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gayaneshka [121]
3 years ago
8

Why is it so hard to graduate?

Physics
1 answer:
bonufazy [111]3 years ago
4 0
It is hard to graduate because it is a level of understanding how to graduate......you basically have to put effort in to your work or else you fail
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Two children (m = 40 kg each) stand opposite each other on the edge of a merry-go-round. The merry-go-round, which has a mass M
s344n2d4d5 [400]

Answer:

Explanation:

Initially the two boys were sitting on the periphery , total moment of inertia

= 1/2 M  r² + 2mr²     ; M is mass of the merry go round , m is mass of each boy and r is the radius

1/2 x 200 x 2² + 2 x 40 x 2²

= 400 + 320

I₁ =  720 kg m²

Finally  the two boys were sitting at the middle  , total moment of inertia

= 1/2 M  r² + 2m( r/2)²     ; M is mass of the merry go round , m is mass of each boy and r is the radius

1/2 x 200 x 2² + 2 x 40 x 1²

= 400 + 80

I₂  = 480

Now the system will obey law of coservation of angular momentum because no torque is acting on the system.

I₁ω₁ =  I₂ω₂ ,         I₁  and ω₁  are moment of inertia and angular velocity of first case and  I₂  and ω₂ are of second case.

720 X 12 = 480 ω₂

ω₂ = 18 rad / s

3 0
3 years ago
Astronomy can best be described as a/an
ss7ja [257]
Astronomy can best described as the <span>study of objects beyond the Earth's atmosphere - such as other celestrial bodies in our galaxy and other galaxies, starts their movement and formation. (D.)</span>
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3 years ago
The difference between the mass of the nucleus and the mass of the nucleons it contains is converted into ? that holds the nucle
Xelga [282]

Answer:

Binding energy

Explanation:

The energy required to bind the nucleus is called binding energy.

Binding energy is equal to the product of mass defect and square of velocity of light.

Mass defect is the difference of mass of neucleons and the mass of atom.

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List 4 ways to separate mixtures
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1.Paper Chromatography. This method is often used in the food industry. ...

2.Filtration. This is a more common method of separating an insoluble solid from a liquid. ...

3.Evaporation. ...

4Simple distillation. ...
Fractional distillation.
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3 years ago
Group of physics students are asked to demonstrate Ohm’s Law in parallel circuits.  Using their knowledge of Ohm’s Law and the r
astra-53 [7]

The student’s suggestion who provides enough evidence to be able to determine the value of each resistor is student D.

<h3>What is current?</h3>

The current is the stream of charges which flow inside the conductors when connected across the end of voltage.

For the given set of parallel resistors, we need to find the resistance of each resistor.

From the Ohm's law, V =IR

R = V/I

Resistance value depends upon the voltage difference across the resistor and the current flowing through that resistance.

Thus, the student D gives enough evidence to find resistance of the circuit is

Learn more about current.

brainly.com/question/10677063

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8 0
2 years ago
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