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ANEK [815]
3 years ago
5

What is the power of a diverging lens of focal length 0.4 m

Physics
1 answer:
romanna [79]3 years ago
4 0

Answer:

-2.5 is the answer to your question

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A car moving with an initial speed v collides with a second stationary car that is one-half as massive. After the collision the
Mashutka [201]

Answer:

4v/3

Explanation:

Assume elastic collision by the law of momentum conservation:

m_1v = m_1v_1 + m_2v_2

where v is the original speed of car 1, v1 is the final speed of car 1 and v2 is final speed of car 2. m1 and m2 are masses of car 1 and car 2, respectively

Substitute m_2 = m_1/2 \& v_1 = v/3

m_1v = \frac{m_1v}{3} + \frac{m_1v_2}{2}

Divide both side by m_1, then multiply by 6 we have

6v = 2v + 3v_2

3v_2 = 4v

v_2 = \frac{4v}{3}

So the final speed of the second car is 4/3 of the first car original speed

5 0
3 years ago
We know velocity of sound v=a₩(omega), but speed does not depend on amplitude, why?
MrRissso [65]
Hope it helps............

8 0
3 years ago
S A voltage ΔV is applied to a series configuration of n resistors, each of resistance R. The circuit components are reconnected
Flura [38]

The power of is series combination is Vn^2 times that of a parallel combination.

For series combination :

Req = R + R + R + ............... n times = nR

I = Δv/nr

Power = (Δv/nr)^2 × nr = Δv^2/nr

For parallel combination

1/req = 1/R + 1/R + 1/R +................(n times) = n/R

Req = R/n

Power = Δv/(R/n) = nΔv^2/R

Ratio = Δv^2/nr/n·Δv^2/R = 1/n^2

Hence, power of is series combination is Vn^2 times that of a parallel.

Learn more about parallel combination here:

brainly.com/question/12400458

#SPJ4

3 0
2 years ago
3. When two things are the same temperature:
JulijaS [17]
The answer is definitely C.) their molecules move at the same average speed
3 0
3 years ago
Which waves require a material medium for transmission? a.) light waves b.) radio waves c.) sound waves d.) microwaves
shepuryov [24]

Answer:

mechanical waves require a medium

5 0
3 years ago
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