Procedure
1. Use a microwave that has a labeled frequency. Most microwaves have a
frequency of 2450 MHz.
Note: Most microwave frequencies can be found on a sticker inside or on the
back of the microwave.
2. If the microwave has a turntable, either turn th

1. If a wave traveling through air decreases its wavelength by half, describe what
happens to the wave speed and frequency.
2. A transverse wave is traveling down a rope with mass, m = 10 kg, and length, L =
50 m. If the rope is under a tension force of 2

post lab questions
1. when the tension of the slinky spring was held constant and frequency systematically
changed the speed of the wave did not change. Therefore wave frequency does not affect the
wave speed. The amplitude affects the speed of the wave i

Answers
Number of
nodes
Time for 10
period(s)
Time for 1
period
Period(s)
Frequency(Hz)
2
3
4
5
4.73
4.50
3.74
2.68
0.473
0.450
0.374
0.268
0.946
0.450
0.2493
0.1072
1.0571
2.222
4.011
9.328
Change in
frequency
from
subsequent
nodes
1.165
1.789
5.317
Calc

1. Use the 5 N spring scale to determine the mass of the Slinky. Record the mass in
Table 1.
2. Count the number of loops the Slinky contains. Record this value in Table 1.
3. Calculate the mass per loop. Record this value in Table 1.
4. Use the distance

Chapter 11, Problem 018
Your answer is correct.
A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is open to
the air at the top. Friction is absent. The spring constant of the spring is 4700 N/m. The piston has

Chapter 8 Physics Homework
Chapter 08, Problem 09
Your answer is correct.
A Ferris wheel rotates at an angular velocity of 0.20 rad/s. Starting from rest, it reaches its operating
speed with an average angular acceleration of 0.035 rad/s2. How long does i

Chapter 10 Homework
Chapter 10, Problem 09
Correct.
In 0.477 s, a 8.67-kg block is pulled through a distance of 3.55 m on a frictionless horizontal surface,
starting from rest. The block has a constant acceleration and is pulled by means of a horizontal s

Chapter 09 Homework
Chapter 09, Problem 08 GO
Correct.
One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the
tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way tha

Chapter 01, Problem 03
REASONING We use the facts that 1 mi = 5280 ft, 1 m = 3.281 ft, and 1 yd = 3 ft. With these facts we
construct three conversion factors: (5280 ft)/(1 mi) = 1, (1 m)/(3.281 ft) = 1, and (3 ft)/(1 yd) = 1.
SOLUTION By multiplying by t

Chapter 4&5 Quiz
Test Bank, Question 33
Which one of the following statements concerning the two "gravitational constants" G, the
universal gravitational constant, and g the magnitude of the acceleration due to gravity is true?
The values of g and G are e

Test Bank, Question 34
Correct.
What is the angle between the vectors
origin?
90
360
0
180
270
Test Bank, Question 49
Correct.
and
when they are drawn from a common
A displacement vector has a magnitude of 810 m and points at an angle of 18 above the pos

Chapter 2 Quiz
Test Bank, Question 6
Peter noticed a bug crawling along a meter stick and decided to record the bug's position in fivesecond intervals. After the bug crawled off the meter stick, Peter created the table shown.
What is the displacement of t

Chapter 3 Quiz
Test Bank, Question 24
A projectile fired from a gun has initial horizontal and vertical components of velocity equal to
30 m/s and 40 m/s, respectively.
At what angle is the projectile fired (measured with respect to the horizontal)?
60
37

Chapter 6 Homework
Chapter 06, Problem 08
Your answer is correct.
A person pulls a toboggan for a distance of 44.6 m along the snow with a rope directed 23.1
above the snow. The tension in the rope is 80.6 N. (a) How much work is done on the toboggan
by

Chapter 7 Homework
Chapter 07, Problem 04 GO
Correct.
In a performance test, each of two cars takes 8.8 s to accelerate from rest to 26 m/s. Car A has a
mass of 1384 kg, and car B has a mass of 1861 kg. Find the net average force that acts on (a) car
A an

Chapter 03 Homework
Chapter 03, Problem 09
Correct.
A skateboarder, starting from rest, rolls down a 13.0-m ramp. When she arrives at the bottom of the
ramp her speed is 7.34 m/s. (a) Determine the magnitude of her acceleration, assumed to be
constant. (b

Chapter 04, Problem 003 GO
Correct.
Two horizontal forces, and , are acting on a box, but only is shown in the drawing. can
point either to the right or to the left. The box moves only along the x axis. There is no friction
between the box and the surface

Chapter 05, Problem 12
The earth rotates once per day about an axis passing through the north and south poles, an axis
that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of
6.38 x 106 m, determine the speed and

Chapter 02, Problem 06
Your answer is correct.
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is
1.93 km. They start at the west side of the lake and head due south to begin with.(a) What is the
distance