Answer:
the recessional velocity of the galaxy is 2.736×10^-3 km/s
Explanation:
for the recessinal velocity of the galaxy as v and d being the distance of the galaxy from us and H as the hubble constant, then hubbles law says:
v = H×d
= (22 km/s per million light years)×108 light years
= (2.2×10^-5 km/s per light years)×108 light years
= 2.376×10^-3 km/s
Therefore, the recessional velocity of the galaxy is 2.736×10^-3 km/s
The answer is D i took the test but got it wrong but i got to see the answers
Answer:
3400 m
Explanation:
Both lightning and thunder happen at the same time but one is faster than the other. The distance traveled by a sound can be calculated from its speed such that;
speed = distance/time, hence, distance = speed x time.
<em>For a thunder with 340 m/s speed and 10 seconds away from lightning, the distance between the thunder and the lightning can be calculated as</em>;
distance = 340 m/s x 10 s = 3400 m