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jasenka [17]
3 years ago
7

Jane puts some water into an electric kettle and then she connects it to the power source. She observes that after some time the

water inside the kettle heats up and begins to boil. What is happening? A) Light energy is transforming into heat. Eliminate B) Heat energy is transforming into electricity. C) Electrical energy is transforming into heat energy. D) Electrical energy is transforming into light and heat energy.
Physics
2 answers:
Elodia [21]3 years ago
5 0

Answer: The correct answer is option C.

Explanation:

Electrical energy is an energy possessed by the electrical charges in motion.

Heat energy is an energy due to the motion of particles like atoms, ions etc in solid , liquid and gases .

In an electric kettle:

Electric energy → Heat energy   (Law of conservation Energy)

In an electric kettle electric energy is changing into heat energy which results in heating up of water present in side it.The electric energy from the power source is transforming into heat energy which gets transferred to water molecules.

Hence, the correct answer is option C.

Setler [38]3 years ago
4 0
C) electrical energy is transformed into heat energy
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Whats the force of gravitation of a 10kg rock and 100kg boulder which are 5 meters apart​
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Answer:

F = 2.6692 x 10⁻⁹ N

Explanation:

Given,

The mass of the rock, m = 10 kg

The mass of the boulder, M = 100 kg

The distance between them, d = 5 m

The gravitational force between the two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them. It is given by the formula

                                   <em> F = GMm/d²  newton</em>

Where,

                                 G - Universal gravitational constant

Substituting the given values,

                                 F = 6.673 x 10⁻¹¹ x 100 x 10 / 5²

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Hence, the force between the two bodies is, F = 2.6692 X 10⁻⁹ N

6 0
3 years ago
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

4 0
3 years ago
At a distance r from a charge e on a particle of mass m the electric field value is
mel-nik [20]

At a distance r from a charge e on a particle of mass m the electric field value is  8.9876 × 10⁹ N·m²/C². Divide the magnitude of the charge by the square of the distance of the charge from the point. Multiply the value from step 1 with Coulomb's constant.

<h3>what is magnitude ?</h3>

Magnitude can be defined as the maximum extent of size and the direction of an object.

It is used as a common factor in vector and scalar quantities, as we know scalar quantities are those quantities that have magnitude only and vector quantities are those quantities have both magnitude and direction.

There are different ways where magnitude is used Magnitude of earthquake,  charge on an electron, force, displacement, Magnitude of gravitational force

For more details regarding magnitude, visit

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7 0
1 year ago
Medical x-rays, with a wavelength of about 10^(-10) m, can penetrate completely through your skin.
natulia [17]
Wavelength of X-rays = 10⁻¹⁰ m
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4 0
2 years ago
Dean Potter is known for slacklinging across a 915 metter deep ravine in Yosemite National Park with no safety gear. If his mass
Natasha2012 [34]

Explanation:

answer 689910

M x G x H

mass = 77

G= 9.8

Meter = 915 this is the height

77 x 9.8= 754.6

754.6 X 915 = 689910 J

8 0
3 years ago
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