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Xelga [282]
3 years ago
13

NEED HELP QUICK PLZ! 51 Points!

Physics
2 answers:
Vesnalui [34]3 years ago
6 0
Mechanical waves transfer energy by inducing vibrations in the propagation medium.
nexus9112 [7]3 years ago
5 0

Electromagnetic waves do not require a medium for propagation, but still transfer energy by having an electric and magnetic field propagate perpendicular to one another.

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1The specific heat of substance (X) is greater than that for substance (Y). If equal amounts of heat are added to both these sub
geniusboy [140]

Answer:

Substance Y

Explanation:

A substance with a high specific heat capacity can absorb a large quantity of heat before it will raise in temperature.  A substance with a low specific heat requires relatively little heat to raise its temperature. Thus, if the same amount of energy was added to both substances, substance Y will reach the higher temperature, while substance X would require more energy to reach high temperatures.

3 0
3 years ago
Read 2 more answers
A bird has a kinetic energy of 3 J and a potential energy of 25 J. What is the mechanical energy of the bird?
Ahat [919]

Answer:

28 J

Explanation:

Mechanical energy is the sum of kinetic and potential energy in an object that is used to do work. In other words, it is energy in an object due to its motion or position, or both.

In physics, mechanical energy (Emech) is the energy associated with the motion and position of an object usually in some force field.

Therefore:

ME = KE + PE = 25 + 3 = 28 J

8 0
3 years ago
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How big is the universe I get it only God knows because he created all of it meaning everything.That is real.
deff fn [24]

god is mighty not only did he create the universe but also everything in it

but here's the answer 93 billion light years

7 0
3 years ago
Name one advantage and one disadvantage of the prepaid electricity system.​
Doss [256]

Answer:

The system prevents a consumer from accruing debt via electricity use, as it only allows the customer to use electricity which has been paid for upfront.

this gives the advantage of not allowing the consumer to rack up debt

the disadvantage for the consumer comes when they cannot afford to prepay in a time of financial difficulty - as the system now renders them as having no electricity as well as no money

8 0
3 years ago
This food chain is incomplete. Two groups of organisms are missing. One group of organisms that is missing are the producers, pl
Katena32 [7]

Answer:

Decomposers that recycle matter back into the food chain.

Explanation:

All dead organisms are food for decomposers. Decomposers that recycle matter back into the food chain.

5 0
4 years ago
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