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 Do Normal Forces Affect Various Systems in Physics Problems?
- mattystew
- · Replies 15 ·
How Do Archery, Helicopters, and Physics Intersect in Competitive Scenarios?
- greener1993
- · Replies 2 ·
So how do you solve for v2?Finding Velocity After Acceleration?
- SoConfused__
- · Replies 3 ·
General Application of Boyle's Law
- huzi94
- · Replies 1 ·
Finding final Velocity given mass, force, and displacement
- Bearbull24.5
- · Replies 4 ·
Young's Slit Interference (Double Slit)
- singinglupine
- · Replies 2 ·
Simple average speed/average velocity problem
- SoConfused__
- · Replies 2 ·
Finding the speed of a trebuchet
- zewei1988
- · Replies 1 ·
Determining the Level of Mercury in U shaped tube
- Frostfire
- · Replies 1 ·
Finding dl in cylindrical coordinates for a curved wire
- vwishndaetr
- · Replies 1 ·
Bullet fired upward with air resistance proportional to speed
- espenth
- · Replies 3 ·
Calculating Work Done by a Beaver in Building a Dam
- sheepcountme
- · Replies 6 ·
Normal force - object sliding with velocity
- mybrohshi5
- · Replies 9 ·
Hall Effect Experimental Results Issue
- K29
- · Replies 1 ·
Electric charge on hollow spherical conducting shells Gauss's Law(?)
- offbeatjumi
- · Replies 1 ·
What is the pressure of nitrogen when cooled to -5oC?
- ar202
- · Replies 1 ·
Minimum distance for alpha particle approaching zinc nucleus
- victoriafello
- · Replies 15 ·
Positronium atom transition - energy of photon
- quietrain
- · Replies 2 ·
Calculating Mass Increase of Earth in a Day Due to Solar Energy
- quietrain
- · Replies 2 ·
Concerning Elastic collisions and Kinetic energy
- neeraj93
- · Replies 5 ·
Find the work done on a box on an inclined plane
- popo902
- · Replies 1 ·
Why use partial derivatives for power change in a resistor
- Livethefire
- · Replies 2 ·
Coefficient of static friction of clothes
- tquiva
- · Replies 1 ·
How Much Work Do Mules Perform Pulling a Barge?
- mparsons06
- · Replies 1 ·
(CHALLENGING )Trigonometry / geometry proof
- Doctor_Doom
- · Replies 2 ·
Force to keep photon in circular motion
- quietrain
- · Replies 1 ·
Stopping a Baseball: Work, Force and Calculation
- rechitzy
- · Replies 1 ·
Calculating Min Work for 800kg Car on 9.0° Incline
- cmed07
- · Replies 4 ·
Finding the tangent acceleration of a car going around a loop.
- btbam91
- · Replies 2 ·
How Can I Prove the Centripetal Force Equation f=mrw^2 Using Experiments?
- magicjambon
- · Replies 5 ·
Why Doesn't This Work - Easy Kinematics
- erok81
- · Replies 12 ·
Gibbs Free Energy of Van Der Waals Gas
- HalfManHalfAmazing
- · Replies 8 ·
What is the reaction of the ground on a ball rebounding from a 5m drop?
- tongtong1993
- · Replies 3 ·
Electric Field Velocities from Point A to Point B
- drprevet
- · Replies 1 ·
Acceleration of an Object Hanging from a Rope on a Moving Boxcar
- allora_97
- · Replies 1 ·
System involving gravity and electric field
- Lavas
- · Replies 8 ·
How Do You Determine the Length L in a Compressed Air and Mercury Experiment?
- Frostfire
- · Replies 5 ·
Solving Force of Elevator on Person: 0.6 kN?
- allora_97
- · Replies 4 ·
Calculating Number of Turns Needed for Generator
- matt72lsu
- · Replies 5 ·
Friction and air resistance of a car travelling down a hill
- lakefall
- · Replies 4 ·
Work lifting cable and work pumping water
- demonelite123
- · Replies 1 ·
Finding the Coefficient of Static Friction on a Banked Curve
- mparsons06
- · Replies 1 ·
SHM mass and spring constant with given frequency
- k77i
- · Replies 4 ·
What is the Mass of a Spherical Planet?
- mparsons06
- · Replies 1 ·
Calculating Average Speed and Acceleration for a Fastball
- ckaybabii
- · Replies 8 ·
Why does velocity equal radius times angular velocity?
- johnps
- · Replies 4 ·
Newton's Third Law and Pulley system
- StephenDoty
- · Replies 8 ·
Period of an Electron Around a Magnetic Field
- bleedblue1234
- · Replies 2 ·
Angular Momentum - Find angular velocity of a hanging bar after a collision
- cheinbokel
- · Replies 1 ·
Calculating the gauge pressure?
- miamirulz29
- · Replies 1 ·
Ice in a bowl - work done by gravity
- mybrohshi5
- · Replies 5 ·
Equation for torque of a cylinder, a hollow cylinder, and a sphere.
