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February 14, 2016

Search: air pressure

Number of results: 16,573

science
At a pressure of 2.00 atm, a sample of air consists of 0.20 moles of nitrogen, 0.65 moles of oxygen and 0.15 moles of argon. What is the partial pressure of the oxygen?
October 30, 2012 by Mickeykalle

physics
Winds in a certain city can attain sustained speeds of 45 m/s when the jet stream descends during spring. Approximately what force does a roof with an area of 200 m^2 experience due to the Bernoulli effect, assuming air flow is completely laminar? Density of air is 1.14 kg/m^3...
November 9, 2010 by Anonymous

Science
Find the density and specific gravity of the following (a) SO2 at 700F and 1 atm (b) Mixture of 10 mole% CH4 and 90 mole% argon at 5400C and 28.9 inch Hg (c) Air containing 0.045 lbm H2O per pound mass of dry air at 2000F and 29.7 in Hg absolute pressure
March 26, 2015 by Man Singh Chouhan

physics
Consider the low-speed flight of the Space Shuttle as it is nearing a landing. If the air pressure and temperature of the shuttle are 1.2 atm and 300 K, respectively, what is the air density? Note: 1 atm = 101325 N/m^2. Hint: Use ideal gas law!
March 4, 2012 by oris

AVSC
Consider the low-speed flight of the Space Shuttle as it is nearing a landing. If the air pressure and temperature of the shuttle are 1.2 atm and 300 K, respectively, what is the air density? Note: 1 atm = 101325 N/m^2. Hint: Use ideal gas law!
March 5, 2012 by Terri

Physics
A man of mass 70 kg is in free fall in the air. He reaches a terminal speed of about v_term = 54 m/s. (Note that v_term >> v_crit and we are in the pressure dominated regime where F_fric is directly propotional to v^2 ; we have g = 9.8 m/s ) What is the force (in N) due ...
October 16, 2013 by saru

science
An air condition lowers the temperature of the surrounding air.Water condensed from air is mostly likely to run out of the bottom water hose of an automobile air conditioner when the air entering the air conditioner is
February 25, 2011 by leajia

Chemistry II
1. Under water where the temperature is 17oC and the pressure is 394 kPa, a diver inhales 2.1 L of air from his SCUBA tank. a) How many moles of gas are in his lungs? b) If the diver swims to the surface without exhaling where the temperature is 32oC and the pressure changes ...
September 14, 2009 by pasely

algebra 1
this promblem will prepare you for the real world connection. the air around u puts pressure on ur body equal 14.7 pounds per square inch (psi). when you are underwater, the water exerts additional pressure on ur body. for each foot u r below the surface of the water, the ...
August 26, 2010 by alanaR.

chemistry
an air bubble is released at the bottom of a lake where the temperature is 4 celsius and the pressure is 3.40 atm. if the bubble was 10.0 ml to start, what well its volume be at the surface, where the water temperature is 12 celsius and the pressure is 103 kpa?
April 12, 2010 by cc

last one! science!
A typical high school lab activity involves building a model rocket with a small canister, antacid, and water. The water and antacid are combined in the canister, which is then tightly closed and turned upside down. The reaction of these materials in the canister causes gas to...
October 28, 2009 by please help(:

Chemistry 20
a balloon can hold 800ml of air before breaking. A balloon at 4 deg C contain 750ml of air is brought into a house at 25 deg C. Assuming a constant pressure inside and outside the ballon, will the balloon break?
June 18, 2011 by Cheryl

chemistry
A chamber has a volume of 17 m3 and operates at a pressure of 4.66 atm. What volume in cubic meters would the air in the chamber occupy if the pressure were changed to 1.64 atm at constant temperature?
October 31, 2014 by Shatoya

physics
A closed auditorium of volume 27100 m^3 is filled with 2210 people at the beginning of a show, and the air in the space is at a temperature of 292 K and a pressure of 1.01310^5 Pa. If there were no ventilation, by how much would the temperature (in K) of the air rise during ...
January 1, 2012 by maria

physics
A closed auditorium of volume 27100 m^3 is filled with 2210 people at the beginning of a show, and the air in the space is at a temperature of 292 K and a pressure of 1.01310^5 Pa. If there were no ventilation, by how much would the temperature (in K) of the air rise during ...
January 7, 2012 by linda

