Answer:
If they were reduced to the levels like those during the ice ages, I think the Earth might go back to being frozen again.
Right now, what make the glaciers and polar ice caps melt?
Global Warming and greenhouse gases are depleting the Ozone. The Ozone is what traps the heat from the Sun and radiates it back to the Sun. Greenhouse gas is depleting the Ozone, which means that the heat from the sun is less protected, which results in climate change. It makes the Earth hotter which can mean that the glaciers are melting because the climate in the North and South pole is way to hot for it to stay frozen.
Hope this helped!
Answer: Earth would become frozen and also greenhouse gases reduce the ozone layer which is why glaciers are melting and Earth is getting hotter. It is why greenhouse gases are a big issue.
ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements.
Calculate the force at sea level that a boy of mass 40 kg exerts on a chair in which he is sitting.
________ N
A. 390
B. 40.
C. 4
The force at sea level that a boy of mass 40 kg exerts on a chair in which he is sitting is 390 N.
How to calculate the force?Mass of the boy = 40 kg.The direction of that force is always vertically downward.At sea level,
The acceleration due to gravity g[tex]= 9.8 m/s^2[/tex]Then the weight of the boy is the mass of the body itself.m = 40 kg.
Therefore,
w = [tex]40 kg *9.8 m/s^[/tex]
=392 N kg
= 392 N
392N means approximately 390 N.
Hence, the force at sea level that a boy of mass 40 kg exerts on a chair in which he is sitting is 390 N.
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Final answer:
To calculate the force exerted by a 40 kg boy sitting on a chair at sea level, multiply the boy's mass by the acceleration due to gravity (9.80 m/s²) to get 392 N, which is rounded to 390 N, following significant figure rules.
Explanation:
Calculating Force at Sea Level
To calculate the force at sea level that a boy of mass 40 kg exerts on a chair in which he is sitting, we apply Newton's second law of motion. Since we are considering his weight (the force due to gravity), the acceleration in this case is due to Earth's gravity, which is approximately 9.80 m/s². Therefore, the formula to calculate the force (F) is:
F = m x g
Where:
m is the mass of the boy and is given as 40 kg.
g is the acceleration due to gravity and is 9.80 m/s².
Now, we calculate the force:
F = 40 kg x 9.80 m/s² = 392 N.
Following significant figure rules, we round our answer to 2 significant figures because the mass was provided to 2 significant figures. Thus, our final answer is:390 N
please help!! 16 points !!!
Hey!
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[tex]\Large\boxed{\mathsf{Option~D}}[/tex]
We can automatically eliminate option A and C because finding fossils isn't just trying to find the evolution of whales or bird. Archaeologists use fossils to see how animal evolve over a certain period of time. While they can build animals will the fossils they find but that isn't the most important use of fossils.
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[tex]\Large\boxed{\mathsf{Option~A}}[/tex]
Typically scientists you radioactive dating to find how old a fossil. In this case that isn't an option. I chose option A because scientists can use shape of the fossil to determine what species its from and what part of the body it is.
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Hope This Helped! Good Luck!
I WILL MAKE YOU BRAINLIEST! PLEASE ANSWER THIS CORRECTLY!!!
The Doppler effect indicates that the universe is expanding because_________.
A) light from other galaxies is the same color
B) light from other galaxies is different colors
C) light from other galaxies is blue shifted
D) light from other galaxies is red shifted
Answer:
D) light from other galaxies is red shifted
Explanation:
The Doppler effect indicates that the universe is expanding because light from other galaxies is red shifted.
Hope this helps!
I took the test.
What is the Coriolis effect and doppler effect in detail. Tell me about both. Will give brainliest and lots of points
Answer:
The Coriolis effect is basically Earth's rotation, the Doppler effect is the change in frequency or wavelength of a wave.
what is meant by the statement" the melting poin of glycerine is 13 degree celsius
Answer:
This means the temperature at which glycerine changes from solid to liquid is 13 degrees Celsius.
Explanation:
Melting point of a substance is the temperature at which it changes from the solid state to liquid state. Heat breaks the intermolecular forces of attractions that holds the substance together.The solid and liquid state are in equilibrium at the melting point. The melting point of a substance depends on pressure, shape of the substance, etc.
