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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Circular Motion: 2-step System (very confusing)
- asc3nd
- · Replies 4 ·
Calculating Energy Crossing Area in Uniform Fields
- Kris1120
- · Replies 1 ·
Velocity of Pendulum at a certain point
- grantrudd
- · Replies 4 ·
Angular velocity of disk with hanging masses after 2 seconds
- Mugen112
- · Replies 2 ·
How Is Centripetal Force Calculated for a Bird Pulling Out of a Dive?
- Fractal314
- · Replies 1 ·
Can centripetal acceleration be nonzero when tangential acceleration is zero?
- Brit412
- · Replies 2 ·
According to physics, why don't raindrops kill you?
- annablax
- · Replies 2 ·
Newtonian Physics Lab- Uncertainty and Angular Momentum
- ultrapowerpie
- · Replies 4 ·
Angular Acceleration: Find Angle in 2 Seconds
- omgitsmonica
- · Replies 1 ·
How Is Rotational Kinetic Energy Calculated for Two Balls on a Rod?
- dsptl
- · Replies 10 ·
Best way to discharge a capacitor
- slammer
- · Replies 1 ·
What Is the Correct Method to Calculate the Orbital Period of GPS Satellites?
- rsfancy
- · Replies 3 ·
Finding release angle of 80cm pendulum with 0.60kg bob using energy conservation
- maniacp08
- · Replies 1 ·
Problem With Work Done by a Spring Force
- Senrai
- · Replies 4 ·
Amusement Park Centripetal Force Around A Loop
- GoSS190
- · Replies 2 ·
Spring, Friction, Incline, Mass moving up a Ramp
- twilos
- · Replies 6 ·
I got the formula, what does the angle effect? Net Magnetic force
- mr_coffee
- · Replies 4 ·
Momentum and Collisions of a particle
- nastassja
- · Replies 2 ·
Finding index of refraction using wavelength and 2 angles?
- maxfails
- · Replies 3 ·
Orbital Radius of 15 Geostationary Satellites for 14 Daily Passes
- masterofphys
- · Replies 1 ·
How to specify the direction of Friction force
- UNknown 2010
- · Replies 9 ·
Proton Beam therapy (magnetic field)
- tombroz
- · Replies 2 ·
Forces on a body in contact with a horizontal plane
- eatingblaa
- · Replies 12 ·
How Much Pressure Is Required to Compress an Iron Block by 0.16%?
- zyphriss2
- · Replies 1 ·
How Do I Calculate Arrow Velocities Using a Ballistic Pendulum?
- Jdpaul88
- · Replies 1 ·
Basic Time Dilation and Relativity Questions
- Epsillon
- · Replies 1 ·
Find minimum stopping distance of a car
- evan b
- · Replies 1 ·
Finding the expression of the bullet's speed, vB
- lmc489
- · Replies 25 ·
Work and Spring Stiffness Constant
- sugarntwiligh
- · Replies 3 ·
Which Elevator Movement Requires the Least Force to Move a Crate?
- rulzwrld
- · Replies 5 ·
Elastic Collision of a Ball and Block on a Wire
- emmi1987
- · Replies 3 ·
What is the original maglev car experiment equation
- Jordan Byrd
- · Replies 1 ·
Finding Magnetic Field at Point P
- 0338jw
- · Replies 1 ·
What is the average force exerted by the ball on the wall
- Chrisleo13
- · Replies 3 ·
Projectile Motion: Finding Height & Time for Archer's Target Shot
- harrycc
- · Replies 5 ·
Calculating Kinetic Energy of a Rotational System with a Hanging Weight
- CaptainSFS
- · Replies 3 ·
How is Work and Energy Calculated in a Horizontal Table Setup?
- Kudo Shinichi
- · Replies 2 ·
Centripetal Force in an amusement park ride
- GoSS190
- · Replies 13 ·
Jumping into a pool from a balcony
- rkiraly
- · Replies 1 ·
Finding strain of a marble column with stress and Young's modulus
- zyphriss2
- · Replies 2 ·
Finding block positions after doing 8.0 J of work on a spring
- AnnieD
- · Replies 15 ·
How to Calculate the Maximum Resultant of Two Vectors?
- rkiraly
- · Replies 3 ·
How to Calculate Drift Velocity in a Hall Effect Experiment?
- Staple Gun
- · Replies 2 ·
Force needed to hold a wheel with axle still against cord tension
- thepanda
- · Replies 4 ·
How Is the Mass of the Target Nucleus Calculated in an Elastic Collision?
- Emendez3
- · Replies 2 ·
How can I solve 1-D kinematics problems with limited resources?
- Imabur.
- · Replies 3 ·
How Do You Calculate Bullet Speed in a Ballistic Spring System?
- jemstone
- · Replies 1 ·
Find the resistance of the lamp
- shinobi12
- · Replies 2 ·
How Do You Calculate Resistor Values in a Circuit?
