Farhanul Hasan

Reed College
Graduate Assistant

Biography

Teaching Assistant for undergraduate astronomy course, including Introduction to astronomy (ASTRO 110) and The Planets (ASTRO 105)

Education

BA Physics
Reed College
Phd Astronomy
New Mexico State University

Educator Statistics

Numerade tutor for 7 years
1147 Students Helped

Topics Covered

Exploring the Fascinating World of Mechanical Waves
Understanding Electromagnetic Waves: A Comprehensive Guide
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
Exploring the Fascinating World of Quantum Physics
Master the Fundamentals of Physics: Learn Physics Basics
Mastering Motion: Achieving Efficiency Along a Straight Line
Motion in 2d or 3d
Discovering the Fundamentals: Newton's Laws of Motion Explained
Mastering Newton's Laws: Tips for Applying Them Effectively
Understanding Reflection and Refraction of Light: A Comprehensive Guide
Find Your Dream Job: Discover the Best Work Opportunities
Understanding Moment Impulse and Collisions for Better Physics
Explore the Fascinating World of Wave Optics - Unleash Its Potential
Electromagnetic Induction: Understanding the Science and Applications
Understanding Inductance: A Comprehensive Guide
Calculating Electrical Power: Resistance and EMF
Unlocking the Power of Magnetic Fields and Forces
Discovering the Sources of Magnetic Fields: A Comprehensive Guide
Exploring the Wonders of Atomic Physics: A Comprehensive Guide
Discover the Fascinating World of Nuclear Physics
Discover the Fascinating World of Particle Physics Today
Understanding Electric Charge and Field: A Comprehensive Guide
Unlocking the Power of Electric Potential: Exploring its Benefits
Understanding Temperature and Heat: A Comprehensive Guide
Discover the Power of Gravitation: Exploring the Science Behind It
Capacitance and Dielectrics: Understanding the Basics
Unlocking the Secrets of Thermal Properties: Understanding Matter
Understanding the Second Law of Thermodynamics: Key Principles

Farhanul's Textbook Answer Videos

03:37
University Physics with Modern Physics

In a physics laboratory experiment, a coil with 200 turns enclosing an area of 12 cm$^2$ is rotated in 0.040 s from a position where its plane is perpendicular to the earth's magnetic field to a position where its plane is parallel to the field. The earth's magnetic field at the lab location is 6.0 $\times$ 10$^{-5}$ T. (a) What is the total magnetic flux through the coil before it is rotated? After it is rotated? (b) What is the average emf induced in the coil?

Chapter 29: Electromagnetic Induction
Section 2: Faraday's Law
Farhanul Hasan
01:19
University Physics with Modern Physics

A closely wound search coil (see Exercise 29.3) has an area of 3.20 cm$^2$, 120 turns, and a resistance of 60.0 $\Omega$. It is connected to a charge-measuring instrument whose resistance is 45.0 $\Omega$. When the coil is rotated quickly from a position parallel to a uniform magnetic field to a position perpendicular to the field, the instrument indicates a charge of 3.56 $\times$ 10$^{-5}$ C. What is the magnitude of the field?

Chapter 29: Electromagnetic Induction
Section 2: Faraday's Law
Farhanul Hasan
05:02
University Physics with Modern Physics

A coil 4.00 cm in radius, containing 500 turns, is placed in a uniform magnetic field that varies with time according to $B =$ (0.0120 T/s)$t$ + (3.00 $\times$ 10$^{-5}$ T/s$^4)t^4$. The coil is connected to a 600-$\Omega$ resistor, and its plane is perpendicular to the magnetic field. You can ignore the resistance of the coil. (a) Find the magnitude of the induced emf in the coil as a function of time. (b) What is the current in the resistor at time $t =$ 5.00 s?

Chapter 29: Electromagnetic Induction
Section 2: Faraday's Law
Farhanul Hasan
01:11
University Physics with Modern 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 $1.70 \mathrm{~T}$ to a position perpendicular to the field. The rotation takes $0.0600 \mathrm{~s}$. What is the average emf induced in the coil?

Chapter 29: Electromagnetic Induction
Section 2: Faraday's Law
Farhanul Hasan
01:44
University Physics with Modern Physics

In many magnetic resonance imaging (MRI) systems, the magnetic field is produced by a superconducting magnet that must be kept cooled below the superconducting transition temperature. If the cryogenic cooling system fails, the magnet coils may lose their superconductivity and the strength of the magnetic field will rapidly decrease, or $quench$. The dissipation of energy as heat in the now-nonsuperconducting magnet coils can cause a rapid boil-off of the cryogenic liquid (usually liquid helium) that is used for cooling. Consider a superconducting MRI magnet for which the magnetic field decreases from 8.0 T to nearly 0 in 20 s. What is the average emf induced in a circular wedding ring of diameter 2.2 cm if the ring is at the center of the MRI magnet coils and the original magnetic field is perpendicular to the plane that is encircled by the ring?

Chapter 29: Electromagnetic Induction
Section 2: Faraday's Law
Farhanul Hasan
00:51
University Physics with Modern Physics

A flat, rectangular coil of dimensions $l$ and $w$ is pulled with uniform speed $v$ through a uniform magnetic field $B$ with the plane of its area perpendicular to the field ($\textbf{Fig. E29.14}$). (a) Find the emf induced in this coil. (b) If the speed and magnetic field are both tripled, what is the induced emf?

Chapter 29: Electromagnetic Induction
Section 2: Faraday's Law
Farhanul Hasan
1 2 3 4 5 ... 190

Farhanul's Quick Ask Videos

01:28
Physics 101 Mechanics

Consider an object having an angular velocity of 2.00 rad/s and the moment of inertia 7.48 kg m². What is the angular velocity of the object if the moment of inertia changes to 2.40 kg m²?

Farhanul Hasan
02:49
Physics 101 Mechanics

Farhanul Hasan
1