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Art [367]
3 years ago
11

A glass rod is rubbed briefly with silk and the rod becomes able to attract and lift a number of small pieces of paper. If the r

od is rubbed with silk for a longer period of time, explain what will happen and why.
QUICKLY PLEASE!
Physics
2 answers:
ser-zykov [4K]3 years ago
8 0

Answer:

it will have a stronger attraction force

Explanation:

PIT_PIT [208]3 years ago
3 0
The person above is correct
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Problem 20.75 A thin rectangular coil 2 cm by 9 cm has 44 turns of copper wire. It is made to rotate with angular frequency 110
NeTakaya

Answer:

(a) 16.5528 V

(b) 827.64 W

Explanation:

(a)

The formula for maximum emf produced in a coil is given as

E₀ = BANω.................. Equation 1

Where E₀ = maximum emf produced in the coil, B = magnetic Field, A = Area of the rectangular coil, N = number of turns, ω = angular velocity.

Given: B = 1.9 T, N = 44 turns, ω = 110 rad/s, A = 2×9 = 18 cm² = 18/10000 = 0.0018 m²

Substitute into equation 1

E₀ = 1.9(44)(110)(0.0018)

E₀ = 16.5528 V

(b)

Maximum power

P₀ = E₀²/R...................... Equation 2

Where R = Resistance.

Given: R = 50 ohms, E₀ = 16.5528 V

Substitute into equation 2

P₀ = 50(16.5528)

P₀ = 827.64 W

8 0
3 years ago
What is biomass energy?
exis [7]
<span>a. the chemical energy stored in living things i hope this helps you</span>
5 0
3 years ago
Read 2 more answers
Two cars are driving towards each other in a straight line. Car A is 1400 kg and driving at
Alex787 [66]

The final momentum of the system would be 6680 Kg m/s

<h3>What is momentum?</h3>

It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.

Mathematically the formula of the momentum is

P = mv

Two cars are driving toward each other in a straight line. Car A is 1400 kg and driving at 11 m/s. Car B is 1090 kg and driving at 8 m/s. If the two cars collide inelastically, As we know that the momentum of a system is conserved during the collision

initial momentum = final momentum

the initial momentum of the system = 1400 ×11 + 1090×(-8)

                                                           = 6680 Kg m/s

The final momentum of the system =  6680 Kg m/s

Thus,The final momentum of the system would be 6680 Kg m/s

Learn more about momentum from here

brainly.com/question/17662202

#SPJ1

7 0
2 years ago
Describe a characteristic of each layer of the atmosphere
Katena32 [7]
Troposphere. The troposphere is the lowest layer of our atmosphere.


Stratosphere. The infamous ozone layer is found within the stratosphere.

Mesosphere. Most meteors burn up in the mesosphere.

Thermosphere. Many satellites actually orbit Earth within the thermosphere

Exosphere. Considered to be the actual "final frontier"

Ionosphere. The electrically charged atoms and molecules that are formed in this way are called ions, giving the ionosphere its name
7 0
3 years ago
An aluminum cup of 150 cm3 capacity is completely filled with glycerin at 23°C. How much glycerin will spill out of the cup if t
AVprozaik [17]

Answer:

1.19cm^3 of glycerine

Explanation:

Let Vo= 150cm^3 for both aluminum and glycerine, using expansion formula:

Volume of spill glycerine = change in volume of glycerine - change in volume of aluminum

Volume of glycerine = coefficient of volume expansion of glycerine * Vo* change in temperature - coefficient of volume expansion of Aluminum*Vo* change temperature

coefficient of volume expansion of aluminum = coefficient of linear expansion of aluminum*3 = 23*10^-6 * 3 = 0.69*10^-4 oC^-1

Change in temperature = 41-23 = 18oC

Volume of glycerine that spill = (5.1*10^-4) - (0.69*10^-4) (150*18) = 4.41*10^-4*2700 = 1.19cm3

3 0
3 years ago
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