According to the law of conservation of energy, energy cannot be ______________ or ______________
Fill in the blank(s) with correct word
created; destroyed
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A stunt pilot performs a circular dive of radius 800 m. At the bottom of the dive (point B in the figure) the pilot has a speed of 200 m/s which at that instant is increasing at a rate of 20 m/s2. What acceleration does the pilot have at point B?
?
?
a.
m/s2
b.
What conditions must be met for complete destructive interference between two waves?
Modern science attempts to seek explanations for phenomena that are based on
A) new subjective laws that are yet to be confirmed experimentally B) intuitive expectations C) the views of leading scientists D) the known laws of nature
If F = 5.0 N, what is the magnitude of the force exerted by block 2 on block 1?
A. 17 N B. 19 N C. 21 N D. 23 N E. 5.0 N