Impulse: A 0.24 kg blob of clay is thrown at a wall with an initial horizontal velocity of 16 m/s. If the clay comes to a stop in 91 m/s, what is the average horizontal force on the clay due to the wall?
A. 42 N
B. 26 N
C. 35 N
D. 51 N
Answer: A
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Frequency and amplitude are independent of each other.
Answer the following statement(s) true (T) or false (F)
A factory siren indicating the end of a shift has a frequency of 80 Hz. What frequency is perceived by the occupant of a car traveling towards the factory at 30 m/s? The speed of sound in air is 343 m/s
A) 83 Hz B) 85 Hz C) 87 Hz D) 89 Hz E) 91 Hz
Geologists view the section of Earth called the ______________ as consisting of a number of close-fitting plates
Fill in the blank(s) with correct word
(For discussion.) Which do you personally think is the weirdest aspect of quantum mechanics and why?
A. It does not support objectively real quanton properties. B. It requires possibly superluminal connections. C. It has two incompatible time evolution rules. D. There seems to be some kind of unexplained disconnect between microscopic and macroscopic physics.