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Pachacha [2.7K]

3 years ago

5

What type of device is a car engine?

1 answer:

rusak2 [61]3 years ago

7 0

heat engine that uses work to move heat

mark brainliest :)

You might be interested in

What is the momentum of a golf ball with a mass of 2 kg and a velocity of 10 m/s

jarptica [38.1K]

Answer:

20 m/s

Explanation:

3 0

3 years ago

A water storage tank has the shape of a cylinder with diameter 14 ft. It is mounted so that the circular cross-sections are vert

Allisa [31]

Answer:

$\%A_F=77.335\%$

Explanation:

Given:

diameter of tank, $d=14\ ft$

level of the tank filled in its horizontal position, $h=13\ ft$

Now refer the schematic that show water with blue colour.

The triangle ORQ is symmetric about OS as it comes from center O on the cord QR at S.

$RO=QO=7\ ft$ (∵ radius of the cylinder)

$RS=\sqrt{RO^2-OS^2}$

$RS=3.6055\ ft$

Now the area of triangle ORQ:

$A_t=\frac{1}{2}\times QR\times OS$

$A_t=RS\times OS$

$A_t=3.6055\times 6$

$A_t=21.6333\ ft^2$

Now the angle ROS:

$\cos\theta=\frac{OS}{OR}$

$\theta=\cos^{-1}(\frac{6}{7} )$

$\theta=31.0027^{\circ}$

<u>Therefore the reflex angle ROQ:</u>

$\rangle ROQ=360^{\circ}-\theta^{\circ}$

$\rangle ROQ=360^{\circ}-31.0027^{\circ}$

$\rangle ROQ=328.9973^{\circ}$

Now the area of sector ROQPR:

We have the area of full circle, $A=\pi.r^2$

where:

r = radius of the circle

hence for sector:

$A_S=\pi\times 7^2\times \frac{328.9973}{360}$

$A_S=140.6811\ ft^2$

Now the cross sectional area filled with water:

$A_F=A_S+A_t$

$A_F=140.6811-21.6333$

$A_F=119.0478\ ft^2$

Total cross sectional area of tank:

$A=\pi.r^2$

$A=\pi\times 7^2$

$A=153.9380\ ft^2$

Now the percentage of total capacity used:

$\%A_F=\frac{A_F}{A}\times 100\%$

$\%A_F=\frac{119.0478}{153.9380} \times 100$

$\%A_F=77.335\%$

5 0

3 years ago

The large piston in a hydraulic lift has a radius of 250 cm^2. What force must be applied to the small piston in order to raise

inn [45]

Based on the data provided, the force that must be applied at the small piston is f = 1500 × 9.81 × 250/A.

<h3>What is the Pascal principle?</h3>

Pascal's principle states that the pressure applied to an enclosedfluid is transmitted undiminished tp every portion of the fluid.

Mathematically:

f/a= F/A

where

f is the force applied to the small piston
a is the area of the small piston
F is the force at the large piston
A is the area of the large piston

Therefore:

f = Fa/A

Since the area of the large piston is not given

f = 1500 × 9.81 × 250/A

Therefore, the force that must be applied at the small piston is f = 1500 × 9.81 × 250/A.

Learn more about Pascal's principle at: brainly.com/question/4262025

4 0

2 years ago

In bacteria, what is contained within the is elements?

Debora [2.8K]

In bacteria, inverted repeats are contained within the IS elements. Inverted repeats are defined as nucleotides which contain a single-stranded sequence that flows downwards. The bacteria contains cytoplasm which is a material in a living cell and it doesn't have a nucleus.<span>
</span>

7 0

3 years ago

A 10kg ball has a momentum of 40 kg.m/s. What is the ball’s speed.

Whitepunk [10]

Answer:

<h2>4 m/s</h2>

Explanation:

The speed of the ball can be found by using the formula

$s= \frac{p}{m} \\$

p is the momentum

m is the mass

From the question we have

$v = \frac{40}{10} = 4 \\$

We have the final answer as

<h3>4 m/s</h3>

Hope this helps you

7 0

3 years ago