Pressure and volume changes at a constant temperature can be calculated using

If an otherwise empty pressure cooker is filled with air of room temperature and then placed on a hot stove, what would be the m

ehidna [41]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The force on the lid when the air inside the cooker had been heated to 120°C is = $0.34P_{a}A$

The force on the lid when the air inside the cooker had been heated to 20°C is = $0.25P_{a}A$

The

Explanation:

The main concept used to solve this problem is Pressure-Temperature Law.

Initially, find the pressure inside the pressure cooker by using the Pressure-Temperature Law. Then, find the force exerted by the air inside cooker on the lid of the cooker.

Fundamentals :

The Pressure-Temperature Law states that the pressure of the of a given gas held at constant volume is directly proportional to the Kelvin temperature. The increase in pressure results in an increase in the temperature and vice-versa.

The expression of the Pressure-Temperature Law is as follows:

$\frac{P_{1}}{P_{2}} =\frac{P_{2}}{T_{2}}$

Here, $P_{1}$ and $P_{2}$

are the initial and final pressures and $T_{1}$ and $T_{2}$

are the initial and final temperatures respectively.

The force in terms of pressure can be given by the following expression.

F=(ΔP) A

Here, A is the area on which the pressure is applied and ΔP is the change in pressure

The step- step calculation is shown on the second,third,fourth, fifth image

Note: $P_{a}$ is the pressure of atmosphere

6 0

2 years ago

What is the period of a wave if the wavelength is 100 m and the speed is 200 m/s?

Stells [14]

This is simple question and easy to understand.
so first you use a formula to calculate frequency of the wave.
v _ stands for velocity a.k.a speed
f_ stands for frequency which you have to find.
(pronounced lemda)_ stands for wavelength.
Then you gonna place all your values according to you have in the formula as shown then solve for f.
Finally, you use the time formula
where
T_ is period a.k.a time which equal to the reciprocal of frequency or equal to 1/f.
Simply input your values according to the formula and you your answer as 0.5s

8 0

1 year ago

Read 2 more answers

A quantum system has three energy levels, so three wavelengths appear in its emission spectrum. the shortest observed wavelength

daser333 [38]

The wavelength emitted is indirectly proportional to the difference in the change in the energy level. For the wavelength 278 nm the change in energy level is significantly high. Further change in energy level is indicated by 454nm light but the difference in energy level for this wavelength to be emitted is not greater than the previous one. There is a possibility that these subsystems have now very low energy which should result in wavelengths ranging from 700 to 900 nm. There is another possibility that there is some metastable subsystems in the system which may cause LASER emission.

3 0

1 year ago

In a jump spike, a volleyball player slams the ball from overhead and toward the opposite floor. controlling the angle of the sp

8090 [49]

V ( initial ) = 20 m/s
h = 2.30 m
h = v y * t + g t ² / 2
d = v x * t
1 ) At α = 18°:
v y = 20 * sin 18° = 6.18 m/s
v x = 20 * cos 18° = 19.02 m/ s
2.30 = 6.18 t + 4.9 t²
4.9 t² + 6.18 t - 2.30 = 0
After solving the quadratic equation ( a = 4.9, b = 6.18, c = - 2.3 ):
t 1/2 = (- 6.18 +/- √( 6.18² - 4 * 4.9 * (-2.3)) ) / ( 2 * 4.9 )
t = 0.3 s
d 1 = 19.02 m/s * 0.3 s = 5.706 m
2 ) At α = 8°:
v y = 20* sin 8° = 2.78 m/s
v x = 20* cos 8° = 19.81 m/s
2.3 = 2.78 t + 4.9 t²
4.9 t² + 2.78 t - 2.3 = 0
t = 0.46 s
d 2 = 19.81 * 0.46 = 9.113 m
The distance is:
d 2 - d 1 = 9.113 m - 5.706 m = 3.407 m

GOOD LUCK AND HOPE IT HELPS U

6 0

1 year ago

The block in the diagram below is AT REST. However, the tension in the cable is not the only thing holding the block back. Stati

Vedmedyk [2.9K]

Answer:

The tension in the rope is 229.37 N.

Explanation:

Given:

Mass of the block is, $m=33.2\ kg$