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In-s [12.5K]
3 years ago
13

30 points plz help ill do anything... literally anything.

Physics
1 answer:
ruslelena [56]3 years ago
3 0

Answer:

1. 2.5s

Explanation:

1. For time, divide Distance / speed

25m / 10

=2.5s

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Please help , will surely mark As brainlest
Oliga [24]
The north arrow of the compasses will all point to the south since opposite poles attract. I have put an example picture below.

For the horse shoe magnet the magnetic field line will also go from north to south. I have put a picture of this below



8 0
3 years ago
When a material possesses identical mechanical properties along all directions, it is called a ________ material?
Hunter-Best [27]
<span>This would be an isotropic object. Having isotropy means that, in every direction that the object could be measured, a similar (or the same) value or measure would be reached. This allows an object to be easier to shape and makes it easier to understand and predict the object's behavior under different circumstances.</span>
3 0
3 years ago
Why do soundwaves move faster than the ground than through the air​
Sati [7]

Answer:

Particles of matter are packed more tightly in the ground than in the air

Explanation:

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8 0
4 years ago
The battery charger for an mp3 player contains a step-down transformer with a turns ratio of 1:29, so that the voltage of 120 v
kifflom [539]
Transformer contains two coils: primary and secondary. They allow change of voltage to lower or higher value. In first case we have step-down and in second case we have step-up transformer.

Formula used for transformer is:
\frac{ N_{1} }{N_{2} } = \frac{ V_{1} }{V_{2} }

Where:
N1 = number of turns on primary coil
N2 = number of turns on secondary coil
V1 = voltage on primary coil
V2 = voltage on secondary coil

In a step-down transformer primary coil has more turns than secondary coil. So the ratio 1:29 means that for each turn on secondary coil we have 29 turns on primary coil.

We can solve the equation for V2:
{V_{2}}=\frac{ V_{1}{N_{2} }  }{N_{1} } \\  {V_{2}}=\frac{ 120*{x }  }{29x } \\  {V_{2}}=4.14V

Secondary coil provides voltage of 4.14V.
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4 years ago
How high up is a 3 kg object that has 300 joules of energy?
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Use the formula pe=mgh to answer the height <span />
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3 years ago
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