Logic Puzzles

Logic Puzzle 1

Puzzle 1: Which number replaces the question mark?Puzzle 2: Which symbol replaces the question mark?Puzzle 3: Which grid replaces the question mark?Puzzle 4: Which grid replaces the question mark?Puzzle 5: Which grid replaces the question mark?

Uniform Mass Distribution

Gravitational Filed and Potential

Gravitational Filed: The space surrounding a material body in which its gravitational force of attraction can be experienced is called its gravitational field. Gravitational Filed Intensity: Gravitational filed intensity at any point is defined as the gravitational force experienced by any test mass divided by the magnitude of test mass when placed at desired point. Read more about Gravitational Filed and Potential[…]

Geostationary Satellite

Geostationary Satellite

The satellite which appears stationary relative to earth is called geostationary or geosynchronous satellite, communication satellite. A geostationary satellite always stays over the same place above the earth such a satellite is never at rest. Such a satellite appears stationary due to its zero relative velocity w.r.t. that place on earth.The orbit of a geostationary Read more about Geostationary Satellite[…]

Consequences of Global Warming

Green House Effect & Global Warming

Green House effect: The trapping of the sun’s warmth in a planet’s lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet’s surface. Global warming:  Global Warming is the increase of Earth’s average surface temperature due to effect of greenhouse gases, such Read more about Green House Effect & Global Warming[…]