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 Much Does a Basketball Player Displace the Rim When Dunking?
- aeromat
- · Replies 3 ·
Great, thank you for the feedback!
- Peter G.
- · Replies 5 ·
Finding Velocity at impact of a projectile motion with an angle
- Physics Rulez
- · Replies 2 ·
What is the minimum speed needed for a cannonball to orbit the Earth?
- saan100
- · Replies 1 ·
How much heat flows through a brick wall with different thermal conductivities?
- goofnewf
- · Replies 7 ·
Apparent forces in circular motion
- lokobreed
- · Replies 4 ·
Who wins the relativistic space race?
- InsertName
- · Replies 2 ·
How to make a water rocket fly high?
- zeo2396
- · Replies 3 ·
Electric Potential Homework: Find V at P & R, What if x,y>>a?
- mr.alhassan
- · Replies 1 ·
Study of the spring lunching system of pinball
- please help i
- · Replies 1 ·
How Do You Calculate the Speed of Repelling Charged Objects?
- Chipper
- · Replies 3 ·
Calculating Frequency Difference of a Rotating Siren - How Fast Must It Spin?
- sirclash
- · Replies 2 ·
Question dealing with the conservation of mechanical energy.
- scroobnab
- · Replies 11 ·
Calculate Energy and Velocity of Thrown Objects: Beach Ball and Fastball
- eck0616
- · Replies 3 ·
Where Is the Center of Mass in a Club Axe?
- gl7
- · Replies 2 ·
Emission Spectral Lines & the Rydberg Formula
- ObliviousSage
- · Replies 1 ·
What is the final speed of the bicyclist rolling downhill?
- jorge0531
- · Replies 2 ·
Index of Refraction, Snell's Law, and Brewster's Angle
- alibert0914
- · Replies 3 ·
How Does Young's Modulus Affect the Elongation of Composite Rods?
- notsam
- · Replies 1 ·
Kinetic Energy Plot: Find Speed & Turning Point
- soccerkid999
- · Replies 6 ·
Friend pulls the spring without you looking
- aeromat
- · Replies 1 ·
Making Amplitude of Oscillation the Same
- schaefera
- · Replies 1 ·
Why is there no initial momentum in the y direction when two objects collide?
- godkills
- · Replies 8 ·
Solving quadratic equations using formula
- Hyzon
- · Replies 2 ·
Lorentz transformation, special relativity problem
- mhen333
- · Replies 2 ·
Master and Output Pistons in Car Breaking System: Calculating Force and Movement
- goofnewf
- · Replies 3 ·
Calculate Mass Flow Rate of Blood in Aorta
- notsam
- · Replies 2 ·
Free Electron passing over Potential Well
- jegues
- · Replies 6 ·
What Is the Age of Rock Using Potassium-Argon Dating?
- bmxicle
- · Replies 6 ·
Outward force of molasses on a cylinder
- lluhi
- · Replies 3 ·
How Does Moving a Wire in a Constant Magnetic Field Affect Induced Current?
- caljuice
- · Replies 1 ·
Energy calculation with no time given
- mbm
- · Replies 1 ·
Help Solving Rotational Motion Homework Questions
- ghadz8
- · Replies 13 ·
Faraday disc, rate of change of the kinetic energy.
- Silversonic
- · Replies 1 ·
Solve Ohm's Law Problem: Homework Equations & Solutions
- VitaX
- · Replies 1 ·
Calculating Forces and Power on a Block on an Inclined Plane
- ProPM
- · Replies 2 ·
Dynamics and thermodynamic problem
- Maxpin
- · Replies 8 ·
Calculating the Centroid Position of a Symmetrical T-Section
- mechanicstudy
- · Replies 1 ·
How do you calculate the forces involved when a claw hammer pulls out a nail?
- pegasus24
- · Replies 3 ·
Angular dependence (atomic and molecular physics)
- blueyellow
- · Replies 3 ·
An Ant standing peacefully on a String
- jegues
- · Replies 5 ·
Question about charge density in a solid sphere
- LostInToronto
- · Replies 2 ·
Can someone explain this fluids formula to me?
- fernancb
- · Replies 2 ·
What Does Fd Represent in Net Force Calculations?
- reganw
- · Replies 5 ·
Finding Surface Area for a 1 Farad Parallel Plate Capacitor
- Lancelot59
- · Replies 1 ·
Planetary Orbit Energy Calculation Without Gravitational Potential Equation
- SaraF
- · Replies 2 ·
Determining Coefficient of Friction for a Sliding Toboggan on a Slope
- RajNijhar
- · Replies 1 ·
How Does an Electron Impact the Walls of an Infinite Potential Well?
- laxatives
- · Replies 1 ·
Box Acceleration with Given Force and Coefficient of Friction
- RajNijhar
- · Replies 2 ·
Kepler's Laws: Escape Velocity and Rotational Period of Asteroid
- sillybean
- · Replies 5 ·
Solving Infinite Square Well: Find Probability of Electron in 0.15nm
- khemist
- · Replies 5 ·
Why do we use negative signs for clockwise moments in torque calculations?
