The infrared rays in sunlight can cause sunburn. Please select the best answer from the choices provideda. True
b. False
Answers
Answer: The correct answer is False.
Explanation:
Infrared is an example of electromagnetic wave. The wavelength of this wave is shorter.
Sunburn is caused by UV-radiations because the wavelength of this wave is longer and energy is higher.
Relationship between wavelength and energy is given by the Planck's equation:
where,
E = energy of the wave
h = Planck's constant
c = speed of light
= Wavelength of the wave
From the above relation, wavelength of the wave is inversely proportional to the energy of the wave. Hence, infrared rays does not cause any sunburn because these waves have low energy and does not effect the skin.
Hence, the correct answer is False.
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If a force of 12 n is applied to an object with a mass of 2kg the object will accelerate at
Newtons third law of motion is also known as the law of ?
Una sustancia radioactiva, cuya temperatura es inconstante, aumenta su temperatura en 30ºF, luego disminuye e 40ºC, luego aumenta en 12R y por último disminuye en 10K; entonces la temperatura final de dicha sustancia: a) No varia b) Aumenta en 24R c) Disminuye en 48R d) Aumenta en 48R e) Disminuye en 24R
Heisenberg's Uncertainty Principle states that we cannot simultaneously measure both the position and momentum of an object better than a certain accuracy. This limitation is not a consequence of imperfect technology, but is a fundamental law. It applies to all objects -- photons, electrons, baseballs, etc.. A highly monochromatic, continuous beam of laser light of wavelength 470 nm passes through an electro-optic shutter. The shutter opens and closes in a time interval of Δt = 90 ps . After passing through the shutter to what uncertainty, Δx, have the photons been localized?
Answers
Final answer:
The acceleration of the race car after 12.0 seconds is -3.33 m/s^2.
Explanation:
To find the acceleration of the race car after 12.0 seconds, we need to use the formula for acceleration: acceleration = change in velocity / time. The initial velocity of the race car is 144 km/h, and it comes to a halt, so the final velocity is 0 km/h. We need to convert these velocities to meters per second (m/s) before using the formula.
Given that 1 km/h = 0.2778 m/s, the initial velocity is 144 km/h x 0.2778 m/s = 40 m/s. Similarly, the final velocity is 0 km/h x 0.2778 m/s = 0 m/s.
Plugging these values into the formula, we get: acceleration = (0 m/s - 40 m/s) / 12.0 s = -3.33 m/s^2.
Learn more about acceleration here:
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Final answer:
The last and longest manned mission to Skylab is a notable point in history of space exploration, but the specific duration is not stated in the provided references.
Explanation:
In regard to the question, "What was the duration of the last and longest manned mission to Skylab?", the Skylab missions were part of a significant chapter in U.S. space exploration history during the 1970s. However, the provided reference material does not offer specific information about the duration of the last and longest manned mission to Skylab. Skylab was an important part of American space research, serving as a space station where numerous scientific experiments were conducted. Yet, without the specific details, it is difficult to provide an accurate response to this particular query. The Skylab program, operated by NASA in the 1970s, had its last and longest manned mission known as Skylab 4. The Skylab 4 mission launched on November 16, 1973, and lasted for a total of 84 days, with the crew returning to Earth on February 8, 1974. The crew consisted of Gerald Carr, Edward Gibson, and William Pogue. This mission set a record for the longest manned spaceflight at that time, spending an extended period aboard the Skylab space station for scientific research and experiments.
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Answers
Answer:
You Got me im Imposter
Explanation:
Answers
Considering the rule of three, the number of tablets in the bottle is 4.
In first place, the rule of three is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.
That is, what is intended with it is to find the fourth term of a proportion knowing the other three.
If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other) , the direct rule of three must be applied.
To solve a direct rule of three, the following formula must be followed, being a, b and c known data and x the variable to be calculated:
a ⇒ b
c ⇒ x
So:
The direct rule of three is the rule applied in this case as follow: if 250 mg = 0.250 g is the mass of 1 medicinal tablet, 1 kg = 1000 g is the mass of how many medicinal tablets?
0.250 grams ⇒ 1 medicinal tablet
1000 grams ⇒ x
Then:
x= 4 medicinal tablets
Finally, the number of tablets in the bottle is 4.
Learn more:
Given parameters:
Mass of each tablet = 250mg = 0.25g
Mass of all tablets in the bottle = 1kg = 1000g
Unknown:
Number tablets in the bottle = ?
Solution:
The number of tablets in the bottle;
Number of tablets =
Mass is the amount of matter that makes up a substance
Number of tablets = = 4000 tablets