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4 years ago

Will give brainlist if answer question!

Physics

1 answer:

ella [17]4 years ago

8 0

Answer:

DE LA SEGUNDA LEY DE NEWTON

Explanation:

<em>m</em> = 16000 N/ $5.0 m/s^{2}$ = 3200 kg

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A weightlifter pulls on a 225 kg bar with 1600 N of force, but the bar does not move. How much work is performed?

KIM [24]

Answer:

Not alot

I think its 24.5N

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3 years ago

A vertical spring stretches 4.0 cm when a 12-g object is hung from it. The object is replaced with a block of mass 28 g that osc

marin [14]

Answer:

Time period of the osculation will be 0.0671 sec

Explanation:

It is given a vertical spring is stretched by 4 cm

So change in length of the spring x = 4 cm = 0.04 m

Mass which is hung from it m = 12 gram = 0.012 kg

Sprig force will be equal to weight of the mass

So $kx=mg$

$k\times 0.04=0.012\times 9.8$

k = 244.7 N/m

Now new mass is m = 28 gram = 0.028 kg

So time period with new mass will be

$T=2\pi \sqrt{\frac{m}{k}}$

$=2\times 3.14 \sqrt{\frac{0.028}{244.7}}=0.0671sec$

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3 years ago

Which statements about water are true? Choose more than one answer.

insens350 [35]

water is not found in the periodic table.

water has a lot of empty space.

I think that's it I know those to are true.

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3 years ago

An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes 2060 × 103 seconds (about

Fittoniya [83]

Answer:

Acceleration, $a=2.22\times 10^{-3}\ m/s^2$

Explanation:

It is given that,

Time period of revolution of the moon, $T=2060\times 10^3\ s$

If the distance from the center of the moon to the surface of the planet is, $h=235\times 10^6\ m$

The radius of the planet, $r=3.9\times 10^6\ m$

Let a is the moon's radial acceleration. Mathematically, it is given by :

$a=R\times \omega^2$ , R is the radius of orbit

Since, $\omega=\dfrac{2\pi}{T}$

The radius of orbit is,

$R=r+h$

$R=3.9\times 10^6\ m+235\times 10^6\ m=238900000\ m$

So, $a=\dfrac{4\pi^2 R}{T^2}$

$a=\dfrac{4\pi^2 \times 238900000}{(2060\times 10^3)^2}$

$a=2.22\times 10^{-3}\ m/s^2$

Hence, this is the required solution for the radial acceleration of the moon.

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3 years ago

Give several examples of a mechanism, machine or system that has two

blsea [12.9K]

Any large factory that takes multiple machines to manufacture a singular product.

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3 years ago