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schepotkina [342]
4 years ago
13

Which of the following statements best describes an electromagnetic wave with a long wavelength?

Physics
1 answer:
zmey [24]4 years ago
5 0
It has a high frenquency and can only travel through a medium
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Calculate the speed of a bus that travels a distance of 55 miles in 0.75 hours.
Sonja [21]
Speed = distance / time = 55 / 0.75 = 73.3 miles per hour.
4 0
4 years ago
An electric device, which heats water by immersing a resistance wire in the water, generates 50 cal of heat per second when an e
Oksi-84 [34.3K]

Answer:

0.69 ohm

Explanation:

Heat generated per second, H = 50 cal/s

Potential difference, V = 12 V

Let R is the resistance of coil.

The formula for the heat is given by

H = \frac{V^{2}}{R}t

50\times 4.186 = \frac{12^{2}}{R}\times 1

R = 0.69 ohm

3 0
3 years ago
When a plant is entering the calvin cycle of photosythesis______.
Korolek [52]
The Calvin cycle<span> refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the </span>Calvin Cycle<span> is not directly dependent on light, it is indirectly dependent on light since the necessary energy carriers (ATP and NADPH) are products of light-dependent reactions.

So basically it indirectly needs the light, even it's called light-independant reaction.

So the answer is the last one.</span>
5 0
4 years ago
Read 2 more answers
PLEASE HELP IM CONFUSED
Fittoniya [83]

Sound waves can be used in a similar way to "see" things. After turning on a sound source, we can look at the pattern of reflected sound waves that bounce back to us. Our own ears and brain don't process sound into mental pictures.


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What is the answers
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Salt is a substance because a substance is a material that has constant composition regardless of its source. Salt is the only option that matches this description
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