Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Does a stationary electron in magnetic field experience Lorentz force?
- ZedCar
- · Replies 2 ·
Motion in a Plane: Projectile Hits Ground 7.5s Later
- Lydia22
- · Replies 2 ·
Find Inductor Value to Limit Current Increase in Circuit
- connor02
- · Replies 4 ·
Mechanics (Components of Acceleration)
- roam
- · Replies 1 ·
Centripetal Force Calc Question
- junkie_ball
- · Replies 2 ·
Max Angle Rod Rotates when Hit w/ Ball
- TerpFlacco
- · Replies 1 ·
Behaviour of a ping pong ball dropped in a can full of water.
- chirumu
- · Replies 1 ·
Period of a 100g mass oscillating on a spring stretched 10cm
- Akibarika
- · Replies 4 ·
AC current, conceptual question, the difference between Iaverage and Irms?
- connor02
- · Replies 2 ·
Finding initial velocity given max height and distance only
- dane811
- · Replies 1 ·
Finding the largest angle from the central maximum (single slit diffraction)
- HenryHH
- · Replies 9 ·
Force between two uniformly charged identical rods
- j0n
- · Replies 1 ·
What's the equivalent resistance of this circuit?
- lillybeans
- · Replies 2 ·
Calculating Time for Simple Harmonic Motion
- Mdhiggenz
- · Replies 1 ·
Calculating Hall Potential Difference in a Subway Third Rail
- NikitaY
- · Replies 2 ·
Magnetic field at a point due to a curved wire.
- spaceman231
- · Replies 1 ·
Dipoles and electric field expressions
- melissaisusi
- · Replies 1 ·
Which describes the interference at P? (Multiple Choice)
- McAfee
- · Replies 1 ·
Finding COM, and inertia my answers don't make sense?
- amyparker30
- · Replies 4 ·
Calculate the relative error of two complex numbers
- hermano
- · Replies 1 ·
Calculating Maximum Kinetic Energy of Ejected Electrons After Wavelength Doubles
- stacker
- · Replies 5 ·
Speed at the bottom of the track
- bcd201115
- · Replies 1 ·
Nuclear u-235 and u-238 isotope half life question
- debwaldy
- · Replies 3 ·
Why Does Spring Constant Decrease with Increased Load?
- shaun_598
- · Replies 3 ·
Question on Thermal Physics. [it feels impossibly difficult to me]
- gabloammar
- · Replies 11 ·
Calculating Repulsive Force between Two Charges at Different Distances
- domyy
- · Replies 13 ·
How to determine phase constant?
- Bigworldjust
- · Replies 7 ·
Finding Spring with kinetic friction involved
- mtsac
- · Replies 1 ·
When do I need to square values in hydraulic equations?
- domyy
- · Replies 11 ·
What Is the Coefficient of Static Friction for an Aston Martin V8 Vantage?
- Lydia22
- · Replies 23 ·
The weight of an astronaut during take off?
- shabby_goblin
- · Replies 16 ·
Path length difference for light reflecting from a thin film
- McAfee
- · Replies 3 ·
Rings of Electric Field and Gauss's Law
- flyingpig
- · Replies 19 ·
Energy and velocity problem
- shemo1993
- · Replies 8 ·
How Were the Atomic Weights Calculated in Question 50?
- ZedCar
- · Replies 5 ·
Backwards Design for Roller Coaster: Projectile Motion
- RockThis52
- · Replies 3 ·
Relativity: Rocket shoots a bullet straight down
- mitchmaniac20
- · Replies 2 ·
Force of Repulsion between two people with 1% more electrons than protons
- gsquare567
- · Replies 4 ·
Velocity, Force of Friction, and Total Energy in a System Question
- Killic
- · Replies 1 ·
A ball rolls in a bowl find the disantce it goes up to.
- weird alf
- · Replies 1 ·
Solve the Work-Energy Problem: Is There a Mistake?
- eurekameh
- · Replies 1 ·
Terminal speed of a bacterium falling through water
- dangkykodc
- · Replies 1 ·
Oscillating velocities, and energy
- bfusco
- · Replies 1 ·
What is the speed of the spaceship as measured by Joe?
- SuperNova1
- · Replies 3 ·
Light attracted to earths gravity
- theblindlead
- · Replies 1 ·
Thermal Properties - Specific heat.
- FlyingSpartan
- · Replies 1 ·
Electric Potential of a Cylinder using Poisson's Equation
- Trifis
- · Replies 4 ·
Working out experimental periodic time from a wieghted spring in s.h.m
- shaun_598
- · Replies 10 ·
Calculating Courses for Motorboat Travel with Constant Current
- jiboom
- · Replies 2 ·
Determining Direction of Force: FAQ
- Miike012
- · Replies 1 ·
Series Circuit: How Do Components Balance Power?
