Which part of the iceberg displaces water equal in weight to the buoyant force

2 answers:

6 0

Whoa ! Wait a second. The weight of the displaced water
is ALWAYS equal to the buoyant force.

In the case of a floating object ... whether it's an iceberg or
a dead fly ... the part that's under the surface is the part that's
displacing water.

Westkost [7]3 years ago

6 0

The bit that's below the sea level = most of it = part of the reason why the Titanic was "holed below the water line" and thus doomed to sink. Most of a berg is below the water line.

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In the process of changing a flat tire, a motorist uses ahydraulic jack. She begins by applying a force of 45 N to the inputpist

Verdich [7]

Answer:

3100.05 N

Explanation:

$F_1$ = Force on piston = 45 N

$r_1$ = Radius of piston

$r_2$ = Radius of plunger

$\dfrac{r_2}{r_1}=8.3$

From Pascal's law we have

$\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2}\\\Rightarrow F_2=\dfrac{F_1A_2}{A_1}\\\Rightarrow F_2=\dfrac{F_1\pi r_2^2}{\pi r_1^2}\\\Rightarrow F_2=\dfrac{F_1r_2^2}{r_1^2}\\\Rightarrow F_2=F_1\dfrac{r_2^2}{r_1^2}\\\Rightarrow F_2=45\times 8.3^2\\\Rightarrow F_2=3100.05\ N$

The force is 3100.05 N

3 0

3 years ago

The angle of elevation from a point on the ground to the top of a pyramid is 37 degrees 50' The angle of elevation from a point

Serjik [45]

Answer:

The height of the pyramid is approximately 104 Ft. See the graphic attached.

Explanation:

First, you have to plot to realize that you have two rectangle triangles, formed by the different elevation points of view. From there you can have a system of two equations, with two unknown values.

Equation (1)

$tan 37^{o}50'= \frac{Ph}{x} \\\\Ph=tan 37^{o}50' x= 0.7766 x$