Answer:
10 meters
Explanation:
A wave is a natural phenomenon that travels through a material medium but does not have a permanent effect on the particles of the medium. It can either be electromagnetic or mechanical. The propagation of a wave can be represented by a sinusoidal graph, which has crests and troughs.
A crest is the point of maximum displacement, while trough is a point of minimum displacement. The distance between two crests or troughs gives the wavelength of the wave.
From the question, the horizontal distance between a crest to the next trough is 5 meters which is half of the wavelength.
Thus wavelength = 5 × 2
= 10
The wavelength is 10 meters.
Answer:
The absolute best time to view the Moon is a few days after the first quarter.
Explanation:
This is exactly when half the moon is lit. At this phase it is perfectly positioned in the night sky and there is enough light to reveal an astonishing amount of detail.
Answer:
A secondary source is a source from a second hand perspective that DID NOT experience the event first handed but is writing about the event without the origional experience of the event. An example of this would be the topic of World War 1, a secondary source would be a news article or a book talking about the war without actually experiencing it. But a primary source would be a autobiography of a person experiencing World War 1. Another great example is that a secondary soource is a biography of someone while a primary source is a autobiography of a person.
Explanation:
Answer:
A lack of safe water, inadequate excreta disposal facilities, poor hygiene, poor living conditions and unsafe food can all cause diarrhoeal diseases.
Explanation:
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