Answer:
1. While boiling replace the cap and allow it to cool. Vapours inside condense and form water creating vacuum above them. Observation - The can crumbles due to air pressure from outside. This proves that air exerts pressure.
2. Measure the volume of the liquid displaced when the object is submerged. Measure the initial volume of water in graduated cylinder. Submerge the irregular object. Measure the final volume of the water.
— The difference between the initial volume and the final volume is the volume of the object.
hope can help ^_^
The basic characteristics of living organisms can be reminded by using DR. R. COG one characteristic for each letter:
D- It has Dna or genetic material in its cells.
R- It has the ability to Reproduce
R- It Responds to the environment, this helps it survive easily
C- The Cell is its basic unit
O- It Obtains energy from some type of source
G- It Grows and develops with the passing of the time
Answer: D) 28 cm
Explanation:
This problem can be solved by the following equation:
(1)
Where:
is the change in the length of the outer skin of the Concorde
is the initial length of the outer skin of the Concorde
is the coefficient of linear thermal expansion for aluminium
is the variation in temperature
Isolating :
(2)
(3)
(4)
Finally:
<span>This apparent measurement difference is due to a change in position of the observer, and is called "Parallax"
In short, Your Answer would be Option C
Hope this helps!</span>
