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Zanzabum
2 years ago
13

What are two ways to increase frictional force?

Physics
1 answer:
Mekhanik [1.2K]2 years ago
7 0
Ways to increase friction - increase the area of contact - increase the roughness of the contact materials - dry up or take away any lubricant - increase the pressure on the contact
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is the following sentence true or false? the faster the particles of a substance are moving, the more energy they have.
ryzh [129]
Im pretty sure false but not 100% :) 
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Which area on the line has both some kinetic energy and some gravitational energy?
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A resistor R and another resistor 2R are connected in a series across a battery. If heat is produced at a rate of 10W in R, then
alekssr [168]

Answer:

Option B

Solution:

As per the question:

Heat produced at the rate of 10 W  

The resistor R and 2R are in series.

Also, in series, same current, I' passes through each element in the circuit.

Therefore, current is constant in series.

Also,

Power,P' = I'^{2}R

When current, I' is constant, then

P' ∝ R

Thus

\frac{P'}{2R} = \frac{10}{R}

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5 0
3 years ago
Why is nut-cracker 2nd class lever?​
Dmitry_Shevchenko [17]

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4 0
3 years ago
Apakah yang berlaku kepada kekuatan medan magnet jika satu lagi sel kering 1.5 v ditambahkan​
ad-work [718]

Answer:

The magnetic field is doubled.

Explanation:

What happens to the strength of the magnetic field if one more 1.5 v dry cell is added?

The magnetic field due to a current carrying conductor is directly proportional to the current flowing in the wire.

If we connect one more battery of 1.5 V so the voltage is doubled and according to the Ohm's law, as the resistance of wire is constant, so the current in the wire is also doubled.

When the current doubles, the magnetic field produced by the wire is also  doubled.

8 0
2 years ago
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