An athlete at the olympic game runs at constant speed and covers the 100 yard dash in 9.52s. what will be his time for 100metre distance running at the same speed?

Time taken to cover 100 m is 10.42 s.

Explanation:

Given:

Old distance covered, yd.

Time taken is, s

Constant speed is given as:

yd/s

Distance covered now, m.

We need to convert meter to yard.

We have,  1 m = 1.0936 yards

New distance in yards is,

Speed = 10.5 yd/s.

Therefore, time taken to cover 109.36 yards is given as:

Therefore, he takes 10.42 s to cover 100 m running at same speed.

b) phosphorus pentoxide

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.