Yall i need this asap
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Edge 2020
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Why does a hot air balloon float?The shape of the balloon prides lift.The volume of the air displaced by the balloon is less than the volume of the balloonThe weight of the air displaced is less than the volume of the balloonThe weight of the balloon is less than the weight of the air displaced by the balloon
What is one property of a wave that determines how much it will diffract when it encounters an obstacle?-speed -amplitude -polarization -wavelength Suppose two waves collide, and the temporary combined wave that results is smaller than the original waves. What term best describes this interaction? -diffraction -destructive interfernce -standing wave formation -constructive interfernce The formation of a standing wave requires -the traveling of a wave for a long distance -constructive interference between two waves of slightly different frequencies -that refraction and diffraction occur at the same time in a wave -interference between incoming and reflected waves
Use the H-R diagram to answer the following questions.What is the approximate temperature of the supergiant Betelgeuse? Which star on this diagram is the most similar to the Sun in luminosity and temperature?
1 kg of rice is weighed by
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Answer:
Osmosis and cellular transport
Explanation:
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For this case, the first thing you should do is take into account the definition of normal force.
By definition, we have:
- The normal force is that which is exerted on an object that is perpendicular to the surface.
If we define the coordinate system as:
- Horizontal axis points to the right
- Vertical axis points up
Then An object resting on a wall can have normal force in a horizontal direction.
Answer:
The normal force is perpendicular to the surface. The direction can be horizontal. Example: an object on a wall.
B. Multi-cell line
C. Multi-cell cluster
D. Supercell
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Answer:
B. Multi-cell line
Explanation:
A multi-cell line, or how it is more commonly known, a squall line, is basically a group of storms forming a line, like a bow, they have been seen to cover hundreds of miles long but usually only 10 or 20 miles wide.
It is theorized that this is because when a cyclone is formed, there are two forces of "wind" one ahead and one behind, concentrating air masses as if the winds were "squishing" them to form a line.
Answer: Multi-cell Line
Explanation:
Multi-cell line storms form in a long, narrow line. While multi-cell lines may be just 10 to 20 miles wide, they can be hundreds of miles long. Multi-cell lines are known as "squall lines."
a change in color
a change in frequency
a change in speed
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Answer:
A change in speed
Explanation:
Light bends when it moves at a particular angle into a medium that has a different refractive index than the one it was coming from.
This bending is as a result of the change in speed of light as it enters the medium with a different refractive index.
This action is known as Refraction of light.
Refraction depends on the change in speed of light as it changes media and the angle of refraction depends on the angle of incidence of the ray of light and the refractive index of the material.