Lightning is an electric current. Within a thundercloud way up in the sky, many small bits of ice (frozen raindrops) bump into each other as they move around in the air. All of those collisions create an electric charge. After a while, the whole cloud fills up with electrical charger
Answer:
The actual output voltage produced is 4.8 V
Explanation:
given information:
R₁ = 4.7k Ω
R₂ = 10k Ω
V =15 V
nominal output = 5 V
actual output voltage produce :
V₀ = (R₁/(R₁+R₂))V
= (4.7/(4.7+10)) (15)
= (4.7/14.7) (15)
= 4.8 V
The atom's most outer shell is full.
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Answer:</h2>
3.0cm
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Explanation:</h2>
For lenses in an achromatic combination, the following condition holds, assuming the two lenses are of the same materials;
d = ---------(i)
Where;
d= distance between lenses
f₁ = focal length of the first lens
f₂ = focal length of the second lens
From the question;
f₁ = 4.5cm
f₂ = 1.5cm
Substitute these values into equation (i) as follows;
d =
d =
d = 3.0cm
Therefore, the distance between the two lenses is 3.0cm
Answer: 10kg
Explanation:
Given that:
Kinetic energy of puppy = 245J
Velocity of puppy = 7 m/s
mass of puppy = ?
Recall that kinetic energy is the energy possessed by a moving body. It is measured in joules, and depends on the mass and velocity of the moving body
i.e K.E = 1/2 x mass x (velocity)^2
245J = 1/2 x mass x (7 m/s)^2
245 = 0.5 x mass x 49
245 = 24.5 x mass
Mass = 245/24.5
Mass = 10kg
Thus, the mass of the puppy is 10kg