Answer:
1,960 kPa
Step-by-step explanation:
The pressure difference between two places with different height can be calculated by using Bernoulli's principle. The principle can be used to find moving fluid, but since the water inside well is static we can remove the part with velocity. You also need to know the density of water, which is 1000 kg/m3. Assuming gravity unit is 9.8 m/, the calculation will be:
P1+ ρgh1 = P2 + ρgh2
P2 - P1= ρgh2 -ρgh1
P2 - P1= (1000 kg/m3) * (9.8 m/,) * 200m - (1000 kg/m3) * (9.8m/
,) * 0m
P2 - P1= 1,960,000 kg/m = 1,960 kPa
200m deep well has 1,960 kPa higher pressure
x = 7 and x = –7.
Solution:
Given data:
and
To find the solutions when f(x) = 64.
Both are equations of f(x), so equate the given equations, we get
To isolate the constant term subtract 15 from both sides.
49 can be written as 7².
Taking square root on both sides of the equation, we get
x = ±7
The solutions to f(x) = 64 is x = 7 and x = –7.