Advertisements
Advertisements
Question
A trawler is fully loaded in sea water to maximum capacity. What will happen to this trawler, if moved to river water? Explain your answer.
Solution
Density of sea water is more than the density of river water. So river water offers less upthrust to the trawler as compared to sea water. So, when a trawler is fully loaded sea water to maximum capacity, is moved to river water, it will sink.
APPEARS IN
RELATED QUESTIONS
Complete the following sentence :
An empty tin container with its mouth closed has an average density equal to that of a liquid. The container is taken 2 m below the surface of that liquid and is left there. Then the container will ____________ .
A bunch of feathers and a stone of the same mass are released simultaneously in air. Which will fall faster and why? How will your observation be different if they are released simultaneously in vacuum?
Express the relationship between the C.G.S. and S.I. units of density.
Complete the following sentence.
Density of water is .... ... kg m-3.
The density of copper is 8.83 g cm-3. Express it in kg m-3.
A jeweller claims that he makes ornaments of pure gold that has a relative density of 19.3. He sells a bangle weighing 25.25 gf to a person. The clever customer weighs the bangle when immersed in water and finds that it weighs 23.075 gf in water. With the help of suitable calculations, find out whether the ornament is made of pure gold or not.
[Hint : calculate R.D. of material of bangle which comes out to be 11.6].
A piece of wood of uniform cross section and height 15 cm floats vertically with its height 10 cm in water and 12 cm in spirit. Find the densities of wood and spirit.
A cork cut in the form of a cylinder floats in alcohol of density 0.8 gcm-3, such that 3/4 of its length is outside alcohol. If the total length of the cylinder is 35 cm and area of cross-section 25 cm2, calculate:
(1) density of cork
(2) wt. of cork
(3) extra force required to submerge it in alcohol
A body of mass 50 g is floting in water. What is the apparent weight of body in water? Explain your answer.
Complete the following result:
S.l. unit of density is _________