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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What are the units of k in t = k√(h)/d²?
- Sorry!
- · Replies 3 ·
How Do I Calculate the Potential Difference in a Capacitor with a Given Charge?
- lettertwelve
- · Replies 10 ·
What is the tension in a rope twirling a 1.5 kg rock in a frictionless circle?
- psychfan29
- · Replies 2 ·
How Do You Calculate the Rotational Inertia of a Composite Object?
- dari09
- · Replies 1 ·
Box on frictionless incline: find power from tension
- nickclarson
- · Replies 1 ·
What Are the Units for Coulombs and Volts in Terms of m, kg, and s?
- cemar.
- · Replies 2 ·
Converting a polar vector to component form
- chocolatelover
- · Replies 8 ·
How does the V shape of a shock wave depend on the speed of the wave source?
- zachcumer
- · Replies 1 ·
What frequency of sound produces a wavelength of 1 meter in room-temperature air?
- zachcumer
- · Replies 18 ·
When does a scale read more than someone's actual weight in an elevator?
- mattr9
- · Replies 7 ·
Force question on pulling worker
- StephenDoty
- · Replies 7 ·
Noisy Jackhammer Man: Special Headphones Allow Conversation
- zachcumer
- · Replies 4 ·
Find Force Acting on 5.0kg Stone in 20m Distance
- StephenDoty
- · Replies 3 ·
Finding the frictional force of a block
- `Rage
- · Replies 1 ·
How long for skier to stop on an 8.7° frictionless slope?
- Ryo124
- · Replies 7 ·
How Is Work Calculated When a Suitcase Is Pulled Up a Ramp?
- kdizzle711
- · Replies 4 ·
How Do You Calculate the Orbital Characteristics of a Satellite?
- latitude
- · Replies 2 ·
Calculating Work to Compression a Spring 4.08cm with 718N Force"
- kdizzle711
- · Replies 3 ·
Calculate the current through each ideal battery
- perfect_piccolo
- · Replies 1 ·
Three forces applied to a trunk
- TS656577
- · Replies 7 ·
What is the magnitude and direction of vector c
- torresmido
- · Replies 3 ·
How Deep Is the Ocean If Ultrasonic Sound Takes 6 Seconds?
- zachcumer
- · Replies 19 ·
Terminal Velocity: Calculate Mass of 22cm Ball
- StephenDoty
- · Replies 3 ·
How Long Until Two Balls Thrown Differently Meet at the Same Height?
- princesspriya
- · Replies 2 ·
Figure skater rotating with sphere: forces, fall time, and kinetic energy
- Prodan
- · Replies 1 ·
Acceleration from 2 Force Vectors
- zcabral
- · Replies 11 ·
How to Calculate Time it Takes for an Object to Fall or Reach the Top of an Arc
- engstudent363
- · Replies 1 ·
Centripetal acceleration of Earth around Sun
- blue5t1053
- · Replies 3 ·
Charged parallel plates, proton and electron released simultaneously
- dewert
- · Replies 2 ·
Graph of Kinetic Energy v. Displacement of a Falling Object
- brendan3eb
- · Replies 2 ·
SUPER ULTRA MEGA CATAPULT [no joke]
- jp.mercado
- · Replies 3 ·
What is the net force acting on the truck?
- lpw8340
- · Replies 1 ·
Finding projectile range from velocity components at 45 degrees
- iuhoosierz
- · Replies 10 ·
What Is the Electric Field Magnitude in the Copper Section of a Composite Wire?
- aeris
- · Replies 5 ·
Solving the 2D Collision Between Particles of Same Mass
- Littlepig
- · Replies 2 ·
Plastic sleeve and cylinder with low wear and friction
- es_shoes
- · Replies 1 ·
Finding position and velocity in SHM with given initial conditions
- ~christina~
- · Replies 1 ·
Find the current by adding the resistances
- ashleydeer7
- · Replies 1 ·
Force for uniform circular motion
- jj8890
- · Replies 3 ·
Solving Circuit with Mesh Analysis
- jesuslovesu
- · Replies 3 ·
Why power equations give different answers for series lightbulbs
- BuBbLeS01
- · Replies 1 ·
How Do You Calculate Deuteron's Velocity After a Neutron Collision?
- soul5
- · Replies 2 ·
Average acceleration of a rebounding hockey puck
- JetsetPyro
- · Replies 8 ·
Finding the magnitude of vector A - B
- chocolatelover
- · Replies 10 ·
How Do You Calculate the Required Throwing Speed in Projectile Motion?
- P(physics)DD
- · Replies 11 ·
Is Direction Considered in Determining Resultant Electric Field Strength?
- v_pino
- · Replies 4 ·
Calculating Fmax and Fmin for an inclined block with static friction
- TLeo198
- · Replies 4 ·
.Finding Height and Speed of Stone Impacting a Cliff
- iamkristing
- · Replies 4 ·
Potential difference of an electron
- zbtzylong
- · Replies 4 ·
Max Tension Force for Box Not to Slip: 24.5N
- zellster87
- · Replies 2 ·
Newton, freefall acceleration problem
- bengt2665
- · Replies 4 ·
What Is the Power of a Sound Source Emitting 80dB at 30m?