- mechanicstudy
- · Replies 6 ·
What's the Net Charge on the Outer Sphere?
- bmxicle
- · Replies 8 ·
Why Is Capacitor Reactance 1/LC Instead of 1/sqrt(LC)?
- ben.tien
- · Replies 3 ·
Calculating Friction Force on a Resting Ladder: A Physics Problem
- TyErd
- · Replies 13 ·
How to use a spring balance in space?
- reganw
- · Replies 6 ·
Magnetic Field, Parallel wires carrying current
- jegues
- · Replies 2 ·
Determining the Phase Constant in Simple Harmonic Motion
- joeyjane
- · Replies 2 ·
Newton's laws, finding acceleration and force
- jevillan
- · Replies 1 ·
Magnetic force between two parallel hanging wires
- c4795
- · Replies 8 ·
Increase Entropy: Solve 0.15kg Ball Dropped from 24m Tower
- liz_p88
- · Replies 2 ·
Need formula to relate distance to arcsec in the sky
- leonne
- · Replies 6 ·
Which Graph Paper to Use for Power Relationships: Semi-Log vs Log-Log?
- JyN
- · Replies 1 ·
Capacitance Problem: Getting Charge on Each Capacitor
- Lancelot59
- · Replies 6 ·
Direction of flow of the electrons
- stmartin
- · Replies 5 ·
How Does the Weight at Point E Change When Rod AB Moves Horizontally?
- chawki
- · Replies 16 ·
How Does Adding a Hydrogen Layer Affect Tunneling Coefficients in STM Analysis?
- erok81
- · Replies 1 ·
Calculating Uncertainty in Averages for Scientists
- spikethekitty
- · Replies 1 ·
Mass of an atomic layer of a baloon
- Myrddin
- · Replies 1 ·
What's an inertial frame of reference?
- MarekS
- · Replies 3 ·
How Does Kirchhoff's Law Apply to Calculating Currents and Voltage Differences?
- flyingpig
- · Replies 42 ·
How can I quickly determine the direction of induced current using Lenz's Law?
- flyingpig
- · Replies 4 ·
Relativistic energy and momentum 2
- roman15
- · Replies 18 ·
Maxwell Distribution: Deriving Mean and Max Speed
- blueyellow
- · Replies 5 ·
Why would the car move forward after being hit
- o0griff0o
- · Replies 9 ·
Calculating Angular Momentum for a Moving Object with a Given Force
- Duderonimous
- · Replies 2 ·
Inductor (and Capacitor) Discharge
- Willa
- · Replies 23 ·
Resistance against temperature graph
- hms.tech
- · Replies 1 ·
Dielectric constant in the energy density function
- RoyalCat
- · Replies 5 ·
Angular Momentum: Spin 1/2 Quantum Number Clarification
- bon
- · Replies 1 ·
Conservation of Linear Momentum problem help
- wsender
- · Replies 6 ·
A block on a wedge which itself sliding
- center o bass
- · Replies 4 ·
Problem with reflection and refraction.
- spikers220
- · Replies 1 ·
Linear Momentum Homework: 6kg Ball Hits Wall at 4.96 m/s
- Jake4
- · Replies 12 ·
Relating Voltage to Magnetic Field
- llenkic
- · Replies 2 ·
How Does the Track's Force Affect a Moving Car's Dynamics?
- dvep
- · Replies 12 ·
Calculate Total Angle Through Rotation of Steam Engine Flywheel
- Anya91
- · Replies 1 ·
Magnetic field inside coaxial conductor
- Shukie
- · Replies 1 ·
Question about this problem and Walter Lewin's video
- flyingpig
- · Replies 10 ·
Calculating Resistance (, I don't know any physics at all)
- itsastruggle
- · Replies 1 ·
Weight on a pulley, torque, mechanical energy
- maxbashi
- · Replies 1 ·
Voltage amplitudes across inductor and resistor
- physicsplease
- · Replies 9 ·
Does Wrapping a Whip More Times Increase Its Ability to Support Weight?
- cellogirl3
- · Replies 1 ·
Induced Voltage as a function of time.
- ElijahRockers
- · Replies 2 ·
Finding Acceleration in a Constant Angular Acceleration System
- jtw2e
- · Replies 5 ·
What Is the Total Energy in an Oscillating LC Circuit?
- spottedcow913
- · Replies 1 ·
Force Problem Regarding Resultants.
- neoncrazy101
- · Replies 1 ·
Resultant Force of Two Horses Pulling Barge: 1.25 x 103N
- reganw
- · Replies 6 ·
Calculating Voltage Drop in an AC Circuit with a High Power Supply and Motor
- Sarah88
- · Replies 2 ·
Find the magnetic field at the center of a rectangle
- vande060
- · Replies 2 ·