Exercise 1: Data Interpretation
Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many
living organism requires oxygen to survive, it is a necessary component of water
systems such as streams, lakes and rivers in order to support
Pre-Lab Questions
1. What should you always wear to protect your eyes when you are in the laboratory?
Safety Goggles with peripheral side protection.
2. What precautions should be taken when working with electricity?
Always use caution and avoid working n
Pre-Lab Questions
1. What is the acceleration of a ball that is vertically tossed up when it reaches its
maximum height?
2. If you drop a ball, and then one second later drop a ball identical in mass, size and
shape, what happens to the distance between t
PHSC 1401 Unit Conversions Practice
2.54 cm = 1 in
60 s = 1 min
12 in = 1 f
1 km = 0.61 mi
60 min = 1 hr
24 hr = 1 day
5280 f = 1 mi
365.25 days = 1 yr
1 mL = 1 cm3
Complete the following unit conversions.
1. $5.60 = _ pennies = _ nickels = _quarters
2. 4
Chapter 9
Gravity
Practice Problems
Gravity was first discovered by
a. Aristotle.
b. Galileo.
c. Isaac Newton.
d. early humans.
Gravity was first discovered by
a. Aristotle.
b. Galileo.
c. Isaac Newton.
d. early humans.
Explanation: Newton did not discove
Practice Exam Hints
3. This problem asks for the magnitude of the force (i.e. the absolute value), so your
answer should be positive.
5. The way to think about this problem is to realize that all of the work done on the sled
(not work against friction) we
PHSC 1401 Session 10 HW Example Problems & HW Hints
The mass of Neptune is 1.024 * 1026 kg, and the radius of Neptune is 24,764 km.
The mass of the sun is 1.989 * 1030 kg, and the radius of the sun is 695,500 km.
1. (1A) What is the weight in Newtons of a
PHSC 1401 - Formula Sheet (Sessions 1-2)
1
Kinematics
Denitions of velocity and acceleration:
vaverage =
4position
4time
=
4x
4t
=
xf xi
tf ti
aaverage =
4velocity
4time
=
4v
4t
=
vf vi
tf ti
For ti = 0 (i.e. the clock starts at 0 seconds), we can rename
PHSC 1401 - Gravity Homework Problems
The mass of Jupiter is 1.898 * 1027kg, and the radius of Jupiter is 69,911 km.
The mass of the sun is 1.989 * 1030, and the radius of the sun is 695,500 km.
1. (1A) What is the weight in Newtons of a 90 kg man at the