Ask question

Ask question

All categories

3 years ago

6

A tank 20 m deep and 7m wide is layered with 8m of oil,6m of water and 5m of mercury.complete total hydroatatic force.(density o

f oil and mercury is 800 and 13600kg/m respectively ).

1 answer:

professor190 [17]3 years ago

8 0

Answer:

F = 3.03 10⁷ N

Explanation:

We will eat by calculating the pressure in the tank

P = ρ g h

the pressure totals the sum of the pressure of each liquid

P_total = P_oil + P_water + P_Hg

P_total = ρ_oil g h_oil + ρ_water g h_water + ρ_Hg g h_Hg

P_total = g (ρ_oil h_oil + ρ_water h_water + ρ_Hg h_Hg)

P_total = 9.8 (800 8 + 1000 6 + 13 600 5)

P_total = 7,879 10⁵ Pa

The definition of Pressure is

P = F / A

F = P A

The area of a tank is the area of a circle

A = π r² = π d² / 4

F = P π d² / 4

let's calculate

F = 7,879 10⁵ π 7²/4

F = 3.03 10⁷ N

In this calculation the atmospheric pressure was not taken into account because they ask the hydrostatic pressure

You might be interested in

A Neglecting air resistance, a ball projected straight upward so it remains in the air for 10 seconds needs an initial speed of

ololo11 [35]

Answer:

The initial velocity is 50 m/s.

(C) is correct option.

Explanation:

Given that,

Time = 10 sec

For first half,

We need to calculate the height

Using equation of motion

$v^2=u^2+2gh$

$h =\dfrac{v^2}{2g}$ ....(I)

For second half,

We need to calculate the time

Using equation of motion

$h =ut+\dfrac{1}{2}gt_{2}^2$

$h=0+\dfrac{1}{2}gt_{2}^2$

$t_{2}=\sqrt{\dfrac{2h}{g}}$

Put the value of h from equation (I)

$t_{2}=\sqrt{\dfrac{2\times v^2}{g^2}}$

$t_{2}=\dfrac{v}{g}$

According to question,

$t_{1}+t_{2}=10$

$t_{1}=t_{2}$

Put the value of t₁ and t₂

$\dfrac{v}{g}+\dfrac{v}{g}=10$

$\dfrac{2v}{g}=10$

$v=\dfrac{10\times g}{2}$

Here, g = 10

The initial velocity is

$v=\dfrac{10\times10}{2}$

$v=50\ m/s$

Hence, The initial velocity is 50 m/s.

3 0

3 years ago

MOST elements on the periodic table are

lidiya [134]

Answer:

B

Explanation:

6 0

3 years ago

Read 2 more answers

Please answer both questions and not just one. Thanks!

Margarita [4]

It would be d and c hoped i helped!

8 0

3 years ago

The blades in a blender rotate at a rate of 6100 rpm. When the motor is turned off during operation, the blades slow to rest in

MissTica

Answer:

<em>155.80rad/s</em>

Explanation:

Using the equation of motion to find the angular acceleration:

$\omega_f = \omega_i + \alpha t$

$\omega_f$ is the final angular velocity in rad/s

$\omega_i$ is the initial angular velocity in rad/s

$\alpha$ is the angular acceleration

t is the time taken

Given the following

$\omega_f = 6100rpm$

Time = 4.1secs

Convert the angular velocity to rad/s

1rpm = 0.10472rad/s

6100rpm = x

x = 6100 * 0.10472

x = 638.792rad/s

$\omega_f = 638.792rad/s\\$

Get the angular acceleration:

Recall that:

$\omega_f = \omega_i + \alpha t$

638.792 = 0 + ∝(4.1)

4.1∝ = 638.792

∝ = 638.792/4.1

∝ = 155.80rad/s

<em>Hence the angular acceleration as the blades slow down is 155.80rad/s</em>

5 0

2 years ago

What is artificial intelligence

PilotLPTM [1.2K]

the theory and development of computer systems able to perform tasks that normally require human intelligence, such as visual perception, speech recognition, decision-making, and translation between languages.

8 0

3 years ago

Read 2 more answers