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2 years ago

Why does all the water of the earth not get evaporated during hot summer days?

Physics

2 answers:

stepan [7]2 years ago

7 0

Answer:

Water has a high latent heat of vaporization, so it takes a large amount of heat to get converted into vapor. Although evaporation takes place continuously, there is simply not enough heat produced to evaporate all the water on earth at once.

Tju [1.3M]2 years ago

4 0

Explanation:

well, when water gets heated it starts to get hot whenever it gets hot it start to create steam or gas

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Q: Which direction are the force vectors pointing for a bullet fired from a gun. Assume that the bullet is traveling to the righ

Anit [1.1K]

Answer:

D: Left, Down

Explanation:

Assuming that the bullet has already left the gun, there are only two forces acting on the bullet now, during its motion:

- The force of gravity (the weight of the object), acting downward

- The air resistance acting against the direction of motion (so, if the bullet is moving right, the air resistance acts to the left)

As a result of these two forces:

- The bullet will accelerates downward in the vertical direction, due to the force of gravity

- The bullet will decelerated (slow down) along the horizontal direction, due to the air resistance that acts against the direction of motion of the bullet

So, the bullet will acquire a parabolic path.

Therefore, the correct answer is

D: Left, Down

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3 years ago

Read 2 more answers

Larry, a ten year old, first sees two identical glasses with water at the same level; then, the water from one of the short, wid

Crazy boy [7]

Larry, a 10-year-old, first sees two identical glasses with water at the same level;then, the water from one of the short, wide glasses is poured into a taller, thinner glass.Larry will likely conclude that <span>a. there is more water in the taller, thinner glass</span>

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3 years ago

A baseball travelling horizontally at 41 m/s [S] is hit by a baseball bat, causing its velocity to become 47 m/s [N]. The ball i

dmitriy555 [2]

Answer:

$46.3\times 10^3 m/s^2$

Explanation:

We are given that

Initial velocity of baseball=u=-41m/s

Because final and initial velocity are in opposite direction

Final velocity of baseball=v=47m/s

Time=t=1.9 ms= $1.9\times 10^{-3} s$

1 ms= $10^{-3} s$

We have to find the acceleration .

We know that

Acceleration= $a=\frac{v-u}{t}$

Using the formula

Acceleration= $a=\frac{47+41}{1.9\times 10^{-3}}m/s^2$

Acceleration= $46.3\times 10^3 m/s^2$

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3 years ago

How many different parts parts of the solar system can you see?

photoshop1234 [79]

Out of the solar system parts, we can see the sun, a few planets, some meteorites and comets.

Rest all is not visible through naked eyes

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3 years ago

A soccer ball is kicked from the top of one building with a height of H1 = 30.2 m to another building with a height of H2 = 12.0

viktelen [127]

Hi there!

Initially, we have gravitational potential energy and kinetic energy. If we set the zero-line at H2 (12.0m), then the ball at the second building only has kinetic energy.

We also know there was work done on the ball by air resistance that decreased the ball's total energy.

Let's do a summation using the equations:
$KE = \frac{1}{2}mv^2 \\\\PE = mgh$

Our initial energy consists of both kinetic and potential energy (relative to the final height of the ball)

$E_i = \frac{1}{2}mv_i^2 + mg(H_1 - H_2)$

Our final energy, since we set the zero-line to be at H2, is just kinetic energy.

$E_f = \frac{1}{2}mv_f^2$

And:
$W_A = E_i - E_f$

The work done by air resistance is equal to the difference between the initial energy and the final energy of the soccer ball.

Therefore:
$W_A = \frac{1}{2}mv_i^2 + mg(H_1 - H_2) - \frac{1}{2}mv_f^2$

Solving for the work done by air resistance:
$W_A = \frac{1}{2}(.450)(15.1^2)+ (.450)(9.8)(30.2 - 12) - \frac{1}{2}(.450)(19.89^2)$

$W_A = \boxed{42.552 J}$

8 0

2 years ago

Why does all the water of the earth not get evaporated during hot summer days?​

Why does all the water of the earth not get evaporated during hot summer days?