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Ierofanga [76]
3 years ago
14

6

Physics
1 answer:
Arturiano [62]3 years ago
4 0

Explanation:

A light bulb changes electrical energy into <em>heat energy and light energy .</em>

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You pull a rope to the left with 300 N and a friend pulls the rope to the right with 425 N
eimsori [14]
I’m assuming you’re supposed to calculate the resultant force?

425N (right) -300N (left)
=125 N to the right
6 0
3 years ago
A sphere 5 cm in diameter has a small scratch on its surface. When the scratch is viewed through the glass from a position direc
Molodets [167]

Answer

given,

diameter of sphere = 5 cm

radius of sphere = -2.5 cm

refractive index for glass n₁ = 1.5

refractive index for air n₂ = 1

magnification of the glass = ?

now,

\dfrac{n_1}{S} +\dfrac{n_2}{S'}= \dfrac{n_2-n_1}{R}

\dfrac{1.5}{5} +\dfrac{1}{S'}= \dfrac{1-1.5}{-2.5}

\dfrac{1.5}{5} +\dfrac{1}{S'}= \dfrac{0.5}{-2.5}

                  S' = - 10 cm

magnification

 m = \dfrac{-n_1S'}{n_2S}

 m = \dfrac{-1.5\times -10}{1\times 5}

 m = + 3

3 0
4 years ago
Sound waves move through some liquid at a speed of 1500 m/s. If the wavelength is 3 m, what is the frequency of the wave?
Orlov [11]

Answer:500hz

Explanation:

Frequency=velocity/wavelength

Frequency=1500/3

Frequency=500hz

4 0
3 years ago
What statement applies to the horizontal rows or periods in the periodic table? A. The properties are all the same. B. The eleme
Sliva [168]
The right answer for the question that is being asked and shown above is that: "C. <span>. The properties change going across each row. " the </span>statement that applies to the horizontal rows or periods in the periodic table is that t<span>he properties change going across each row. </span>
7 0
3 years ago
If you take 3s to do 72J of work, how much power did you exert?
Svetradugi [14.3K]

Answer:

The answer to your question is Power = 24 Watts

Explanation:

Data

time = 3 s

Work = 72 J

Power = ?

Power is defined as the rate at which a work is done.

Formula

Power = Work / time

-Substitution

Power = 72/3

-Simplification

Power = 24 Watts

-Conclusion

The Power exerts by 72 J of work in 3 seconds is 24 watts.

7 0
3 years ago
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