Identify one of the unique properties of water, that is required for life on Earth and explain in detail how polarity and hydrogen bonding gives water this property? The luminosity of a star with a radius of (7.60x10^6) meters and a surface temperature of 30,000 Kelvin ...
What happens to the length of a day when the polar ice caps of the earth melts and how? The half-life of cobalt^{58} is 72 days. Calculate its average life. 1 degree = how many km? The bacterial count in a certain culture increased from 1000 to 4000 in 3 days. What was the av...
Earthis home to a dazzling array of creatures and plants. Pink flamingos fill the skies, humongouselephantsstomp through the savannas, and weird fruits and ferns hide in crevasses everywhere. We'll never know how many different species roam our planet. There are just too many. But that doesn...
First, scientists will need to see what materials are available on the moon—and what they’ll need to bring from Earth. The collider could use regular, supercooled magnets or “higher-temperature” (approximately 100° Kelvin or –173° Celsius) magnets, so researchers need to determine whether...
The case raised that the burden of proof for clear and convincing evidence is a requirement to commit a person for psychiatric treatment. [Pictured: A photo illustration of a court ruling.] 1978: Presidential Records Act Kelvin Kay // Wikimedia Commons 1978: Presidential Records Act Before the...
Lime powder works well on many levels in a number of ways in both indoor and outdoor spaces. BY: KIMBERLEY MCGEE Exterior Types of Earth Movers An earth mover is a piece of construction equipment that moves dirt, debris and other materials around a work site. BY: KELVIN HAYES Interi...
Therefore, scientists concluded that a black hole had passed between Earth and the object. Emitted Radiation When material falls into a black hole from a companion star, it gets heated to millions of degrees Kelvin and accelerated. The superheated materials emit X-rays, which can be detected by...
provides more detail: “The second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom. This definition refers to a caesium atom at rest at a temperature of 0 Kelvin.” ...
With LEDs, the color is more often indicated as a "Kelvin temperature" value ranging from 2700 (warm white, for cosy homes) to over 5000K (cold white, for places like offices, home workshops, and factories). Photo: Color temperatures: This is one of my table lamps with two different co...
The energy released by the sun takes an hour to reach the earth's surface. a. True b. False Lord Kelvin's belief that the earth was no older than 400 million years old was based on the assumptions that (a) __...