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 pressure increases by 0.445 psi.
a) what does 14.7 represent in the 14.7 + 0.445d? my answer pounds..( is it correct?)
b) what does d presents in the expression?
c) what is the total pressire exerted on a person's body when d=8 ft?
pls help me with this one
14.7 psi is the base value of pressure out of water.
psi = pounds per square inch
d = depth in feet
14.7 + .445 * 8 = ?
The answer shoud be a 121.02 psi
a) In the expression 14.7 + 0.445d, the number 14.7 represents the pressure exerted by the air around you. Specifically, it represents the atmospheric pressure at sea level, which is commonly referred to as 1 atmosphere or 1 atm. This pressure is equivalent to 14.7 pounds per square inch (psi). So yes, your answer of "pounds" is correct.
b) In the same expression, d represents the depth, specifically the depth below the surface of the water. It is measured in feet. So in the context of this problem, d represents the distance below the water's surface at which you are submerged.
c) To find the total pressure exerted on a person's body when d = 8 ft, you can substitute 8 for d in the given expression: 14.7 + 0.445(8).
Calculating this, we have:
14.7 + 0.445(8) = 14.7 + 3.56 = 18.26 psi
So, when a person is 8 feet below the surface of the water, the total pressure exerted on their body is approximately 18.26 pounds per square inch.