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A cooling fan is turned off when it is running at 175rpm.
a) What was the fan's angular acceleration, assumed constant?
b) How long did it take the fan to come to a complete stop?
Physics, Academics
How are chemical and physical changes different. What are some demonstrations that you might do to help your students differentiate between a chemical and physical change?
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Problem: The orbital speed of the Sun relative to the center of the Milky Way is about 250 km/s. By what fraction do the relativistic and Newtonian values differ for (a) the Sun's momentum and (b) the Sun's kinetic energ ...
After examining a cube-shaped object, explain, based on your observations, why Earth is not shaped like a cube? Describe 4 reasons with evidence to support each one.
Question: A rock is suspended by a massless string. When the rock is invacuum, the tension in the string is 39.2 N. When the rock iscompletely immersed in water, the tension is 28.4 N. When the rockis completely immersed ...
Question 1: Rob was supposed to spend his two-week school work experience at his local auto-repair shop. Unfortunately, his time on the job only lasted two days. On day two, Rob was asked to get the 1-liter air tool oil ...
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