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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Mass point sliding on a rotating line (Lagrangian)
- JulienB
- · Replies 15 ·
Process which electricity is generated (Nuclear power)
- Radic S
- · Replies 3 ·
Why is the electric field negative in this problem?
- cros0
- · Replies 2 ·
How does a swing demonstrate acceleration changes in both speed and direction?
- ARussell1
- · Replies 2 ·
3 masses on an incline (connected)
- Ab17
- · Replies 3 ·
Force applied on cable attached to car and tree
- Ab17
- · Replies 4 ·
How Do You Calculate the Net Force in Physics Problems?
- Kofyebs
- · Replies 3 ·
What's Wrong with My Biot-Savart Law Calculation?
- Aroldo
- · Replies 2 ·
How can we prove that sina'=nsinb using the given information and figure?
- annalian
- · Replies 3 ·
At what distance from the lens is the image
- annalian
- · Replies 2 ·
How to find a percentages in kinetic energy
- Kofyebs
- · Replies 10 ·
Special Relativity of Train Problem
- i_hate_math
- · Replies 8 ·
The magnitude of the electric field
- flex bro
- · Replies 3 ·
Projectile motion motorcycle jump
- nothingsus
- · Replies 2 ·
Solve Ideal Gas Problem: Gamma = 1.4, VA=4.33m^3, PA
- James Ray
- · Replies 2 ·
The distance between the incident point and the refracted point
- zade70
- · Replies 2 ·
Method of Symmetry for Equivalent Resistances
- Swapnil Das
- · Replies 6 ·
How to Calculate Velocity in Pipe Using Friction Factor and Kinematic Viscosity?
- foo9008
- · Replies 6 ·
Calculate where the top of the atmosphere would be.
- Littlemac
- · Replies 1 ·
Potential and intensity of magnetic field
- ciso112
- · Replies 5 ·
Ray entering prism AC won't exit through surface AB at what incidence angle?
- zade70
- · Replies 11 ·
Finding fulcrum force when lifting 30 kg mass with a lever
- brake4country
- · Replies 11 ·
Electric resistance in the truncated rotating cone
- ciso112
- · Replies 25 ·
Potential of Concentric Spherical Insulator and Conductor --
- scef333
- · Replies 8 ·
Does object approach mirror reflection at twice the approach speed?
- annalian
- · Replies 5 ·
Rock sliding up a roof at 37° using Newton's laws
- Ab17
- · Replies 12 ·
Where is the electric field zero between two point charges?
- Ch3m_
- · Replies 1 ·
Are the rays parallel after they come out of the prism?
- zade70
- · Replies 3 ·
Coriolis Force Across the Equator
- DarkMatter5
- · Replies 10 ·
When the incidence angle is equal to the angle of refraction
- zade70
- · Replies 5 ·
Light source between parallel mirrors 20 cm apart, 5 cm from one mirror
- annalian
- · Replies 3 ·
How to Calculate Work Done by a Gas in Thermodynamics?
- vijayramakrishnan
- · Replies 9 ·
Work done on ideal monatomic gas in adiabatic process
- James Ray
- · Replies 3 ·
How Do You Calculate Head Loss in a Venturi Meter Using Bernoulli's Equation?
- foo9008
- · Replies 3 ·
Question for the resistance of the wire
- bckcookie
- · Replies 4 ·
Exploring Fleming's Right Hand Rule for EMF in a Straight Wire
- ahmed963u2
- · Replies 4 ·
(Snell's Law) How do I find θi and θr?
- Zoey
- · Replies 9 ·
Why is acceleration 0.020 m/s² instead of 0.20 m/s² in this problem?
- Sara077
- · Replies 3 ·
Why do certain wavelengths have higher intensity in light reflected from a glass plate?
- prehisto
- · Replies 4 ·
Pendulum on a horizontal spring (Lagrangian)
- JulienB
- · Replies 4 ·
Biking up a hill in different gears
- ollie_craw
- · Replies 18 ·
Can I apply Hermitian perturbation theory to a non-Hermitian perturbed matrix?
- Gwyn-Gwyn
- · Replies 1 ·
Two masses on each end of a spring lying horizontally
- James Ray
- · Replies 2 ·
Time taken for a mass on the end of a spring to hit a wall
- James Ray
- · Replies 3 ·
Finding the direction of vector C = A - B
- Sall1230
- · Replies 2 ·
How Does Air Pressure Affect Fluid Levels in a U-Shaped Tube?
- faradayscat
- · Replies 5 ·
Pendulum pulse vertical flick period
- James Ray
- · Replies 1 ·
Pendulum periods on Earth and another planet with different radii
- James Ray
- · Replies 6 ·
When you heat a sheet, does it expand or compress?
