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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Projectile Motion (Baseball Question)
- skateraXIX
- · Replies 2 ·
Crate on a slope - Angles and Tension
- mybrohshi5
- · Replies 23 ·
Why does dropping non-significant figures make my solutions wrong?
- emc2cracker
- · Replies 6 ·
Force Exerted by Floor on 70kg Person in Elevator
- contlee
- · Replies 1 ·
Friction and Tension with blocks on an incline
- lhinds7
- · Replies 4 ·
Calculating Angle of Elevation for 1.00m Track with 1.86cm Blocks
- ofrancis
- · Replies 1 ·
How do we calculate slope of a acceleration vs.time graph?
- Roro312
- · Replies 2 ·
Electrostatic Potential for Two Concentric Cylindrical Shells
- sweetdion
- · Replies 7 ·
How do you calculate the total E-field for a cube with a 3D vector E-field?
- dillonmhudson
- · Replies 10 ·
Finding unknown EMF and currents with two known EMFs and resistors
- jwillsharp
- · Replies 1 ·
How to Convert Between Velocity-Distance and Distance-Time Graphs?
- ShakeECET109
- · Replies 5 ·
Finding equivalent resistance in complicated circuit
- Tekee
- · Replies 2 ·
Solving Fuzzy Dice Question: Finding Car Acceleration
- sheepcountme
- · Replies 2 ·
Energy levels of carbon atom electrons
- warfreak131
- · Replies 2 ·
Collision between two pucks, find the angle
- jahrollins
- · Replies 2 ·
How Do You Calculate the Average Acceleration of an Eraser in a Physics Problem?
- nadino1992
- · Replies 3 ·
Why do stars twinkle but planets don't?
- DanicaK
- · Replies 3 ·
Change in potential energy problem
- Cherrybawls
- · Replies 7 ·
Carnot engine melting ice: why does reservoir temperature affect melting time?
- vladimir69
- · Replies 6 ·
Multiple friction and incline problems with free body diagrams
- Ajeezy
- · Replies 2 ·
How Do Radiowaves Interfere Destructively at a Cliffside Radiotelescope?
- EmmaK
- · Replies 6 ·
Stretching a stretched spring/non-stretched spring
- lemon
- · Replies 2 ·
Can implosion experiment: which gas law explains it?
- kandyce
- · Replies 2 ·
Vibrations problem - Transverse in a string under tension
- alexisonsmith
- · Replies 2 ·
A Single Turn, Square Loop (torque)
- DeltaIceman
- · Replies 4 ·
How Does Newton's Law of Cooling Predict Time for Temperature Changes?
- dymand68
- · Replies 1 ·
How Do You Calculate Work and Heat in a Carnot Engine Cycle?
- Wellesley
- · Replies 4 ·
How Do You Solve for x in This Algebra Equation?
- haengbon
- · Replies 6 ·
Frictional Force/Kinematics Problem
- pingpong240
- · Replies 13 ·
Distance traveled when accelerateing
- slpnsldr
- · Replies 10 ·
Calculating Change in Length for a Steel Bridge Span Without Expansion Joints
- dymand68
- · Replies 1 ·
What forces are acting on a block suspended by a rope over a pulley?
- mybrohshi5
- · Replies 3 ·
Watertight and low wight material
- said.alomairi
- · Replies 1 ·
Derive Electric Potential Energy
- SpringPhysics
- · Replies 4 ·
Can Air Be Treated as an Ideal Gas in Absolute Zero Calculations?
- hover
- · Replies 4 ·
Calculate the capacitance per unit length of the cable
- ndoc
- · Replies 1 ·
Tangential Acceleration vs. Tangential component of force
- jumbogala
- · Replies 1 ·
Using a pendulum to find Planetary mass and radius
- boardaddict
- · Replies 1 ·
Calculating Potential from Field
- Ron Burgundy
- · Replies 4 ·
Do tangential and radial acceleration components have direction?
- jumbogala
- · Replies 2 ·
Electrostatic Potential of 4 charged spheres on corners of a square
- sweetdion
- · Replies 1 ·
Calculating Total Energy of a High Diver's Leap
- lbella026
- · Replies 6 ·
Parallel-plate capacitor charge problem
- Allyson
- · Replies 2 ·
Distance pushed for 20kg block with 8N force reaching 2 m/s
- lbella026
- · Replies 1 ·
How do I determine the direction of velocity in kinematics?
- theel
- · Replies 2 ·
Why Does Reverse Saturation Current Spike at Breakdown Voltage?
- aliz_khanz
- · Replies 6 ·
Finding final velocity of projectile through window at 13.3 m/s launch
- theoronhalde
- · Replies 8 ·
How Many Electrons Are Removed from a Charged Copper Ball?
