63 Answered Questions for the topic Pressure

Pressure Physics Force

11/18/15

What is the average pressure exerted on the ground by both feet? One foot?

If a person who exerts 700 N of force has shoes that cover .04 m^2, what is the average pressure exerted on the ground by both feet? One foot?
Pressure Math Science Physics

07/07/15

Physics: what phase would I be in?

On a phase diagram there is a triple point, where solids liquids and gasses all exist at the same temperature and pressure. If I decrease the temperature but increase the pressure from this triple... more

07/07/15

Physics: ideal gas law, pressure

If a contained ideal gas decreases the volume by a factor of two and then triples the temperature, what happens to the pressure?   a. It goes up by a factor of 2 b. It goes up by a factor of... more

07/06/15

Physics: What is the pressure?

If a tank has 2.50 g of N2 (nitrogen atom has 14 nucleons) and a volume of 1950 cm3 and it is held at 142 0 C, what is the pressure?

06/25/15

At a certain temperature, the Kp for the decomposition of H2S is 0.702.

Initially, only H2S is present at a pressure of 0.148 atm in a closed container. What is the total pressure in the container at equilibrium?   H2S(g) ---> (and the reverse arrow)... more

06/19/15

Physics: Bernoulli’s principle with pressure and velocity (multiple choice)

Driving slowly down a two-lane highway a large transport truck passes me going the same way as I am. As he does physics flashes before my eyes, and I think Bernoulli’s principle with pressure and... more

How to find pressure of an unknown gas?

An unknown gas is placed in a cylinder that has a movable piston. The volume of the cylinder is set at 6.0 L and the resulting pressure is 735 mm Hg. The piston is pushed into the cylinder and the... more
Pressure Science Maths Mass

03/05/15

need help on this question, dont understand it.

A 15 litre cylinder contains 0.35kg of butane gas (C4 H10). Assuming ideal gas behaviour, calculate the pressure of the gas if the cylinder is stored at 50 Fahrenheit.
Pressure Chemistry

12/13/14

PRESSURE HELP!

PRESSURE HELP!The vapor pressure of liquid iodomethane, CH3I, is 100. mm Hg at 266 K. A 0.541 g sample of liquid CH3I is placed in a closed, evacuated 490. mL container at a temperature of 266... more
Pressure Chemistry

12/12/14

Pressure Help!

The vapor pressure of liquid iodomethane, CH3I, is 100. mm Hg at 266 K. A 0.541 g sample of liquid CH3I is placed in a closed, evacuated 490. mL container at a temperature of 266 K.Assuming that... more

06/02/14

At what rate in cubic centimeters per minute is the volume increasing at this instant?

When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV^(1.4)=C where C is a constant. Suppose that at a certain instant the... more
Pressure Physics

02/02/14

why is his feet not cut

. The photo shows physicsteacher Marshall Ellensteinwalking barefooton broken glass bottlesin his class. What physicsconcept is Marshalldemonstrating, and whyis he careful that the brokenpieces are... more

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