physics
Your town is installing a fountain in the main square. If the water is to rise 20 m above the fountain, how much pressure must the water have as it moves slowly toward the nozzle that sprays it up into the air? Assume atmospheric pressure equal to 100,000 Pa.
October 13, 2013 by Em

physics
An Olympic pool has dimensions 50.0 m 25.0 m 2.68 m (length width depth). The density of the pool water is 1007 kgm-3. Atmospheric pressure (1.00 atm) is acting on the surface of the water. If a child dives down to the bottom of the pool what pressure is exerted on the...
January 8, 2015 by sam

physics
A scuba diver searches for treasure at a depth of 20.0m below the surface of the sea. at what pressure must the scuba device deliver air to the diver? (density of sea water= 1030kg/m^3;atmospheric pressure= 1.013x10^5 pa)
May 6, 2012 by Sarah

Chem
A bicycle tire is filled with air to a pressure of 100 psi at a temperature of 19C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58C. The volume increases by 4%. What is the new pressure of the tire? Convert the temps to Kelvins, then use ...
September 30, 2006 by Mew

Chemistry
Calculate the mass of air in an air-filled tire and the mass of helium in a helium-filled tire. What is the mass difference between the two? Assume that the volume of the tire is 857 , that it is filled with a total pressure of 125 psi, and that the temperature is 26 . Also, ...
November 16, 2010 by Amanda

physics
Air is being forced in a cylinder with an initial volume of 0.025 m^3 under a constant pressure of 3.0*10^5 Pa. The volume of the air in the cylinder is increased to 0.035 m^3. a. The cylinder is thermally insulated, making the process adiabatic. What is the change in the ...
March 17, 2007 by anonymous

physics
A closed auditorium of volume 27100 m^3 is filled with 2210 people at the beginning of a show, and the air in the space is at a temperature of 292 K and a pressure of 1.013105 Pa. If there were no ventilation, by how much would the temperature (in K) of the air rise during ...
January 3, 2012 by maria

physics
A closed auditorium of volume 27100 m^3 is filled with 2210 people at the beginning of a show, and the air in the space is at a temperature of 292 K and a pressure of 1.013105 Pa. If there were no ventilation, by how much would the temperature (in K) of the air rise during ...
January 4, 2012 by maria

Physics Urgent please help
A man of mass 70 kg is in free fall in the air. He reaches a terminal speed of about v_term = 54 m/s. (Note that v_term >> v_crit and we are in the pressure dominated regime where F_fric is directly propotional to v^2 ; we have g = 9.8 m/s ) What is the force (in N) due ...
October 17, 2013 by saru

Physics
Your town is installing a fountain in the main square. If the water is to rise 14 m (45.9 feet) above the fountain, how much pressure must the water have as it moves slowly toward the nozzle that sprays it up into the air? Assume atmospheric pressure equal to 100,000 Pa.
April 29, 2013 by Jay

physics
Your town is installing a fountain in the main square. If the water is to rise 16 m (52.5 feet) above the fountain, how much pressure must the water have as it moves slowly toward the nozzle that sprays it up into the air? Assume atmospheric pressure equal to 100,000 Pa.
April 10, 2014 by Shanna

physics
Your town is installing a fountain in the main square. If the water is to rise 26 m (85.3 feet) above the fountain, how much pressure must the water have as it moves slowly toward the nozzle that sprays it up into the air? Assume atmospheric pressure equal to 100,000 Pa.
April 16, 2014 by hai

Science
The weather forecast is for warmer air and lower air pressure. What other change would you expect? a. Higher humidity b. strong winds c. Lower humidity d. Violent winds. I think the answer is f, but I am not sure.
March 10, 2011 by March

chemistry
It decreases? If the air pressure increased, wouldn't that make the diver go down? What happens when you press on the pressure cap? Oh, yeah. So, at night the atmospheric pressure increases and therefore the diver sinks? Can someone help me with this question about a Cartesian...
May 24, 2007 by Lillian

Chemistry
What volume of air at 1.0 atm and 25 degree Celsius must be taken to an engine to burn 1 gallon of gasoline? Assuming that: 2 C8H18 + 25 O2 --> 16 CO2 + 18 H2O provides reasonable model of the actual combustion process. ( The partial pressure of oxygen in air is 0.21 atm ...
January 20, 2016 by Emma

