1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gnom [1K]
2 years ago
5

Jorge wishes to observe the progress of his vacuum pump in evacuating a tall bell jar for the purpose of demonstrating that soun

d waves do not travel in a vacuum. So, Jorge places a mercury barometer inside the bell jar and follows the height of the mercury column as the pump chugs away. When he observes a height of 8.69 mm, what fraction of atmospheric pressure, expressed as a percentage, has Jorge achieved in his bell jar? The density of mercury is 1.36 × 10 4 kg/m 3 and the standard atmospheric pressure is 1.01 × 10 5 Pa. The acceleration g due to gravity is 9.81 m/s 2 . g
Physics
1 answer:
natka813 [3]2 years ago
8 0

Answer:

1.147 %

Explanation:

\rho = Density of mercury = 1.36\times 10^4\ kg/m^3

g = Acceleration due to gravity = 9.81 m/s²

h = Height of mercury = 8.69 m

Standard atmospheric pressure = 1.01\times 10^5\ Pa

6.55 mmHg converting to Pa

\rho gh\\ =1.36\times 10^4\times 9.81\times 8.69\times 10^{-3}\\ =1159.38504\ Pa

Dividing air pressure by the above value

\frac{1159.38504}{1.01\times 10^5}\times 100=1.147\ \%

The fraction of atmospheric pressure is 1.147 %

You might be interested in
When making a DNA Fingerprint, the job of the restriction enzyme is to..
pogonyaev

Answer:

A isolate the DNA From a sample of cells

4 0
2 years ago
Consider the mass and velocity values of Objects A and B below.
777dan777 [17]

Answer:

the same

Explanation:

8 0
2 years ago
A car decelerates uniformly from 54 m/s to 38 m/s in 8.0 seconds. How far does it travel dunng this time?
galina1969 [7]

Answer:

368m

Explanation:

dx=vt

54+38/2=46

46*8=368m

7 0
3 years ago
1. What are the three ways an object can accelerate?
solong [7]

Answer:

increase speed, decrease speed, and change direction

Explanation:

4 0
2 years ago
The luminous flux of a torch of intensity 50 cd is?
RSB [31]

Answer:

i dont know i am right but here Luminous intensity is defined as dI=dΨλ / dΩ, where dΨλ is the luminous flux (light energy flux in watts per m2) emitted within a solid angle dΩ. The light energy flux may be expressed in terms of the incident x-ray energy flux and the x-ray absorption and conversion properties of the scintillator(7,8,9).

Explanation:

5 0
3 years ago
Other questions:
  • A black, totally absorbing piece of cardboard of area A = 1.7 cm2 intercepts light with an intensity of 8.1 W/m2 from a camera s
    11·2 answers
  • Which statement best describes an isolated system?
    5·2 answers
  • If the magnetic field of an electromagnetic wave is in the +x-direction and the electric field of the wave is in the +y directio
    9·1 answer
  • It is known that birds can detect the earth's magnetic field, but the mechanism of how they do this is not known. It has been su
    10·1 answer
  • A cyclist rode at an average speed of 15mph for 30 miles how long was the ride
    15·1 answer
  • Do i become a professional astrophysicist after getting PhD in Astrophysics ? Or will i be a postdoc research student i mean wil
    14·1 answer
  • On Monday when you ask your friend if you should dump The person your day and she said yes now on Wednesday she says no since yo
    6·1 answer
  • Coin-shaped compartment that contains light-absorbing molecules
    6·1 answer
  • Parallel rays of monochromatic light with wavelength 582 nm illuminate two identical slits and produce an interference pattern o
    8·1 answer
  • How to test the pH level of a soap?​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!