3 years ago

How can you show positive body languages with your mouth

Physics

1 answer:

sergey [27]3 years ago

7 0

By just smiling. It normally makes you look more happy.And if your happy that's positive body languge

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A pipe branches symmetrically into two legs of length L, and the whole system rotates with angular speed ω around its axis of sy

andre [41]

Answer:

Check the explanation

Explanation:

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3 years ago

Which would be a good analogy of wave motion

inessss [21]

I think (C )
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3 years ago

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PLS HELP WITH THIS DENSITY QUESTIONS AND WHEN SHOWING STEPS PLS USE GRASS

STatiana [176]

Answer:

Explanation:

Density = mass/volume

132g/(48.9 cm³) = 2.7 g/cm³

(27 g)/(3 cm³) = 9 g/cm³

512 g/(65 cm³) = 7.9 g/cm³

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3 years ago

A 59.3 kg diver jumps off a board

ser-zykov [4K]

The board is 2.50m high.

Why?

We can calculate how high was the board applying the Law of Conservation of Mechanical Energy. This Law states that the mechanical energy (kinematic and potential) will be conserved during the motion.

It can be described with the following formula:

$E_{M_{1}}=E_{M_{2}}\\\\PE_{1}+KE_{1}=PE_{2}+KE_{2}$

$PE=m*g*h\\KE=\frac{1}{2}m*v^{2}$

At the top of the boar, the kinetic energy is equal to 0.

At the water, the potential energy is equal to 0.

So,

$PE_{1}=KE_{2}\\\\m*g*h=1450J\\\\59.3kg*9.8\frac{m}{s^{2}}*h=1450J\\ \\h=\frac{1450J}{59.3kg*9.8\frac{m}{s^{2}}}=2.50m$

Hence, we have that the board is 2.50m high.

Have a nice day!

6 0

4 years ago

A chef fills 50cm3 container with 250g of cooking oil what is the density of the oil?

Flura [38]

Given that,

Mass, m = 250 g

Volume of the container, V = 50 cm³

To find,

The density of the oil.

Solution,

Density = mass/ volume

The computation for density is as follows :

$\rho =\dfrac{m}{V}\\\\\rho =\dfrac{250\ g}{50\ cm^3}\\\\=5\ g/cm^3$

So, the density of the oil is $5\ g/cm^3$ .

8 0

3 years ago