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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Convex lens with 16cm focal length: object distance for 2× magnification
- vickilcw
- · Replies 2 ·
Potential Difference Between Two Points: 100J of Work Done
- raviem
- · Replies 2 ·
Effective heat andThermometers / Rate heat is lost
- paperdoll
- · Replies 9 ·
What Is the Resistance of Each Wire in a Series Circuit at Constant Temperature?
- stardust289
- · Replies 4 ·
Friction and Rolling Analytical Question
- modulus
- · Replies 5 ·
Pressure gauge submerged in a fluid column
- TyErd
- · Replies 3 ·
How Can Initial Distance Affect Time Calculations in Spacetime Problems?
- athrun200
- · Replies 12 ·
Ice needed to cool 250g water from 40°C to 35°C
- macmac410
- · Replies 1 ·
Does air behave like an ideal gas
- TyErd
- · Replies 1 ·
Is the Angle Depiction in the Rainbow Diagram Accurate?
- whyonlyme
- · Replies 5 ·
Particle explosion with relative velocity between fragments
- skunk
- · Replies 4 ·
How do motors work and what is counter emf?
- i_m_mimi
- · Replies 6 ·
What is the difference between average speed and average velocity?
- physkid1
- · Replies 5 ·
Work done by electromagnetic force
- scarlets99
- · Replies 5 ·
Circuit Problem with Kirchoff's rules (ugh)
- Color_of_Cyan
- · Replies 3 ·
What is the coefficient of friction for different surfaces and ramp heights?
- COBRA1185
- · Replies 31 ·
Calculating Highway Truck Length for Nuclear Bomb Yield
- kraigandrews
- · Replies 6 ·
Find the height if an orbiting satellite given only velocity.
- lubo
- · Replies 2 ·
Direction of magnetic field in antenna
- sparkle123
- · Replies 5 ·
Moment of force ? some clarifications needed.
- logearav
- · Replies 7 ·
Vector addition with 4 force vectors
- Elysian
- · Replies 1 ·
Consider a pendulum of length d/2 calculate the electric field inside capacitor
- blueyellow
- · Replies 2 ·
Kirchoff voltage law to transistor circuits?
- logearav
- · Replies 4 ·
Finding the tension in rope of pulley with 2 blocks.(lots of my work shown)
- slambert56
- · Replies 8 ·
Tension in a string attached to a bob moving in horizontal circles
- joe465
- · Replies 15 ·
How Is Work Calculated for a Moving Crate?
- joe465
- · Replies 4 ·
What is the effect of the horizontal force on the crate connected to a motor?
- joe465
- · Replies 1 ·
The spherical symmetry of massive bodies
- rob60
- · Replies 2 ·
A question on Shannons Formula Simplification
- dragonflare
- · Replies 2 ·
How does DC supply voltage charge capacitors in a Colpitts oscillator?
- logearav
- · Replies 8 ·
Compton scattering energy and fractional energy loss problems
- Propagandhi
- · Replies 1 ·
How Can Physics Calculate Seesaw Dynamics with Unequal Masses?
- I2use
- · Replies 8 ·
Derivation of momentum operator / origin of -ih d/dx
- Juqon
- · Replies 2 ·
Engine Turbochargers and Intercoolers
- Punkyc7
- · Replies 2 ·
What Happens to di/dt When a Switch in an Inductor Circuit Opens?
- hobbs125
- · Replies 2 ·
Instantaneous Speed: Finding |v| = |dx/dt|
- Icetray
- · Replies 1 ·
How do induced eddy currents produce a magnetic retarding force?
- sparkle123
- · Replies 6 ·
What is the Horse-Power Developed by an Engine in 30 Seconds?
- NumberTheory
- · Replies 1 ·
Density of Metal: 210g/180g/120g
- Prasad Nemade
- · Replies 1 ·
Doubling Water Pump Rate: Increase Motor Power?
- Himal kharel
- · Replies 1 ·
Electric Field: Homework Solutions
- auk411
- · Replies 1 ·
Conservation of Energy of a thrown stone
- knowNothing23
- · Replies 9 ·
Lowest frequency for constructive and destructive interference at Q
- Peter G.
- · Replies 2 ·
Time traveled under constant acceleration.
- mickleroi
- · Replies 5 ·
The moment of inertia of a solid sphere
- bluejazz
- · Replies 4 ·
Physics' connection to Pharmacy
- Megaevelie
- · Replies 4 ·
Why Does Temperature Affect Watch Accuracy? - Expansion of Solids
- Hugh Allen
- · Replies 1 ·
Electromagnetic wave from an antenna
- arl146
- · Replies 25 ·
How Do You Calculate Motion Parameters of a Rolling Object on an Incline?
