If a new force were discovered with a range on the order of 10-18 m, predict the approximate mass of the exchange particle. (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
What will be an ideal response?
4 × 10-25 kg
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A 100 g glass container contains 250 g of water at 
A 100 g piece of unknown material at 
is added to the water in the container. The final temperature of the mixture is 
What is the specific heat of the unknown material in 
(specific heat of water 
specific heat of glass
A. 245 B. 387 C. 412 D. 558 E. 674
Which of the following is a valid spin state q-vector? (If you are using the letters on the back cover, you can indicate more than one choice by pointing to several letters.)
A. 
B. 
C. 
D. 
E. None of the above
F. All of the above
The isotope 14C cannot be used in dating old samples of which of the following?
a. charcoal from a fire b. a bronze implement from a cave c. a bone buried in mud d. All of the above can be dated using 14C.
An object of mass 2.00 kg starts at rest from the top of a rough inclined plane of height 20.0 m as shown in Fig. 8-9
If the work done by the force of friction is -150 J, what is the speed of the object as it reaches the bottom of the inclined plane? Use g = 10.0 m/s2. A) 15.8 m/s B) 150 m/s C) 10.0 m/s D) 20.0 m/s E) 200 m/s