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3 years ago

Does a light bulb at a temperature of 2500K produce as white a light as the sun at 6000K

Physics

1 answer:

sattari [20]3 years ago

7 0

Answer:

No. ... UV light causes sunburn, whereas visible light does not.

Explanation:

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The mass of a star is 1.61·1031 kg and its angular velocity is 1.60E-7 rad/s. Find its new angular velocity if the diameter sudd

Tcecarenko [31]

Answer:

ω₂ = 1.9025 x 10⁻⁶ rad/s

Explanation:

given,

mass of star = 1.61 x 10³¹ kg

angular velocity = 1.60 x 10⁻⁷ rad/s

diameter suddenly shrinks = 0.29 x present size

r₂ = 0.29 r₁

using conservation of angular momentum

I₁ ω₁ = I₂ ω₂

$(\dfrac{2}{5}mr_1^2)\omega_1=(\dfrac{2}{5}mr2^2)\omega_2$

$r_1^2\times \omega_1=r_2^2\times \omega_2$

$r_1^2\times 1.60\times 10^{-7}=(0.29r_1)^2\times \omega_2$

$1.60\times 10^{-7}=0.0841\times \omega_2$

$\omega_2=\dfrac{1.60\times 10^{-7}}{0.0841}$

ω₂ = 1.9025 x 10⁻⁶ rad/s

5 0

3 years ago

HELP ASAPPPPPPP !!!!!!!!!

Misha Larkins [42]

The answer is hydrogen

3 0

3 years ago

To view an enlarged upright image of an object through a simple magnifier, where must the object be located?.

Andre45 [30]

Answer:within the focal length of the lens, provided the focal length is shorter than the near point distance.

Explanation:Hope it helps

6 0

2 years ago

Jane and John Doppler effect

UkoKoshka [18]

Answer:

To summarize, Jane's star has a red light and is traveling towards the Earth while John's star has a blue light and is traveling away from the Earth. This is a prime example of the Doppler Effect in motion. The stars look different because they are traveling in different directions.

4 0

2 years ago

The hydrogen molecule will start to vibrate at temperatures above roughly 1000 K. At this high temperature, what is the ratio of

Elena L [17]

Answer:

Explanation:

At the temperature of 1000K , hydrogen will have following degree of freedom

translational = 3

rotational = 2

vibrational = 1

Total = 6

Internal energy = 6N x 1 /2 k T where N is no of molecules

E₁ = 3 N kT

At the temperature of 1000K , helium will have following degree of freedom

translational = 3

rotational = 0

vibrational = 0

Total = 3

Internal energy = 3N x 1 /2 k T where N is no of molecules

E₂ = 3 / 2 N kT

Ratio = E₁ / E₂

= 2

6 0

3 years ago