John-Paul Mann

University of Arizona
Graduate Students

Biography

I'm currently a graduate student getting my PhD in Astrophysics at the University of Arizona. I am one final test away from having my masters degree. Every semester I am a Teaching Assistant for different lab or discussion classes. I also taught an electromagnetism class over summer semester. In addition to these I am a private tutor that often works with high school or early college students in physics and math.

Education

Phd Physics
University of Arizona
BS Physics
Central Washington University
BS Mathematics
Central Washington University

Educator Statistics

Numerade tutor for 7 years
15 Students Helped

Topics Covered

Exploring the Wonders of Atomic Physics: A Comprehensive Guide
Discover the Fascinating World of Nuclear Physics
Discover the Fascinating World of Particle Physics Today
Unlocking the Power of Electric Potential: Exploring its Benefits
Capacitance and Dielectrics: Understanding the Basics
Unlocking the Secrets of Thermal Properties: Understanding Matter

John-Paul's Textbook Answer Videos

03:48
University Physics with Modern Physics

A small particle has charge $-5.00$ $\mu$C and mass $2.00 \times 10^{-4}$ kg. It moves from point $A$, where the electric potential is $V_A = +$200 V, to point $B$, where the electric potential is $V_B = +$800 V. The electric force is the only force acting on the particle. The particle has speed 5.00 m$/$s at point $A$. What is its speed at point $B$? Is it moving faster or slower at $B$ than at $A$? Explain.

Chapter 23: Electric Potential
Section 2: Electric Potential
John-Paul Mann
06:26
University Physics with Modern Physics

A charge of 28.0 nC is placed in a uniform electric field that is directed vertically upward and has a magnitude of 4.00 $\times 10^4$ V$/$m. What work is done by the electric force when the charge moves (a) 0.450 m to the right; (b) 0.670 m upward; (c) 2.60 m at an angle of 45.0$^\circ$ downward from the horizontal?

Chapter 23: Electric Potential
Section 2: Electric Potential
John-Paul Mann
07:33
University Physics with Modern Physics

Point charges $q_1 = +$2.00 $\mu$C and $q_2 = -$2.00 $\mu$C are placed at adjacent corners of a square for which the length of each side is 3.00 cm. Point $a$ is at the center of the square, and point $b$ is at the empty corner closest to $q_2$ . Take the electric potential to be zero at a distance far from both charges. (a) What is the electric potential at point a due to $q_1$ and $q_2$? (b) What is the electric potential at point $b$? (c) A point charge $q_3 = -$5.00 $\mu$C moves from point $a$ to point $b$. How much work is done on $q_3$ by the electric forces exerted by $q_1$ and $q_2$? Is this work positive or negative?

Chapter 23: Electric Potential
Section 2: Electric Potential
John-Paul Mann
05:12
University Physics with Modern Physics

A uniform electric field has magnitude $E$ and is directed in the negative $x$-direction. The potential difference between point $a$ (at $x =$ 0.60 m) and point $b$ (at $x =$ 0.90 m) is 240 V. (a) Which point, $a$ or $b$, is at the higher potential? (b) Calculate the value of $E$. (c) A negative point charge $q = -$0.200 $\mu$C is moved from $b$ to $a$. Calculate the work done on the point charge by the electric field.

Chapter 23: Electric Potential
Section 2: Electric Potential
John-Paul Mann
12:26
University Physics with Modern Physics

A thin spherical shell with radius $R_1 =$ 3.00 cm is concentric with a larger thin spherical shell with radius $R_2 =$ 5.00 cm. Both shells are made of insulating material. The smaller shell has charge $q_1 = +$6.00 nC distributed uniformly over its surface, and the larger shell has charge $q_2 = -$9.00 nC distributed uniformly over its surface. Take the electric potential to be zero at an infinite distance from both shells. (a) What is the electric potential due to the two shells at the following distance from their common center: (i) $r =$ 0; (ii) $r =$ 4.00 cm; (iii) $r =$ 6.00 cm? (b) What is the magnitude of the potential difference between the surfaces of the two shells? Which shell is at higher potential: the inner shell or the outer shell?

Chapter 23: Electric Potential
Section 3: Calculating Electric Potential
John-Paul Mann
06:57
University Physics with Modern Physics

A uniformly charged, thin ring has radius 15.0 cm and total charge $+$24.0 nC. An electron is placed on the ring's axis a distance 30.0 cm from the center of the ring and is constrained to stay on the axis of the ring. The electron is then released from rest. (a) Describe the subsequent motion of the electron. (b) Find the speed of the electron when it reaches the center of the ring.

Chapter 23: Electric Potential
Section 3: Calculating Electric Potential
John-Paul Mann
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