HW 5: Work and Exercise 1 of 1
POSSIBLE POINTS: 100
A number of students have done some squats for their PE class. Now you are tasked with calculating how much work
they performed while doing the squats. (Warning, MANY assumptions coming into play)
Total Work performed Force' Distance Number of squats
Student weight in Newtons (N)
Half of height in meters (m)
Number of squats
Work performed (J)
500
1.01
19
251
0.88
102
850
0.68
1.721
<
0.99
2
825
326
201
20,000
0.77
77
35,000
1,000
1.15
230,000
I Review

An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?