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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Why won't capacitor charge in faraday flashlight circuit?
- psionicarrow
- · Replies 3 ·
Mass on spring in a falling box
- Myvalq
- · Replies 9 ·
Connecting two Carnot engions-
- C.E
- · Replies 15 ·
How Does Heating Affect the Properties of Nitrogen Gas?
- C.E
- · Replies 11 ·
What is the tension in the string connecting a cork and a cube in water?
- college boy19
- · Replies 7 ·
Circuit with 2 loops, find the current in one of the loops
- jenzao
- · Replies 2 ·
Astronaut thrown toolkit to return to shuttle in 4 minutes
- ppl k1ll3r
- · Replies 4 ·
Can a Square Coil Fit into a Round Solenoid?
- nb121307
- · Replies 1 ·
Finding percent uncertainty for 1.57 m² measurement
- soccerdude010
- · Replies 1 ·
Thermal conductivity of rod 1000x too low in lab experiment
- earlofwessex
- · Replies 1 ·
Finding electron position when it stops: x = 18te^-t
- brusier
- · Replies 13 ·
Beam of particles focused by magnetic field
- phyzmatix
- · Replies 16 ·
What are the differences between Kinematics and Dynamics?
- chrisyuen
- · Replies 2 ·
How do I convert volts to electron volts?
- lha08
- · Replies 7 ·
Biot-Savart law: why integrate dB times a/r instead of a component?
- mmmboh
- · Replies 2 ·
Force and motion problems with walls, inclines, and friction
- tinab16
- · Replies 5 ·
Finding the Work Done in a Monatomic Ideal Gas Process
- Poulsen8r
- · Replies 2 ·
Experimental Value of Planck's Constant?
- Nex3vent
- · Replies 12 ·
Simple Capacitance Problem: Teflon-Filled Parallel-Plate Capacitor Calculation
- physics213
- · Replies 2 ·
Quantum Physics: Calculate Highest X-Ray Freq of 8.00E+04 eV Electrons
- miley06
- · Replies 1 ·
I think i did this electric potential problem correctly but
- punktux
- · Replies 1 ·
Finding Time and Velocity for a Package Dropped from a Hot Air Balloon
- brusier
- · Replies 7 ·
Minimum Speed for Puck to Reach Top of Frictionless Ramp?
- talaroue
- · Replies 5 ·
Bernoulli Equation: Finding t_fall Expression
- Saladsamurai
- · Replies 2 ·
How to apply momentum equation to wedge with angle θ
- Saladsamurai
- · Replies 12 ·
What Force Does the 4 kg Block Exert on the 7 kg Block?
- PrideofPhilly
- · Replies 5 ·
Space Station-Artificial Gravity
- ariol
- · Replies 4 ·
Speed of a bullet in ballistic spring system
- brunettegurl
- · Replies 5 ·
How much is the current flowing in the transmission line?
- golriz
- · Replies 5 ·
Electric energy - potential difference problem
- physics213
- · Replies 2 ·
Compression of spring wrt speed
- brunettegurl
- · Replies 5 ·
Energy Loss in a Collision: Calculating Speed and Percentage
- brunettegurl
- · Replies 2 ·
Ball rolling down a segment then up a parabolic segment
- talaroue
- · Replies 4 ·
How Can You Measure Radius Distortion in a Shattered Wineglass Using Resonance?
- djandrey_m
- · Replies 2 ·
Rectangle tipping point on ramp
- xkirkx
- · Replies 4 ·
Find Antinode Closest to x=0.25m in Standing Wave
- lha08
- · Replies 3 ·
Newton's laws and incline surfaces
- naada
- · Replies 3 ·
Parallel plate capacitor and insulating material
- tarellan
- · Replies 1 ·
Moment of Inertia of a butterfly-shaped yoyo
- waughcraft
- · Replies 3 ·
Scattering collisions/lorentz-invariant quantity
- wyse
- · Replies 2 ·
How Does dV/dt Vary in a Charging Capacitor?
- tarellan
- · Replies 1 ·
Inelastic Collision, only masses known
- BATBLady
- · Replies 16 ·
Puddy hitting a mass attached to spring
- xkirkx
- · Replies 2 ·
3 blocks on a frictionless surface
- talaroue
- · Replies 4 ·
Moment of inertia of triangle about tip formula
- RussellJ
- · Replies 1 ·
What Magnetic Field Strength Keeps an Electron on a Straight Path?
- 22steve
- · Replies 4 ·
Max Displacement of Particle at x=0.5cm
- lha08
- · Replies 7 ·
Light Fundamentals (3) problems
- whitehorsey
- · Replies 2 ·
Bound charges - Question about the maths. Did I calculate this correctly?
- phyzmatix
- · Replies 12 ·
Magnetic field from two wires and magnitude
- tarellan
- · Replies 1 ·
How Does a Semicircular Wire Affect Magnetic Field Direction and Magnitude?
