4. (a) Let the reading on the Celsius scale be x and the reading on the Fahrenheit scale be
y. Then
. If we require y = 2x, then we have
which yields y = 2x = 320F.
(b) In this case, we require
and fi
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 = (0.0600 kg)/(2.
P.1- Referring to the numbers in Sample Problem 15-7, we have m = 0.25 kg, b = 0.070
kg/s and T = 0.34 s. Thus, when t = 20T, the damping factor becomes
e bt 2 m = e b 0.070gb 20gb 0.34 g/ 2b 0.25g =
P1.- . (a) The pressure (including the contribution from the atmosphere) at a depth of htop
= L/2 (corresponding to the top of the block) is
ptop = patm + ghtop = 1.01 105 + (1030) (9.8) (0.300) Pa =
P1.- The period T and orbit radius r are related by the law of periods: T = (4 /GM)r ,
2
2
3
where M is the mass of Mars. The period is 7 h 39 min, which is 2.754 104 s. We solve
for M:
M=
4 2 r 3
4 2
P 2 .- From = r F , we note that persons 1 through 4 exert torques pointing out of the
page (relative to the fulcrum), and persons 5 through 8 exert torques pointing into the
page.
(a) Among persons 1
P1. If we write r = x i + yj + zk, then (using Eq. 3-30) we find r F is equal to
d yF zF ii + bzF xF g j + d xF yF ik.
z
y
x
z
y
x
With (using SI units) x = 0, y = 4.0, z = 5.0, Fx = 0, Fy = 2.0 and F
MPhys 2101 Homework 4 Solution Fall `06
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The numerical answers to the problems are calculated with the values used in the problems found
in the printed textbook; the values for your parti
Phys 2101 Homework 3 Solution Fall 06
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These solutions use the parameter values from the problems printed in the book, not those that
appear in your personal homework assignment. The log
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Mhys 2101 Homework 2 Solution Fall 06
These solutions use the parameter values from the problems printed in the book, not those that
appear in your personal homework assignment. The lo