at 2.5 seconds the helicopter has a kinetic energy of 20 j.what is the mechanical energy at that time?

2 answers:

6 0

The mechanical energy of an object is equivalent to the sum of its potential and kinetic energy. If the helicopter is grounded, then its mechanical energy will be 20 J. If it is in the air, then its potential energy will be calculated using:P.E = mghAnd then added to the kinetic energy to obtain mechanical energy.

Tom [10]2 years ago

3 0

Energy per time is called the power. It is the rate of energy. For this question, we simply divide the values. We do as follows:

Mechanical energy per time = 20 J / 2.5 s = 8 J /s

You might be interested in

OK 30 POINTS TO WHOEVER CAN ANSWER MY QUESTION.GOD PLS HELP

MrMuchimi

Answer: Energy is defined in science as the ability to move matter or change matter in some other way. Energy can also be defined as the ability to do work, which means using force to move an object over a distance. When work is done, energy is transferred from one object to another. Hopefully i helped

Explanation:

8 0

2 years ago

Analyzing relationships read the description of life expectancy in this section. explain why the oldest people in a population m

lakkis [162]

The oldest people in the population may be much older than the average life expectancy due to the more quality food source in the area. The addition of modern medicine, also, drastically helped provide longer life expectancies for many of the people.

7 0

2 years ago

Which branch of the government is responsible for drawing up Articles of Impeachment against an American president? Federal Dist

tino4ka555 [31]

The answer would be : The house of representatives
The branch of Government that is responsible for drawing up articles of impeachment against an American president is the house of Representatives. The United States Constitution allows the member of of the representatives to expel a government official with 2/3 of the votes.

4 0

2 years ago

During experiments with shoot tips' response to light, the Darwins concluded that phototropism is caused by __________, Boysen-J

alexandr402 [8]

Answer:

D. a signal; a chemical; auxin

Explanation:

Phototropism is described as a phenomenon that involves the growth of a specific organism as an outcome towards a light stimulus. It is generally observed or found in plants yet occurs in a few other organisms, for example, fungi. The different cells that are being found on the plants that are placed far from the light posses a specific chemical known as 'auxin' that generally reacts when the "phototropism" occurs.

8 0

2 years ago

Nancy's therapist encourages her to think about her strengths rather than her weaknesses and to develop a habit of thanking othe

Leno4ka [110]

Your answer is cognitive-behavior therapy. (:

4 0

2 years ago