Describe the movement of air over two nearby land areas, one of which is heated more than the other
Answers
The description required is the same as the one on the land and sea breezes.
On the heated land, the ground gains heat energy and heats the air on top of it. When this air is heated it expands and becomes less dense. It rises and the cold dense air from the land that is not much heated flows to replace it. Thus cold air flows to the heated land. The hot air moves up then flow to replace the cold air forming a kind of a cycle.
This process repeats itself as long as one land is heated more than the other.
Answer:
The air above the less-heated will be cooler.
Explanation:
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Which one of the following is not a safety rule in the laboratory. a. To sit on a stoolb. To follow instructionsc. To wear shoes with hard solesd. Handling apparatus​
Answers
b. How high did the arrow go?
c. How long is the arrow in the air?
Answers
a) The velocity of the arrow at its peak is zero
b) The maximum height of the arrow is 31.9 m
c) The time of flight is 5.10 s
Explanation:
a)
The motion of the arrow fired straight upward into the air is a uniformly accelerated motion, with constant acceleration (acceleration of gravity) towards the ground.
The initial velocity of the arrow when it is fired is upward: since the acceleration is downward, this means that as the arrow moves upward, its velocity decreases in magnitude.
Eventually, at some point, the velocity of the arrow will become zero, and then it will change direction (downward) and will start increasing in magnitude. The moment when the velocity raches zero corresponds to the peak of the trajectory of the arrow: therefore, at the peak the velocity is zero.
b)
Since the motion of the arrow is a uniformly accelerated motion, we can use the following suvat equation:
where
v is the final velocity
u is the initial velocity
a is the acceleration
s is the displacement
For the arrow, we have:
u = 25 m/s
v = 0 (when the arrow reaches the peak)
(negative because downward)
s is the maximum height reached by the arrow
And solving for s,
c)
In order to find the time it takes for the arrow to reach the maximum height, we use the following suvat equation:
where here we have:
v = 0 is the final velocity at the peak
u = 25 m/s
And solving for t,
This is the time the arrow takes to reach the top of the trajectory: therefore, the total time of flight is twice this value,
Learn more about accelerated motion:
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The wave changes direction as it changes its speed. _______
The wave changes direction at an angle equal to the angle of incidence. ________
diffraction
reflection
refraction
PLEASE HELP!!
Answers
Answer:
Here is the answer.
Explanation:
The answers are:
1. Diffraction
2. Refraction
3. Reflection
Hope this helps!
Answers
In ancient Greece each city-state or polis had its own form of government and was independent of the other city-states or polis
I hope that's help !
solvent
saturated
precipitate
Answers
The answer is Solvent. The reason is in the wording, 'the substance that does the dissolving.' A solvent does the dissolving, a solute is something that can be dissolved.
Answer:
solvent
Explanation:
Answers
Answer
Hi,
An increase in amplitude from 3m to 6 m increases the energy it transports. The frequency of the wave is not affected
Explanation
Amplitude is the height of a wave where as frequency is the number of waves that pass by each second. A wave with bigger amplitude has more energy than a wave with smaller amplitude. A point where more waves pass contains more energy that is transferred every second. The change in the amplitude of a wave does not change its frequency. However, frequency is inversely related to the wavelength of a wave.
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