3 years ago

What is the voltage of a circuit when 5C of charge flows with a 7V EMF?

Physics

1 answer:

GuDViN [60]3 years ago

5 0

You just said that the EMF across the circuit is 7V. So the voltage is 7 volts.

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Anna11 [10]

Answer:

4m/s²

Explanation:

Initial velocity (u) = 0 m/s

Final velocity (v) = 8 m/s

Time taken (t) = 2 sec

Acceleration (a) = ?

We know

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3 years ago

A low C (f = 65Hz) is sounded on a piano. If the length of the piano wire is 2.0 m and its mass density is 5.0 g/m2, determine t

Pie

Answer:

338N

Explanation:

Use the formula $f=\frac{\sqrt{\frac{T}{\frac{M}{L}} } }{2L}$

f is the frequency, T the string tension, M the mass, and L the length

convert units to seconds, kilograms, meters

$65Hz\ =\ \frac{\sqrt{\frac{T}{\frac{0.005kg}{m}}}}{2\cdot2m}$

now solve for T

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3 years ago

A tin can is partially filled with water and heated so that the water boils for some time. Explain what happens to the can when

kozerog [31]

It gets smaller and lower in the tin can

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3 years ago

A spring with a spring constant of k = 185.0 N / m is oriented vertically, with one end on the ground. What distance does the sp

uysha [10]

Answer:

The distance spring compresses (x) = 0.0811 m

Explanation:

Spring constant (k) = 185 N / m

mass (m) = 1.53 kg

When mass is placed upon the spring the spring force is equal to weight of the mass.

⇒ Spring force (F) = weight of object

⇒ Spring force (F) = k × x

And weight of the object = mg

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3 years ago

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Answer:

1.9

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Efficiency=mechanical advantage/velocity ratio×100

95=M.A/2×100

95=50M.A

M.A=95/50=1.9

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3 years ago