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4 years ago

8

Rephrase the law of universal gravitation

1 answer:

IRISSAK [1]4 years ago

5 0

The law of universal gravitation says that one object attracts every other object using a proportional force to the mass of the object.

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Total internal reflection can most accurately be described as...

Phoenix [80]

Answer:

a. reflection of all the light at a surface.

Explanation:

When light rays passing from the denser medium to the rarer medium and the angle of incidence is greater than the critical angle, the refraction of light does not take place and the incident ray is totally reflected back into the denser medium. This phenomenon is called total internal reflection.

There are two conditions that need to be fulfilled in order for the total internal reflection to take place:

1. The ray of light should be incident from denser to rarer medium.

2. The angle of incidence should be greater than the critical angle.

Therefore, the correct option will be:

<u>a. reflection of all the light at a surface.</u>

4 0

3 years ago

Two people push on the same door from opposite sides as shown they will only see the door move when

rusak2 [61]

One of them overpowers the other

5 0

4 years ago

Write comparison between Electrical Circuit and Magnetic Circuit.

Anarel [89]

<u>electrial</u><u> </u>

<u> </u><u>In an electrical circuit, electric current flows through the closed path</u>

<u>magnetic</u><u> </u><u>circuit</u><u> </u>

<u>In the magnetic circuit, magnetic flux flows through the closed path</u>

7 0

3 years ago

A closed system consists of 0.3 kmol of octane occupying a volume of 5 m3 . Determine

Alenkinab [10]

Answer:

(a). The weight of the system is 336.32 N.

(b). The molar volume is 16.6 m³/k mol.

The mass based volume is 0.145 m³/kg.

Explanation:

Given that,

Weight of octane = 0.3 kmol

Volume = 5 m³

(a). Molecular mass of octane

$M=114.28\ g/mol$

We need to calculate the mass of octane

Mass of 0.3 k mol of octane is

$M=114.28\times0.3\times1000$

$M=34.284\ kg$

We need to calculate the weight of the system

Using formula of weight

$W=mg$

Put the value into the formula

$W=34.284\times9.81$

$W=336.32\ N$

(b). We need to calculate the molar volume

Using formula of molar volume

$\text{molar volume}=\dfrac{volume}{volume of moles}$

Put the value into the formula

$\text{molar volume}=\dfrac{5}{0.3}$

$\text{molar volume}=16.6\ m^3/k mol$

We need to calculate the mass based volume

Using formula of mass based volume

$\text{mass based volume}=\dfrac{volume}{mass}$

Put the value into the formula

$\text{mass based volume}=\dfrac{5}{34.284}$

$\text{mass based volume}=0.145\ m^3/kg$

Hence, (a). The weight of the system is 336.32 N.

(b). The molar volume is 16.6 m³/k mol.

The mass based volume is 0.145 m³/kg.

3 0

3 years ago

Climatologists and meteorologists both use data to make predictions related to climate and weather. Which statement best indicat

Gekata [30.6K]

Answer:

the answer is A because I did this in 5th grade

3 0

3 years ago