Chemistry
What volume of air at 1.0 atm and 25 degree Celsius must be taken to an engine to burn 1 gallon of gasoline? Assuming that: 2 C8H18 + 25 O2 --> 16 CO2 + 18 H2O provides reasonable model of the actual combustion process. ( The partial pressure of oxygen in air is 0.21 atm ...
January 20, 2016 by Emma

Chemistry
What volume of air at 1.0 atm and 25 degree Celsius must be taken to an engine to burn 1 gallon of gasoline? Assuming that: 2 C8H18 + 25 O2 --> 16 CO2 + 18 H2O provides reasonable model of the actual combustion process. ( The partial pressure of oxygen in air is 0.21 atm ...
January 22, 2016 by Monica

chemistry
a 2.50mL sample of dry air in a cylinder exerts a pressure of3.00atm at room temperature. without changing the temperature, a piston is moved until the pressure in the cylinder is reduced to 1.00atm. what is the final volume of the gas?
March 11, 2013 by jm

chemistry
a 2.50mL sample of dry air in a cylinder exerts a pressure of3.00atm at room temperature. without changing the temperature, a piston is moved until the pressure in the cylinder is reduced to 1.00atm. what is the final volume of the gas?
March 11, 2013 by jm

Chemistry,
I reall need help, i know what formulas to use i just dont know how to do it. Can some one please work with me to get to the correct answer? 1.The air in a dry, sealed 2L soda bottle has a pressure of 0.998 atm at sea level at a temperature of 34C. what will be it's pressure, ...
April 6, 2010 by Courtney

Physics. Need urgent help.
A scuba diver searches for treasure at a depth of 20.0m below the surface of the sea. at what pressure must the scuba device deliver air to the diver? (density of sea water= 1030kg/m^3;atmospheric pressure= 1.013x10^5 pa) another one A king's crown is said to be solid gold but...
May 6, 2012 by Dan

Fluid Mechanics
Air at 70 F flows in a .8 inch diameter horizontal pipe. The density of the air is constant at .077 lbm/ft3. Assuming fully-developed flow determine the maximum pressure drop over a 30 ft section of pipe if the flow is laminar. Ans. = .00288psi
October 29, 2015 by Bryan

physics
(a)If the wind blows at 30m/s over the roof of your house, what is the pressure difference at the roof between the inside and outside air (b) What net force does this pressure difference produce on a roof having an area of 175m^2? I have no clue how to start. I need help with ...
December 16, 2007 by Anonymous

Chemistry 20
a balloon can hold 800ml of air before breaking. A balloon at 4 deg C contain 750ml of air is brought into a house at 25 deg C. Assuming a constant pressure inside and outside the ballon, will the balloon break? What formula would be used here?
June 18, 2011 by Cheryl

Physics
In an empty rubber raft the pressure is approximately constant. You push on a large air pump that pushes 1.0 L(1.0 10^−3m3) of air into the raft. You exert a 17N force while pushing the pump handle 3.010^−2m . Determine the work done on the gas. If all of the ...
April 25, 2015 by Anonymous

Gen Chem 2
The air within a piston equipped with a cylinder absorbs 555 J of heat and expands from an initial volume of 0.12 L to a final volume of 0.87 L against an external pressure of 1.0 atm. What is the change in internal energy of the air within the piston in Joules?
March 5, 2008 by Jessica

chemistry
The air within a piston equipped with a cylinder absorbs 570J of heat and expands from an initial volume of 0.12L to a final volume of 0.88L against an external pressure of 1.0 atm. What is the change in internal energy of the air within the piston?
December 19, 2012 by savannah

chemistry
The air within a piston equipped with a cylinder absorbs 570J of heat and expands from an initial volume of 0.12L to a final volume of 0.88L against an external pressure of 1.0 atm. What is the change in internal energy of the air within the piston?
December 19, 2012 by savannah

8th grade
how to make a double line graph to show air/water temperatures.mon.air-92 water-68tues.air-94 water-69 wed.air-88 water=70,thurs. air=85 water=72 and friday air=96,water=72
June 9, 2010 by will

Physics
Praire dogs live in underground burrows with at least two entrances. They ventilate their burrows by building a mound around one entrance, which is open to a stream of air. A second entrance at ground level is open to almost stagnant air. Use Bernoulli's principle to explain ...
May 11, 2007 by Anonymous

chem
A 31.2 cm3 bubble of air at 1.4 atm pressure is subjected to a new pressure of 3.9 atm. What will be the new volume (cm3)? Assume constant temperature. THe answer I got was 11.2 cm3 is this correct
October 16, 2010 by amber

