Questions

A Sonar of a ship sends sounds waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor.

What will be the force of attraction between two bodies weighing 20 kg and 50 kg, respectively, with a distance of 2 metre between them?

Any undesirable change in physical, chemical or biological characteristics of air, land, water or soil is called?

The space shuttle which took Sunita Williams beyond earth was

Malthusian theory is associated with which of the following ?

Where is the commercial capital of Sri Lanka?

Which among the following is a recently debated principlethat Internet service providers and governments regulatingthe Internet should treat all data on the Internet the same,not discriminating or charging differentially by user, content,website, platform, application, type of attached equipment,or mode of communication?

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
Barking up the wrong tree