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dimulka [17.4K]
3 years ago
6

Red light has a shorter wavelength than yellow light.

Physics
1 answer:
earnstyle [38]3 years ago
5 0

Answer: The above statement is FALSE

Explanation: According to the electromagnetic spectrum, Red light has the highest wavelength but low frequency and energy in comparison to a Yellow light. Red light has as frequency of about 640-700 nm, whereas Yellow light has a wavelength of about 530-600 nm.

But in case of Yellow light, it has low wavelength, but high frequency and high energy.

The wavelength is inversely proportional to its frequency, but frequency and energy are directly proportional to each other.

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A skateboarder is moving 5.25 m/s when he starts to roll up a frictionless hill. How much higher is he when his velocity has red
Taya2010 [7]
Mechanical energy E = mgh + 1/2mv²

When he starts, let h = 0 ⇒ E₁ = 1/2mv₁²
When he reaches height h ⇒ E₂ = mgh + 1/2mv₂²

Without friction, energy is conserved at all times.

E₁ = E₂
     ↓
1/2mv₁² = mgh + 1/2mv₂²
     ↓
1/2v₁² = gh + 1/2v₂²
     ↓
gh = 1/2(v₁² - v₂²)
    ↓
h = (v₁² - v₂²) / (2g)


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What best explain the cirulation system within mammals
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The circulation system for mammals is very complex
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Define liquid pressure​
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The pressure of a liquid on the surface of its container or on the surface of any body in the liquid is equal to the weight of a column of the liquid whose height equals the depth of the liquid at that certain point.

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vector J is 3250m long in a 38.4 direction. Vector K is 1822 m long in a 58.8 direction. Find the magnitude and direction of the
garik1379 [7]

Answer:

The resultant vector has a magnitude of 4998 m and a direction of 45.7°.

Explanation:

The x component of the resultant vector is the sum of the x components of each individual vector.

x = 3250 cos 38.4 + 1822 cos 58.8

x = 3490.8

Similarly, the y component of the resultant vector is the sum of the y components of each individual vector.

y = 3250 sin 38.4 + 1822 sin 58.8

y = 3577.2

The magnitude can be found with Pythagorean theorem:

√(x² + y²)

√(3490.8² + 3577.2²)

4998

The direction can be found with trigonometry:

atan(y / x)

atan(3577.2 / 3490.8)

45.7°

The resultant vector has a magnitude of 4998 m and a direction of 45.7°.

3 0
3 years ago
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