Chemistry
Typically, when a person coughs, he or she first inhales about 2.50 L of air at 1.00atm and 25 degreesC. The epiglottis and the vocal cords then shut, trapping the air in the lungs, where it is warmed to 37 degrees C and compressed to a volume of about 1.70L by the action of ...
October 10, 2010 by Ellen

engineering
using air pressure, a ball of 0.5kg is forced to move through the tube lying in the horizontal plane and having the shape of a logarithmic spiral. If the tangential force exerted on the ball due to the air is 6N, determine the rate of increase in the ball's speed at the ...
November 15, 2008 by sarah

Physics
A storm approaches and the air pressure outside your apartment suddenly drops to 0.960 ✕ 105Pa from 1.013 ✕ 105Pa. Before the pressure inside your apartment has had time to change, what is the magnitude of the net force exerted on a window that measures 2.0 m x 2...
December 9, 2015 by Jarrell

Chemistry
The adult blue whale has a lung capacity of 5.0*10^3L. Calculate the mass of air (assume an average molar mass 28.98 g/mol ) contained in an adult blue whales lungs at 0.3 degrees Celcius and 1.10 atm., assuming the air behaves ideally. Calculate the number of molecules in a ...
December 6, 2011 by Steffani

Physics
At the surface of a freshwater lake the air pressure is 1.0 atm. At what depth under water in the lake is the water pressure 3.8 atm?
April 20, 2010 by Max

thermodynamics
A scuba tank contains 1.5 kg. of air. The air in the tank is initially at 15 degree celcius. The tank is left near an engine exhaust line, and the tank's pressure doubles. Determine the final temperature, change of internal energy, change of enthalpy, and heat.
November 29, 2011 by hermie

chemistry 106
Dry air near sea level has the following composition by volume: N2, 78.08 percent; O2, 20.94 percent; Ar, 0.93 percent; CO2, 0.05 percent. The atmospheric pressure is 1.00 atm. (Hint: Since volume is proportional to the number of moles present, mole fractions of gases can be ...
March 1, 2010 by Tanisha

science
1. What will happen to the pressure in your tires if the temperature drops 40 degrees over the night? a) Pressure will increase b) Pressure will decrease c) Pressure will not change d) Cannot determine
February 15, 2008 by josh

Physics
A concert hall of volume 2000 m3 contains air at a temperature of 25 ◦C and relative humidity 80 %. Given that the density of water vapour in saturated air at 25 ◦C is 22.8 g/m3 and that the temperature and pressure of the concert hall remain constant what mass of...
August 19, 2015 by Anonymous

chemistry
Calculate the mass of oxygen (in mg) dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air to be 0.21 and the Henry's law constant for oxygen in water at this temperature to be 1.3 x 10-3 M/atm.
May 26, 2014 by charles

Chemistry
A can of soda has the total volume of 350ml. This can is open and only contains atmospheric air, and is placed within a furnace 100 C. After the can achieve this reduced temperature at 25 C. With decreasing temperature, there is a reduction of the internal pressure that ...
January 22, 2016 by Kelly

atmospheric pressure
How many moles of gas must be forced into a 3.9 ball to give it a gauge pressure of 9.8 at 25? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.5 so that the total pressure in the ball is 24.3 . Express your answer using two ...
November 19, 2012 by Anonymous

chem help
a scuba diver breathing normal air descends 100m of depth, where the total pressure is 11 atm. What is the partial pressure of oxygen that the diver experiences at this depth? Can someone help out on this question? Make a ratio: 11atm/1atm= P/partial pressureO2 at surface ...
March 19, 2007 by david

Chemistry
Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.6 L of water upon warming from 25 C to 50 C. Assume that the water is initially saturated with nitrogen and oxygen gas at 25 C and a total ...
September 17, 2009 by RE

Science
A circular hatch in the hull of a submarine has a radius of 40.0 cm. The submarine is 850.0 m under water. If atmospheric pressure above the ocean is 1.01 x 105 Pa and the air pressure inside the submarine is 1.31x 105 Pa, what net force is exerted on the hatch? (ρsw = ...
December 19, 2011 by Zoe

