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4 years ago

PLZ ANSWER THESE ASAPPP INEED YOUR HELP !!

Physics

2 answers:

kodGreya [7K]4 years ago

8 0

<h2>Answer 1:</h2>

<u>Clouds are formed </u><u>where the atmosphere contains few particles </u>

<h2>Explanation:</h2>

Clouds are formed when there are small particles of vapors in the atmosphere or we can say that there are tiny invisible vapors present in the air. When the temperature falls, these particles gather together and they form clouds. Actually condensation process is responsible for the formation of these clouds hence we can say that particles present in the air are actually responsible for the formation of clouds.

<h2>Answer 2:</h2>

The examples are as follows

marshmallow toasting over a campfire
Rice moving in a pot of water that is being heated

<h2>Explanation:</h2>

When we take fluids into consideration, such as air or a liquid, and it is heated and then travels away from the source, it carries the thermal energy along with itself. This type of heat transfer is known as convection. The fluid above a hot surface expands, becomes less dense, and rises. So we can see that the above mentioned examples show the discussed scenario.

Burka [1]4 years ago

4 0

Where the air has low humidity
idk ;-; you can do it!

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John is going to use a rope to pull his sister Laura across the ground in a sled through the snow. The rope makes an angle of 25

Liula [17]

The mass of Laura and the sled combined is 887.5 kg

5 0

3 years ago

a block is suspended 5 m above the ground if the block has a mass of 20 kg how much potential energy is stored in the block (g=

ozzi

Answer:

P.E = 980 Joules

Explanation:

Given the following data;

Mass = 20 kg

Height = 5m

Acceleration due to gravity = 9.8 m/s²

To find the potential energy stored in the block;

Mathematically, potential energy is given by the formula;

$P.E = mgh$

Where,

P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Substituting into the equation, we have;

$P.E = 20 * 9.8 * 5$

P.E = 980 Joules

3 0

3 years ago

You are traveling 70 mph (31.3 m/s) and slam on the brakes to avoid hitting another car. How far do you travel if it takes you 8

Arlecino [84]

You traveled a distance of 620.075 meters if it takes you 8.5 seconds to stop.

<u>Given the following data:</u>

Initial velocity, U = 31.3 m/s

Time, t = 8.5 seconds.

We know that acceleration due to gravity (a) for an object is equal to 9.8 meter per seconds square.

To find the distance traveled, we would use the second equation of motion:

Mathematically, the second equation of motion is given by the formula;

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

Where:

S is the distance travelled.

u is the initial velocity.

a is the acceleration.

t is the time measured in seconds.

Substituting the parameters into the formula, we have;

$S = 31.3(8.5) + \frac{x}{y} (9.8)(8.5^2)\\\\S = 266.05 + 4.9(72.25)\\\\S = 266.05 + 354.025$

<em>Distance, S</em><em> = </em><em>620.075 meters.</em>

Therefore, you traveled a distance of 620.075 meters if it takes you 8.5 seconds to stop.

Read more: brainly.com/question/8898885

6 0

2 years ago

Two obiect accumulated a charge of

tamaranim1 [39]

Answer:

A. 181.24 N

Explanation:

The magnitude of hte electrostatic force between two charged objects is given by the equation

$F=k\frac{q_1 q_2}{r^2}$

where

k is the Coulomb's constant

q1, q2 are the magnitudes of the two charges

r is the separation between the charges

In this problem, we have:

$q_1=4.5\mu C=4.5\cdot 10^{-6}C$ is the magnitude of the 1st charge

$q_2=2.8\mu C=2.8\cdot 10^{-6}C$ is the magnitude of the 2nd charge

r = 2.5 cm = 0.025 m is the separation between the charges

Therefore, the magnitude of the electric force is:

$F=\frac{(9\cdot 10^9)(4.5\cdot 10^{-6})(2.8\cdot 10^{-6})}{(0.025)^2}=181.44 N$

So, the closest answer is

A) 181.24 N

3 0

4 years ago

Explain the formation of color in terms of reflection and absorption of light waves.

antiseptic1488 [7]

Answer:

Every object has a different density and therefore carries different properties. When rays of white light strike an object, each ray light strikes the object with different frequency and therefore is absorbed and reflected differently from the host object.

In case if all the frequencies are absorbed by the object, it turns out to be black in color. Whereas on the other hand, if it is a mix of absorption and reflection, it makes different colors based on its frequencies and other properties of the object.

6 0

3 years ago