You are snowboarding down a mountain face at a

A manometer using oil (density 0.900 g/cm3) as a fluid is connected to an air tank. Suddenly the pressure in the tank increases

Mila [183]

Answer:

Rise in level of fluid is 0.11 m

Rise in level of fluid in case of mercury is 0.728 cm or 7.28 mm

Solution:

As per the question:

Density of oil, $\rho_{o} = 0.900\ g/cm^{3} = 900\ kg/m^{3}$

Change in Pressure in the tank, $\Delta P = 7.28\ mmHg$

Density of the mercury, $\rho_{m} = 13.6\ g/cm^{3} = 13600\ kg/m^{3}$

Now,

To calculate the rise in the level of fluid inside the manometer:

We know that:

1 mmHg = 133.332 Pa

Thus

$\Delta P = 7.28\ times 133.332 = 970.656\ Pa$

Also,

$\Delta P = \rho_{o} gh$

where

g = acceleration due to gravity

h = height of the fluid level

$970.656 = 900\times 9.8\times h$

h = 0.11 m

Now, if mercury is used:

$\Delta P = \rho_{m} gh$

$970.656 = 13600\times 9.8\times h$

h = 0.00728 m = 7.28 mm

3 0

4 years ago

If the earth were not revolving around the sun would the earth fall into the sun? Why?

Cerrena [4.2K]

If it stopped spinning completely, you would get 1/2 year daylight and 1/2 year nightime!! During daytime for 6 months, the surface temperature would depend on your latitude, being far hotter that it is now at the equator than at the poles where the light rays are more slanted and heating efficiency is lower. This long-term temperature gradient would alter the atmospheric wind circulation pattern so that the air would move from the equator to the poles rather than in wind systems parallel to the equator like they are now!

8 0

4 years ago

A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, 12 years have

tigry1 [53]

Answer:

$7.2878\times10^{16} m$

Explanation:

Time elapsed on Earth $d_{t}$ = 12 years

Time elapsed on board the ship $d_{t_o}$ = 9.2 years

now r= $\frac{d_{t} }{d_t_o}$ = 12/9.2= 1.3043

$v= c \sqrt{1-\frac{1}{r^2}}$

$v= 3\times10^8 \sqrt{1-\frac{1}{1.3043^2}}$

v= $1.9258\times10^8$

therefore distance L= $d_{t}\times v$

putting value we get

= $12\times\times1.9258\times10^8$

= $12\times\times365\times24\times3600\times1.9258\times10^8$

= $7.2878\times10^{16} m$

4 0

3 years ago

Which statements best describe energy ? check all that apply

Ainat [17]

The statements that describes energy best as follows: 

The total amount of energy in the universe remains constant.
Energy can be converted from one form to another.
Energy cannot be created or destroyed.

Explanation :

The Universe is a closed system of energy from where the thermodynamics first law is quoted i.e. the energy in the closed system remains constant.

The energy in the closed system can neither be created nor destroyed in the absence of external energy supply. However, it keeps on changing from one state to another. These are the absolute statements about the total energy existing in the Universe.

There are many energy forms existing in the Universe such heat, mass, vibrations etc. that consistently change their form from one to another but the total energy amount is always constant until external energy is applied to the system.

According to the quantum theory, even an electron absorbs or emits energy while jumping from one energy band to the other. There is never a case where energy can create or destroy in a closed system.

6 0

4 years ago

Where did beowulf and his warriors take the skull

dedylja [7]

I'm pretty sure Beowulf took the skull to Herot.

6 0

4 years ago