- aghakarim
- · Replies 4 ·
Calculating work done to catch a ball
- druuuuuuuunnk
- · Replies 9 ·
Polynomial expression of Pendulum period with respect to angle (large)
- seboastien
- · Replies 1 ·
Variable Uncertainty: Solving Equations with Empty Sets
- sillyquark
- · Replies 1 ·
What are the roots of the cubic equation?
- seboastien
- · Replies 4 ·
(Acceleration) Car and Truck Problem
- XwyhyX
- · Replies 2 ·
Solve emf of battery with resistors and voltmeter
- saw176
- · Replies 4 ·
Normal contact force with angles
- furor celtica
- · Replies 2 ·
What Is the Angular Velocity of a Whirling Ball?
- druuuuuuuunnk
- · Replies 2 ·
Path difference equation for destructive interference
- sillyquark
- · Replies 4 ·
Calculate depth below the water surface
- kanga
- · Replies 1 ·
How do I calculate impedance for different components at a specific frequency?
- joe007
- · Replies 2 ·
Finding current direction with Lenz's law and the right hand rule
- Avalanche
- · Replies 5 ·
Object position for 4x inverted image in concave mirror
- roam
- · Replies 6 ·
Spherical mirror radius of curvature
- roam
- · Replies 2 ·
Find angle of incidence given deviation angle
- roam
- · Replies 6 ·
Finding the Curve that Satisfies a Geometric ODE
- Telemachus
- · Replies 1 ·
Average speeds of back and forth trip
- 1MileCrash
- · Replies 4 ·
What Is the Slope of the Inverse of f(x)?
- aisha
- · Replies 3 ·
Forces and injuries in a collision between moving and stationary vehicles
- healey1957
- · Replies 1 ·
Light stikes metal surface; determine work function
- bw1990
- · Replies 3 ·
Using Angles to Solve Force Component Problems
- Muffin
- · Replies 2 ·
Question involving moment of inertia, rotation about a horizontal axis.
- xduckksx
- · Replies 1 ·
Why Is Faraday's Law More Complex with Square Wires?
- teroenza
- · Replies 3 ·
How to Calculate Acceleration and Tension in a Pulley System
- iTheChosen1
- · Replies 2 ·
Width of slit and distance between adjacent maxima
- fa08ti
- · Replies 1 ·
What is the Correct Fourier Series for e^x?
- twoflower
- · Replies 7 ·
Finding the pivot point for a rotating uniform rod
- Drew777
- · Replies 1 ·
Torques in rotational equilibrium
- zspdztzx
- · Replies 2 ·
Calculating Work Done by Ideal Gas at Constant Pressure: PV Diagram Analysis
- Punkyc7
- · Replies 3 ·
Determine units of variables in formula
- 1MileCrash
- · Replies 11 ·
Calculating Average Velocity: Family Trip from Hither to Yon
- 1MileCrash
- · Replies 4 ·
Measuring Efficiency of Fuels with Physics, Chemistry and Biology
- ProPM
- · Replies 4 ·
How far back to sit for safe sound level at rock concert?
- cep
- · Replies 3 ·
Mechanical Oscillator: finding frequency and wavelength of transverse wave
- Sepamo
- · Replies 1 ·
Propagation Velocity of Transverse Waves
- Sepamo
- · Replies 2 ·
Torque needed to accelerate an 11m trolley to 40 mpm
- sandip patil
- · Replies 1 ·
Calculating Current in a Circuit without an Ammeter
- saw176
- · Replies 5 ·
What Is the Work Done When Moving a Mass from X to Y?
- DumbNut
- · Replies 5 ·
A metal rod and a metal ball more submerged in H2O
- Megaevelie
- · Replies 1 ·
An object on an inclined plane
- funoras
- · Replies 7 ·
How Does Applying a Force Change an Object's Velocity?
- physsurveyor
- · Replies 4 ·
Location of a virtual image in a convexed mirror
- Masschaos
- · Replies 16 ·
Galilean invariance verification (kinetic energy and momentum)
- Tiddo
- · Replies 2 ·
Magnetic Field of Three Circular loops
- arl146
- · Replies 17 ·
Moving particles electrons and protons, using magnet to deflect fictional idea.
- rcmango
- · Replies 7 ·
Reading a Electron Energy v Ligth Frequency Graph
- MRFISCHERRULZ
- · Replies 1 ·
Finding Planck's constant from photoelectric effect graph
- MRFISCHERRULZ
- · Replies 1 ·
Falling plank losing contact with wall at 2/3 height
- Order
- · Replies 17 ·
Angular velocity of disk after bullet impact
- khurram usman
- · Replies 7 ·
Light travelling through differing mediums
- fmdk
- · Replies 1 ·