CW

Christopher Watts

Numerade Educator
Tutor

Biography

I graduated college with a Bachelor degree in Civil Engineering and a Minor in Mathematics. I am a licensed professional engineer in Austin, Texas where I live with my wife and work at a traffic engineering firm. I have both academic and professional experience in all things engineering and am excited to share this experience with you!

Education

Christopher has not yet added their education credentials.

Educator Statistics

Numerade tutor for 4 years
40 Students Helped

Topics Covered

Master the Fundamentals of Physics: Learn Physics Basics

Christopher's Textbook Answer Videos

1

Christopher's Quick Ask Videos

00:58
Precalculus

The population of a fish farm in tt years is modeled by the equation P(t) = 10001 + 9e^(-0.8t). Rounded to the nearest fish, what is the initial population?
03:46
Physics 101 Mechanics

Baseball Trajectory Problem: a. A baseball is hit by Mickey
Mantle, a New York Yankees baseball team member, at a velocity of
90 miles/hour at an unknown angle from the horizontal. The initial
elevation of the ball is 3.0 feet above home plate (home plate
coordinates: x=0, y=0) in Yankee Stadium in New York City. The
distance from home plate to the outfield wall is 408 feet at center
field. The height of the outfield wall is approximately 8 feet (It
varies slightly across the outfield). What is the exact angle
(measured from the horizontal), in degrees, that the ball must
travel to just go over the outfield wall? Assume the outfield wall
has a negligible width. Note that several analytical, experimental,
and computational methods exist for solving this particular
problem. b. After you have obtained the correct angle, prove that
the angle you calculated is correct using the techniques previously
outlined in class., and calculate the exact time of travel to the
wall from home plate.
03:03
Physics 101 Mechanics

1) A cannon fires a cannon ball at a fort. The cannon’s barrel
makes an angle of 30º with respect to the horizontal. The ball
leaves the end of the cannon’s barrel at a height of 1.5m above the
ground with a speed of 100m/s (along the barrel). The cannon ball
ends its flight by striking the wall of the fort 10m above the
ground. (You can assume that the cannon ball has already passed its
maximum height before hitting the wall.)
a) How far is the wall from the cannon?
b) Assuming the ground is flat, how long is the cannon ball in
the air?
02:32
Physics 101 Mechanics

Calculate. A rectangular solid measures 1.0 m by 5.6 cm by 2.1 dm. Express its volume in cubic meters.
Calculate. Nitrogen gas is a major component of air. A sample of nitrogen gas in a glass bulb weighs 243 mg. What is the mass in SI base units of mass (kilograms)?
Calculate. The world's oceans contain approximately 1.35 x 10^9 km^3 of water. What is this volume in liters?
Calculate. A material will float on the surface of a liquid if the material has a density less than that of the liquid. Given that the density of water is approximately 1.0 g/mL, will a block of the material having a volume of 1.2 x 10^4 in^3 and weighing 350 lb float or sink when placed in a reservoir of water? (1 pound = 0.4536 kg)
03:22
Geometry

Applications of Special Right Triangles

Find the solution to each problem. Indicate through your work or explanation the reasoning that produced your answer.

1) Find the perimeter and the area of the square below which has a diagonal of 32 inches.

32 in.

2) Calculate the perimeter of the trapezoid.

45°

3) An unmanned aerial vehicle is equipped with a camera to help monitor hard to reach areas of a national forest for forest fires, trespassers and other security issues. The field of view of the camera is 60° and is represented by ∠CBE in the diagram below. If the camera takes a picture directly over point D as shown, what is the width of the forest floor that will be captured in the picture when the altitude of the UAV is 240 meters?
02:52
Precalculus

When running a 100 meter race Salvador reaches his maximum speed 6 seconds after the race started when he is 30 meters from the starting line. Salvador runs at this max speed for the rest of the race. Salvador is 65 meters from the starting line 11 seconds after the start of the race.
a. What is Salvador's max speed?
b. Suppose Salvador runs for an additional z seconds after reaching his max speed.
i. How far will Salvador travel during those additional z seconds?
ii. What is Salvador's distance from the starting line 6 + z seconds after the race started?
c. What is Salvador's distance from the starting line x seconds after the race started (provided x ≥ 6)?
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