Daniel Matthias

University of Washington
Teaching Assistant

Biography

While completing my Master's degree in Physics at the University of Washington, I was a teaching assistant for the three main introductory courses: mechanics, electromagnetism, and waves. I ran the interactive tutorial sessions, screened test questions, proctored exams, and ran the study center (a place for students to bring any physics or math questions). In addition to these introductory courses, I was also the main TA for one of the higher-level Optics labs, running the weekly three hour experiments.

For my undergraduate history, I received a BS in Applied Mathematics and a BS in Engineering Physics from CU Boulder, completing these degrees with highest distinction -- Summa Cum Laude. I was the TA for one of the mixed undergraduate/graduate math courses: Fourier Series and Boundary Value Problems. In this position I graded the homework, ran a weekly help session, and assisted with the end of year experiment projects.

Education

MS Physics
University of Washington
BS Applied Mathematics
University of Colorado at Boulder
BS Engineering Physics
University of Colorado at Boulder

Educator Statistics

Numerade tutor for 6 years
84 Students Helped

Topics Covered

Mastering Motion: Achieving Efficiency Along a Straight Line
Motion in 2d or 3d
Discovering the Fundamentals: Newton's Laws of Motion Explained
Calculating Electrical Power: Resistance and EMF
Master Direct Current Circuits with Our Expert Guide
Unlocking the Power of Magnetic Fields and Forces
Discovering the Sources of Magnetic Fields: A Comprehensive Guide
Electromagnetic Induction: Understanding the Science and Applications
Understanding Inductance: A Comprehensive Guide
Understanding Alternating Current: A Comprehensive Guide
Find Your Dream Job: Discover the Best Work Opportunities
Unlock the Power of Kinetic Energy: Boost Your Efficiency Today
Unlocking the Power of Potential Energy: Discover the Benefits
Save Energy and Money with Effective Conservation Techniques

Daniel's Textbook Answer Videos

04:17
College Physics

A circular area with a radius of 6.50 $\mathrm{cm}$ lies in the $x$ -y plane. What is the magnitude of the magnetic flux through this circle due to a uniform magnetic field $B=0.230 \mathrm{T}$ that points (a) in the $+z$ direction? (b) at an angle of $53.1^{\circ}$ from the $+z$ direction? (c) in the $+y$ direction?

Chapter 21: Electromagnetic Induction
Daniel Matthias
06:21
College Physics

An open plastic soda bottle with an opening diameter of 2.5 $\mathrm{cm}$ is placed on a table. A uniform 1.75 T magnetic field directed upward and oriented $25^{\circ}$ from vertical encompasses the bottle. What is the total magnetic flux through the plastic of the soda bottle?

Chapter 21: Electromagnetic Induction
Daniel Matthias
03:05
College Physics

A coil of wire with 200 circular turns of radius 3.00 $\mathrm{cm}$ is in a uniform magnetic field along the axis of the coil. The coil has $R=40.0 \Omega$ . At what rate, in teslas per second, must the magnetic field be changing to induce a current of 0.150 $\mathrm{A}$ in the coil?

Chapter 21: Electromagnetic Induction
Daniel Matthias
03:30
College Physics

A closely wound rectangular coil of 80 turns has dimensions of 25.0 $\mathrm{cm}$ by 40.0 $\mathrm{cm}$ . The plane of the coil is rotated from a position where it makes an angle of $37.0^{\circ}$ with a magnetic field of 1.10 $\mathrm{T}$ to a position perpendicular to the field. The rotation takes 0.0600 s. What is the average emf induced in the coil?

Chapter 21: Electromagnetic Induction
Daniel Matthias
03:21
College Physics

A $30.0 \mathrm{cm} \times 60.0 \mathrm{cm} \mathrm{rec}-$ tangular circuit containing a a 15$\Omega$ resistor is perpendicular to a uniform magnetic field that starts out at 2.65 $\mathrm{T}$ and steadily decreases at 0.25 $\mathrm{T} / \mathrm{s}$ . (See Figure $21.48 . )$ While this field is changing, what does the ammeter read?

Chapter 21: Electromagnetic Induction
Daniel Matthias
03:54
College Physics

A flat, square coil with 15 turns has sides of length 0.120 $\mathrm{m}$ . The coil rotates in a magnetic field of 0.0250 $\mathrm{T}$ (a) What is the angular velocity of the coil if the maximum emf produced is 20.0 $\mathrm{mV}^{\prime} ?$ (Hint: Look at the motional emf induced across the ends of the segments of the coil.) (b) What is the average emf at this angular velocity?

Chapter 21: Electromagnetic Induction
Daniel Matthias
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