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Dimas [21]
3 years ago
9

Inside a stereo speaker, you will find two permanent magnets: one on the cone and one near the cone. True of false?

Physics
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

True  there is the permanent magnet and the electromagnet.

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An object has a -8 C charge. The object breaks into two pieces. One piece has a charge of -2 C. What is the exact charge (in C)
Varvara68 [4.7K]

As we know the property of charge that charge is always conserved

so we can say

Q = q_1 + q_2

here we know that total charge is

Q = -8 C

and we also know that

q_1 = -2C

from above equation we can say

-8 = -2 + q_2

q_2 = -8 +2 = -6 C

so the other charge will be -6 C

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3 years ago
Electric charges that are different
Naya [18.7K]
A.) attract to each other
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4 years ago
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A go cart with a mass of 60 kg is moving at a rate of 10 m/s. How much Kinetic Energy does the go cart have?
maria [59]

Answer:

<h2>3000 J</h2>

Explanation:

The kinetic energy of an object can be found by using the formula

k =  \frac{1}{2} m {v}^{2}  \\

m is the mass in kg

v is the velocity in m/s

From the question

m = 60 kg

v = 10 m/s

We have

k =  \frac{1}{2}  \times 60 \times  {10}^{2}  \\  = 30 \times 100 \\  = 3000

We have the final answer as

<h3>3000 J</h3>

Hope this helps you

6 0
3 years ago
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The luxury liner Queen Elizabeth 2 has a diesel-electric powerplant with a maximum power of 84 MW at a cruising speed of 35.0 kn
frosja888 [35]

Answer:

F = 4669.201\,kN

Explanation:

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\dot W = F\cdot v

Where F and v are the forward force and speed of ship measured in newtons and meters per second, respectively.

The forward force can be determined by clearing it in the expression described above:

F = \frac{\dot W}{v}

F = \frac{84\times 10^{3}\,kW}{(35\,knots)\cdot \left(\frac{0.514\,\frac{m}{s} }{1\,knot} \right)}

F = 4669.201\,kN

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3 years ago
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How is a revolution related to a year
nikdorinn [45]
Revolution means orbiting around another body. 
<span>A year is the time for a planet to complete one orbit around the Sun. 100% sure

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3 years ago
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