- tarellan
- · Replies 1 ·
What Do Wave Number and Phase Constant Mean in Wave Equations?
- lha08
- · Replies 1 ·
Magnetic Fields and wires question
- rss14
- · Replies 3 ·
Wavelength of 4.00 p to 4.00 s Transition in Sodium
- latinap707
- · Replies 2 ·
What Is the Magnitude of B for a Current-Carrying Wire in a Magnetic Field?
- Ry122
- · Replies 1 ·
Acceleration on a curve [kinematics]
- boogaaaaa
- · Replies 6 ·
Average Speed and Free-Falling Objects
- Soaring Crane
- · Replies 3 ·
Truck brakes and the distance they travel
- brunettegurl
- · Replies 9 ·
Magnetic field and direction question.
- rss14
- · Replies 4 ·
Charged Spheres +quadratic equation
- Shatzkinator
- · Replies 7 ·
How Does Charge Redistribution Affect Forces in a Triangular Sphere System?
- Shatzkinator
- · Replies 1 ·
Newton's Third Law - Using pulleys and slopes
- tastypotato
- · Replies 1 ·
Capacitor and diode curcit for ac to dc voltage
- nokia8650
- · Replies 1 ·
What is the relationship between rotational inertia and the inertia tensor?
- chrisyuen
- · Replies 2 ·
What Is the Correct Way to Calculate Unbalanced Force?
- sothis
- · Replies 1 ·
How Far Does a Particle Travel in One Period of SHM?
- JenMel
- · Replies 1 ·
Force on a sphere in a constant external electric field
- captain.joco
- · Replies 5 ·
How do I draw a graph for a progressive wave?
- Vaseline
- · Replies 1 ·
Why Does the Ramp Exert Total Force mg Instead of mgcos30 on the Mass?
- Lavace
- · Replies 2 ·
How Is the Mass of a Charged Particle Determined in an Electric Field?
- adca14
- · Replies 2 ·
Photoelectric effect and work function
- stickplot
- · Replies 5 ·
When are displacement and velocity positive or negative?
- lha08
- · Replies 12 ·
Magnetic Force Between Wires Problem #2
- medgirl
- · Replies 1 ·
Force Between Two Wires (Magnetism)
- medgirl
- · Replies 1 ·
DC Circuit. Kirchoff's 2nd law.
- Gregg
- · Replies 1 ·
Boy Scout Problem Homework: Solve Kinematics Equations
- abhikesbhat
- · Replies 6 ·
Newton's 3rd law- inclined plane
- mcryder16
- · Replies 1 ·
How Does Newton's Third Law Apply to Tension in a Dog Sled Scenario?
- mcryder16
- · Replies 1 ·
Solve Newton's 3rd Law Homework: Mass of Block on Left
- mcryder16
- · Replies 1 ·
Resolving Forces in a Hanging Bag of Sand
- edsys89
- · Replies 2 ·
Physics Midterm Explanation Kirkoff Rule
- Nimmy
- · Replies 1 ·
Why is the change in electric potential leading to a negative work value?
- Ry122
- · Replies 4 ·
What is the correct solution for the projectile question in yesterday's exam?
- Lord Dark
- · Replies 6 ·
How Much Work is Done by Gravity When Lowering a Piano with Two Ropes?
- talaroue
- · Replies 8 ·
Finding surface gravity on asteroid Ceres with only the planet's mass
- 7m-84
- · Replies 5 ·
Coefficient of Friction Needed?
- haganjp
- · Replies 3 ·
How Does a Uniform Electric Field Affect a Charged Particle in a Magnetic Field?
- 037810
- · Replies 15 ·
Why add 32 when converting between Celsius and Fahrenheit
- HussanAli
- · Replies 3 ·
Finding Tension in a Block-Pulley System
- frostking
- · Replies 7 ·
Why Does the Internal Resistance Graph Have a Negative Gradient?
- Vaseline
- · Replies 2 ·
Resistive force from bullet penetrating wood
- Jjolly65
- · Replies 3 ·
Calculating Work Done by Gravity on a Moved Book
- talaroue
- · Replies 3 ·
How can the tension in the cord be calculated using conservation of energy?
- joemama69
- · Replies 15 ·
Static equilibrium of a ladder and simple pendulum period on another planet
- gosperion
- · Replies 1 ·
Calculating work done by friction without mass
- kinza
- · Replies 10 ·
What is the Electric Field at the Center of a Square with Four Charges?
- kman12
- · Replies 5 ·
Electromagnetic wave striking a small pocket mirror
- Minihoudini
- · Replies 3 ·
Voltmeter and ammeter readings in circuit with V=14.74 and I=0.72A
- brentwoodbc
- · Replies 5 ·
What is the Q value for lead in the Rutherford Experiment?
- the whizz
- · Replies 1 ·
What Determines the Repulsion Between Two Positively Charged Spheres?
- Ry122
- · Replies 1 ·