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Page-3 of General Science – Physics

Viscosity

When we move our fingers through any liquid we experience a resistance. This is because liquid offers a frictional force. The resistance offered by fluids (liquids as well...

May 21, 2013

Surface Tension

Surface tension of a liquid is defined as the tangential force per unit length acting at right angles on an imaginary line drawn on the surface of the liquid....

May 21, 2013

Sun-synchronous orbit

Sun-synchronous orbit or a heliosynchronous orbit very important because of its particular importance to satellites intended for remote sensing and military applications. A sun-synchronous orbit is one that...

May 21, 2013

Polar Orbits

The Polar Orbit is not much suitable for communication purposes because it moves in a different direction than that of direction of earth’s rotation. So, the use of...

May 21, 2013

Low Earth Orbits

A satellite can also be placed in Low Earth Orbits (about 1,000 kilometers above the Earth (between 400 miles and 1,600 miles)). However, satellites in LEO need a...

May 21, 2013

Geostationary and Geosynchronous Orbits

The core principle of an orbit is that as a satellite or object moved tangentially, it falls toward the earth / other body, but it moved so quickly...

May 21, 2013

Artificial Satellite Basics

Satellite refers to any project that is orbiting earth, sun or other planetary bodies. Satellites can be artificial or natural. The artificial satellites basically work on principle of...

May 21, 2013

Kepler’s Laws of Planetary Motion & Newton’s Law of Gravitation

In the early 1600s, Johannes Kepler proposed three laws of planetary motion as follows: Kepler’s First law (Law of orbits) Each planet moves around the sun in an...

May 21, 2013

Horizontal Projectile Motion: Physics Notes

When an object is thrown from horizontal at an angle θ except 90°, then it will follow a trajectory and the motion is called projectile motion.  A horizontally...

May 21, 2013

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