1. Carry out the following arithmetic operations:
(a) the sum of the measured values 756, 37.2, 0.83, and 2.5;
(b) the product 0.0032 x 356.3
(c) the product 5.620 x π.
(d) 3.42 × 25.4 + 2.32
3 .2
PHYS 101, Chapter 1 Homework
2. The population density of Los Angeles is about 4000 people/km2. That of San
Francisco is about 6000 people/km2. How many times farther away is the average
person's nearest neighbor in LA than in San Francisco?
PHYS 101, Chapter 1 Homework
3. A house is 50.0 ft long and 26 ft wide and has 8.0-ft-high ceilings. What is the volume
of the interior of the house in cubic meters and in cubic centimeters?
PHYS 101, Chapter 1 Homework
4. For the triangle shown in this figure what are (a) the length of the unknown side,
(b) the angle θ, (c) the sine of φ, and (c) the tangent of θ?
PHYS 101, Chapter 1 Homework
5. Estimate the number of Ping-Pong balls that would fit into a typical-size room (without
being crushed). In your solution, state the quantities you measure or estimate and the
values you take for them.
PHYS 101, Chapter 1 Homework
6. What is the volume of your body in cubic centimeters? Describe how you estimate
this volume.
PHYS 101, Chapter 1 Homework
7. Analyze the dimensions for each of these equations. Are they dimensionally correct?
1 2 1
2
mv
=
mv
mgh
a)
+
2
2
b)
xma = 12 mv 2
c)
v = v + at 2
PHYS 101, Chapter 1 Homework