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ValentinkaMS [17]
3 years ago
8

A few Physics questions regarding circuits and electricity.

Physics
1 answer:
Lunna [17]3 years ago
6 0

Answer:

7.series

Explanation:

in parallel is like if one bulb stops work all the others will stop too

in series it remains constant or it wont change throughout a series circuit

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How does the mass of an object affect the outcome when an unbalanced force acts on it?
Margarita [4]

Answer:

By Newton's second law, it reduces the magnitude of the acceleration, without changing its direction.

F = unbalanced force

m = mass

a = acceleration

a = F/m

3 0
3 years ago
What is cos(33°)?<br><br> A. 0.33<br> B. 0.84<br> C. 0.53<br> D. 0.65
Sav [38]
The answer would be b 0.84
8 0
3 years ago
What happens when an object becomes cold?
Lyrx [107]

Answer:

Heat is removed from it.

Explanation:

A object will become cold when it loses its heat to its surroundings. I would look up the 3 Principles of Heat Transfer.

I hope this helped! :)

6 0
3 years ago
If a train (travelling from Albuquerque to Atlanta) is moving 33.9 meters per second when it accelerates at -2.02 m/s^2 for 1.01
maxonik [38]

Answer:

The final velocity is 31.86 m/s.

Explanation:

The final velocity can be found using the following equation:

V_{f} = V_{0} + at

Where:

V_{f} is the final velocity =?

V_{0} is the initial velocity = 33.9 m/s

a is the acceleration = -2.02 m/s²

t is the time = 1.01 s

V_{f} = V_{0} + at = 33.9 m/s + (-2.02 m/s^{2})*1.01 s = 31.86 m/s

Therefore, the final velocity is 31.86 m/s.

I hope it helps you!

5 0
3 years ago
Suppose you wish to construct a motor that produces a maximum torque whose magnitude is 1.7 × 10-2 N·m. The coil of the motor ha
Len [333]

Answer:

86 turns

Explanation:

Parameters given:

Magnetic torque, τ = 1.7 * 10^(-2) Nm

Area of coil, A = 9 * 10^(-4) m²

Current in coil, I = 1.1 A

Magnetic field, B = 0.2 T

The magnetic toque is given mathematically as:

τ = N * I * A * B

Where N = number of turns

To find the number of turns, we make N subject of formula:

N = τ/(I * A * B)

Therefore:

N = (1.7 * 10^(-2)) / (1.1 * 9 * 10^(-4) * 0.2)

N = 85.85 = 86 turns (whole number)

The number of turns must be 86.

3 0
4 years ago
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