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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How to calculate the propagation error for a tricky Eq
- andresfirman
- · Replies 5 ·
Heat and work -- how much energy to climb the rope....
- Sam Vermeulen
- · Replies 6 ·
Find all resistor values in the Wheatstone bridge
- Syle1
- · Replies 3 ·
No. of trials for P>0.99 of at least one basket ball success
- Pushoam
- · Replies 1 ·
A hollow sphere sinks some fraction f in water...
- Vriska
- · Replies 16 ·
Probability of a student failing a prelim but passing the course
- Pushoam
- · Replies 4 ·
How Much Current Should Flow Through My Electromagnet Experiment?
- lekh2003
- · Replies 5 ·
Solving for Final Equilibrium Temperature of Water-Copper System
- Sam Vermeulen
- · Replies 2 ·
Two blocks slide on an inclined plane
- hellovenus
- · Replies 13 ·
Dimensions of Air Drag Constants and Terminal Speed Equation
- mdavies23
- · Replies 15 ·
How Do You Solve a Dimensional Analysis Problem for a Block in Viscous Fluid?
- lichenguy
- · Replies 9 ·
Using Conservation of Energy to Analyze a Potential Energy Graph
- chuuke
- · Replies 1 ·
Centripetal Force / circular motion question
- Latinized
- · Replies 7 ·
Where Are the Neutral Points in a Square Configuration of Four Point Charges?
- VSayantan
- · Replies 9 ·
Problem set with air conditioners and thermodynamics
- Matt Poirier
- · Replies 5 ·
How Does Newton's Third Law Apply When a Bat Hits a Ball?
- SillyYak
- · Replies 11 ·
Calculating Torque and Current for Quadcopter Rotor Blades
- Timothy Teo
- · Replies 1 ·
Constant rotational kinetic energy
- fib1123
- · Replies 1 ·
How to Determine Values of L and C in a Series RLC Circuit at Resonance?
- Rijad Hadzic
- · Replies 8 ·
Tangential and centripetal force
- robax25
- · Replies 17 ·
Moment of Inertia of a molecule of collinear atoms
- raopeng
- · Replies 4 ·
Ideal Gas Law Homework: Calculating Number Density and Spacing Between Molecules
- Matt Armstrong
- · Replies 2 ·
Understanding Two Convex Lenses: Ray Diagram and Focal Lengths
- waley
- · Replies 3 ·
Finding the final speed of a Positive and Negative Charge
- Abu
- · Replies 5 ·
What is the Work Done During a 100m Sprint?
- dboice95
- · Replies 16 ·
Ranking Kinetic Energy: Why Does Mass Matter More Than Amplitude?
- Huski
- · Replies 22 ·
Torque on Rod Due to Normal Force at a Hinge
- erfz
- · Replies 14 ·
Convert atomic mass into Joules
- Sebastiaan
- · Replies 8 ·
Show the relationship between torque and angular momentum
- Shank
- · Replies 3 ·
Work done by a force over a distance, relative or absolute?
- Keran
- · Replies 1 ·
Force of Wind from these variables
- Jetflyer0
- · Replies 43 ·
S = 12t and S = 490t^2 What do they mean?
- Indranil
- · Replies 9 ·
Can't find correct expression for discharging RL circuit
- Rijad Hadzic
- · Replies 7 ·
Beta Spectroscopy: Decay Path of Na 22 and Sr 90 | Experimental Setup & Results
- Tian En
- · Replies 1 ·
How Do You Calculate the Velocity of a Stone in Projectile Motion?
- The Vitruvian Man
- · Replies 1 ·
Maximum Speed for Circular Turns: Radius Doubling Question Explained
- micjk
- · Replies 4 ·
Angular Momentum of a hydrogen atom in the 7f state
- Noreturn
- · Replies 3 ·
Electrostatic Force - Locations of a second charge
- Sandro Romualdez
- · Replies 6 ·
Angular momentum and rotational energy
- starstruck_
- · Replies 2 ·
What is the role of cosφ in calculating power in LRC series circuits?
- waley
- · Replies 2 ·
Rewriting cos function as sine function
- Rijad Hadzic
- · Replies 3 ·
What circuit element should be placed in series to raise power factor?
- waley
- · Replies 13 ·
Why am I getting 3 equations and 2 unknowns when summing moments about point A?
- fayan77
- · Replies 3 ·
Maximum frequency if there is to be one diffraction order
- thomas19981
- · Replies 4 ·
Mechanical Advantage in a crank system
- powdernose
- · Replies 26 ·
Elongation With change in Force
- Armando Arizpe
- · Replies 1 ·
Conservation of mechanical energy
- Anonymous123451234
- · Replies 8 ·
Air I would need in order to be able to safely float 1000kg
- Clasi
- · Replies 12 ·
Broglie wavelength - calculate electric potential difference
- pbonnie
- · Replies 5 ·
What will be the energy required to make 1 electron escape?
- Tanishq Nandan
- · Replies 5 ·
How Does Invariance Apply in Relativity Theory?
