3 years ago

22= 1/2 9.8 t^2

1 answer:

6 0

Answer:

5790 i dony kiow

Explanation:

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solmaris [256]

The correct answer is B

4 0

3 years ago

Lynna [10]

For an ideal transformer power loss is assumed to be zero

i.e. the power in primary coil due to input voltage must be equal to power in secondary coil due to output voltage

this can be written in form of equation

$V_1 i_1 = V_2 i_2$

here we know that

$V_2 = 140 volts$

$i_2 = 3.5 A$

$i_1 = 10 A{/tex]now we will use above equation[tex]140*3.5 = 10 * V_1$

$V_1 = 49 volts$

So primary coil voltage is 49 Volts

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3 years ago

kari74 [83]

i’m pretty sure it’s , the alkali metals

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3 years ago

mixas84 [53]

Nothing happens to the mirror.

However, if the ray is within some suitable range of
wavelengths, the ray is reflected from the mirror's surface.

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3 years ago

Hunter-Best [27]

If it starts at rest the initial velocity is 0.
For an acceleration, a, and time, t, the velocity is v=at. Since at t=4, v=7, then a=7/4=1.75m/s^2

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3 years ago