- DylanB
- · Replies 2 ·
Cross product and dot product scalars
- TS656577
- · Replies 13 ·
How Do Tension and Friction Affect Motion in a Two-Block System?
- sracks
- · Replies 1 ·
How Do You Calculate Equivalent Capacitance with a Middle Capacitor?
- bassplayer142
- · Replies 1 ·
Positive direction of the X axis?
- lgen0290
- · Replies 6 ·
Find magnitude and direction of these vectors
- chocolatelover
- · Replies 4 ·
Solving Linear Motion: Car Acceleration
- Cantworkit
- · Replies 1 ·
The speed of a bullet may be determined by allowing the bullet to pass throu
- XxBollWeevilx
- · Replies 9 ·
Why Is a Motorcycle More Aerodynamically Affected Than a Truck?
- khalid00
- · Replies 1 ·
Vehicle Aerodynamics: Motorcycle vs Truck
- khalid00
- · Replies 1 ·
Friction Problems In Two Dimensions
- datsunking1
- · Replies 2 ·
How Is Horizontal Distance Calculated for a Golf Ball in Flight?
- Lacy
- · Replies 16 ·
Work done by applied force pulling a block up an incline
- jaded18
- · Replies 8 ·
Projectile motion and time [SOLVED]
- annersmarie
- · Replies 5 ·
Do AC Circuits Combine Coherently at 60Hz?
- Idea04
- · Replies 2 ·
Thermodynamics Finding a fundamental equation.
- corr0105
- · Replies 2 ·
Calculate Electric field from two point charges
- mikehibbert
- · Replies 6 ·
How Can We Determine the Motion of a Compound Harmonic Mechanical System?
- qspeechc
- · Replies 1 ·
Percentage uncertainty and percentage error
- david18
- · Replies 1 ·
Acceleration of 2 kg Stone Dropped from Cliff
- kataran
- · Replies 2 ·
Extreme Sports: Waterboarding and Physics (Work/Tension)
- minimax
- · Replies 1 ·
Solving a Momentum Problem: Calculating Force and Barrel Length
- roughneck84
- · Replies 7 ·
Will the Rope Hold the Archaeologist Safely?
- Eeroygirl
- · Replies 2 ·
What is the excess charge on the surface of the earth?
- gallib
- · Replies 3 ·
What is the Velocity of a Mass on an Unstretched Spring System?
- Bingo1915
- · Replies 2 ·
How Does Accelerating on an Incline Affect G-Force?
- IMK
- · Replies 1 ·
What Determines the Electrical Force on a Charge Inside a Spherical Shell?
- breez
- · Replies 22 ·
Rotational Dynamics: Turbine Spins 3600 RPM to Coast
- novicephysics
- · Replies 1 ·
Forces to push a trolley up a slope
- rofique2
- · Replies 1 ·
Girl on a swing: maximum speed and energy conservation
- XxMuDvAyNexX
- · Replies 1 ·
How to find the speed and direction of propagation from the wave equation?
- kreb
- · Replies 2 ·
What Are The Magnitudes of Forces in a Tractor Pulling Contest?
- jsirving
- · Replies 1 ·
Tension and resonant frequency in string over two pulleys with hanging mass
- physicsbhelp
- · Replies 76 ·
How Fast Was the Stone Thrown If It Hits the Ground at 45 Degrees?
- bengt2665
- · Replies 1 ·
Equivalent capacitance of an infinite capacitor chain
- Vanessa23
- · Replies 2 ·
Angular momentum question - Strange silly mistake
- rohanprabhu
- · Replies 2 ·
Mountain Climbing: Solving Uneven Tensions in Rope
- kittymaniac84
- · Replies 1 ·
Satellite geometry physics problem
- linnus
- · Replies 1 ·
How Is Electric Potential Difference Calculated?
- daimoku
- · Replies 3 ·
Acceleration Lab: Homework Statement Analysis
- dranseth
- · Replies 3 ·
Can a 1.7m person see their full reflection in a 0.85m mirror on the wall?
- jimbo43
- · Replies 8 ·
Explaining Gauss Law: Easy Guide
- pink_ele
- · Replies 4 ·
Calculating Potential Difference in a Charged Pipe Using Gauss's Law
- gathan77
- · Replies 3 ·
Determining the coefficient of friction? (example inside)
- Nonchalant
- · Replies 1 ·
How Can You Correct These Physics Calculation Errors?
- Ultimeaciax
- · Replies 1 ·
4 questions about distance travelled and magnitude of displacement
- Kelan
- · Replies 4 ·
How Does Compression Work Differ for Van der Waals Gas vs. Ideal Gas?
- corr0105
- · Replies 1 ·
A rocket moves through outer space at 11,000 m/s.
- Dan Carringto
- · Replies 3 ·
How Much Current Flows in the Circular Loop When the Net Magnetic Field Is Zero?
- buckeyes
- · Replies 1 ·