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ArbitrLikvidat [17]

3 years ago

14

Where is the sun in the life cycle? HELP ITS A FINAL EXAM

1 answer:

scZoUnD [109]3 years ago

8 0

Answer:

At the very beginning it is what states the whole life cycle

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A Balloon is filled with water inside, when it is hanged over a burning fire the balloon filled with water doesn't brust why??

GaryK [48]

Answer:

The water filled balloon does not burst because the rubber obviously does not reach a temperature sufficient for it to melt or burn. The rubber is stretched thin so that heat is quickly transferred into the balloon. With air inside the balloon, this heat is not readily dissipated away from the spot touching the flame.

6 0

3 years ago

A(n) ____ follows a curved path in space around Earth. No options.. I'm confused..

lesya [120]

It's a projectile near the earth under the influence of gravity only.

6 0

4 years ago

What storm causes flash floods? <br> Tornado <br> Thunderstorm<br> Hurricane

Mariulka [41]

Answer:

hurricane.

Explanation:

............................

8 0

3 years ago

The ball of a ballpoint pen is 0.5 mm in diameter and has an ASTM grain size of 12. How many grains are there in the ball

Fudgin [204]

Given :

The ball of a ballpoint pen is 0.5 mm in diameter and has an ASTM grain size of 12.

To Find :

How many grains are there in the ball?

Solution :

Volume of ball of the ballpoint is :

$V = \dfrac{4 \pi r^3}{3}\\\\V = \dfrac{4\times 3.14 \times 0.5^3}{3}\ mm^3\\\\V = 0.523\ mm^3$

Now, grain size of 12 has about 520000 grains/mm³.

Therefore, number of grains are :

$n = 520000\times 0.523\ grains\\\\n = 271960\ grains$

8 0

3 years ago

Lars is standing near the edge of a 90-meter cliff. He throws a ball upward, but does not catch it, and it falls to the bottom o

Kipish [7]

Answer:

c. 43 m/s

Explanation:

Given the following data;

Displacement, S = 90 meters

Time, t = 5.55 seconds

To find the initial velocity;

We would use the second equation of motion given by the formula;

$S = ut + \frac {1}{2}at^{2}$

Where;

S represents the displacement or height measured in meters.

u represents the initial velocity measured in meters per seconds.

t represents the time measured in seconds.

a represents acceleration measured in meters per seconds square.

We know that acceleration due to gravity is -9.8m/s² because the direction is downward.

Substituting into the equation, we have;

$90 = u*5.55 + \frac {1}{2}*(-9.8)*5.55^{2}$

$90 = u5.55 - 4.9*30.8025$

$90 = u5.55 - 150.93225$

Rearranging the equation, we have;

$u5.55 = 90 + 150.93225$

$u5.55 = 240.93225$

$u = \frac {240.93225}{5.55}$

Initial velocity, u = 43.41 ≈ 41 m/s

4 0

3 years ago