Mechanics | Relativity Answers

a particle retards uniformly,it covers successive equal distances,the avg velocity in first part is 20,in third part is 12,what is its avg velocity in second part?????(the question is correct) ans: 241^1/2 +1
pls do try it

ouestion- two bodies of different masses Ma and Mb are dropped from two different height i.e a and b. the ratio of time taken by two to drop through these distances is.........

describe poisson and laplas equation.

The speed(v) and time(t) for an object moving along straight line are related as
t^2+100=4vt where v is in m/s and t is in seconds.Find the possible values of v.

explain the complete solution of my question step by step.

what is the buoyant force on a helium balloon with a radius of 30cm in air if density air = 1.29 kg/m^3?

which of the following measurement is more precise,
(i)2.00mm (ii)2.00cm (iii)2.00m

the radius of sphere is measured to be 5.3+- 0.1cm. calculate the percentage error in surface area and volume.

According to Galileo if we drop two objects of different masses from a height both will reach the ground at same time because the value of gravity which pulls them downward is same. Now the definition of weight is this that " weight is that force with which earth attracts a body towards it's centre" now the question is that if the weight of one object is heavier than other so there will be greater force in that object if the force is greater than motion will increase and the objectwill reach the groun earlierly so concept of Galileo is getting wrong according to this definition.

A piece of iron weighs 100gm in air, 90gm in water.what is the specific gravity of water?

A drop of water of radius 1mm is split in to 1000 small droplets of equal size. Find the energy spent if surface tension for water is 0.072 N/m