v_100_subject_string_diff_newFlow

In a group of 100 students, every student studies 8 subjects and every subject is studied by 10 students. The number of subjects are:

A particle of mass 100 g tied to a string is rotated along the circle of radius 0.5 m. The breaking tension of the string is 10 N. The maximum speed with which particle can be rotated without breaking the string is

A ball of mass 1.00 kg is attached to a loose string fixed to a ceiling. The ball is released from rest and falls 2.00 m, where the string suddenly stops it. Find the impulse on it from the string.

Both strings shown in figure, are made of same material and have same cross section. The pulleys are light. The wave speed of a transverse wave in the string AB is v_1 and in CD it is v_2 . Then v_1/v_2 is

If the speed of sound wave in a stretched string is V and Hook law is obeyed, then the exenion in the string if the speed of sound wave will become 1.22v.

The extension in a string,obeying Hooke's law,is x.The speed of sound in the stretched string is V.If the extension in the string is increased to 1.5x ,the speed of sound will be = n times0.61V then find 'n' value?

The extension in a string, obeying Hooke's law is x . The speed of sound in the stretched string is V . If the extension in the string is increased to 2x then speed of sound will be

The extension in a string, obeying Hooke's law, is x. The speed of sound in the stretched string is v. If the extension in the string is increased to 1.5 x , the speed of sound will be :-