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 Time in Air for a Trebuchet Projectile?
- Marghk
- · Replies 2 ·
How Does Viscous Resistance Affect Object Motion?
- hastings
- · Replies 13 ·
Why is my work due to friction calculation incorrect?
- Alabran
- · Replies 6 ·
Statistical analysis of photometric data - Astronomy
- big man
- · Replies 2 ·
What is the final volume of container B?
- skinard360
- · Replies 15 ·
Calculating μs of a Car: Understanding Acceleration and Friction
- TAN6
- · Replies 1 ·
Why Do We Use Integer Atomic Masses in Nuclear Reactions?
- Amith2006
- · Replies 1 ·
How Is Mutual Energy Calculated Between Non-Parallel Dipoles?
- MathematicalPhysicist
- · Replies 7 ·
Why is Fr equal to I*alpha for a door's rotation?
- Ahmed Abdullah
- · Replies 10 ·
Voltage/ Voltmeter: Why 1.50 V?
- husky88
- · Replies 4 ·
Finding sprinter accelerations in a 100m race
- mohdhm
- · Replies 4 ·
What Are the Brass Pins in My Electronics Kit For?
- flash
- · Replies 2 ·
Time for 100 kg object to slow to half speed with quadratic drag
- hastings
- · Replies 15 ·
How to Find the Velocity of Mass 9m at the Bottom?
- clicwar
- · Replies 6 ·
Can you explain the whole solution?
- alexnder4444
- · Replies 1 ·
Electric Field Due to a Line of Charge Problem
- frankfjf
- · Replies 44 ·
Free fall drop tower braking forces for 250 foot ride
- auburnfan2015
- · Replies 5 ·
Deriving equation for electrostatic force.
- Checkfate
- · Replies 3 ·
How Does Tension Affect Work Done in a Helicopter Rescue Scenario?
- Paul_Bunyan
- · Replies 3 ·
Object Must Be Placed at 15cm from Convex Mirror for Half Size Image
- -_-'
- · Replies 2 ·
How Does Slipping Affect Translational and Rotational Speeds on an Incline?
- hippolyta2078795
- · Replies 1 ·
Doppler effect: student running with tuning fork toward wall
- kle89
- · Replies 2 ·
Projectiles (delta)(theta) = g(delta)t/V0
- calgaryleb
- · Replies 2 ·
Aluminum bullet embedded in ice: why isn't velocity used?
- Boozehound
- · Replies 4 ·
Calculating Initial Pressures in Rigid and Piston Containers with Monatomic Gas
- skinard360
- · Replies 3 ·
Two boats racing across a 42 km lake at different speeds
- toothpick09
- · Replies 7 ·
Evaporation of Water on a Jogger
- Boozehound
- · Replies 3 ·
Finding maximum shear stress in a 200mm² component under 40kN tensile force
- Malawaki
- · Replies 2 ·
Force Couple Problem (Thrust of Ship)
- Ratiocinator
- · Replies 7 ·
Is Rolling Resistance Constant When a Ball Rolls Across a Table?
- Schalken
- · Replies 1 ·
Why Do Electromagnetic Wave Frequencies Remain Constant Across Different Media?
- Lennox786
- · Replies 7 ·
Motion of a body under acceleration of gravity
- wanchosen
- · Replies 5 ·
Determine the average speed for the car trip
- toothpick09
- · Replies 5 ·
Calculating Heat Required for Ice Cube Transformation
- Boozehound
- · Replies 1 ·
Solving for x in a Combination of Two Convex Lenses
- anand
- · Replies 3 ·
How Do You Calculate Total Image Distance in a Dual Lens System?
- Diiyad
- · Replies 1 ·
How Long Before the Coin Slips on the Accelerating Turntable?
- PJ81
- · Replies 3 ·
Calculating Average Speed of a Road Trip
- toothpick09
- · Replies 1 ·
Physics lab colliding two cars into each other
- cindy!
- · Replies 3 ·
Coefficient of sliding friction for locked golf cart wheels
- camjam73
- · Replies 6 ·
Why can't a charged rod have a voltage through it?
- husky88
- · Replies 4 ·
Deriving the antireflective coating formula n1=sqrt(n0*ns)
- reb30
- · Replies 2 ·
Specific Heat Capacity and Change in Internal Energy
- nellydude88
- · Replies 3 ·
Two masses attached by a string.
- MathematicalPhysicist
- · Replies 11 ·
Mechanical Energy in a Pendulum
- pharm89
- · Replies 2 ·
Prove that the particle is moving with simple harmonic motion
- itsmissnerdtoyo
- · Replies 4 ·
Pushing or pulling will be easier to do the work?
- Lilkaze
- · Replies 3 ·
Deflection of an Electron Beam by an Electric Field
- husky88
- · Replies 13 ·
Finding potential difference from electron flow and heat dissipation
- husky88
- · Replies 6 ·
Sun's Rays & Convex Mirrors: What is the Image Size?
