Physics
The atmospheric pressure at earth surface is P1 and inside mine is P2. They are related as:
- P1 = P2
- P1 > P2
- P1 < P2
- P2 = 0
Related Questions
The normal atmospheric pressure is :
- 76 m of Hg
- 76 cm of Hg
- 76 Pa
- 76 N m-2
The unit torr is related to the barometric height as:
- 1 torr = 1 cm of Hg
- 1 torr = 0.76 cm of Hg
- 1 torr = 1 mm of Hg
- 1 torr = 1 m of Hg
Simple barometer was first designed by :
- Sir Issac Newton
- Pascal
- Torricelli
- Thomas Alva Edison
A barometer is used :
- to measure atmospheric pressure
- for weather forecasting
- as an altimeter to measure heights
- all of the above