- MattA147
- · Replies 2 ·
Finding B field within solenoid.
- Alouette
- · Replies 1 ·
Relationship between potential and induced emf?
- Yoriko
- · Replies 3 ·
Closing a door by throwing something at it
- LocalStudent
- · Replies 4 ·
Thermal expansion of brass and iron rings
- emc92
- · Replies 2 ·
Rlc circuit with ac current source
- Mirthlinc
- · Replies 4 ·
What Factors Influence Simple Harmonic Motion in a U-Tube?
- 4evanaday
- · Replies 2 ·
Projectile motion - ball in circular motion
- finitefemmet
- · Replies 4 ·
What is the larmor radius of an electron in the inner van allen belt?
- wyosteve
- · Replies 1 ·
Appropriate arrangement of light meter circuit with LDR and resistor question:
- Caiti
- · Replies 3 ·
Electron and proton orbit directions in magnetic field
- chrissy2860
- · Replies 4 ·
Resistors in Series with a lightbulb
- sakebu
- · Replies 4 ·
What is the relationship between spring stiffness and length?
- jsmith613
- · Replies 7 ·
Parallel Plate Capacitor Conundrum
- James11111
- · Replies 5 ·
Finding the gravitational field of a rod
- jjr
- · Replies 6 ·
How Can DeMorgan's Law Be Applied to Implement (A+B).(A+C) Using NAND Gates?
- aurao2003
- · Replies 3 ·
Magnification of 1/4: Invert and Enlarge Image? True or False
- roberttt44
- · Replies 1 ·
What is the Biot-Savart Law and How is it Used to Calculate Magnetic Fields?
- connor02
- · Replies 2 ·
Solving Otto Cycle Problem: Find p2, p3, p4, T2, T3, T4, V2, V3, V4
- Dzai
- · Replies 1 ·
Find the direction of the missing vector?
- ugobroncs3343
- · Replies 1 ·
The Slope of a Normal Force vs Applied Force Graph
- reventon_703
- · Replies 5 ·
Can you not separate a scalar into x and y components?
- Sean1218
- · Replies 9 ·
Collision of Two Carts with Springs Attached
- metal_maniac
- · Replies 2 ·
Projectile Motion with displacement and time
- sotrashy
- · Replies 7 ·
What is the direction of the induced current in the loop for each situation?
- ugobroncs3343
- · Replies 1 ·
Amplitude of horizontal mass-spring system
- thatonenozz
- · Replies 1 ·
Maximum height for 80m football throw and velocity on vertical throw
- M@tthias
- · Replies 15 ·
Find the EMF in the loop as a function of time.
- ugobroncs3343
- · Replies 1 ·
Capacitors & Electric Fields and how they change relative to each other
- LastQuestion
- · Replies 4 ·
Increasing Damping Ratio: Does it Make a Circuit More/Less Damped?
- eurekameh
- · Replies 2 ·
What is the frequency of the source in the given RLC circuit?
- Misaki
- · Replies 8 ·
Energy levels and spectrum of Li++ ion vs neutral hydrogen
- Noirchat
- · Replies 1 ·
Infinite number of polarisers (Malus's law)
- Raphisonfire
- · Replies 1 ·
Air Trapped in Capillary Tubes: Understanding Pressure and Volume Changes
- chikis
- · Replies 13 ·
Why does reflecting light double the radiation force on a surface?
- RubberBandit
- · Replies 2 ·
What speed will the ball hit the ground?
- SailorMoon01
- · Replies 2 ·
Ramp, block, and elastic potential energy
- fereas
- · Replies 4 ·
How Does a Capacitor Affect the Voltage Output of a Power Source?
- jsmith613
- · Replies 18 ·
Central maximum width in single slit diffraction
- ixerr
- · Replies 5 ·
Angular acceleration and angular velocity
- John78
- · Replies 4 ·
Elementary kinetics problem - Using calculus is different result from algebra
- Femme_physics
- · Replies 13 ·
Is Negative Work Possible with a String?
- eurekameh
- · Replies 5 ·
Finding the electric field vector along the bisector
- dk321
- · Replies 5 ·
Electrostatics, conductor infinite sheets
- fluidistic
- · Replies 28 ·
Static equilibrium mass and plank problem
- Drisc0
- · Replies 4 ·
Gravitational Potential Energy and Work Energy Theorem
- hqjb
- · Replies 3 ·
Potential energy of a system (gravity)
- jjr
- · Replies 2 ·
Equilibrium of bicycle going in a circle
- serverxeon
- · Replies 7 ·
Forces of static friction question
- chiuda
- · Replies 22 ·
Lowest angle θ₁ for total internal reflection with 60° apex angle
- ParoXsitiC
- · Replies 3 ·