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Mkey [24]
3 years ago
9

The rate at which light energy is radiated from a source is measured in which of the following units?

Physics
1 answer:
romanna [79]3 years ago
8 0
Answer is Option C Lumen.It is also known as luminous energy. 
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Given 368172 hours, convert to days.
dezoksy [38]

Answer:

15340.5

Explanation:

368172/24 hours

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Which is an example of radiation?
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a light beam that hits a mirror at an angle of 36°... what is the Angle of Incidence? Angle of Reflection?​
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3 years ago
An object is thrown straight up with an initial velocity of 10 m/s, and there is an air resistance force causing an acceleration
lana [24]

Answer:

Vf= 7.29 m/s

Explanation:

Two force act on the object:

1) Gravity

2) Air resistance

Upward motion:

Initial velocity = Vi= 10 m/s

Final velocity = Vf= 0 m/s

Gravity acting downward =  g = -9.8 m/s²

Air resistance acting downward = a₁ = - 3 m/s²

Net acceleration = a = -(g + a₁ ) = - ( 9.8 + 3 ) = - 12.8 m/s²

( Acceleration is consider negative if it is in opposite direction of velocity )

Now

2as = Vf² - Vi²

⇒ 2 * (-12.8) *s = 0 - 10²

⇒-25.6 *s = -100

⇒ s = 100/ 25.6

⇒ s = 3.9 m

Downward motion:

Vi= 0 m/s

s = 3.9 m

Gravity acting downward =  g = 9.8 m/s²

Air resistance acting upward = a₁ = - 3 m/s²

Net acceleration = a = g - a₁  =  9.8 - 3  = 6.8 m/s²

Now

2as = Vf² - Vi²

⇒ 2 * 6.8 * 3.9 = Vf² - 0

⇒ Vf² = 53. 125

⇒ Vf= 7.29 m/s

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3 years ago
What is the difference between a 3 v and 12 v battery
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V=IR
The more V, the more I
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3 years ago
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