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Sati [7]
3 years ago
5

The burners on this electric stove provide _________ to the flow of electric current and electricity is then converted into ____

_____ energy.
A) resistance; heat
B) a pathway; conductive
C) resistance; mechanical
D) a pathway; electromagnetic
Physics
2 answers:
frez [133]3 years ago
6 0

A is actually the correct answer i just took the test The coiled burners on this electric stove provide resistance to the flow of electric current and electricity is converted into heat energy.

patriot [66]3 years ago
6 0

Answer: The correct option is A.

Explanation:

The electric stove converts electrical energy into heat energy. The electrical energy travels through the medium. It allows the electrons to flow.

Some substance allows electrons to flow more easily while other substance gives more resistance to the flow of electrons.

The heating element in the electric stove is made up of alloy. This alloy is nichrome. It offers resistance to the flow of electrons. Heat is directly proportional to the resistance. Then, it leads to convert the electrical energy into heat energy.

Therefore, the burners on this electric stove provide resistance to the flow of electric current and electricity is then converted into heat energy.

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A road sign says "Tucson, Arizona - 120 miles." How many kilometers is this?
Irina-Kira [14]
Slightly less than 200 (193)
3 0
2 years ago
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Calculate the wavelength of a photon having 3.26 x 10^-19 joules of energy
bekas [8.4K]
The energy of a photon is given by:
E=hf
where h is the Planck constant and f is the photon frequency.
We know the energy of the photon, E=3.26 \cdot 10^{-19} J, so we can rearrange the equation to calculate the frequency of the photon:
f= \frac{E}{h}= \frac{3.26 \cdot 10^{-19}J}{6.6 \cdot 10^{-34}Js}=4.94 \cdot 10^{14}Hz

And now we can use the following relationship between frequency f, wavelength \lambda and speed of light c to find the wavelength of the photon:
\lambda= \frac{c}{f}= \frac{3 \cdot 10^8 m/s}{4.94 \cdot 10^{14} Hz}=6.07\cdot 10^{-7} m=607 nm
8 0
2 years ago
An inductor in an LC circuit has a maximum current of 2.4 A and a maximum energy of 56 mJ.
Harrizon [31]

Answer:

The energy stored in the capacitor, when the current in the inductor is 1.2 A, is 41.6 mJ.

Explanation:

In a LC oscillating circuit, the energy is stored in the electric field (between the plates of the capacitor) and in the magnetic field (surrounding the wires of the inductor).

At any time, the sum of both energies can be expressed as follows:

E = 1/2 Q² / C   +  1/2 L I²

In this type of circuit, energy oscillates, which means that it is exchanging between both fields all time.

When the capacitor is completely discharged, all the energy is stored in the magnetic field, and at that time, the current is maximum.

The total energy, when I is maximum, can be written as follows:

E = 1/2 L I² (1)

In our case, when I= 2.4A, E= 56 mJ.

So, we can find out the value of L, which will allow us to know the value of the magnetic energy at any time, having the value of the instantaneous current.

Solving for L in (1):

L = 2 *.56 mJ / (2.4)² A² = 20 mH

The next step is getting the value of the energy stored in the inductor, when I = 1.2 A, as follows:

Em = 1/2 *20 mH.* (1.2)² A² = 14.4 mJ

As the total energy must be always the same, i.e., 56 mJ, the energy stored in the capacitor, assuming no losses, must be the difference between the total energy and the one stored in the magnetic field:

Ec = 56 mJ - 14.4 mJ = 41.6 mJ

3 0
3 years ago
An eight-turn coil encloses an elliptical area having a major axis of 40.0 cm and a minor axis of 30.0 cm. The coil lies in the
Darina [25.2K]

Answer:

9.25 x 10^-4 Nm

Explanation:

number of turns, N = 8

major axis = 40 cm

semi major axis, a = 20 cm = 0.2 m

minor axis = 30 cm

semi minor axis, b = 15 cm = 0.15 m

current, i = 6.2 A

Magnetic field, B = 1.98 x 10^-4 T

Angle between the normal and the magnetic field is 90°.

Torque is given by

τ = N i A B SinФ

Where, A be the area of the coil.

Area of ellipse, A = π ab = 3.14 x 0.20 x 0.15 = 0.0942 m²

τ = 8 x 6.20 x 0.0942 x 1.98 x 10^-4 x Sin 90°

τ = 9.25 x 10^-4 Nm

thus, the torque is 9.25 x 10^-4 Nm.

5 0
3 years ago
What are two benefits of scientists using a diagram to model the water cycle?
Sidana [21]

Explanation:

it can be used to show how the parts of the cycle relate to one another

8 0
2 years ago
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