- timetraveller123
- · Replies 15 ·
Can't understand my books diagram?
- Rijad Hadzic
- · Replies 3 ·
Angular momentum and rotational inertia
- starstruck_
- · Replies 25 ·
High School Physics Question -- Skateboarder Jumps & Conservation of Momentum
- Kate2018
- · Replies 3 ·
Is there a way to find the velocity of air in a flute?
- orangeraindrops
- · Replies 8 ·
What a I doing wrong? Swing/pendulum Questioj
- dantechiesa
- · Replies 8 ·
Calculating Area Under a Graph with Units in Gravity-Free Space
- juju1
- · Replies 7 ·
Elliptical Orbits and Angular Momentum
- WWCY
- · Replies 7 ·
Simple Pendulum motion - Numerical Integration
- Alexanddros81
- · Replies 12 ·
Pressure Required for Fireman to Send Water 12m High | Physics Problem
- Raffaele
- · Replies 2 ·
How to Find Instantaneous Velocity Using Force
- Arman777
- · Replies 2 ·
Using Energy and momentum conservation to derive the equation
- Jenna
- · Replies 3 ·
Finding Work done under a graph?
- juju1
- · Replies 13 ·
Torque acting on a particle in rotational motion
- peterspencers
- · Replies 5 ·
Calculating Rotational Speed After Dart Strikes Target Disk
- xxphysics
- · Replies 7 ·
Grating and slits problem 28 from 9702_s17_qp_13.pdf
- Michael Marchenko
- · Replies 1 ·
How to Find Total Power/Intensity of a Light Beam Using Cylindrical Coordinates?
- shaf777
- · Replies 3 ·
Rearranging Formulas: Fairly simple but I'm very stuck
- Alexander8
- · Replies 7 ·
Voltage of thundercloud as point charge
- Physiker98
- · Replies 4 ·
Lab: Conical Pendulum - Understanding A & Unit
- Helenah
- · Replies 1 ·
How Does Bernoulli's Principle Apply to Varying Pipe Diameters and Water Flow?
- Matt Armstrong
- · Replies 3 ·
Basic Inertia/Newton's Laws Questions
- Gilbert189
- · Replies 28 ·
Projectile Kinetic Energy and Recoil in Spring Gun Experiment
- CoreanJesus
- · Replies 6 ·
Does Heat Treatment Affect Elasticity? Investigating Changes in Young's Modulus
- Dionisius DH
- · Replies 1 ·
Balancing a Seesaw: Finding Mass with Torque
- Katelyn
- · Replies 7 ·
Power and rate of photon emission with a given temperature
- wang jia le
- · Replies 4 ·
Torque On a Clock Hanging from a Nail
- tul725
- · Replies 4 ·
Work done on a shopping cart by friction when being pushed
- juju1
- · Replies 4 ·
A disk is tied to a stationary rolling disk and let go
- Vriska
- · Replies 14 ·
Expectation value of mean momentum from ground state energy
- TheBigDig
- · Replies 4 ·
Why is conservation of angular momentum failing in this case
- Roxas ross
- · Replies 4 ·
Three Pulley - two masses system.
- SciencyBoi
- · Replies 17 ·
How Is the Vertical Force Calculated at the Hinge in a Beam and Sign System?
- Anonymous123451234
- · Replies 8 ·
Eigenvalues and eigenvectors of a Hamiltonian
- astrocytosis
- · Replies 2 ·
Kinetic energy of solid sphere that is rolling
- starstruck_
- · Replies 2 ·
Time of Electron/Proton to Radiate Away Half of Their Energy
- Physistory
- · Replies 2 ·
A train dragging coal while more coal is added into it....
- elkaka7
- · Replies 3 ·
What is the acceleration normal to PC in polar coordinates?
- Jahnavi
- · Replies 34 ·
Cylindrical Vector Field Equation Convsersion to Cartesian
- sittingOnTheFloor
- · Replies 17 ·
Transmission and reflectivity in a Michelson interferometer.
- thomas19981
- · Replies 2 ·
Maximum/minimum reflection | Thin-film interference
- IamNotAPhysicist
- · Replies 6 ·
Calculate Density: Overflow Container w/ $100$ $cm^3$ & $120$ $g$ Stone
- Bobs
- · Replies 5 ·
Velocity-Time Graph: Dog's Position
- aatari
- · Replies 6 ·
Understanding Reaction Forces: Problem 6.8 & 6.82
- fayan77
- · Replies 5 ·
Why must we use integral to find the resultant force?
- EastWindBreaks
- · Replies 4 ·
Constant acceleration and radius of curvature
- Jahnavi
- · Replies 6 ·
Solving Torque Unit Issue: kg*m3/s2 ≠ kg*m2/s2
- Chad Jensen
- · Replies 2 ·
Calculating Index of Refraction with Wavelength
- waley
- · Replies 1 ·
Solve Physics/Math Homework: x & y Variables
- Oscar Zarate
- · Replies 2 ·
Pulley Question : find tension in rope (Help )
- Lori
- · Replies 5 ·