Answer:
The maximum height a person's brain could be above his heart is: 1.28 meter.
Explanation:
We need to know what is the normal blood pressure ours hearts so there is a rate: 120/80 (mmHg) and the average will be: 100 (mmHg) and using the Pascal law that relate pressure, density, gravity and height like:
, where P is pressure, p is density, g is the gravity acceleration and h is the height. Now we can find the height and delta of pressure will be: P2-P1 = 100 (mmHg), knowing that 1(mmHg) is equal to 133 Pa, we can do the convertion to 13332.2 (Pa), now because the units of Pascal are Newton/(meter^2). Then we solve the formula to get the height: 
so we get:
Mercury Is more suitable than water cause it is denser than water.
Relation between density and pressure
Pressure = force/area
Replace force by mass * acceleration
Pressure = mass * acceleration/ area
We can replace mass by density * volume since density = mass/ volume
Pressure = density * volume * acceleration/ area
Volume is length^3 whereas area is length ^2. So volume / area = length
Pressure = density * length * acceleration
Gravity is form of acceleration so
Pressure = density * length * gravity
Length can be height or depth
Finally pressure = density * height * gravity
P = ρ g h => pressure of liquid
Twice the amplitude of each wave
Answer:
I believe the answer to be B.
Explanation:
Without food, the whales would die.
Answer:
Ep = 117600 J
Explanation:
Data:
- Mass (m) = 600 kg
- Height (h) = 20 m
- Gravity (g) = 9.8 m/s²
- Potential Energy (Ep) = ?
Use formula:
Replace:
- Ep = 600 kg * 9.8 m/s² * 20 m
Multiply operations, and units:
What is the potential energy?
The potential energy is <u>117600 Joules.</u>
