4. (a) Let the reading on the Celsius scale be x and the reading on the Fahrenheit scale be y. Then y 9 x 32 . If we require y = 2x, then we have 5
2x
which yields y = 2x = 320F. (b) In this case, we require y
9 x 32 5
x (5) (32) 160 C
1 2
x and
SOLUTION HOMEWORK 13
1. 59. In the following CV
3 2
R is the molar specific heat at constant volume, C p
5 2
R is
the molar specific heat at constant pressure, T is the temperature change, and n is the number of moles. The process 1 2 takes pla
13. The wave speed v is given by v = , where is the tension in the rope and is the linear mass density of the rope. The linear mass density is the mass per unit length of rope: = m/L = (0.00 kg)/(2.00 m) = 0.0300 kg/m. Thus
v
500 N 129 m s. 0
Chapter 4
1. (a) The magnitude of r is
5.02 + ( 3.0) 2 + 2.02 = 6.2 m.
(b) A sketch is shown. The coordinate values are in meters.
2. Wherever the length unit is not specified (in this solution), the unit meter should be understood.
^ (a) The po
Chapter 3
1. The x and the y components of a vector a lying on the xy plane are given by
ax a cos ,
ay a sin
where a | a | is the magnitude and is the angle between a and the positive x axis. (a) The x component of a is given by ax = 7.3
Chapter 2
1. The speed (assumed constant) is (90 km/h)(1000 m/km) (3600 s/h) = 25 m/s. Thus, during 0.50 s, the car travels (0.50)(25) 13 m. 2. Huber's speed is v0=(200 m)/(6.509 s)=30.72 m/s = 110.6 km/h, where we have used the conversion factor 1 m
How are membranes adjusted for different temperatures?
A membrane remains fluid as temperature decreases, until finally the phospholipids settle into a closely packed arrangement and the membrane solidifies. The membrane remains fluid to a lower temp
Brent Mansingh Dr. Beckers February 27, 2008 Attendance Assignment Single Sex Schools and Classes When I first saw this topic for attendance, I asked myself, "Should there be single sex schools?" almost immediately. children. And the answer came
I d