- Mek8388
- · Replies 2 ·
Whirling stone - Tension/Velocity
- lemon
- · Replies 12 ·
Finding Electric Field at a Specific Point and on the Y-Axis
- intenzxboi
- · Replies 1 ·
Finding the Maximum Electric Field of a Charged Ring
- 05holtel
- · Replies 2 ·
Zero position in Potential Energy
- new^2^physics
- · Replies 2 ·
Electrostatics - finding magnitude of a third charged particle
- Linus Pauling
- · Replies 8 ·
What is the tension in the cable of a descending cable car with a counterweight?
- mybrohshi5
- · Replies 19 ·
Is Velocity Zero When the Velocity-Time Graph Passes Through Zero?
- optoracko
- · Replies 6 ·
Match head rubbed over a distance
- Tybstar
- · Replies 1 ·
Change in electrical potential energy of a charged tire shrinking
- Physics197
- · Replies 3 ·
How far does a cylinder roll after being released from an incline?
- amegirl24
- · Replies 1 ·
Normal force on an object sliding down a frictionless ramp
- mybrohshi5
- · Replies 16 ·
How much power is the customer receiving?
- mike_302
- · Replies 1 ·
Frictional force on a 40-N crate with 12-N applied force
- gracemir
- · Replies 5 ·
Gauss's law, cylinder of length L
- lidl
- · Replies 6 ·
How many moles of gas are in the bag?
- Wellesley
- · Replies 4 ·
Calculating Work Done by Electric Field on a Point Charge
- 05holtel
- · Replies 3 ·
Dissipated Heat in Joules for Braking Motor with Given Parameters
- Dangousity
- · Replies 6 ·
System with two boxes and pulleys
- Mcoroklo
- · Replies 3 ·
Formula to calculate the uncertainty in the density
- GlobalDuty
- · Replies 4 ·
Calculating the Force on a Painter by a Chair Using Newton's Second Law
- mybrohshi5
- · Replies 9 ·
Where Does a Projectile Fired from a Cliff Land?
- stridle
- · Replies 2 ·
Projectile Motion from a cliff with no information.
- stridle
- · Replies 5 ·
Calculating the Mass of a Negative Ion with a Specific Charge
- ManchesterDan
- · Replies 3 ·
Finding Acceleration of Blocks Connected by String
- ƒ(x)
- · Replies 7 ·
Why do all three quantum models only consider positive quantum numbers?
- xmflea
- · Replies 1 ·
Tension and acceleration of 1kg and 2kg blocks with friction
- NinjaChemist
- · Replies 1 ·
A question on vertical circular motion
- Charismaztex
- · Replies 5 ·
Projectile Motion from a Cliff: Solving for Initial Velocity and Launch Angle
- pkc111
- · Replies 4 ·
Is My Calculation of the Divergence of a Vector Correct?
- meteorologist1
- · Replies 15 ·
Relative Velocity/Two-dimensional motion
- kingofretards
- · Replies 6 ·
Average Bullet Velocity Inside the barrel
- waterwalker10
- · Replies 10 ·
Find the change in electric potential energy
- Octoshark
- · Replies 2 ·
Calculating Charge in Equilibrium for an Electrostatics Problem
- Linus Pauling
- · Replies 1 ·
Conservation of Momentum of a boat and women
- negatifzeo
- · Replies 1 ·
Minimum distance b/w projectiles
- aim1732
- · Replies 2 ·
Two batteries and three resistors
- n.hirsch1
- · Replies 1 ·
Change in electric potential energy of charged conducting tire
- Physics197
- · Replies 1 ·
Graphical Analysis of Motion: Investigating Velocity and Acceleration
- Draggu
- · Replies 2 ·
Plane velocity with northward wind: why can't I just add the speeds?
- theskyisgreen
- · Replies 1 ·
Solve Oscillation Problem: |v|=0.5v_max
- phat2107
- · Replies 1 ·
Finding cable tension when elevator scale reads 400 N
- mybrohshi5
- · Replies 2 ·
Calculating Local Interface Curvature for Fluid Dynamics Simulation
- sam_the_man
- · Replies 1 ·
Physics behind this bottle holder?
- ahhppull
- · Replies 1 ·
A golfer gives a ball a maximum initial speed of 39.9 m/s.
- MrGoodyear812
- · Replies 2 ·
Magnitude of bullet fired into gel
- tcharger130
- · Replies 2 ·
Solve Circuit Problem: Find Battery Resistance
- GreenPrint
- · Replies 1 ·
Do two dropped balls hit the ground at the same time?
- Misr
- · Replies 12 ·
What are the magnitudes of the two force components?
- Ryuk1990
- · Replies 1 ·
String waves on a cable car and free falling.
- Gravitino22
- · Replies 8 ·
Radioactive Decay Graph in y=mx+c form
- Rockerjabroni
- · Replies 1 ·
Conservation of Momentum in Collision between a Ball and a Truck
- cixelsyD
- · Replies 2 ·