Physics, 28.08.2019 21:40 gabby7398

When energy is changed from one form to another, some of the energy is lost to the surroundings as waste thermal energy. the more steps needed to arrive at the desired energy or the more types of energy that are generated, the more energy is wasted.
which object would likely have the least amount of wasted energy?
a) an electric drill
b) a solar cell
c) a car engine
d) a hydroelectric dam

Answers: 2

Show answers

Answers

Answer from: msdrake79

The answer is B Solar cell just took the test

Answer from: legendman27

The correct answer is solar cell.

Explanation:

When energy is changed from one form to another, some of the energy is lost to the surroundings as waste thermal energy.

From the given options,

Electric drill: Electric drill converts the electrical energy into mechanical energy. When the drill break the the object then the mechanical energy is converted into the heat energy.

Car engine: Car engine converts the chemical energy into the thermal energy. This thermal energy gets converted into the mechanical energy. Then, this mechanical energy is used to accelerate the vehicle.

Hydroelectric dam: Here, the potential energy stored in the water at some height is converted into mechanical energy. Then, this mechanical energy is converted into the kinetic energy. Then, finally, this kinetic energy is converted into electrical energy.

In above options, there is a dissipation of energy while one form of energy gets converted into another.

The more steps needed to arrive at the desired energy or the more types of energy that are generated, the more energy is wasted.

Solar cell: The solar cell converts the solar energy into electrical energy.

Therefore, a solar cell have the least amount of wasted energy.

Answer from: Quest

cell differentiation is how generic embryonic cells become specialized cells. this occurs through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions.

explanation:

Answer from: Quest

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

Another question on Physics

Physics, 22.06.2019 01:30

In a thunderstorm, charge builds up on the water droplets or ice crystals in a cloud. thus, the charge can be considered to be distributed uniformly throughout the cloud. for the purposes of this problem, take the cloud to be a sphere of diameter 1.00 kilometer. the point of this problem is to estimate the maximum amount of charge that this cloud can contain, assuming that the charge builds up until the electric field at the surface of the cloud reaches the value at which the surrounding air breaks down. this breakdown means that the air becomes highly ionized, enabling it to conduct the charge from the cloud to the ground or another nearby cloud. the ionized air will then emit light due to the recombination of the electrons and atoms to form excited molecules that radiate light. in addition, the large current will heat up the air, resulting in its rapid expansion. these two phenomena account for the appearance of lightning and the sound of thunder. take the breakdown electric field of air to be eb=3.00ă—106n/c. part a estimate the total charge q on the cloud when the breakdown of the surrounding air is reached. express your answer numerically, to three significant figures, using ďµ0=8.85ă—10â’12c2/(nâ‹…m2) .

Answers: 2

Answer

Physics, 22.06.2019 21:30

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d

Answers: 2

Answer

Physics, 23.06.2019 00:40

Aforce of 8,480 n is applied to a chart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?

Answers: 1

Answer

Physics, 23.06.2019 02:00

Does the asteroid belt revolve around the sun?

Answers: 2

Answer

You know the right answer?

When energy is changed from one form to another, some of the energy is lost to the surroundings as w...