Week 5 Homework
Due May 6. 1. Work (a) Give a sports example of positive work. (b) Give a sports example of something that is tiring but does not involve work. (c) Give a sports example where the forc
Solutions HW 12
Chapter 8: Exc: 11,12,13,14
Case 6.
12: As there are four distinguishable states of these electrons, four
electrons can be placed in each level.
14.It can become more conducting as the
Soultions HW 11
Chapter 9
Exc. 4,8,14,24; prob: 2,6
Case : 2
4. A very small current can flow through the bird as its two legs are
quite close to each other on the wire and the potential drop across i
Solutions HW 13
Chapter 11: Exc: 18,20,24
Problems: 4,5
Ex 18:A magnetic field pushes a moving charged particle at right angles to its
velocity. The particle therefore does not move in the direction o
Solutions HW 14
Chapter 11: Ex: 26,30
Case 1.
Exc 26Aluminum trays would reflect the microwaves and make it difficult to cook the
food properly.
Ex: 30: Microwaves cannot respond to holes in the metal
P18 Solutions Problem set 8
Chapter 4: Exc 12, 18, 20 and Problem 2
Chapter 5: Exc 8,14,18,34,54
Chap 4 Exc 12:
At high altitude, the air is less dense so filling the bottle with high altitude air mea
Solution
Physics 18 Quiz II
1. When you walk on a sidewalk in which direction is the force of friction?
(a ) upwards, (b) in the direction you are moving, ( c) opposite to the direction you are
moving
Solutions Chapter 7:
Exc 2, 4, 10,14
Cases 1, 4
2.
The rack is a pendulum and its period depends only on its length and on the
strength of gravity.
4.
The restoring force acting on the tree is proport
Week 1 Homework
Due Monday April 7. 1. Give a sports example of an object that travels a large distance but has a small displacement. 2. Can you give a sports example wherein the acceleration of an ob
Week 4 Homework
Due April 28. 1. The top figure on the next page shows snapshots of a golf swing taken at regular intervals. Call the forward direction of the swing the positive direction for increasi
Week 3 Homework
Due April 21. 1. The textbook says "this process of adding the mass of a large body to the mass of a smaller one is very important in many sports." What example does the textbook use t
Week 2 Homework
Due April 14. 1. Why is the optimal launch angle in shot put slightly less than 45 ? According to the textbook, which factor is more important than launch angle in determining the rang
Solutions problem set 10:
Chapter 8: Ex: 6,8,14,34
problems: 2,4 5
6. A normal bowling ball is electrically neutral-it has as many positive as negative
charges. Thus the attractive and repulsive force