PHYSICS HIGH SCHOOL

What can cause a big city to be warmer than the surrounding countryside?

Answers

Answer 1
Answer: In cities, a phenomenon known as the "urban heat island effect" causes air temperatures to be warmer than in nearby suburban or rural areas and
The smoothness of the landscape and the local climate—not the materials of the concrete jungle—govern the urban heat island effect, a new study finds
Answer 2
Answer: there are many people in the city and so much traffic that it pollutes the air and makes it warmer where the country dosent have much traffic so there for its cooler

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Help pls ill give points​
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Solar energy is: expensive renewable inefficient during winter all of the above

Answers

All of the above is the right answer for Odesseyware.

Solar energy is free and renewable.  

Its efficiency is determined by the photovoltaic or heat-exchanging equipment used, and the efficiency of the infrastructure built to interconnect them.  None of that depends on the time of the year.  For a given amount of solar energy absorbed by the collector, the amount of useful output energy doesn't change with the season.

What is the acceleration of all objects due to gravity? What does this mean?

Answers

Every body that has larger mass has a field of attraction called gravitational field. All objects abandoned in the region of this great body is attracted to its center. The large body prints the object an acceleration which is called the acceleration of gravity.
Gravity acts on everything. The force if gravity is equal to 9.8 m/s^2

Why does the number of dwarf planets recognized by astronomers in the solar system sometimes increase?

Answers

Because sometimes it happens that they discover a dwarf planet
that nobody ever knew about before.  When that happens, they
ADD the new one to the list of known dwarf planets, and then the
total number of dwarf planets on the list increases by 1 .

A man on the moon with a mass of 90 kilograms weighs 146 newtons. The radius of the moon is 1.74 × 106meters. Find the mass of the moon.

Answers

What is relative velocity?​

Answers

Relative velocity is the velocity of an object or observer B in the rest frame of another object or observer A

Answer:

the velocity of a moving body relative to another body is called relative velocity.

According to the U.S. Census Bureau, in 2016, about 12.7% of the American population lived in poverty. Research demonstrates that people living in or near poverty have worse health outcomes and less access to health care than those who do not. Neighborhoods with many poor or low-income residents often have fewer resources that promote health. The lack of one resource, in particular, results in food insecurity and sometimes malnutrition. That is A) access to clean drinking water. B) preventive or needed medical care. C) grocery stores offering affordable and nutritious foods. D) recreational facilities that encourage physical activity. E

Answers

Answer:

grocery stores offering affordable and nutritious foods ( C )

Explanation:

The lack of grocery stores offering affordable and nutritious foods in particular results in food insecurity and sometimes malnutrition because people living in these areas( poor neighborhoods) under research can barely afford three ( 3 ) square meals if Nutritious foods are not sold to them at a subsidized rate in relation to how they are sold elsewhere.

The inability to afford three square healthy meals will result to malnutrition and poor health conditions among people living in these neighborhoods according to the research
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