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zaharov [31]
4 years ago
6

How many kilograms of water can completely fill a

Physics
1 answer:
lara31 [8.8K]4 years ago
7 0

To solve this problem we will apply the concept related to density, which is defined as a scalar magnitude referred to the amount of mass in a given volume of a substance or a solid object. Mathematically it is expressed as

\rho = \frac{m}{V}

Here,

m = mass

V = Volume

The volume of a rectangular box will be

V = 10*5*2

V = 100cm^3 = 1*10^{-4}m^3

Water density is given under normal conditions such as 1000kg / m ^ 3

Therefore using the above formula and clearing for the dough we will have to

m = \rho V

m = (1000kg/m^3)(1*10^{-4}m^3)

m = 0.1Kg

Therefore there are 0.1Kg of water.

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Three resistors of equal resistance are connected in series as shown. Compared to the voltage provided by the battery, voltage a
dsp73

Answer:

the voltage across each resistor is one third of the battery voltage

Explanation:

In a series circuit, the current is constant throughout the circuit, so the battery voltage is equal to the sum of the voltage drop in each part of the series circuit.

        V = i (R₁ + R₂ + R₃)

       

in the exercise indicate that all resistance has the same value

         R₀ = R₁ = R₂ = R₃

        V = i 3 R₀

        V = 3 V₀

         V₀ = i R₀

          V₀= V / 3

the voltage across each resistor is one third of the battery voltage

6 0
3 years ago
A system does 506 kj of work, and loses 266 kj of heat to the surroundings. what is the change in internal energy of the system?
babunello [35]

Answer:

The change in internal energy of the system = -772kJ

Explanation:

Given :

Heat lost by the system , a = -266KJ

Workdone by the system, W = -506KJ

The first law of thermodynamics states that:

Change in internal energy = q + w

Substituting values into the equation

Change in internal energy = (-266KJ) + (-506KJ)

Change in internal energy = -722KJ

7 0
3 years ago
Read 2 more answers
Is the refraction different entering medium that has a higher index of refraction compared to entering amedium that has a lower
oee [108]

Answer:

Yes

Explanation:

The speed of light when it travels through glass, diamond, etc, the light travels at different speed from the speed of light. Speed of the light in material is related to the index of refraction.

The change in speed which occurs when the light passes from one medium to the another is responsible for bending of the light which is called as refraction.

<u>When the light goes into a medium with the higher index of the refraction, light bends towards normal. Conversely, if the light traveling goes from higher refractive index to lower refractive index, it will bend away from the normal. </u>

<u>Hence, the refraction is different in both the scenario.</u>

6 0
3 years ago
A helix with 17 turns has height H and radius R. Charge is distributed on the helix so that the charge density increases like (i
marishachu [46]

The total charge on the helix is

  • Q = \frac{221}{2}\sqrt{(\frac{H}{17})^2+(2\piR)^2

Height of one turn = \frac{H}{n}

Horizontal distance in one turn = 2\pi R

<h3>length of spring in one turn is</h3>

l = \sqrt{h^2+(2\piR)^2}\\\\&#10;l = \sqrt{(\frac{H}{n})^2+(2\piR)^2}&#10;

So, the total length of spring

L = n*l\\\\&#10;L = n * \sqrt{(\frac{H}{n})^2+(2\piR)^2}&#10;

Therefore, charge on spring

Q = \frac{1}{2}*L*(13-0)\\\\&#10;Q = \frac{1}{2}*n\sqrt{(\frac{H}{n})^2+(2\piR)^2}*13\\\\&#10;Q = \frac{1}{2}*17*13\sqrt{(\frac{H}{17})^2+(2\piR)^2}\\\\&#10;Q = \frac{221}{2}\sqrt{(\frac{H}{17})^2+(2\piR)^2\\\\&#10;

For more information on linear charge density, visit

brainly.com/question/15359786

8 0
2 years ago
A 750 watt hairdryer is used for 60 seconds. how many joules of energy are used?
daser333 [38]
We know, Power = Energy / time
Here, P = 750 Watt
t = 60 sec

Substitute their values, 
750 = E / 60
E = 750 * 60
E = 45,000 J

In short, Your Answer would be 45,000 Joules

Hope this helps!
4 0
4 years ago
Read 2 more answers
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