Math 29
Worksheet 1
Due 9/15
1. Benjamin Franklin dropped oil on a lakes surface and noticed that a given amount
of oil could not be induced to spread out beyond a certain area. If the number of drops
Math 29
Worksheet 10
due 12/3
The energy ux at a distance r meters from a radiating body is dened to be the
amount of energy per unit time (measured in joules/second or watts) passing through a
square
Math 29
Worksheet 9
Due 11/17
1. A solar receptor is placed at the ground level between two buildings whose heights
are 115 meters and 70 meters. The buildings are 100 meters apart. The angle is the
a
Worksheet 8
Math 29
Due 11/10
A radioactive substance decays according to the formula
N (t) = No e(tto ) ,
where N (t) denotes the number of atoms of the element at time t, No = N (to ), and the
posit
Worksheet 7
Math 29
Due 11/3
An alternative to the exponential growth model is the more realistic model given by the
logistic growth formula
No L
,
N (t) =
No + (L No )er(tto )
where N (t) denotes the
Math 29
Worksheet 6
Due 10/27
1. Suppose you have a credit card debt of $ 1,800.00 with a credit card company that
charges a xed 5.99% annual interest rate compounded daily. You receive an oer from
an
Math 29
Worksheet 5
Due 10/13
1. We measure the intensity of sound in watts/cm2 . The intensity I0 = 1016 watts/cm2 ,
is the lowest intensity which is audible to humans. For a sound of intensity I we
Math 29
Worksheet 4
Due 10/7
In a psychophysical experiment designed to measure performance in a recognition
task, a subject is presented with a set of pictures of peoples faces. Later, the subject is
Math 29
Worksheet 3
Due 9/29
1. Rivers presently carry about 1010 m3 of soil and rock to the sea each year throughout the
world. Roughly how long will it take at that rate for the continents to shrink
Math 29
Worksheet 2
Due 9/22
1. It takes Jupiter 11.86 years to orbit the sun. How many times each year are earth,
Jupiter, and the sun co-linear (i.e. all in a row)? Write a paragraph justifying your
Math 29
Worksheet 11
Due 12/10
1. Scientists estimate that only 15% of the chemical energy contained in the food that a
person eats can be used to perform mechanical work, such as climbing a hill or p