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3 years ago

8

A potentiometer wire of length 1m and resistance 2Ω is connected in series with a variable resistance and 2V accumulator of negl

igible resistance. What must be the variable resistance so that the fall of electric potential across the wire is 1mV/cm?

1 answer:

cluponka [151]3 years ago

5 0

Answer:

wire

Explanation:

we need insulator to conduct the experiment

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A basketball referee tosses the ball straight up for the starting tip-off. At what velocity (in m/s) must a basket ball player l

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Explanation:

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3 years ago

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3 years ago

Read 2 more answers

A swimming pool measures 5.0 m long x 4.0 m wide x 3.0 mdeep.

QveST [7]

Answer:

a) 588,000 N

b) 294000 N

Explanation:

Given that

Density of water = 1000kg/m3

(g) = 9.8m/s2

volume is given as (V)= 5m*4m*3m

a) force will be equal to weight of water

$W = mg = \rho g V = 1000\times 9.8 \times (5*4*3) = 588,000 kg m/s^2$

b) at either end

$P = \frac{F}{A} = P_o + \rho gh$

$dF = PdA$

$dF = \rho g w \int h dh$

$F = \rho g w \frac{h^2}{2}$

$F = \rho g A \frac{h}{2}$ [A = wh]

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3 0

3 years ago

Can someone help me?!!!!!

SOVA2 [1]

Answer:magnitude -5; angle 160°

Explanation:

Vector A is described as having magnitude 5 and angle -20°.

To get an equivalent vector, we either leave the magnitude at 5 and add 360° to the angle, or we reverse the magnitude to -5 and add 180° to the angle.

5 @ -20° = 5 @ 340°

5 @ -20° = -5 @ 160°

The third one is the answer.

8 0

3 years ago