Answer:
v = 69.82 ms^-1
Explanation:
As we know,
R = vi2 sin2Ꝋ / g
vi2 =R g / sin2 Ꝋ where R is range R = 52m, Ꝋ = 3 Degrees
vi2 = 52 x 9.8 / sin 2(3) = 4875.227
v = 69.82 ms^-1
Power = Work/time
Work = Force*Displacement
Power = (Force*Displacement )/time
500 W= F*5m/10s
F = 500W*10s/5m =1000 J/s*s/m = 1000 J/m= 1000 N
Neutron stars are the most dense stars
the objective measure of the ratio of the rate at which a person expends energy, relative to the mass of that person,
A) Water freezing
This is called the process of turning water as a liquid to its solid form which is ice.
Ice is almost together as one unlike liquid. This is why the molecules are more orderly.
The process of freezing is exothermic which means the heat has to be removed in the process.