Which types of EM waves can reach Earth's surface?
Most electromagnetic radiation from space is unable to reach the surface of the Earth. Radio frequencies, visible light and some ultraviolet light makes it to sea level. Astronomers can observe some infrared wavelengths by putting telescopes on mountain tops.
Why is the angle of refraction not the same as the angle of incidence?
Answer: Angle of Incidence is not equal to refraction
Explanation: It’s not because a refracted ray depends on how dense is the substance.
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Answer:
Due to force of gravity and the overlying weight of the skater
Explanation:
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this question is hard and i don't really understand it. can i have help. thank you
Answer:
Alpha particles carry a positive charge, beta particles carry a negative charge, and gamma rays are neutral. An alpha particle is made up of two protons and two neutrons bound together. Beta particles are high energy electrons. Gamma rays are waves of electromagnetic energy, or photons
Why do most girls not like it when we call them cute? I have been woundering this for so long now.
Answer:
Explanation:
Maybe because people call babies cute and youd bassically be saying theyre babies
short essay Question
Answer:
In wind turbines, the blades rotate due to the wind.
Explanation:
In wind turbines, the blades rotate due to the wind. While the blade rotates the generator connected to it also rotates. Thus the kinetic energy from the wind initiates the electric generator which in turn produces the electricity.
Thus the kinetic energy of the wind is converted to electricity.
Hope this helps!
Have a Wonderful Friday!
-Good Luck on your Homework- :)
Which statement correctly describes the relationship between wavelength, frequency, and energy?
A) Waves with a short wavelength have a high frequency and low energy.
B) Waves with a short wavelength have a high frequency and high energy.
C) Waves with a short wavelength have a low frequency and low energy.
D) Waves with a short wavelength have a low frequency and high energy.
Answer:
A.
Explanation:
maybe because the frequency of a wave increases due high wave and low energy. Hope this helps :3
Please help
Please help
Please help
Answer:
wait for a miracle
Explanation:
ANSWER MAY VARY:)
How would you explain the differences between graphing x > 4 and x ≥ 4 to a peer who missed this lesson?
Answer in complete sentences.
Explanation:
x>4 that is x is GREATER THAN 4 but not equal to but it's its the other one than it mean that x can be 4 or more nothing less
Answer:
x > 4 means that the value of { x } is greater than 4 while x ≥ 4 means that the value of { x } is greater or equal to 4.
Explanation:
Which characteristic can be inherited?
freckles on the skin
the ability to play piano
the length of hair in a human
the appetite of a puppy
What happens to the density of a material if you have a larger piece of it?(1 point)
The density will be smaller because the mass remains the same as the volume increases.
The density will be smaller because the mass remains the same as the volume increases.
The density will be greater because the mass increases but the volume remains the same.
The density will be greater because the mass increases but the volume remains the same.
The density will remain the same because mass and volume will both increase in the same way.
The density will remain the same because mass and volume will both increase in the same way.
The density will remain the same because mass and volume will remain the same.
The density will remain the same because mass and volume will remain the same.
Answer:
The density is more?
Explanation:
hopefully its right
Horseshoe crabs, or Limulus polyphemus, are very common along the east coast of the US. Fossils of horseshoe crabs have revealed that they have changed very little in the past 300 million years. Which statement best explains why this is the case?
A.Horseshoe crabs have a low reproductive rate.
B.Horseshoe crabs need to change only if humans are present in their environment.
C.The horseshoe crab is well adapted to its environment. and its environment has not changed much in the last 300 million years.
D.Horseshoe crabs have a high mutation rate.
In one to two sentences, identify the purpose of the roots in a plant and how a disease that harms the roots of a flowering plant would affect the plant’s ability to survive.
HELP ASAP 50 POINTS AND MARKING BRAINLIEST!!!!!!!!!!!!!!!!!!!!!
The purpose of the roots in the plants is to absorb nutrients.
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, .
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Which type of wave can only be transmitted through matter?
A) infrared
B) ultraviolet
C) sound
D) light
I am so so sorry again for how many questions there are!!
Calculate the Mechanical Advantage for the Inclined Plane (The second screenshot is for this question)
A 5-meter ramp lifts objects to a height of 0.75 meters. What is the Mechanical advantage of the ramp?
A mover uses a ramp to pull a 1000 N cart up to the floor of his truck, which is 0.8 meters high. If it takes a force of 200N to pull the cart, what is the length of the ramp?
Answer:
Weight of object = Wv = Mg
Weight along ramp = Wr = Wv sin θ
Mechanical advantage = Wv / Wr = 1 / sin θ = 1/.15 = 6.7
Sin θ = H / L = .75 / 5 = .15 θ = 8.6 deg
Note: M.A. = 5 / .75 = 6.7 because one has to move a weight 5 meters to raise it by .75 m
You can take your heart rate using:
Question 4 options:
Radial Pulse Point
Carotid Point
None of the above
A and B
Answer:
A I think
Explanation:
at the wrist lightly press the index and the middle fingers of one hand on the opposite wrist just below the base of the thumb at the neck lightly press the side of the neck just below the jawbone count the number of beats in 15 seconds and multiply by four and that's your heart rate
You can take your heart rate using both the Radial Pulse Point and the Carotid Point. The correct answer is "A and B."
1. Radial Pulse Point: The radial pulse is taken by placing two fingers (usually the index and middle fingers) on the radial artery, which is located on the wrist, on the same side as the thumb. By feeling the pulsations, you can count the number of beats per minute, which gives you the heart rate.
2. Carotid Point: The carotid pulse is taken by placing two fingers (usually the index and middle fingers) on the carotid artery, which is located on either side of the neck, just below the jawline. Again, you can count the number of beats per minute to determine the heart rate.
Both methods are commonly used to measure heart rate, and they are easy to access and provide accurate results. However, it's essential to be gentle when taking a pulse to avoid putting excessive pressure on the arteries.
To know more about heart rate:
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help thank you. will mark as brainliest if correct and no link to some unknown websites
Answer: 4
Explanation:
The answer to this question is number 4 as part 4 is where the roller coaster is slowing down. This means that it is gaining stored potential energy and in turn, losing kinetic energy. Furthermore, an object gains potential energy as it goes higher, usually.
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calculate-
On this model 40 AU = 1 meter.
A light year, the distance light travels in 1 year, is 63,240 AU
The nearest star is *Proxima Centauri is 4.2 light years.
i think im supposed to find the distance per meter or something
[tex]1 \times 12 = 63240 \sqrt{4.2} [/tex]
1x4<3=12
Match the type of electromagnetic wave to the description on the right.
Low energy, ow frequency, long wavelength waves on the electromagnetic spectrum.
Small part of the electromagnetic spectrum that humans perceive with their eyes.
High energy, high frequency, short wavelength waves on the electromagnetic spectrum.
Choises:
Visible light waves
Gamma radiation
radio waves
