In lifting a 5000-N piano via a pulley system, every 1 m of rope pulled down raises the piano by 0.1 m. Ideally, this indicates that the force needed to lift the piano is
A. 5000 N.
B. 50 N.
C. 500 N.
D. not enough information
Answer: C
Environmental & Atmospheric Sciences
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Viral diseases are particularly difficult to combat because they
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Environmental & Atmospheric Sciences
A diurnal tidal pattern is easily explained by the natural tendency for water to rock at a specific
frequency when in an enclosed basin Indicate whether the statement is true or false.
Environmental & Atmospheric Sciences
A line connecting points of equal pressure on a weather map is called an isobar
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
The Cenozoic era is often called the "age of ________."
Fill in the blank(s) with correct word
Environmental & Atmospheric Sciences