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1 year ago

Define a dipole. Hence, write the expression for calculating the electric moment of a dipole

Physics

1 answer:

Aleksandr-060686 [28]1 year ago

4 0

Answer:

Explanation:

An electric dipole is formed by two point charges +q and −q connected by a vector a. The electric dipole moment is defined as p = qa

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WILL GIVE BRAINLIEST AND 50 POINTS!

7nadin3 [17]

Answer:

1) Current decreases; 2) Inverse proportionally; 3) 1[A]

Explanation:

As we can see as the resistance increases the current decreases, if we take two points as an example, when the resistance is equal to 50 [ohms] the current is equal to 1[amp] and when the resistance is equal to 200 [ohms] the current tends to have a value below 0.5 [amp]. Thus demonstrating the decrease in current.

Inverse proportionally, by definition we know that the law of ohm determines the voltage according to resistance and amperage. This is the voltage will be equal to the product of the voltage by the resistance.

$V=I*R\\V = voltage [volts]\\I = current[amp]\\R = resistance [ohms]$

where:

$R =\frac{V}{I} \\or\\I=\frac{V}{R}$

And whenever we have in a fractional number the denominator the variable we are interested in, we can say that this is inversely proportional to the value we are interested in determining. In this case, we can see from the two previous expressions that both the current and the resistance appear in the denominator, therefore they are inversely proportional to each other.

If we place ourselves on the graph on the resistance axis, we see that at 50 [ohm] will correspond a current value equal to 1 [A].

4 0

3 years ago

Read 2 more answers

Arrange the step in order to describe what happens to a liquid when it is heated

solong [7]

Answer:

The liquid gains thermal energy. The particles of liquid move faster. The space between the liquid particles increases. The liquid changes to a gas

8 0

3 years ago

Calculate the cenrtripetal acceleration of the Earth in

miv72 [106K]

Answer:

$0.00594\ m/s^2\ \text{towards the Sun}$

$3.54737\times 10^{22}\ N$

Explanation:

r = Distance between Earth and Sun = $1.5\times 10^{11}\ m$

Time taken to complete one rotation around Sun is given by

$T=365.25\times 24\times 3600$

Centripetal acceleration is given by

$a=\dfrac{v^2}{r}\\\Rightarrow \\\Rightarrow a=\dfrac{(\dfrac{2\pi r}{T})^2}{r}\\\Rightarrow a=\dfrac{4\pi^2r}{T^2}\\\Rightarrow a=\dfrac{4\pi^2\times 1.5\times 10^{11}}{(365.25\times 24\times 3600)^2}\\\Rightarrow a=0.00594\ m/s^2\ \text{towards the Sun}$

The centripetal acceleration of the Earth in its orbit is $0.00594\ m/s^2\ \text{towards the Sun}$

Force is given by

$F=ma\\\Rightarrow F=5.972\times 10^{24}\times 0.00594\\\Rightarrow F=3.54737\times 10^{22}\ N$

The force on the Earth is $3.54737\times 10^{22}\ N$

4 0

3 years ago

Use what you know about mass and how you use it to calculate force in the following situation. If each washer has a mass of 4. 9

mina [271]

Considering the change of units and the definition of weight, the mass of two washers would be 0.0098 kg and if 4 washers are attached to the string, then the applied force on the car will be 0.196 N.

Mass of two washers

If each washer has a mass of 4.9 g, then the mass of two washers will be calculated simply by multiplying the mass of 1 washer by the amount you have of them, in this case 2:

4.9 g×2= 9.8 g

Being 1 kg = 1000 g, you apply the following rule of three to make the change of units: if 1000 g equals 1 kg, 9.8 g equals how many kilograms?

$mass=\frac{9.8 gramsx1 kg}{1000g}$

Solving:

mass= 0.0098 kg

Finally, the mass of two washers would be 0.0098 kg.

Applied force

On the other side, mass is the amount of matter that a body contains and weight is the action exerted by the force of gravity on the body.

The mass of an object will always be the same, no matter where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.

Weight is calculated as the product of the object's mass and the value of the gravitational acceleration:

W= m×g

In this case, you know:

m= 4.9 g×4= 19.6 g= 0.0196 kg → the mass of 4 washers in kilograms
g= 10 m/s²

Replacing:

W= 0.0196 kg× 10 m/s²

Solving:

W= 0.196 N

Finally, if 4 washers are attached to the string, then the applied force on the car will be 0.196 N.

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7 0

2 years ago

Read 2 more answers

A person on horseback moves according to the velocity-versus-time graph shown in the figure (attached) . . A. Find the displacem

Leya [2.2K]

From my research, the following image is used for the problem. For each segment, the displacement can be obtained by looking for the area under the segment.

Part A:

displacement = (1/2)*10*2 = 10m

Part B:

displacement = [(1/2)*4*5] + (5*2) = 20m

Part C:

displacement = [(1/2)*4*10] + (2*10) = 40m

4 0

3 years ago

Define a dipole. Hence, write the expression for calculating the electric moment of a dipole​

Define a dipole. Hence, write the expression for calculating the electric moment of a dipole