Physics for Scientists & Engineers & Modern Physics, 9th Ed

 
69.
 The consumption of natural gas by a company satisfies 
the empirical equation V 5 1.50t 1 0.008 00t
2
, where V 
M
AMT
Q/C
BIO
Q/C
M
galaxies as dinner plates 25 cm in diameter, determine 
the distance between the centers of the two plates.
 58. Why is the following situation impossible? In an effort to 
boost interest in a television game show, each weekly 
winner is offered an additional $1 million bonus prize 
if he or she can personally count out that exact amount 
from a supply of one-dollar bills. The winner must do 
this task under supervision by television show execu-
tives and within one 40-hour work week. To the dismay 
of the show’s producers, most contestants succeed at 
the challenge.
 59. A high fountain of water 
is located at the center 
of a circular pool as 
shown in Figure P1.59. 
A student walks around 
the pool and measures 
its circumference to be 
15.0 m. Next, the stu-
dent stands at the edge 
of the pool and uses a 
protractor to gauge the 
angle of elevation of the top of the fountain to be f 5
55.0°. How high is the fountain?
 60. A water fountain is at the center of a circular pool 
as shown in Figure P1.59. A student walks around 
the pool and measures its circumference C. Next, he 
stands at the edge of the pool and uses a protractor to 
measure the angle of elevation f of his sightline to the 
top of the water jet. How high is the fountain?
 61. The data in the following table represent measurements 
of the masses and dimensions of solid cylinders of alu-
minum, copper, brass, tin, and iron. (a) Use these data 
to calculate the densities of these substances. (b) State 
how your results compare with those given in Table 14.1.