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3 years ago

Which electromagnetic wave has wavelengths just longer than visible light?

Physics

2 answers:

vlabodo [156]3 years ago

7 0

Infra-red has wavelengths just longer than visible light.

galina1969 [7]3 years ago

6 0

Answer:

Infrared waves

Explanation:

If electromagnetic waves are arranged in increasing order of wavelengths then the order is given as following

1. Gamma rays

2. X rays

3. Ultraviolet waves

4. Visible light

5. Infrared waves

6. micro waves

7. Radio waves

So here we can say that increasing the wavelength means the energy is decreasing as we move towards higher wavelength.

So from above order the larger wavelength with respect to the visible light is given as "Infrared waves"

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Answer:

iron

Explanation:

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4 years ago

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A circuit is set up such that it has a current of 8 A. What would be the new current if the resistance was increased by a factor

RUDIKE [14]

Answer:

4 A

Explanation:

The relationship between current, voltage and resistance in a circuit is given by Ohm's law:

$V=RI$

where

V is the voltage

R is the resistance

I is the current

The equation can also be rewritten as

$I=\frac{V}{R}$

from which we see that the current is inversely proportional to the resistance, R.

In this problem, the initial current is I = 8 A. Then the resistance is doubled:

R ' = 2R

So the new current is

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7 0

3 years ago

Electronic flash units for camera contain a capacitor for storing the energy used to produce the flash. In one such unit, the fl

nadezda [96]

Answer:

420J

Explanation:

Power is the time rate of change in energy. Power is the ratio of energy to time. The S.I unit of power is in watts.

Given that the flash lasts for 1/675 s, power output is 2.7 * 10⁵ W. Hence:

Power = Energy / time

Substituting:

2.7 * 10⁵ W = Energy / (1/675)

Energy = 2.7 * 10⁵ W * 1/675 = 400J

Therefore the energy emitted as light is 400J.

Since the conversion of electric energy to light is 95% efficient, hence the energy stored as electrical energy is:

Energy(capacitor) = 5% of 400J + 400J = 0.05*400 + 400

Energy(capacitor) = 420J

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3 years ago

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Answer: It represents the whole distance traveled. Hope this helps!

Explanation:

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