Physics
Hot air balloons float in the air because of the difference in density between cold and hot air. In this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. To do this, use the following variables and make these ...
July 13, 2011 by Jenny

calculus 1
Suppose that a persons blood pressure at time t in seconds is given by p(t) = 100 + 18 sin (7t). (a) During each heartbeat, what is the systolic pressure (maximum blood pressure) and the diastolic pressure (minimum blood pressure)? (b) According to this model, how many ...
October 7, 2014 by Anonymous

Physics
Hey I'm lost on this physics problem can anyone tell me which equations i'm suppose to use in these questions a) A skier inhales a breath of air at Temp-air = 3.9 XC and exhales it as Volume-air = 1.92 liters of air at Temp-body = 37 XC and atmospheric pressure of P = 95.9 ...
March 27, 2010 by Andrew

Chemistry
A 0.75 L bottle is cleaned, dried, and closed in a room where the air is 20C and 42% relative humidity (that is, the water vapor in the air is 0.42 of the equilibrium vapor pressure at 20C). The bottle is brought outside and stored at 0.0C. (See Table 5.2) (a) What mass of ...
January 26, 2011 by Ashley

Physical Science
During a storm, the wind exerts a 150-N force on a window that measures 1.00 m by 0.50 m. The outside air pressure is 101 kPa. What pressure, in pascals, does the wind exert on the window? a. 75 Pa b. 150 Pa c. 1.5 x 10^3 Pa d. 3.0 x 10^2 Pa e. 3.0 x 10^5 kPa
March 20, 2012 by Ariel

Physics
(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 23.2 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa. Pa (b) What force is exerted by the water on the window of an underwater vehicle at ...
October 27, 2011 by Allie

Chemistry
As a hot air balloon rises to increasingly higher altitudes describe what happens to the volume of the balloon if at constant pressure? If pressure is constant, and temperature decreases.. PV=nrT Volume is directly proportional to temperature..
January 11, 2007 by Lisa

chemistry
A bicycle tire fitted was fitted with the air pressure of 75 psi at temperature 19 degree C riding the bike on a asphalt on a hot day increases temperature of the tire to 58 degree C. The volume increase by 4% . What is the new pressure
October 26, 2014 by mathew

Physics
A bicycle tire whose volume is 4.1 x 10-4 m3 has a temperature of 296 K and an absolute pressure of 4.69 x 105 Pa. A cyclist brings the pressure up to 6.75 x 105 Pa without changing the temperature or volume. How many moles of air must be pumped into the tire?
December 1, 2006 by maysam

chemistry
in which location, would the boiling piont of water will be highest ? A) new mexico where pressure is 710torr B) new york city where pressure is 760torr C) mount everest where pressure is 244torr D) a pressure cooker where pressure is 760torr
August 5, 2011 by marjani

Chemistry - PLEASE HELP!!!
A 5.0 g n2o (laughing gas) that is inside a 12 mL cylinder used used to fill up a 800 mL whipped cream container. Beforehand, the container had air in it at 760 torr atmosphere pressure at 25 degrees celsius. Then, we will add the n2o/air mix to balloon until the pressure in ...
January 15, 2015 by Elena

science
Why does air flow from high to low pressure?
January 19, 2009 by Gina

science
air pressure changes whats the effect of that
January 25, 2010 by jason

science
how does air pressure affects the outer space
March 6, 2010 by Pamela

science
The pressure created by the weight of air is greatest_______.
August 25, 2010 by sean

integrated science
explain pressure relations for air
June 8, 2011 by brit

science
What altitude would you be at if the air pressure is 0.05 kpa.
January 7, 2014 by Wendi

Science
Does air pressure affect species survival?
February 5, 2015 by Student

Chemistry
PLEASE HELP!! On a clear day at sea level, with a temperature of 25 C, the partial pressure of N2 in air is 79 kPa and the concentration of nitrogen in water is 5.3 x 10-4 M. When the partial pressure of N2 is ________ kPa, the concentration in water is 1.1 x 10-4 M.
May 25, 2012 by Henry

chemistry
a balloon has a volume of 456 mL at a pressure of 1.0 atm. it is taken under water in a submarine to depth. where the air pressure in the submarine is 3.3 atm. what is the volume of the balloon? assume constant temperature?
May 15, 2013 by john

chemistry
A 45.3 cm3 bubble of air at 1 atm pressure is subjected to a new pressure of 4.7 atm. What will be the new volume (cm3)?
October 17, 2011 by james

