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3 years ago

12

Define wheel and axle 4 example of wheel and axle

1 answer:

natita [175]3 years ago

5 0

Answer:

A system of two co-axial cylindersof different diameters which rotate together is called wheel and axle example; the door knob , knob of the tap ,screw driver,water tap

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Find the unbalanced force acting on the object.

gtnhenbr [62]

To find the unbalanced force you have to use the formula *net force=resultant force=unbalanced force =outside force).

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3 years ago

The earth makes one complete revolution around the sun in 365.24 days. Assuming that the orbit of the earth is circular and has

Anni [7]

Answer:

The magnitudes of the speed and acceleration of the Earth are approximately 66,661.217 miles per hour and 47.782 miles per square hour, respectively.

Explanation:

Given that the Earth has a circular orbit and make a revolution at constant speed around the Sun. Then, the kinematic formulas for the speed and acceleration of the planet are, respectively:

Speed

$v = \frac{2\pi\cdot R}{T}$ (1)

Acceleration

$a = \frac{4\pi^{2}\cdot R}{T^{2}}$ (2)

Where:

$v$ - Speed of the planet, measured in miles per hour.

$a$ - Acceleration of the planet, measured in miles per square hour.

$R$ - Radius of the orbit, measured in miles.

$T$ - Period of rotation, measured in hours.

If we know that $R = 93,000,000\,mi$ and $T = 8,765.76\,h$ , then the magnitudes of the speed and acceleration of the planet is:

$v = \frac{2\pi\cdot (93,000,000\,mi)}{8,765.76\,h}$

$v \approx 66,661.217\,\frac{mi}{h}$

$a = \frac{4\pi^{2}\cdot (93,000,000\,mi)}{(8,765.76\,h)^{2}}$

$a\approx 47.782\,\frac{mi}{h^{2}}$

The magnitudes of the speed and acceleration of the Earth are approximately 66,661.217 miles per hour and 47.782 miles per square hour, respectively.

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3 years ago

A sharp knife cut things easily

Lostsunrise [7]

Answer:

its due to less surface area of action

pressure is high

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3 years ago

In the attachment there is a density column where there is colour

Anettt [7]

Answer:

For your kind information, read the question thoroughly!

The bottom is the container part and not the liquid.

I hope it will be useful.

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The second, fourth, and seventh answers apply. Energy in a closed system is conserved, but it can change form

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3 years ago

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