Answer:
Explanation:(a)Mercury Barometer and Aneroid Barometer
(b)Gypsum
(c)Near point of human eye is 25 cm and the far point is infinity.
Answer:
The density of the metal is 5200 kg/m³.
Explanation:
Given that,
Weight in air= 0.10400 N
Weight in water = 0.08400 N
We need to calculate the density of metal
Let be the density of metal and be the density of water is 1000kg/m³.
V is volume of solid.
The weight of metal in air is
.....(I)
The weight of metal in water is
Using buoyancy force
We know that,
....(I)
Put the value of in equation (I)
Put the value of Vg in equation (II)
Hence, The density of the metal is 5200 kg/m³.
The critical thinking step has the student just completed
in the situation describe when the student concluded that soda intake really
does have an effect on their energy level is the analysis. This is because the student
observed the effects of drinking soda by his experience.
Answer:
HCI creates an acidic environment, which promotes the process of pepsin.
When that happens, pepsin is maximally active and works on a fully digestion of the presented protein.
On the other hand HCI prevents the activeness of the amylase, thereby only a small part of starch is digested.
Explanation:
The physiological significance of these effects are: salivary glands found in the mouth which has a neutral pH environment segregates amylase, meanwhile pepsinogen becomes pepsin thanks to the compatibility with this environment.
While pepsin is widely active at a lower pH inside the stomach, amylase activity, on the other hand decreases at lower pH environment.