Answer:
36.4 mph
Explanation:
Average speed is .
After substitution, this is .
The average speed, therefore, reduces to 36 mph, or about 36.4 mph.
A change from one form of energy into another is called
2 answers:
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Answer:
T = 365246.01 N (↑)
Explanation:
We must show the image, in order to explain the solution.
Then, we apply
∑ Fy = 0 (+↑)
Ff - W - T = 0 ⇒ T = Ff - W
We can get the the buoyant force (Ff) as follows:
Ff = ρ*g*V
where V is obtained using the equation
V = (1/3)*π*r²*h
we get r as follows
(20 cm / 30 cm) = (r / 20 cm) ⇒ r = 13.33 cm = 0.133 m
h = 20 cm = 0.20 m
then
V = (1/3)*π*r²*h = V = (1/3)*π*(0.133 m)²*(0.20 m) = 37.23 m³
then we get the buoyant force (Ff)
Ff = ρ*g*V = (1000 Kg/m³)*(9.81 m/s²)*(37.23 m³) = 365262.51 N
Finally, we use the equation
T = Ff - W = 365262.51 N - 16.5 N = 365246.01 N (↑)