The melting point of glycerine at 13 degrees Celsius signifies the temperature at which it changes from solid to liquid at standard atmospheric pressure.
When the statement "the melting point of glycerine is 13 degrees Celsius" is mentioned, it's describing the temperature at which glycerine transitions from a solid to a liquid state under normal atmospheric pressure.
Unlike the triple point, which is the specific temperature and pressure at which a substance's solid, liquid, and gas phases coexist in equilibrium, the melting point is simply the temperature at which the solid and liquid phases are in equilibrium at 1 atm pressure.
For instance, the triple point of water is a more precise calibration temperature than its melting point because it is not influenced by pressure.
a 2.35 water bucket is swung in a full cirlce of radius 0.824 m just fast enough so that the water doesn't fall out the top meaning n equals zero there. What is the speed of the water at the top
Answer:
2.84 m/s
Explanation:
At the top position of the circular trajectory, the normal reaction is zero:
N = 0
So it means that the only force that is providing the centripetal force is the gravitational force (the weight of the bucket). Therefore we have:
[tex]mg = m \frac{v^2}{r}[/tex]
where
m is the mass of the water bucket
g = 9.8 m/s^2 is the acceleration of gravity
v is the speed of the bucket
r = 0.824 m is the radius of the circle
Solving for v,
[tex]v=\sqrt{gr}=\sqrt{(9.8 m/s^2)(0.824 m)}=2.84 m/s[/tex]
What color of light must blue light mix with to create white light?
a.
yellow
b.
white
c.
blue
d.
green
According to the additive theory of color, when we join the three primary colors of light (Red + Green + Blue) we get White light.
On the other hand we have secondary colors of light that are:
Yellow = Red + Green
Magenta = Blue + Red
Cyan = Blue + Green
Now, if we know that:
Red + Green + Blue = White
And:
Red + Green = Yellow
Then:
Yellow + Blue = White
The melting point of ice is the same temperature as the of water.
Answer:
Answer is freezing point of water. The same melting point of ice is the same freezing point of water.
Answer:
Freezing point.
Explanation:
In the case of freezing point and melting point there is a same transition of matter. In this case, freezing point is defined as the, liquid is changing into solid and this process will occur at the same temperature when melting is occur means solid is change into liquid.
When water is freezing or melting any one can notice that its temperature will remain at 0°C throughout these processes whether ice is converting into liquid or liquid is converting into ice.
A corporation gives out its profits as dividends paid to whom?
Answer: Stockholders
Explanation: stockholders
A corporation gives out its profits as dividends paid to its shareholders.
Who are shareholders?Individuals or organizations that have made financial investments in a firm by purchasing its shares or stocks are referred to as shareholders. When a company makes a profit, it has the option of keeping those earnings in the company for use in future investments or paying those profits out to shareholders in the form of dividends.
The payment of dividends typically takes the form of cash, but they may also be distributed in the form of extra shares of stock or property. The number of shares a shareholder owns in conjunction with the dividend policy of the company determines the amount of dividend money that shareholder receives. One method by which a company can show appreciation to its shareholders for the money they have invested and maintain their support is through the distribution of dividends.
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kyle is swinging at the playground. as he moves from the top of the swing to the bottom he will _____.
a. gain potential energy and lose kinetic energy
b. lose potential energy and gain kinetic energy
c. change potential energy into mechanical energy
d. change kinetic energy into mechanical energy
need help ASAP!!
Answer:
a. gain potential energy and lose kinetic energy
Explanation:
Answer: gains potential and lose kinetic energy
Explanation:
A wave is produced in a rope. The wave has a speed of 33 m/s and a frequency of 22 Hz.
What wavelength is produced?
A systematic approach to problem solving is called a (an)
Answer:
An orderly, systematic approach to problem solving is called the. Scientific method.
"Scientific method" would be the systematic approach to solve the problems.
The concepts, as well as techniques for organizational knowledge development or exploration, include the identification but also the articulation of a challenge, which is considered as the Scientific method.Observation collecting via inspection as well as experimentation, as well as the creation and also verification of hypotheses.
Thus the response above is correct.
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