Answer:
Sound waves. Anything that vibrates is producing sound; soundis simply a longitudinal wave passing through a medium via the vibration of particles in themedium. Consider a sound wavetraveling in air
Answer: Correct answer is B = 1.776933×
Explanation:
Given :
Moment of inertia I = 8.26×
kg
Mass of planet m = 6.54×
kg
Also, Planet is solid sphere so that, Moment of inertia is I =
m
=0.4m
Where R is radius of planet
Putting into calculation
We get,
I =
m
8.26×
= 0.4×6.54×
×
8.26×
= 2.616 
3.15749235×
= 
R = 1.776933×
Thus, Correct answer is B = 1.776933×
Chemical energy comes from the food that we eat

The apparent depth of an object at the bottom of a tank filled with a liquid of refractive index 1.3 is 7.7 cm. What is the actual depth of the liquid in the tank?

REFRACTIVE INDEX = 1.3
APPARENT DEPTH = 7.7 cm

REAL DEPTH OF THE OBJECT.



Refractive Index = 1.3
Apparent Depth = 7.7 cm
Putting the values in the formula:-