- nlingraham
- · Replies 3 ·
Comparing velocities after collisions with springy vs inelastic objects
- Glorzifen
- · Replies 1 ·
Frequency At Amplitude of Voltage Across Capacitor Decreases
- mmmboh
- · Replies 3 ·
Calculating Escape Velocity and Energy Requirements for Ceres
- x-mather
- · Replies 3 ·
How Do You Solve Challenging Physics Problems in Nuclear Engineering Interviews?
- beuller34
- · Replies 1 ·
How is the amount of energy dissipated by friction calculated?
- cmed07
- · Replies 5 ·
Impulse: Clay ball that sticks vs. Rubber ball that bounces?
- Glorzifen
- · Replies 3 ·
Do the current elements I1L1 and I2L2 produce a force on each other?
- martinezwsu
- · Replies 12 ·
Calculating Time and Velocity for Moving Charged Objects
- Atran
- · Replies 5 ·
Mathematica notebook not working
- Shukie
- · Replies 1 ·
Question on work,energy and power
- matsci0000
- · Replies 4 ·
How to Calculate Resistance and Voltage in Combination Circuits?
- jeffc93
- · Replies 1 ·
How Is Impulse Calculated for a Tennis Ball Hitting a Wall?
- amazondog
- · Replies 7 ·
What is the lenght of the lever arm? (when torque and force are given)
- DeeAussie
- · Replies 4 ·
Capacitor size needed to store 20 MW for three days
- Hotsuma
- · Replies 4 ·
What is the Velocity of the Second Ship Relative to the First Ship?
- jwxie
- · Replies 2 ·
Image formed by concave mirror; completed need someone to check
- hodgepodge
- · Replies 3 ·
Two objects are connected by a string of negligible mass
- bahamut1111
- · Replies 6 ·
Object distance for image on itself in water-filled concave mirror
- kihr
- · Replies 5 ·
Finding capacitance/dimensional analysis
- Linus Pauling
- · Replies 1 ·
Proof of Gauss's law using coulomb's law
- demonelite123
- · Replies 2 ·
Conservation of momentum problem (I think?)
- downwithsocks
- · Replies 4 ·
How Do You Calculate Heat Transfer in Thermodynamic Cycles?
- racky tak
- · Replies 1 ·
How Do Potential Dividers Work with Constant V(input)?
- evry190
- · Replies 10 ·
A pair of oppositely charged, parallel plates are separated
- lilkidyea
- · Replies 6 ·
Are the columns linear independent?
- lastlanding
- · Replies 1 ·
Calculating Voltage Across R1 in an RC Circuit with a Capacitor
- caramelgt
- · Replies 4 ·
Frictionles force problem with hanging mass
- Shapeup
- · Replies 2 ·
How Does Motion Affect Sound Frequency and Wavelength Calculation?
- Ronaldo21
- · Replies 3 ·
Solve Tangential Speed Equation: Planet Radius 5.99x10^6 m, G-Accel 7.87 m/s^2
- Ripcurl
- · Replies 1 ·
Solving Physics: Chris the Inventive - Acceleration & Force
- bahamut1111
- · Replies 2 ·
Electric force between balloon and denim separated by 6.0 cm
- Dumb4Physz
- · Replies 1 ·
Smaller and larger resistance in circuit
- nothingatall
- · Replies 1 ·
Electric field of a line charge and point charge
- GravityGirl
- · Replies 14 ·
Frequency heard, need someone to check
- hodgepodge
- · Replies 1 ·
Do two stars with unequal mass exert equal gravitational forces on each other?
- rilkesorpheus
- · Replies 1 ·
Finding Spring Stiffness and Effective Mass for Suspended Beam
- rock.freak667
- · Replies 1 ·
Magnetic flux through the circular cross-sectional area of the solenoid
- Kourtney0115
- · Replies 3 ·
Calculating DeltaE for a Gas Expansion
- liftedrifter
- · Replies 1 ·
Calculating Sound Intensity Levels for a Baby's Parents
- hodgepodge
- · Replies 6 ·
How Does Throwing an Object Downward Affect Its Fall Time from a Tower?
- caller
- · Replies 1 ·
Measuring Laser Beam Intensity: Techniques and Equipment
- loo23
- · Replies 1 ·
Find Value of \alpha for Perpendicular Vector to Plane
- milan666
- · Replies 5 ·
Magnitude and direction of induced current with magnetic field
- skibum143
- · Replies 2 ·
Linear Momentum of A System of Particles
- STEF2098
- · Replies 5 ·
Elastic collision with 3 pool balls
- KaiserBrandon
- · Replies 3 ·
Finding Unit Normal Vector of 2 Vectors
- milan666
- · Replies 2 ·
What is the significance of graph intercepts in photocell experiments?
- salsabel
- · Replies 9 ·
Finding launch angles for a ball to pass through a window
- r1luher0
- · Replies 1 ·