Free Fall: An object is thrown upwards with a speed of 16 m/s. How long does it take it to reach a height of 7.0 m on the way up? Neglect air resistance.
A. 0.52 s
B. 1.2 s
C. 2.4 s
D. 3.1 s
E. 4.2 s
Answer: A
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Single-slit diffraction is characterized by
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A block attached to an ideal spring of spring constant 15 N/m executes simple harmonic motion on a frictionless horizontal surface
At time t = 0 s, the block has a displacement of -0.90 m, a velocity of -0.80 m/s, and an acceleration of +2.9 m/s2 . The mass of the block is closest to A) 2.3 kg B) 2.6 kg C) 4.7 kg D) 9.4 kg
Fine silica flour (fine powder) added to a polymer is a(n) _____________.
Fill in the blank(s) with the appropriate word(s).
The composition of Earth's atmosphere has not changed since its formation.
Answer the following statement true (T) or false (F)