What is the physical energy that stimulates sight?

Physics

2 answers:

erastova [34]3 years ago

6 0

B . light is <span>the physical energy that stimulates sight</span>

Goshia [24]3 years ago

3 0

Answer:

The answer is B. Light

Explanation:

The sense of sight is one of the main sensory abilities of humans and many other animals, while the term light is considered as part of the radiation field known as the electromagnetic spectrum. Light is the part of electromagnetic radiation that can be perceived by the human eye; what is known as vision, the ability to interpret the environment thanks to the rays of light that reach the eye.

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a straight, 2.5-m wire carries a typical household current of 1.5 a (in one direction) at location where the earth's magnetic fi

kotykmax [81]

Answer:

The magnitude of the force is $F=2.1*10^{-4}N$

The direction is from south to north i.e upward

The magnitude of the force is $F=2.1*10^{-4}N$

The direction is towards the west

The magnitude of the force is $F=2.1*10^{-4}N$

the direction of the magnetic field is parallel to the direction of the current (south to north ) hence the direction in 0 in comparison to the direction of the current

From the value of force we got the answer to this question is No

Explanation:

Generally magnetic force is mathematically represented as

$F = BIL$

Where the B is the magnitude of the magnetic field which is given as

$B= 0.55 guass = \frac{0.55}{10000} = 0.55 *10^{-4}T$

$I$ is the current with a value of $I = 1.5A$

L is the length of the wire given as $L =2.5m$

Substituting the value

$F =(0.55 *10^ {-4}) (1.5)(2.5)$

$F=2.1*10^{-4}N$

For the first case where the current is moving from west to east and we are told that the magnetic field is from south to north the according to Fleming's right hand rule the force(exerted by earths magnetic field ) would be moving from south to north (i.e upward)

For the second case where current is moving vertically upwards the direction of the force is to the west according to Fleming's right hand rule

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Limestone cave can develop when Limestone rock is weathered. The weathering of the rock leaves an empty space that forms the cav

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Answer:

Wind blowing across the surface eroded the limestone.

Explanation:

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