- shinobi12
- · Replies 3 ·
What is the average pressure exerted on the other pedestal.
- lokal704
- · Replies 6 ·
What is the Mass of Meter Stick in Sketch?
- jammhawk
- · Replies 5 ·
Centripetal acceleration automobile problem
- Haniszmi
- · Replies 1 ·
Centripetal Force Problem: Calculating Speed of a Model Airplane on a String"
- Haniszmi
- · Replies 3 ·
How Far Does a Rolling Coin Travel Before Stopping?
- Leid_X09
- · Replies 1 ·
Conservation of Energy and a spring
- maniacp08
- · Replies 2 ·
Current in wire that's being held up magnetic field of two others
- Sasha26
- · Replies 4 ·
Calculate minimum speed of an object in circular motion
- johnarma
- · Replies 3 ·
How Far Does the Hockey Puck Travel in 9 Seconds?
- aquapod17
- · Replies 1 ·
Parallel and Series Homework: Calculating Voltages and Charges
- jaredmt
- · Replies 3 ·
Find the intial velocity given the coefficient of kinetic friction
- ScullyX51
- · Replies 3 ·
Projectile motion of a ball launch
- southernbelle
- · Replies 6 ·
How Does Changing the Voltmeter Affect Potential Difference Readings?
- sallyishyper
- · Replies 1 ·
How to Calculate Frictional Force on a Moving Cart?
- PsyPhysics7
- · Replies 2 ·
Trying to find orbital radius of a satellite
- masterofphys
- · Replies 1 ·
Tangential and radial components of acceleration - answer seems odd
- Vanessa23
- · Replies 1 ·
Potential energy of a particle
- steelydan8821
- · Replies 14 ·
Moving Blocks Connected by a spring
- Deadsion
- · Replies 6 ·
Worker pushes 1800 N box with 200 N force on frictionless floor
- steelydan8821
- · Replies 6 ·
Electric potential and velocity of a proton
- Foxhound101
- · Replies 8 ·
Radius of curvature of 1 MeV electron in 1 Tesla B field
- tuathan
- · Replies 1 ·
Typing the rho symbol for density in Google Docs
- Banaticus
- · Replies 6 ·
What is the initial velocity of the bullet when it is shot into the block?
- steelydan8821
- · Replies 2 ·
3 concentric shells - potentials
- alexmahone
- · Replies 5 ·
Capacitors/Opening Circuit/Charge
- ma3088
- · Replies 1 ·
Finding y coordinate of center of mass for inverted U made of three rods
- Quickster357
- · Replies 3 ·
Momentum, conservation of momentum
- Jessicaelleig
- · Replies 2 ·
How Do You Calculate Error Propagation for Logarithmic Functions?
- prize fight
- · Replies 1 ·
Find the Tension in the rope ( really simple )
- rulzwrld
- · Replies 3 ·
Which mass accelerates faster than g in a pulley system?
- asi123
- · Replies 16 ·
Solving a Wheatstone Bridge with 5 Resistors
- katrascythe
- · Replies 2 ·
What is the direction of I2 in this circuit?
- StephenDoty
- · Replies 10 ·
How Does Train Acceleration Affect Projectile Firing Angle for Maximum Distance?
- Lamoid
- · Replies 1 ·
Angular motion problem involving a car coming to a stop
- xregina12
- · Replies 3 ·
Hanging a Mirror: Find Optimal Size for Dressing Room
- sarahefried
- · Replies 1 ·
Scale drawing with Cartesian solution and Polar representation
- mmd123
- · Replies 1 ·
Finding coefficient of kinetic friction when a mass overcomes pulley friction
- sugarntwiligh
- · Replies 1 ·
How Large Must the Force Be to Keep the Crate Moving at Constant Speed?
- HeavOnEarth
- · Replies 1 ·
Magnitude of force during a tug of war
- bmandrade
- · Replies 1 ·
Emf and internal resistance of a battery
- StephenDoty
- · Replies 11 ·
Kinetic friction free body diagram
- bmandrade
- · Replies 10 ·
How Is Work Done by Friction Calculated for a Crate Pulled at a Constant Speed?
- JSmith2009
- · Replies 1 ·
Find masses on an equilibrium plane
- Naldo6
- · Replies 1 ·
Finding Velocity given x and y velocities
- MrMiguel
- · Replies 2 ·
A couple Force, work, KE, and spring problems I'm working on.
- raven2783
- · Replies 3 ·
Sign conventions for weight components on a frictionless incline
- korters
- · Replies 1 ·
Floating test tube oscillating on water: finding the period
- Hareesh
- · Replies 2 ·
Physics olympiad - electrostatics
- alexmahone
- · Replies 32 ·
A Problem on Simple Harmonic Oscillations
- Hareesh
- · Replies 1 ·
Problem related to Simple Harmonic Oscillations
- Hareesh
- · Replies 4 ·
Solving Horizontal Rifle Bullet Gravity Problem
- nasjo30
- · Replies 1 ·