the mass of an object never changes. So, the mass of an object will be equal on Earth and on Mars.

The weight of an object will be greater on Earth than Mars. CORRECT

The weight is different in each different place. We know that to know the weight of an object, we should multiply its mass by the gravitational strength in that place.

Now, let's think: if the gravitational strength on Earth is greater than the gravitational strength on Mars and the mass is equal in both places, the weight of an object will be greater on Earth than Mars. We can use math languange to represent this:

$W_E$ is the weight on Earth.

$W_M$ is the weight on Mars.

$g_{E}$ is the gravitational strength on Earth.

$g_{M}$ is the gratitational strength on Mars.

$m$ is the mass of the object

$W_E = m \times g_E\\W_M = m \times g_M$

If $g_E > g_M$ , so $W_E > W_M$ .

The mass of an object will be greater on Mars than Earth. INCORRECT

Remember: The mass NEVER changes when we just change the places.

THe weight od an object will be greater on Mars than Earth. INCORRECT

We saw before that the object will have the greater weight on the planet with the greater gravitational strength. So, the weight of an object will be greater on Earth, not on Mars.

I hope I've helped. ^^

Enjoy your studies. \o/

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3 years ago

Read 2 more answers

Two identical containers, one red and one yellow, are inflated with different gases at the same volume and pressure. Both contai

Evgen [1.6K]

Answer:

Explanation:

Here we're dealing with the root mean square velocity of gases. We'll provide the formula in order to calculate the root mean square velocity of a gas:

$v_{rms}=\sqrt{\frac{3RT}{M}}$

Here:

$R = 8.314 \frac{J}{K mol}$ is the ideal gas law constant;

$T$ is the absolute temperature in K;

$M$ is the molar mass of a compound in kg/mol.

We know that the gas from the red container is 4 times faster, as it takes 4 times as long for the yellow container to leak out, this means:

$\frac{v_{rms, red}}{v_{rms, yellow}} = 4$

We also know that the temperature of the red container is twice as large:

$\frac{T_{red}}{T_{yellow}} = 2$

Write the ratio of the velocities and substitute the variables:

$\frac{v_{rms, red}}{v_{rms, yellow}}=\frac{\sqrt{\frac{3RT_{red}}{M_{red}}}}{\sqrt{\frac{3RT_{yellow}}{M_{yellow}}}}=4$

Then:

$\frac{\sqrt{\frac{3RT_{red}}{M_{red}}}}{\sqrt{\frac{3RT_{yellow}}{M_{yellow}}}}=\sqrt{\frac{3RT_{red}}{M_{red}}\cdot \frac{M_{yellow}}{3RT_{yellow}}}=\sqrt{\frac{T_{red}}{T_{yellow}}\cdot \frac{M_{yellow}}{M_{red}}}=4$