Answer:
Ceiling effect
Explanation:
A ceiling effect takes place when the test items are not challenging enough for a group of individuals. Thus, the test score will not increase for a subsample of people who may have improved because they have already attained the highest score that can be achieved on that test.
Answer:
a) Q=19600W b)Q=60W
Explanation:
q=k.(T₀-T₁)/x
a)
T₀=inside temperature (K)= 273+15=288K
T₁=outside temperature(K)= 273-20=253K
x=5x10⁻³m
k=1.4W/m.K
∴q=9800W/m² ⇒ Q=q.Surface
Q=9800W/m² . 1m . 2m = 19600W.
b)
T₀=inside temperature (K)= 273+10=273K
T₁=outside temperature(K)= 273-15=258K
x=10x10⁻³m
k=0.024W/m.K
∴q=60W/m² ⇒ Q=q.Surface
Q=60W/m² . 1m . 2m = 120W.
Answer:
Evaporation is an important process in the water cycle. If there is no evaporation, there is no moisture in the atmosphere. As a result, clouds cannot form and there is no rain. Plants do not receive natural water and die. And there would be no rivers or lakes because their water comes from evaporation via rain or snow.
Explanation:
Answer:
,Benzoic acid,Ether,Benzene Sulphonic acid