If a certain mass of mercury has a volume of 0.002 m3 at a temperature of 20°c, what will be the volume at 50°c?

a. 0.002010812m3

b. 0.004021624m3

c. 0.002021624m3

d. 0.10812m3

Answer : The correct option is, (A)

Solution : Given,

Volume of mercury at is

As mercury is a liquid. So, we have to apply the volume of expansion of liquid.

Formula used for the volume expansion of liquid,

or,

where,

= volume of liquid at temperature

= volume of liquid at temperature

= volume of liquid at temperature

= volume expansion coefficient of mercury at is 0.00018 per centigrade

Now put all the given values in the above formula, we get

Therefore, the volume of mercury at is,

i believe the answer is a

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it