What is the upward force exerted by water called?
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An echo is returned in 3 s. What is the distance of the reflecting surface from the source, considering the speed of sound as 342 ms-1?
One step in the production of hydroelectric power involves _____.
The speed of the light is maximum in
The acceleration due to gravity at the surface of the earth (mass M and radius R) is proportional to ___.
The diameter of the reflecting surface of a spherical mirror is called a/an
An object of 5.0 kg is raised through a height of 2.0m. The work done in the process is
The energy released at the end of digestion is in the form of
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