To what I don’t see anything
Grass-snail-predator like hawk-fungus(eats the rotten flesh after it dies)
Answer:
a)5m b)5secs c) 10secs
Explanation:
a) maximum height H = u²/2g
Given u = 50m/s
g = 10m/s²
H = 10²/20
H= 5m
maximum height reached by the rocket is therefore 5m
.b)Time it takes the rocket to reach its maximum height is Tmax = U/g
Tmax = 50/10
Tmax = 5seconds
c) How long the rocket spent in the air is the time of flight T
T = 2U/g
T = 2×50/10
T = 100/10
T = 10seconds
Answer:
A
Explanation:
Which statement is true about rubber, a polymeric material?
A.) The normal rubber band will break when the strain is greater than 1. Because according to the srain formula,
Strain = extension / original length.
For strain to be greater than one, the extension must have been greater than the original length.
B.) A normal rubber band breaks when the strain is less than 10%. This is not true
C.When a small amount of sulfur is added, to provide cross-links between molecules in rubber, the elastic limit is reduced. Surfur increases the elastic limit
D.When a small amount of sulfur is added, to provide cross-links between molecules in rubber, the ultimate tensile stress is reduced. This is not true. Surfur increases the tensile stress of the elastic material
The correct answer is therefore A