- Mr.IITIAN007
- · Replies 2 ·
How Do You Calculate the Acceleration During Projectile Launch?
- danield
- · Replies 13 ·
Verifying V=f? in Physics Lab: Calculating Frequency
- dvyu
- · Replies 1 ·
Finding elementary charge from Millikan oil drop data
- Lennox786
- · Replies 3 ·
Calculate Bank Angle for Airplane Circling Airport
- MJC8719
- · Replies 1 ·
How Much Volume Is Lost When Mistaking Cranberry Barrels for Apple Barrels?
- bilalbajwa
- · Replies 1 ·
What is the net charge of a metal sphere after electrons are added?
- Missy81590
- · Replies 8 ·
Charges on spherical conductors
- cuppy
- · Replies 1 ·
Meters of water are in a cylindrical cumulus cloud
- bilalbajwa
- · Replies 1 ·
Calculating Potential Difference in Suspended Capacitor
- jesuslovesu
- · Replies 2 ·
What Is the Rod's Slope in Frame S'?
- MathematicalPhysicist
- · Replies 7 ·
Solving the Fermi Energy of Copper: Momentum, Wavelength, Velocity
- sanjeeb
- · Replies 1 ·
Conservation of energy of bullet into sandbag
- pharm89
- · Replies 9 ·
What Temperature Must an Iron Band Be Heated to Fit a Barrel?
- e(ho0n3
- · Replies 5 ·
Electric Field of a Polarized Ring: Verify Your Answer
- Mr.IITIAN007
- · Replies 2 ·
Is Every Listed Force a Central Force?
- neelakash
- · Replies 1 ·
Why is r² negative for U(r)=-A/r⁴ with Bohr quantization?
- the keck
- · Replies 5 ·
Projectile motion w/drag equations
- Mag|cK
- · Replies 15 ·
Does air resistance change time to peak vs time to descend?
- reza
- · Replies 7 ·
Minimum coefficient of static friction for a car rounding a curve
- nellydude88
- · Replies 5 ·
How Does Charge Distribution Affect Electric Potential in a Cylindrical Shell?
- Mr.IITIAN007
- · Replies 1 ·
Thermal conductivity of superinsulation around liquid helium container
- gollum
- · Replies 2 ·
Find Charge q3 for System of Charges in Equilibrium
- anand
- · Replies 2 ·
Kinetic Energy of Point Charges
- cuppy
- · Replies 1 ·
When Does Light Refract in Different Materials?
- rizzleras
- · Replies 2 ·
Height of a projectile at a certain point
- ridik88
- · Replies 11 ·
Orbits for central force F = −ar/r³ when a > 0 and a < 0
- neelakash
- · Replies 1 ·
Continuous line charge distribution
- GravityGirl
- · Replies 2 ·
Finding Deflection of Electron Beam in Cathode Ray Tube
- husky88
- · Replies 4 ·
Electromagnetic Induction / Transformers
- Lennox786
- · Replies 1 ·
How Do You Calculate Work and Distance in These Physics Problems?
- moela
- · Replies 2 ·
Tension in a yo-yo string making one revolution per second
- bilbobaggins
- · Replies 8 ·
Determine the electric flux through each of the sides
- Rasine
- · Replies 9 ·
Sir Isaac Newton Contest: Find the Minimum Length for a Safe Landing
- sunchips
- · Replies 7 ·
How Does the Sum of Angular Velocities Affect System Motion in Physics?
- yetar
- · Replies 1 ·
Why do tensions differ on either side of a massive pulley?
- clicwar
- · Replies 1 ·
Transition rules for four quantum numbers
- gollum
- · Replies 1 ·
What Quantum Numbers Change When a Hydrogen Atom Transitions from 5d to 4f?
- gollum
- · Replies 1 ·
Calculating Molecule Speed Ratios in a Gas Mixture
- L²Cc
- · Replies 4 ·
A tape,pulley,disk and undisclosed mass.
- MathematicalPhysicist
- · Replies 5 ·
Potential difference and a proton
- cuppy
- · Replies 4 ·
Where Does the Electric Potential Equal Zero Along the X-axis?
- cuppy
- · Replies 1 ·
How Much Force Keeps a Car on Track in Circular Motion?
- paperclip
- · Replies 12 ·
How does internal reflection affect thin film emissive display performance?
- s7k22
- · Replies 4 ·
Understanding Stationary Waves in Open and Closed Tubes
- t_n_p
- · Replies 2 ·
Pitch Speed Revalive to Bat Speed
- CardsFan
- · Replies 2 ·
Graph Needed to Find e and Io: lnI vs. V?
- inv
- · Replies 3 ·
Block and wedge. Analysis of the center of mass
- clicwar
- · Replies 1 ·
Math error in electromagnetic wave problem solution?
- WolfOfTheSteps
- · Replies 3 ·
Can I Build a Simple Optical Device with Just Two Magnifying Glasses?
- AznBoi
- · Replies 3 ·