A body is dropped from a tower of height 96 m. Another body is thrown up from the ground after a second with a velocity of 40 m/s. When and where they will meet? SOUNDARYA asked Answer: For the first body, u=0 m/s Let S=x (from top) x=0.5 gt2 &#...
Almost in all systems of unit second is the unit of time, most probably because, second is the most convenient one, if we look at the guidelines for selecting a unit. For more details refer to the following links http://www.aticourses.com/international_system_units.htm http://www.french-metrology.com/en/history/history-mesurement.asp http://physics.nist.gov/cuu/Units/history.html http://en.wikipedia.org/wiki/Metric_system http://en.wikipedia.org/wiki/Systems_of_measurement Incoming search terms:cgs unit for timeThe SI & CGS unit of [...]
What is meant by frequency? Does the loudness of sound increase with frequency? ( Thiruveni Nainar asked this question) Answer: As you know, sound is produced by the vibrations of the sounding body. Frequency of the sound produced by the vibrations of a body is same as the frequency with which the body vibrates, i.e; the no. of [...]
Please tell me why in all the system of units time is always in second? -Pankaj Sharma Incoming search terms:system unit
- “A source of sound frequency 256Hz is moving rapidly towards a wall with a velocity of 5m/s. How many beats per second will be heard if sound travels at a speed of 330m/s?”
Researchers at Cern, home of the Large Hadron Collider, have held 38 antihydrogen atoms in place, each for a fraction of a second.
Antihydrogen has been produced before but it was instantly destroyed