A 60 W light bulb at 120 V is left on in your house to prevent burglary, and the power charges 10 cents per kilowatt-hour, how much will it cost to leave the bulb on for 30 days?
Answers
4.22 dollars is the cost to leave the bulb on for 30 days.
What is electrical energy?
Electrical energy is the power an atom's charged particles have to cause an action or move an object. The movement of electrons from one atom to another is what results in electrical energy.
There is a dissipation of electrical energy in the resistor when an electric current flows through it. It depends on the resistance of the resistor and the applied voltage.
The expression of the power dissipation is as follows ;
P=
V is the applied voltage.
R is the resistance.
Given
P = 60 W
30days * 24h/day = 720 Hours kW * h
Therefore by putting the values in the given formula,
= (60/1000)kW * 720h
= 43.2 kWh
Hence,
The cost is 42.2 kWh42.2 kWh x 0.1
= 4.22 dollars
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Related Questions
Why is Gregor Mendel's research the field of genetics
Heat of Fusion How much thermal energy is needed change 50.0 g of ice at -20.0°C to water at 10.0°C?
Which particle is used as a beam to treat cancer?
Forces that are equal in size but opposite in direction are ____.
B. It is organic
C. Its structure is crystal
D. Its a liquid, solid, or gas
Answers
Answer:c-its structure is crystal
Explanation:
A substance is called a mineral if it meets the following requirement
naturally occurring,
inorganic,
solid,
definite chemical composition,
ordered internal structure
So the definite answer is crystal structure because they have an ordered internal structure.
Hope it helps
Final answer:
A mineral is a naturally occurring, inorganic, solid substance with a specific chemical composition and a crystalline structure. Hardness may vary among minerals and they are not organic. They are solid under normal conditions on Earth.
Explanation:
A mineral is defined by several specific characteristics: it is naturally occurring, inorganic, solid, has a definite chemical composition, and has a ordered internal arrangement of atoms - structure typically crystalline in nature.
- It is hard: Not all minerals are hard. The hardness of a mineral is determined by the Mohs scale. So, hardness is a characteristic but not a definition.
- It is organic: This statement is untrue. Minerals are inorganic substances.
- Its structure is crystal: This is true. Minerals have a crystalline structure due to the orderly, repeating pattern of their atoms.
- It's a liquid, solid, or gas: This is partly correct. Minerals are solids under normal conditions on Earth.
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Answers
Final answer:
An unbalanced force occurs when the forces acting on an object are not equal and opposite, causing a change in the object's motion. This is dictated by Newton's second law of motion. When forces are balanced, the object remains at rest or continues its motion unchanged.
Explanation:
An unbalancedforce refers to a scenario in which the forces acting on an object are not equal in magnitude and direction, causing a change in the motion of the object. In accordance with Newton's second law of motion, the motion change is directly proportional to the total unbalanced force and occurs in the direction of that force. Exceptionally, if the forces acting on an object are balanced, the object will either stay at rest or continue moving with a constant velocity, since the net force equals zero.
Consider this simple example to illustrate the principle. If you push a table to the right with a force of 10 Newtons and nothing pushes back with an identical force, the unbalanced force causes the table to move to the right. This is because there is an unbalanced force exerted upon it. Conversely, if an equal force of 10 Newtons is applied to the table from the opposite direction, these forces are balanced, and the table remains stationary because the net force is zero.
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Answers
Answer:
C. small bodies and long limbs in warm-blooded organisms, light colored fur or feathers to reflect sunlight, lack of sweat glands in many organisms, hibernation during hot months
Explanation:
a. The clay is less dense when stretched into the shape of a boat.
b. The buoyant force is greater on the clay when it has a spherical shape.
c. The boat shape displaces a greater volume of water than the ball shape.
d. The weight of the clay boat is less than the weight of the clay ball.
Answers
In such situations, the point that we should take as a basis to resolve a question is weight. If the weight of clay is less than that of a clay ball, the clay will float.
Answer:
c. The boat shape displaces a greater volume of water than the ball shape.
Explanation:
B. a prism.
C. a lens.
D. an analyzer.
Answers
This is because the term "angle of deviation" is used to describe the angle at which the light bends compared to the normal of the ray of light
B) c + 100 km/h
C) c – 100 km/h
D) depends on the temperature, but faster than the speed if the truck was not moving.
E) faster than if the truck was not moving, but impossible to calculate with the given information
Answers
Answer:
A) c
Explanation:
Speed of light is always constant irrespective of the wave source's motion and the observer's inertial frame of reference. So, no matter how fast the car is moving the speed of light will always be constant. The speed of light in air is around 299704644.54 m/s. The meter is also defined by the speed of light as 1 meter is the distance travelled by light in 1/299792458 second.