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3 years ago

A (Blank) supplies energy to move electricity through a circuit

Physics

1 answer:

Pepsi [2]3 years ago

8 0

That's a battery or other "power supply".

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When two objects collide their momentum after the collision is explained by what?

Gnesinka [82]

<span>When two objects collide their momentum after the collision is explained by</span> the conservation of momentum

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3 years ago

Frequency of the wave below?

agasfer [191]

It's hard to tell exactly what's happening in that 110 cm that you marked over the wave. What is under the ends of the long arrow ? How many complete waves ? I counted 4.5 complete waves ... maybe ?

If there are 4.5 complete waves in 110cm, then the length of 1 wave is (110/4.5)=24.44cm.

Frequency = speed/wavelength

Frequency = 2m/s /0.2444m

Frequency = 8.18 Hz

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3 years ago

An atom with 9 protons, 11 electrons, and 10 neutrons has a net charge of

LiRa [457]

You find net charge by subtracting the number of electrons from the number of protons (since protons are positive and electrons are negative). 9 - 10 = -1

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3 years ago

Why is 30% recommended as the minimum Michelson contrast?

forsale [732]

Answer:

Explained

Explanation:

Michelson contrast is used for patterns where the distribution of bright and dark segments is nearly equal.

It is given by:

$m= \frac{I_{max}-I{min}}{I_{max}+I{min} }$

where I_max = maximum illumination and I_min = minimum illumination

we know that

typically, I_min = 54% of I_max (general standard)

or I_min = 0.54 I_max

putting this value in above equation to get m

this approximately corresponds to m = 0.3 or 30%

hence, 30% recommended as the minimum Michelson contrast

6 0

3 years ago

Please help me im struggling

Nastasia [14]

Answer:

right

Explanation:

4 0

3 years ago