3 years ago

How do you know or find out if an element is a solid, liquid or gas?

Physics

1 answer:

lubasha [3.4K]3 years ago

3 0

Liquid is not a solid object so make sure you define them

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Earth orbits 1 AU from the Sun, and the Oort cloud extends from about 10,000 to 100,000 AU from the Sun. If you represent Earth’

sertanlavr [38]

Explanation:

Earth’s orbit around the Sun represented as :

1 AU = 4 inches

Therefore,

Inner edge of the Oort Cloud represented as :

10,000 AU = 40,000 / 63360 = 0.631 miles

Outer edge of the Oort Cloud represented as:

100,000 AU = 400,000 / 63360 = 6.31 miles

4 0

4 years ago

A particular uniform solid disk has a mass of 24.0 kg and a radius of 1.50 m. The disk is rotating about an axle passing through

Thepotemich [5.8K]

Answer:

$L = 81 Kg.m^2/s^2$

Explanation:

Angular momentum is calculated as:

L = I * ω

The inertia of the disc is:

$I = 1/2 * M *R^2 = 1/2 * 24 * (1.5)^2=27Kg.m^2$

So, the angular momentum is:

$L = 27 Kg.m^2* 3rad/s=81Kg.m^2/s^2$

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4 years ago

Calculate the ratio of the drag force on a passenger jet flying with a speed of 1200 km/h at an altitude of 10 km to the drag fo

Sonbull [250]

Answer:

$2.267$

Explanation:

Drag force is given by

$F=\dfrac{1}{2}\rho Av^2C$

C = Drag coefficient is constant

A = Area is constant

$v_1$ = Velocity of the passenger jet = 1200 km/h = $\dfrac{1200}{3.6}\ \text{m/s}$

$v_2$ = Velocity of the prop plane = $\dfrac{1}{4}v_1$

$\rho_1$ = Density of the air where the jet was flying = $0.38\ \text{kg/m}^3$

$\rho_2$ = Density of the air where the prop plane was flying = $0.67\ \text{kg/m}^3$

$F\propto \rho v^2$

$\dfrac{F_1}{F_2}=\dfrac{\rho_1 v_1^2}{\rho_2 v_2^2}\\\Rightarrow \dfrac{F_1}{F_2}=\dfrac{0.38 v_1^2}{0.67 (\dfrac{1}{4}v_1^2)}\\\Rightarrow \dfrac{F_1}{F_2}=2.267$

The ratio of the drag forces is $2.267$ .

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3 years ago

A snail con move at 3cm/s if it’s ke is 300joules what it it’s mass?

ch4aika [34]

Answer:

Explanation: V = 3 cm/s = 0.03 m/s

BY THE FORmULA OF K.E

K.E = 1/2 mV^2

300 =1/2 m (0.03)^2

m = 300 x 2/0.0009

m= 666666.66kg

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3 years ago

How do we know the light inside the fridge turns off if we never see it turn off?

mariarad [96]

Answer:

They are automated to turn off when you shut the door but if you leave it open barely enough or climb into the fridge yourself you can see that it turns off.

Explanation:

6 0

3 years ago

Read 2 more answers