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Lapatulllka [165]
3 years ago
14

A main difference between gravitational and electric forces is that electrical forces

Physics
1 answer:
ANTONII [103]3 years ago
7 0
You can’t just do this tm u have to do it now
You might be interested in
Determine the voltage of source v2 in order for a 50a current to be delivered to the 0.5 ohm load resistor.
USPshnik [31]

<u>Answer</u>

25 Volts

<u>Explanation</u>

Ohm's law states that the current flowing though a fixed resistor is directly proportional to the voltage drop across it.

V ∝ I

V = RI Where R is the resistance.

V = 0.5 × 50

  = 25 V

5 0
3 years ago
The eyes of many older people have lost the ability to accommodate, and so an older person’s near point may be more than 25 cm f
tensa zangetsu [6.8K]

Answer:

Smaller refractive power

Explanation:

The refractive power of an eye is the extent to which it can converge or diverge the light rays.

Near point is the the closest point for an eye such that when an object is placed at that point the image it forms is sharp and clearly visible to the eye.

A the person ages, the ciliary muscles of the eyes weakens and as a result the lens contracts and the formation of the image takes place behind the retina instead of forming at the retina.

Thus the near point also increases and the refractive power becomes smaller.

4 0
3 years ago
An unstretched ideal spring hangs vertically from a fixed support. A 0.4 kg object is then attached to the lower end of the spri
musickatia [10]

Answer:

The correct answer will be "0.25 sec".

Explanation:

The graph of the given question is attached below.

According to the graph of the question,

Time,

T = 1 sec

For the upward velocity,

⇒ t = \frac{T}{4}

By putting the value, we get

⇒    =\frac{1}{4}

⇒    =0.25 \ sec

8 0
3 years ago
Describe how an electromagnet can make a motor run.
irina [24]
An electric motor converts electrical energy into physical movement. Electric motors generate magnetic fields with electric current through a coil. The magnetic field then causes a force with a magnet that causes movement or spinning that runs the motor.
6 0
3 years ago
What is the function of concrete shielding in a nuclear reactor?*
Reptile [31]

The function of concrete shielding in a nuclear reactor is: <u>to contain radiation.</u>

<u>Explanation</u>:

The reactor core in the nuclear reactor is placed in a steel pressure vessel. The steel vessel is then shielded by a thick layer of concrete. The concrete shielding is done to protect the workers from radiation.

The nuclear power station must be built on hard solid rock as the reactor is heavy in structure. The radiation emitted from the reactor may harm the human being. To avoid this, the concrete shield is made to prevent the emission of radiation.

3 0
4 years ago
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