Answer:
System D --> System C --> System A --> System B
Explanation:
The gravitational force between two masses m1, m2 separated by a distance r is given by:
where G is the gravitational constant. Let's apply this formula to each case now to calculate the relative force for each system:
System A has masses m and m separated by a distance r:
system B has masses m and 2m separated by a distance 2r:
system C has masses 2m and 3m separated by a distance 2r:
system D has masses 4m and 5m separated by a distance 3r:
Now, by looking at the 4 different forces, we can rank them from the greatest to the smallest force, and we find:
System D --> System C --> System A --> System B
Answer : The correct option is, (A)
Explanation :
The formula used for speed of sound wave is:
where,
v = speed of sound wave =
= density of medium =
B = bulk modulus = ?
As the formula is,
Squaring on both the sides, we get:
Now put all the given values in the above formula, we get:
Therefore, the bulk modulus of the medium is