Answer:
the pressure at the bottom of the tank is 12 kPa
Explanation:
The computation of the pressure at the bottom of the tank is as follows:
as we know that
Pressure = hdg
where
H = Height
d = density
Now the pressure is
= 1.5m × 800 × 10
= 12,000 Pa
= 12 kPa
Hence, the pressure at the bottom of the tank is 12 kPa
<span>C) Most earthquakes and volcanoes occur along distinct lines around the world.
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Answer:
15.29m/s
Explanation:
Using the law of conservation of momentum
m1u1+m2u2 = (m1+m2)v
m1 is the mass of the clown = 85kg
u1 is the velocity of the clown = 0m/s (fired out from rest)
m2 is the mass of the cannon = 480kg
u2 is the velocity of the cannon = 18m/s
Let v me the recoil speed of the cannon
Substitute into the formula
85(0)+480(18) = (85+480)v
0+8640 = 565v
v = 8640/565
v = 15.29m/s
Hence the recoil speed of the cannon is 15.29m/s
Sound waves!!!!!!!!!!!!!!!
To solve this problem we will apply the concepts of Boiling Point elevation and Freezing Point Depression. The mathematical expression that allows us to find the temperature range in which these phenomena occur is given by
Boiling Point Elevation
Here,
= Constant ( Different for each solvent)
m = Molality
Freezing Point Depression
Here,
Constant ( Different for each solvent)
m = Molality
According to the statement we have that
From the two previous relation we can find the ratio between them, therefore
We already know the change in the freezing point, then
The temperature difference in the boiling point is 100°C (Aqueous solution), therefore
Therefore the boiling point of an aqueous solution is