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chubhunter [2.5K]
3 years ago
8

A roller coaster car travels up and down the hills of its track. Neglecting

Physics
1 answer:
Volgvan3 years ago
7 0

Answer:

option D is the correct option

Must always remain constant

Explanation:

According to their law of conservation of energy :it states that in a closed system,the total mechanical energy is always constant although energy may change from one form to another. e. g from potential energy to kinetic energy

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You decide to visit Santa Claus at the north pole to put in a good word about your splendid behavior throughout the year. While
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Answer:

Explanation:

The question here is that if sneezy hands from a similar rope while delivering presents at the earth's equator, what will be the tension in the rope be. Here is the solution:The tension on the rope when it is at pole, T= 455 NTo find, the tension, t= mgTo solve for mass, m= t/g. Substituting this we have, m=455/9.8. m=46.43 kgAssume that the downwards acceleration is, a= -46.43 m/s^2.T = mg + maT = (46.43 kg) ( 9.8 m/s^2) - (46.43 kg) (-46.43 m/s^2)T = 455.01 kg-m/s^2 - -2155.74 kg-m/s^2T = 2610.75 kg-m/s^2 = 2610.75 N

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3 years ago
Why don't gorilla evolve to human if scientist was about to said that human evolve from gorilla to human?
Zanzabum

Answer:

"Man's mind is far too advanced for his survival needs."

See also "Wallace", Darwin's junior partner who couldn't explain the gap in intelligence.

7 0
3 years ago
What is science? Wrong answers will be deleted.
Gala2k [10]

Answer:

Science is the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.

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3 0
3 years ago
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Mike believes that electricity can be made using a strong magnetic field and a coil of wire. which question would be appropriate
Elis [28]

DC - direct current can be produced using a strong magnetic field, example is electricity produced through electric generator

5 0
3 years ago
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Humans require organ systems to carry out life processes. Single-celled organisms do not have organ systems and yet they are abl
k0ka [10]

Answer: is <em><u>Organelles present in single-celled organisms act in a manner similar to organ systems</u></em>

<em><u /></em>

Explanation:  

Multicellular organisms organ system play a critical role for the smooth functioning of whole body. Millions of cells combined to make an organism. The role of organ system in whole body is to provides oxygen and nutrients to the cells and eliminates the toxic material such as carbon dioxide. Organ systems like, respiratory system, digestion system, and cardiovascular play an important role in the human body to perform various functions for its survival.  

Unlike multicellular organisms the unicellular only consists of single cell e.g. prokaryotic organisms and eukaryotic organisms namely, Amoeba, Euglena, salmonella, Fungi etc. Single celled organisms are able to carry out all processes mandatory for the sustenance of life with the help of single cell only e.g. respiration and digestion.They can survive with the help of single cell. Unlike multicellular organisms unicellular do not require multiple number of cell for its survival.

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3 years ago
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