All categories

3 years ago

As someone falls toward the Earth, what happens to their GPE?

Chemistry

1 answer:

Dimas [21]3 years ago

3 0

<h3>Answer:</h3>

B. Decreases

<h3>Explanation:</h3>

The potential energy or stored energy possessed by an object relative to the earth's gravity is known as gravitational potential energy, GPE.
This energy depends on the position of the object from the earth's surface and its weight.
It is given by, GPE = mass × height × gravitational acceleration
Therefore, a heavier object has more gravitational potential compared to a lighter object at the same height.
Additionally, an object at a higher height from the surface of the earth will possess more gravitational potential energy compared to an object near the earth's surface.

In this case;

We would, therefore, conclude that when someone falls towards the earth his/her gravitational potential energy (GPE) decreases due to a decrease in height from the surface of the earth.

You might be interested in

Please Define what an “atom” is

Lostsunrise [7]

Answer:

the smallest particle of a chemical element that can exist.

Explanation:

3 0

3 years ago

64. Which of the followings can dissociate in water?

Arisa [49]

Answer:

<h2>Hi there !</h2>

Explanation:

<h2>Reason :-</h2>

<h2>Salts are strong electrolytes, so they undergo complete dissociation.</h2><h3>Hope it helps u.....</h3><h3>Stay safe, stay healthy and blessed</h3><h3>Have a good day</h3><h3>Thank you ~</h3>

8 0

2 years ago

Read 2 more answers

You mix 200. mL of 0.400M HCl with 200. mL of 0.400M NaOH in a coffee cup calorimeter. The temperature of the solution goes from

GuDViN [60]

Answer : The enthalpy of neutralization is, 56.012 kJ/mole

Explanation :

First we have to calculate the moles of HCl and NaOH.

$\text{Moles of HCl}=\text{Concentration of HCl}\times \text{Volume of solution}=0.400mole/L\times 0.200L=0.08mol$

$\text{Moles of NaOH}=\text{Concentration of NaOH}\times \text{Volume of solution}=0.400mole/L\times 0.200L=0.08mol$

The balanced chemical reaction will be,

$HCl+NaOH\rightarrow NaCl+H_2O$

From the balanced reaction we conclude that,

As, 1 mole of HCl neutralizes by 1 mole of NaOH

So, 0.08 mole of HCl neutralizes by 0.08 mole of NaOH

Thus, the number of neutralized moles = 0.08 mole

Now we have to calculate the mass of water.

As we know that the density of water is 1 g/ml. So, the mass of water will be:

The volume of water = $200mL+200L=400mL$

$\text{Mass of water}=\text{Density of water}\times \text{Volume of water}=1g/ml\times 400mL=400g$

Now we have to calculate the heat absorbed during the reaction.

$q=m\times c\times (T_{final}-T_{initial})$

where,

q = heat absorbed = ?

$c$ = specific heat of water = $4.18J/g^oC$

m = mass of water = 400 g

$T_{final}$ = final temperature of water = $27.78^oC=273+25.10=300.78K$

$T_{initial}$ = initial temperature of metal = $25.10^oC=273+27.78=298.1K$

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

$q=400g\times 4.18J/g^oC\times (300.78-298.1)K$

$q=4480.96J$

Thus, the heat released during the neutralization = -4480.96 J

Now we have to calculate the enthalpy of neutralization.

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

where,

$\Delta H$ = enthalpy of neutralization = ?

q = heat released = -4480.96 J

n = number of moles used in neutralization = 0.08 mole

$\Delta H=\frac{-4480.96J}{0.08mole}=-56012J/mole=-56.012kJ/mol$

The negative sign indicate the heat released during the reaction.

Therefore, the enthalpy of neutralization is, 56.012 kJ/mole

8 0

3 years ago

Please help like please

klemol [59]

Answer:

It is the third one

Explanation:

"Both atoms achieve a more stable configuration."

4 0

2 years ago

Read 2 more answers

When molten rock undergoes crystallization above ground, what type of rock results?

vodka [1.7K]

I am pretty sure that the answer is B. extrusive rock. I hope that this helps you!! Good Luck!!

5 0

3 years ago

Read 2 more answers