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agasfer [191]
2 years ago
12

There is a 120 V circuit in a house that is a dedicated line for the dishwasher, meaning the dishwasher is the only resistor on

that circuit line. If the dishwasher draws 18 A of electricity, what would the resistance of the dishwasher be? Round the answer to the nearest hundredth of an ohm.
Physics
2 answers:
aliya0001 [1]2 years ago
7 0

The info given in the question:

Voltage= 120V

Current=18A

Now we have to find the resistance. To find it use the following formula:

V=IR

Now making R to be the subject of the formula

R=V/I

R=120/18

The answer is 6.67 ohms

As dishwasher is the only resistor in the line the voltage drop is going to be 120V. The resistance values determines the hindrance that is present in the circuit that opposes the free flowing electrons  

Papessa [141]2 years ago
7 0

Answer : The resistance of the dishwasher is R=6.67\ A.

Explanation :

It is given that in a house there is only one resistor on the circuit line. There is a 120 V circuit in a house that is a dedicated line for the dishwasher. The dishwasher draws the current of 18 A of electricity.

Using Ohm's law in this circuit such that, V = I R

Where R is the resistance offered to the circuit.

So, using V and I in the equation of Ohm's law we get :

R=\dfrac{V}{I}

R=6.67\ A

Hence, this is the required solution.

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A ship sends out a 1200 Hz sound wave, which has a wavelength of 120 cm in the water. What would happen if that ship sent out a
OlgaM077 [116]

Answer:

the wave length becomes doubled or becomes two times the initial wavelength = 240 cm

Explanation:

From wave,

v = λf................ Equation 1

Where v = velocity of the wave, λ = wavelength of the wave, f = frequency of the wave.

Given: f = 1200 Hz, λ = 120 cm = 1.2 m

Substitute into equation 1

v = 1200(1.2)

v = 1440 m/s.

When the ship sent out a 600 Hz sound wave,

make λ the subject of formula in equation 1

λ = v/f............. Equation 2

Given: f = 600 Hz, v = 1440 m/s

Substitute into equation 2

λ = 1440/600

λ = 2.4 m or 240 cm.

When the ship sent out a 600 Hz sound wave instead, the wave length becomes doubled or becomes two times the initial wavelength = 240 cm

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6) A map in a ship’s log gives directions to the location of a buried treasure. The starting location is an old oak tree. Accord
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astraxan [27]

Answer:

56400Joules

Explanation:

The quantity of heat required is expressed as;

Q = mL

m is the mass = 25g = 0.025kg

L is the latent heat of vaporization for steam = 2.256×10^6J/kg

Substitute into the formula as shown;

Q = 0.025×2.256×10^6

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The total negative charge on the electrons in 1kg of helium (atomic number 2, molar mass 4) is____________.
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Answer:

Explanation:

n = \frac{m}{M}

n = \frac{1000}{4}

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        = 1.505×10^{26}

Total charge = (1.505×10^{26}) × (1.6×10^{-19})

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To practice Problem-Solving Strategy 15.1 Mechanical Waves. Waves on a string are described by the following general equation y(
NeX [460]

Answer:

The transverse displacement is   y(1.51 , 0.150) = 0.055 m    

Explanation:

 From the question we are told that

     The generally equation for the mechanical wave is

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Substituting values  

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The propagation constant k is mathematically represented as

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Substituting values

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Substituting values into the equation for mechanical waves

      y(1.51 , 0.150) = (5.50*10^{-2} ) cos ((11.64 * 1.151 ) - (96.03  * 0.150))

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