Wind is primarily driven by differences in air pressure. These variations in air pressure are due to temperature differences caused by variations in solar energy received at the surface of the Earth.

7 0

3 years ago

Cierto volumen de gas se encuentra a 60°c de temperatura y 5atm de presión, es calentado hasta 140°c, estado en el cual ocupa un

earnstyle [38]

Answer:

V1 = 2221.33 L

Explanation:

The system is about a ideal gas. Then you can use the equation for ideal gases for a volume V1, temperature T1 and pressure P1:

$P_1V_1=nRT_1$ (1)

And also for the situation in which the variables T, V and P has changed:

$P_2V_2=nRT_2$ (1)

R: constant of ideal gases = 0.082 L.atm/mol.K

For both cases (1) and (2) the number of moles are the same. Next, you solve for n in (1) and (2):

$n=\frac{P_1V_1}{RT_1}\\\\n=\frac{P_2V_2}{RT_2}$

Next, you equal these equations an solve for T2:

$\frac{P_1V_1}{RT_1}=\frac{P_2V_2}{RT_2}\\\\V_1=\frac{P_2V_2T_1}{P_1T_2}$

Finally you replace the values of P2, V2, T1 and T2:

$V_1=\frac{(7atm)(680L)(140\°C)}{(60\°C)(5atm)}=2221.33\ L$

Hence, the initial volume of the gas is 2221.33 L

5 0

3 years ago

The human body station 2

pshichka [43]

Answer:

...?

Explanation:

7 0

2 years ago

In pushing a heavy box across the floor, is the force you need to apply to start the box moving greater than, less than, or the

Veseljchak [2.6K]

Answer:

Explanation:

Force needed to apply start the box is greater than the force needed to keep it moving because static friction is greater than the kinetic friction .

A threshold force is needed to move the box and when box started to move kinetic friction comes into play.

Friction force is directly related to the weight of the box as the friction force is

coefficient of friction time Normal reaction .

And Normal reaction is equal to the weight of box if no force is applied.

$f_r=\mu N$

$N=mg$

3 0

2 years ago