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3 years ago

HEY CAN ANYONE PLS PLS ANSWER DIS I RLY NEED IT

1 answer:

jeka943 years ago

8 0

Place the object in an electronic balance and measure its mass.
Place a measured amount of water in the cylinder.
Place the object in the cylinder so that it’s fully submerged.
Measure the new level of the liquid and subtract the original level. This is equal to the volume of the object.

Density = mass / volume.

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In the picture below, the candle is heating the water in the tank. Which picture shows how the water will move as it gets hot?

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2 years ago

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What is true of electrolytic cells but is not true of galvanic cells?

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3 years ago

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The conducting path between the right hand and the left hand can be modeled as a 9.0-cm-diameter, 140-cm-long cylinder. The aver

Crank

Answer:

The potential difference is 121.069 V

Solution:

As per the question:

Diameter of the cylinder, d = 9.0 cm = 0.09 m

Length of the cylinder, l = 40 cm = 1.4 m

Average Resistivity, $\rho = 5.5\ \Omega-m$

Current, I = 100 mA = 0.1 A

Now,

To calculate the potential difference between the hands:

Cross- sectional Area of the Cylinder, A = $\pi (\frac{d}{2})^{2} = 6.36\times 10^{- 3}\ m^{2}$

Resistivity is given by:

$\rho = R\frac{A}{l}$

$R = \rho \frac{l}{A}$

$R = 5.5\times \frac{1.4}{6.36\times 10^{- 3}} = 1210.69\ \Omega$

Now, using Ohm's Law:

V = IR

$V = 0.1\times 1210.69 = 121.069\ V$

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3 years ago

Which type of radiation travels at the speed of light and penetrates matter easily?

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What is the definition of speed and the formula for calculation?

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HOPE IT HELPS YOU

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2 years ago