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2 years ago

Which of the following statements is not true regarding atmospheric pressure?

Physics

2 answers:

NISA [10]2 years ago

8 0

When atmospheric pressure is higher than the absolute pressure of a gas in a container.

kondaur [170]2 years ago

4 0

Answer:

Atmospheric pressure increases with increasing altitude

Explanation:

Atmospheric pressure decreases with increasing height (altitude).

Ideally, there are no options given here with which the question can be answered, however after searching the question on google, a similar question popped up on two websites with the same set of options. doubnut.com and weegy.com and the options are;

A. Mercury and aneroid barometers are used to measure atmospheric pressure.

B. You calculate absolute pressure by adding atmospheric pressure to gauge pressure.

C. Atmospheric pressure increases with increasing altitude.

D. When atmospheric pressure is higher than the absolute pressure of a gas in a container, a partial vacuum exists in the container

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How microwave tower work?

Airida [17]

Answer:

Microwave towers are telecommunications towers that use microwaves to transmit telephone and television signals to other microwave towers.

Explanation:

This technology replaced existing transmission wires, but it is almost entirely obsolete as of 2015 due to the advent of fiber optics and other modern methods of telecommunication.

4 0

2 years ago

A litre of a gas weigh 2 gram at 300 kelvin temperature and 1 atm pressure,if the pressure is made 75 atm then at which temperat

liberstina [14]

Answer:

45000 K .

Explanation:

Given :

A liter of a gas weigh 2 gram at 300 kelvin temperature and 1 atm pressure

We need to find the temperature in which 1 litre of the same gas weigh 1 gram

in pressure 75 atm.

We know, by ideal gas equation :

$PV=nRT$

Here , n is no of moles , $n=\dfrac{Given \ Weight }{Molecular\ Mass}=\dfrac{w}{M}$

Putting initial and final values and dividing them :

$\dfrac{P_1V_1}{P_2V_2}=\dfrac{\dfrac{w_1}{M}T_1}{\dfrac{w_2}{M}T_2}$

$\dfrac{1\times 1}{75\times 1}=\dfrac{\dfrac{2}{M}\times 300}{\dfrac{1}{M}\times T_2}\\ \\T_2=45000\ K.$

Hence , this is the required solution.

7 0

3 years ago

_____ occurs when a subject opens there eyes and devotes their attention to an object and the eeg rhythm changes to fast, irregu

slega [8]

Answer: B. Alpha block

Explanation:

3 0

2 years ago

How can a cyclist minimize friction as he or she rides?

tino4ka555 [31]

The answer would be B. All the other answers would add friction.

6 0

3 years ago

Read 2 more answers

A 1kg sphere rotates in a circular path of radius 0.2m from rest and it reaches an angular speed of 20rad/sec in 10 second calcu

Len [333]

Answer:

0.4 m/s²

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 1 kg

Radius (r) = 0.2 m

Angular speed (w) = 20 rad/sec

Time (t) = 10 s

Tangential acceleration (aₜ) =?

Next, we shall determine the angular acceleration (a) of the sphere. This can be obtained as follow:

Angular speed (w) = 20 rad/sec

Time (t) = 10 s

Angular acceleration (a) =?

a = w/t

a = 20/10

a = 2 rad/s²

Finally, we shall determine the tangential acceleration (aₜ) of the sphere. This can be obtained as follow:

The tangential acceleration (aₜ) and the angular acceleration (a) are related according to the equation:

Tangential acceleration (aₜ) = Angular acceleration (a) × Radius (r)

aₜ = ar

With the above formula, we can obtain the tangential acceleration (aₜ) as follow:

Radius (r) = 0.2 m

Angular acceleration (a) = 2 rad/s²

Tangential acceleration (aₜ) =?

aₜ = ar

aₜ = 2 × 0.2

aₜ = 0.4 m/s²

Therefore, the tangential acceleration is 0.4 m/s²

6 0

3 years ago