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olchik [2.2K]
3 years ago
11

Which device typically use DC current to operate?

Physics
2 answers:
aleksklad [387]3 years ago
5 0

Answer: C. wrist-watch

Explanation:

Alternating current refers to the current which changes direction. The current which is supplied to our home is alternating current which is used to run home appliances such as television, washing machine, electric hair dryer, ceiling fan etc.

A current which flows in only one direction is known as direct current. A cell or a battery is a source of direct current. A wrist watch runs on direct current provided by a cell attached to it.

Artemon [7]3 years ago
4 0
C.) Wristwatch uses DC current to operate..
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dem82 [27]

Answer:

<em>1,378.9ms²</em>

Explanation:

Given the following

Distance S = 70.6m

Time t = 0.32secs

Initial velocity = 0m/s

Required

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Using the equation of motion

S = ut+1/2at²

Substitute

70.6 = 0+1/2a(0.32)²

70.6 = 0.0512a

a = 70.6/0.0512

a = 1,378.9

<em>Hence the acceleration is 1,378.9ms²</em>

7 0
2 years ago
The image shows mountains in Alaska.
zalisa [80]

Answer:

A syncline is visible.

Explanation:

A syncline is visible.

8 0
2 years ago
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A flashlight converts?
sammy [17]

Answer:

Energy conversion in flashlight.

Explanation:

When the switch of a flashlight is on, then the batteries inside them will be connected in a circuit and chemical energy from the batteries will be converted into electrical energy and then the electrical energy will be converted into light energy.

Light energy is also called electromagnetic energy.

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1. Electrical energy into electromagnetic energy is the answer.

4 0
2 years ago
As the launch force increase the launch velocity will
FrozenT [24]

Answer:

As the launch force increase the launch velocity will

<em><u>Increase</u></em>

The reason for your answer to number six is because

<em><u>There is a direct relationship between force and acceleration.</u></em>

<em><u /></em>

Explanation:

<em>It is known all over the place that, there is a direct relationship between Force and acceleration of an object leading to an increase in force being directly proportional to the increase in the acceleration of the given object and vice versa.</em>

5 0
2 years ago
) A 1000 kg car travelling at 50 m/s slams into a 1500 kg parked truck in an inelastic manner as
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(a)

KE = m v^2 / 2 = (1200 kg)(20 m/s)^2 / 2 = 240,000 J


(b)

The energy is entirely dissipated by the force of friction in the brake system.


(c)

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(d)

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The magnitude of the friction force is 4800 N.
8 0
3 years ago
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