Answer:
4 m/s
Explanation:
to find m/s, divide the meters term by the seconds term. 100m/25s = 4m/s
Answer:
Explanation:
If the passage of the waves is one crest every 2.5 seconds, then that is the frequency of the wave, f.
The distance between the 2 crests (or troughs) is the wavelength, λ.
We want the velocity of this wave. The equation that relates these 3 things is
and filling in:
so
v = 2.5(2.0) and
v = 5.0 m/s
Answer:
One when it enters the glass slab from air and second time when it enters the air through glass slab. When light rays travelling through air enters glass slab, they get refracted and bend towards the normal. Now the direction of refracted ray changes again when it comes out of the glass slab into air.
Homo Habilis was a secies of the tribe Hominini, which lived between 2.4 and 1.5 million years ago. His name means "handy man" or "able man". Homo habilis was short, with disproportionately long arms compared to modern humans. His remains are often acompanied by primitive stone tools. Answer: The species was nemed because evidence indicates that members of the spieces used<span> stone tools. </span>
