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BartSMP [9]
3 years ago
10

How is a magnetic field generated?

Physics
2 answers:
kiruha [24]3 years ago
4 0
A magnetic field is produced by moving electric charges so B
charle [14.2K]3 years ago
3 0
Gravity is the answer I assume
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A microwave oven has 1200 W. If it receives 120 V of potential difference, what is the current in the microwave?
8_murik_8 [283]

Answer:

10amps

Explanation:

Given data

Power =1200W

Voltage =120V

Required

The current I

From

P=IV

I= P/V

Substitute

I=1200/120

I= 10amps

Hence the current is 10amps

7 0
3 years ago
a box is at rest on a ground. An unbalance force acts on the box causes it to start. The box moves 10 meters in 2 seconds and th
nordsb [41]
The box stopped moving because there was a negative acceleration in the x direction caused by friction.
To find the average speed, simply divide the displacement by time: 10 / 2 = 5 m/s
5 0
2 years ago
Which describes freefall
Sati [7]
A motion where gravity is the only force acting upon it
6 0
3 years ago
What is the connection between change in momentum and impulse
Katena32 [7]
The change in momentum of an object equals the impulse applied to it
6 0
3 years ago
3. When a person is outside of the system and they add energy to the
NISA [10]

Answer:

We show added energy to a system as +Q or -W

Explanation:

The first law of thermodynamics states that, in an isolated system, energy can neither be created nor be destroyed;

Energy is added to the internal energy of a system as either work energy or heat energy as follows;

ΔU = Q - W

Therefore, when energy is added as heat energy to a system, we show the energy as positive Q (+Q), when energy is added to the system in the form of work, we show the energy as minus W (-W).

5 0
3 years ago
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