Physics
The atmosphere of Mars exerts a pressure of only 600 Pa on the surface and has a density of only 0.02 kg/m3. (a) What is the thickness of the Martian atmosphere, assuming the boundary between atmosphere and outer space to be the point where atmospheric pressure drops to 0.01% ...
November 7, 2011 by mymi

Physics
A circular hatch in the hull of a submarine has a radius of 40.0 cm. The submarine is 850.0 m under water. If atmospheric pressure above the ocean is 1.01 x 105 Pa and the air pressure inside the submarine is 1.31x 105 Pa, what net force is exerted on the hatch? (ρsw = ...
December 19, 2011 by Sally

Intro to Physics
(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 25.6 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa. (b) What force is exerted by the water on the window of an underwater vehicle at ...
November 7, 2012 by Amy

college chemistry
A diving bell is a container open at the bottom. As the bell descends, the water level inside changes so that the pressure inside equals the pressure outside. Initially, the volume of air is 8.58 m3 at 1.020 atm and 20C. What is the volume at 1.584 atm and 20C?
December 10, 2011 by Betty

physics
An eardrum can burst when the pressure exceeds one atmosphere and the pressure inside the ear fails to equalize. Determine the depth in seawater when this pressure would be reached. (pressure of ocean = 1.03*10^3 kg/m^3)
February 23, 2010 by Alex

Chemistry
A 0.75 L bottle is cleaned, dried, and closed in a room where the air is 22C and 47% relative humidity (that is, the water vapor in the air is 0.47 of the equilibrium vapor pressure at 22C). The bottle is brought outside and stored at 0.0C. My question is what does the ...
December 11, 2012 by xavier

physics
A volume Vi = 23.1 L of air at temperature T = 21 XC is compressed at constant temperature to a volume Vf = 7.7 L. The relative humidity of the air before compression is R = 56.4 %. Saturated water vapour in air at this temperature has a vapour pressure vp = 2.5 kPa and a ...
March 29, 2011 by Sarah

Chemistry
Methyl salicylate, C8H8O3, the odorous constituent of oil of wintergreen, has a vapour pressure of 1.00 torr at 54.3oC and 10.0 torr at 95.3oC. a) What is its vapour pressure at 25oC? b) What is the minimum number of liters of air that must pass over a sample of the compound ...
December 8, 2012 by xavier

physics
What is the wind speed in m/s required to keep a great white shark suspended in midair during a summer day on the California beach? Details and assumptions Model the shark as a horizontal cylinder 6 m long and 1 m in diameter. The air is at a pressure of 1 atm and a ...
July 23, 2013 by nathaniel

physics
What is the wind speed in m/s required to keep a great white shark suspended in midair during a summer day on the California beach? Details and assumptions Model the shark as a horizontal cylinder 6 m long and 1 m in diameter. The air is at a pressure of 1 atm and a ...
July 24, 2013 by andy

PHYSICS
A submarine is trapped at the bottom of the ocean with its hatch at a depth of 20 m below the surface. The hatch is circular and 0.40 m. Calculate the force that would have to be exerted against it to open it. The air inside the submarine has a pressure of 1 Atm. -I used P=f/a...
March 13, 2015 by Javeria

PHYSICS - HELP
A wind with speed 45 m/s blows across a roof 20 m long and 12 m wide. The pressure inside the room is 1 atm. What is the net force on this roof due to the pressure difference inside and outside the roof? (The density of air is equal to 1.3 kg/m3.) Question 1 options: A) 2.4 ...
August 10, 2011 by Deana

science
please help how dows the movement of air molecules cause pressure?
October 21, 2008 by Susan

science
how do you keep your body from being crushed by air pressure?
January 6, 2009 by kayla

chemestry
what does air pressure do to the freezing, melting ad boiling point
September 17, 2009 by Chad

science
How does your body keep from being crushed from air pressure?
May 3, 2011 by Alyssa

Science of the Atmosphere
What is the temperature of air, given P= 90 kPA and the pressure is 1.0 kg(m^-3)? Thanks!
September 6, 2014 by Rebekah

Science of the Atmosphere
What is the temperature of air, given P= 90 kPA and the pressure is 1.0 kg(m^-3)? Thanks!
September 7, 2014 by Rebekah

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