PHYSICS MIDDLE SCHOOL

What cloud makes hail

Answers

Answer 1
Answer:

Answer:

Cumulonimbus

Hail development. Hail is a type of strong precipitation, which is shaped in rainstorms mists (Cumulonimbus). Tempests mists comprises of beads of fluid water (at temperatures lower than 0°с, the beads can be in a thermodynamically instable supercooled condition) and ice gems

Explanation:


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HIGH SCHOOL

An automobile moves at a constant speed over the crest of a hill traveling at a speed of 88.5 km/h. At the top of the hill, a package on a seat in the rear of the car barely remains in contact with the seat. What is the radius of curvature (m) of the hill?

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Answer:

Explanation:

Since the package remains in contact with the car's seat, the package's speed is equal to the car's speed. At the top on the mountain the package's centripetal force must be equal to its weight:

The centripetal force is defined as:

Here v is the linear speed of the object and r is the radius of curvature. We need to convert the linear speed to :

Now, we calculate r:

COLLEGE

5. The oldest rocks in the South Atlantic Ocean, immediately adjacent to the African and South American continental shelves, are 120,000,000 years old (time). Calculate the average rate of seafloorspreading for the South Atlantic Ocean over its entire existence (Hint: Use formula: velocity = distance/time): ______________km/yr (velocity). Now convert that to: _______________ cm/yr:

Answers

Answer:

The continental drift speed is   6.18 cm/yr

Explanation:

In order to calculate the drift speed of the continents, we can assume that it is constant for what the relationship meets

 

       v = d / t

Where v is the speed, t the time and d the distance

To find the distance we use the closest points that are in the South Atlantic, after reviewing a world map, these points are Brazil and Namibia that has an approximate distance of 7415 km

To start the calculation let's reduce the magnitude

    d = 7415 km (1000m/1km) (100cm/1m)

    d = 7.415 10⁸ 8 cm

    t = 120000000 years  

    t = 1.2 10⁸  year

With these values ​​we calculate the average speed

   v = 7.415 10 3 / 1.2 108 [km / yr.]

   v = 6.18 10-5 Km / yr

   v = 7.415 10 8 / 1.2 10 8 [cm / yr]

   v = 6.18 cm / yr.

   

The continental drift speed is   6.18 cm/yr

HIGH SCHOOL

A kind of prose writing in which the writer explains information is called _____. exposition illustrative writing propaganda vignette

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A kind of prose writing in which the writer explains information is called illustrative writing.

Illustrative writing refers to a kind of prose writing that explains a topic thoroughly in straightforward manner, providing adequate information and facts. An example of an illustrative writing piece could be an essay or article on "The Rules of Playing Badminton" or "How to Lose 10 pounds in a Month".

Answer:

They are correct!

Explanation:

I just took the quiz.

HIGH SCHOOL

Brianna fires a gun horizontally from a height of 500 m and with a muzzle velocity of 240 m/s. How fast does it travel horizontally after one second?

Answers

In this kind of projectile problem, we always ignore air resistance.  (At least
through high school Physics.)  If we tried to include air resistance, that would
make the problem hopelessly complicated, when all we're really trying to do is
work with the effects of gravity ... separating out what gravity does and what it doesn't do.

Ignoring the effects of air resistance, there is no horizontal force acting on
the bullet after it leaves the gun, so its horizontal acceleration is zero, and
its horizontal velocity doesn't change.  If it left the muzzle with a horizontal
velocity of 240m/s, then its horizontal velocity is that same number, from
then until it hits something.

(By the way . . . your question says that Brianna fires a gun horizontally, and
then it asks how fast does it travel after one second.  I took the liberty of
addressing the horizontal velocity of the bullet instead of the gun.)


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