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Posts Tagged ‘Antonio Meucci’

i have a few questions to ask and can people that respond cite their sources? (need info in about a day)?

January 24th, 2010 1 comment

– the hottest temperature in the US was recorded at Death Valley, California. does anyone know when was it and wat was the temperature?

-what kinds of energy is involved in a roller coaster ride?

-how and when was the telephone invented?

-how does radar or sonar work?

-what is the largest iceberg in the world? and what was the largest iceberg?

The hottest temperature ever recorded in the United States was 134 °F (56.7 °C) at Furnace Creek, Death Valley on July 10, 1913.

The cars on a typical roller coaster are not self-powered. Instead, a standard full-circuit lift-powered coaster is pulled up with a chain or cable along the lift hill to the first peak of the coaster track. Then potential energy becomes kinetic energy as the cars race down the first downward slope. Kinetic energy is converted back into potential energy as the train moves up again to the second peak. This is necessarily lower as some mechanical energy is lost due to friction. Then the train goes down again, and up, and on and on.

Credit for inventing the electric telephone remains in dispute. Antonio Meucci, Johann Philipp Reis, Alexander Graham Bell and Elisha Gray, amongst others, have all been credited with the invention. This all took place during the mid 1870’s. For more info – http://en.wikipedia.org/wiki/Telephone

Radar is a system that uses electromagnetic waves to identify the range, altitude, direction, or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations, and terrain. A transmitter emits radio waves, which are reflected by the target and detected by a receiver, typically in the same location as the transmitter.

SONAR (SOund Navigation And Ranging) — or sonar — is a technique that uses sound propagation under water (primarily) to navigate, communicate or to detect other vessels. There are two kinds of sonar — active and passive. Sonar may be used as a means of acoustic location.

The world’s largest iceberg has finally crashed into a massive tongue of ice floating in Antarctic waters.
The predicted “collision of the century”- between the B15-A iceberg and the Drygalski ice tongue – had been expected to happen on 15 January 2005 in McMurdo Sound in the Ross Sea. But the icy colossus instead became stranded on a shallow seamount a few kilometres away from the 70-km-long tongue – starving penguins and blocking shipping supply routes to Antarctic bases….More – http://www.newscientist.com/article.ns?id=dn7283
(It’s 115 km long)