Category: Physics

At what distance does gravity end? Near the surface of the Earth (sea level), gravity decreases with height such that linear extrapolation would give zero gravity at a height of one half of the Earth’s radius – (9.8 m·s−2 per 3,200 km.) What is SI unit of weight? The SI unit of mass is the […]

How much of Florida was underwater? As glaciers of ice in the north expanded and melted, the Florida peninsula emerged and submerged. When the sea level was lowest, the land area of Florida was much larger than it is now. The sea level was as much as 100 feet lower than at present. Florida s […]

What does 6 fire sirens mean? Few people really know what it means when they hear about a six-alarm fire. Two-alarm fire: 40 firefighters and four members of comand staff; double the trucks. Three-alarm fire: 60 firefighters, six from command staff. Four-alarm fire: 80 plus eight. Why did I just hear a siren? 1. What […]

Is fire a gas liquid or solid? Most flames are made of hot gas, but some burn so hot they become plasma. The nature of a flame depends on what is being burnt. A candle flame will primarily be a mixture of hot gases (air and vaporised paraffin wax). Can the power go out if […]

What are the 4 main provisions of the Endangered Species Act? The Endangered Species Act (“ESA”) prohibits importing, exporting, taking, possessing, selling, and transporting endangered and threatened species (with certain exceptions). ESA also provides for the designation of critical habitat and prohibits the destruction of that habitat. Is the Endangered Species Act successful? The US […]

How can you improve your physical fitness? They keep your heart, lungs, and circulatory system healthy and improve your overall fitness. Examples include brisk walking, jogging, swimming, and biking. Strength, or resistance training, exercises make your muscles stronger. Some examples are lifting weights and using a resistance band. Which exercise will help to cure diabetes? […]

Which planet has the slowest orbital velocity? If Pluto had maintained its planet status, it would have the slowest orbital speed at just 10,438 miles per hour. Instead, Neptune again wins with an orbital speed of 12,148 miles per hour. Compared to Earth’s 66,621 miles per hour, Neptune is practically sluggish. What season is Earth’s […]

What are the similarities and differences between the somatic nervous system and the autonomic nervous system? The somatic nervous system has sensory and motor pathways, whereas the autonomic nervous system only has motor pathways. The autonomic nervous system controls internal organs and glands, while the somatic nervous system controls muscles and movement. What is the […]

How many electrons are there with a charge of ΜC? Microcoulomb to Electron Charge Conversion Table Microcoulombs Electron Charge 0.000000000001 μC 6.2415 e 0.00000000001 μC 62.42 e 0.0000000001 μC 624.15 e 0.000000001 μC 6,242 e How many electrons does it take to make 100 ΜC of charge? The number of electrons that make up a […]

What are the three key components of Paraverbal communication? Paraverbal communication has 3 key components, which are broken out below. Pitch. Pitch is how high or low your voice goes. Speed or cadence. Cadence is how fast or slow you talk. Tone. This is a combination of factors that set or convey meaning. What are […]