Ali Mazrui

Numerade Educator
Physics Tutor

Biography

I am a second-year physics major concentrating in education with a minor in science communication. It is my personal mission to promote a more scientifically literate society by changing how science is taught in the classroom. I have years of experience as a STEM tutor working both independently and as a paid employee. Additionally, I currently develop and teach environmental science lessons for the Environmental Protection Agency. In the future, I hope to teach high school physics for a number of years before moving on to work at a STEM education non-profit.

Education

Ali has not yet added their education credentials.

Educator Statistics

Numerade tutor for 5 years
4 Students Helped

Topics Covered

Mastering the Rotation of Rigid Bodies: Tips & Techniques
Explore the Fascinating Dynamics of Rotational Motion
Understanding Equilibrium and Elasticity: A Comprehensive Guide
Electric Forces and Electric Fields
Electric Potential and Capacitance
Current and Direct Current Circuits

Ali's Textbook Answer Videos

0:00
University Physics with Modern Physics

A 55-kg runner runs around the edge of a horizontal turntable mounted on a vertical, frictionless axis through its center. The runner's velocity relative to the earth has magnitude 2.8 $\mathrm{m} / \mathrm{s}$ . The turntable is rotating in the opposite direction with an angular velocity of magnitude 0.20 rad/s relative to the earth. The radius of the turntable is $3.0 \mathrm{m},$ and its moment of inertia about the axis of rotation is 80 $\mathrm{kg} \cdot \mathrm{m}^{2} .$ Find the final angular velocity of the system if the runner comes to rest relative to the turntable. (You can model the runner as a particle.)

Chapter 10: Dynamics of Rotational Motion
Ali Mazrui
12:36
Physics for the IB Diploma

A particle of mass $m$ and electric charge $q$ is suspended vertically from the end of a spring of spring constant $k$. At equilibrium, the length of the spring extends by an amount $x_{0} .$ The particle is now placed in a uniform electric field $E,$ as shown in Figure 2.21 . At the new equilibrium position, the spring is extended by an amount $2 x_{0}$
(a) Determine the sign of the charge.
(b) Determine the magnitude of the electric field strength $E$ in terms of $m, q$ and $g$ The mass is now displaced by a small amount and is released.
(c) Explain why the oscillations that take place are simple harmonic.
(d) Is the period different from the period when the field was absent?

Chapter 5: Electricity and magnetism
Section 2: Electric field and electric potential
Ali Mazrui
09:02
Physics for the IB Diploma

Two positive point charges of magnitude $Q$ and $9 Q$ are a distance $d$ apart, as shown in Figure 2.22
(a) Calculate the electric field strength at point $P$, a distance $\frac{d}{4}$ from $Q$.
A third positive point charge is placed at $\mathrm{P}$ and is then displaced a bit to the right.
(b) Explain why the charge will perform oscillations when released.
(c) Are the oscillations simple harmonic?
(d) How does your answer to (b) change if the third charge is negative?

Chapter 5: Electricity and magnetism
Section 2: Electric field and electric potential
Ali Mazrui
1