Answer:
Satellites can gather weather data from much higher altitudes than land-based instruments can.
<span><span>Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion.</span><span>Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.
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If you run a 5K on a circular course, your distance<span> traveled is 5 kilometers, regardless of where you started and finished. </span>Distance<span> is a scalar quantity. </span>Displacement is an object's change in position, only measuring from its starting position to the final position.
Check out this page: http://www.physicsclassroom.com/class/1DKin/Lesson-1/Distance-and-Displacement
The first human made object made to orbit earth was the Soviet Union's Sputnik 1, it launched the 4th of October 1957.
Answer:
The ability to do something or act in a particular way, especially as a faculty or quality.
"The power of speech"
Answer:
Explanation:
Lead has an half life of 43.5 seconds
The radioactive decay law says
N(t) = No•2^(-t / t½)
Hence, the percent of a sample of the Lead-214 isotope that decay after a time equivalent to 7 half-lives
N(t) = No•2^(-t / t½)
N(t) / No = 2^(-t / t½)
N(t) / No = 2^-7
N(t) / No = 7.81 × 10^-3
To percentage
N(t) / No = 7.81 × 10^-3 × 100
N(t) / No = 0.781 %