- Miguel Velasquez
- · Replies 7 ·
3 kg block sliding 2 m down 30° incline in 1.50 s
- Ab17
- · Replies 6 ·
What is the tension in the rope?
- ItsAnshumaan
- · Replies 16 ·
How does pipe thickness affect head loss at entrance?
- foo9008
- · Replies 7 ·
Circular motion -- Car on a circular track
- Nikstykal
- · Replies 10 ·
Right-hand rule giving wrong force direction on current-carrying wire
- righthandbusy
- · Replies 4 ·
Find the electrostatic potential above loop of charge Q?
- Poirot
- · Replies 3 ·
Electrical potential of a conducting spherical shell
- JulienB
- · Replies 11 ·
Simple harmonic motion solved for time
- MaxBicknell
- · Replies 5 ·
What Determines the Thrust of a Lorry Starting from Rest?
- fleur
- · Replies 3 ·
Why doesn't weight work perpendicular?
- n124122
- · Replies 12 ·
Femur Compression/Young's Modulus
- Student in Need
- · Replies 7 ·
How Do You Calculate Acceleration in a Limacon-Shaped Path?
- Nikstykal
- · Replies 5 ·
Energy loss when two charged capacitors are connected in parallel
- Shiuanchiam
- · Replies 9 ·
Calculating the electric potential at the midpoint
- rrosa522
- · Replies 3 ·
Rotational kinetic energy of a rod on a vertical spring
- Tissue
- · Replies 7 ·
Vertical Force of Each Truck Wheel: 68670N
- fleur
- · Replies 5 ·
Principle of a positive corona discharge?
- Milchy
- · Replies 1 ·
The size and direction of magnetic induction and force
- darkprior
- · Replies 4 ·
Finding equivalent capacitance between two points in a network
- WeiLoong
- · Replies 11 ·
Pressure-related problem with Mercury and Water in a U-tube
- horsedeg
- · Replies 18 ·
Motorist decelerating to avoid radar at 120 km/h in 80 km/h zone
- david_duhig
- · Replies 5 ·
Electric force on charge Q from two equal charges
- Amaliahch
- · Replies 8 ·
Determining the Resistance of an Electric Blanket
- Johny Prime
- · Replies 2 ·
The value of electric current on a sinking conductor
- darkprior
- · Replies 5 ·
Kinematics and dynamic circular motion of conical pendulum
- diazdaiz
- · Replies 2 ·
Determining the focal length of a compound lens
- Alex_Neof
- · Replies 2 ·
What Is the Distance Between Two Images Formed by a Lens and Mirror Combination?
- terryds
- · Replies 9 ·
Capacitor and inductor in parallel
- Titan97
- · Replies 7 ·
Show that force is proportional to gradient of PE graph
- Janiceleong26
- · Replies 13 ·
Basic electric force/field question I can't get
- Kuzon
- · Replies 13 ·
Expression y(x,t) for sinusoidal wave traveling along a rope
- horsedeg
- · Replies 6 ·
Magnitude and DIRECTION of electric field of a square.
- johnknee
- · Replies 1 ·
Ball on String, Calc V with mass, answer by "accident?"
- satsrule
- · Replies 11 ·
HGL and EGL at gradual contract region
- foo9008
- · Replies 6 ·
What is the tension supporting one ball?
- Joshua May
- · Replies 2 ·
Design a catapult with adjustable angle but constant launch velocity
- DeathEater
- · Replies 1 ·
Finding the velocity of an inclined mass
- Sall1230
- · Replies 3 ·
How to interpret the equation of position with constant acceleration?
- Matt2411
- · Replies 11 ·
Heat Extracted and Delivered to Reservoirs in a Heat Engine
- Willfrid Somogyi
- · Replies 7 ·
What is the Frequency of This Simple Harmonic Motion?
- ryanuser
- · Replies 3 ·
Moment Question / inclined triangle
- Sabeshan Ratneswaran
- · Replies 18 ·
Using corrcted value for Hardy Cross method?
- foo9008
- · Replies 4 ·
Solving the Hardy Cross Problem
- foo9008
- · Replies 3 ·
What value should be used for junction CA in the Hardy Cross method?
- foo9008
- · Replies 1 ·
Bound charge and field from dipole density in a sphere
- Guy ML
- · Replies 1 ·
Ratio for the dimples in a golf ball
- UndyingCactus
- · Replies 2 ·
Struggling with the rules behind electricity
- Kuzon
- · Replies 3 ·
How can I derive a formula for change in B field strength?
- RobertColman
- · Replies 7 ·
Calculate the temperature for this reaction to occur
- Janiceleong26
- · Replies 12 ·
Calculating Line of Sight and Obstruction in Restaurant Redesign
- swopidopi
- · Replies 4 ·
Angular Momentum: Problem w/Calculating MoI at 100cm
- EngrStud
- · Replies 1 ·