Two alpha particles (helium nuclei) are separated by 
m. What is the magnitude of the force between the particles due to their charge?
A. 
B. 
C. 
D. 14 N
E. 58 N
E. 58 N
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Which of the following physical occurrences fit the physical definition of an event?
A. The collision of two point particles B. A point particle passing a given point in space C. A firecracker explosion D. A party at your dorm E. A hurricane F. A, B, and C T. Any of the above could be an event, depending on the reference frame’s scale and/or how precise the measurements need to be.
In the asteroid impact theory of the extinction of the dinosaurs some 65 million years ago, the dinosaurs (and over half of all the other species on Earth at that time) died off largely because
What will be an ideal response?
A wave is traveling in a string at 50 m/s. When the tension is then increased 18%, what will be the resulting wave speed?
a. also 50 m/s b. 54 m/s c. 45 m/s d. 21 m/s e. 59 m/s
A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2 . What is the time interval required for it to reach a 10-rad displacement after starting from rest?
a. 28 s c. 56 s b. 2.0 s d. 18 s