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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Optical absorption in Semiconductors
- Defennder
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Which Liquid Requires More Volume to Conceal a Coin: Oil or Water?
- jakey
- · Replies 1 ·
Will an image appear larger or smaller in oil than in water
- jakey
- · Replies 1 ·
Calculating Melon Coordinates on a Parabolic Bank: A Physics Problem"
- Sunnie
- · Replies 1 ·
Determine the ratio of the times for the one-bounce and no-bounce throws
- Sunnie
- · Replies 1 ·
Possible positions of object in magnified concave mirror?
- hds29ka
- · Replies 1 ·
Frictional Force: Inclined Projectile Returns with Half Speed
- zpt3593
- · Replies 3 ·
Finding Zero Potential between Two Charges: Using the V=kQ/d Equation
- Innuendo
- · Replies 2 ·
Cannon launch around Mercury with reduced gravity
- Sunnie
- · Replies 2 ·
What Is the Acceleration of a Train Slowing Down on a Curve?
- Sunnie
- · Replies 1 ·
What is the distance of the image to this lense
- xinlan
- · Replies 2 ·
Angle between rays emerging from isosceles prism with 23-23-134 degrees
- ronny45
- · Replies 4 ·
Work Question - 4.31 kJ Answer
- jj8890
- · Replies 6 ·
Is the concentration outside and inside the neuron important?
- harrow275
- · Replies 2 ·
Work done by water resistance on a 14 m/s skier at 35°
- soul5
- · Replies 7 ·
Purcell's Electricity and Magnetism - question
- apw235
- · Replies 1 ·
Can Static Friction Exist on a Moving Bicycle on a Flat Track?
- A_lilah
- · Replies 2 ·
Minimum speed for salmon to jump a 0.55m waterfall 2m away at 32°
- princesspriya
- · Replies 6 ·
Cat and Momentum: Final Speed of Sled 2 in Ice Sled Jumping Problem
- NAkid
- · Replies 1 ·
Energy of 1.7 mol of photons at 0.28 μm wavelength
- BuBbLeS01
- · Replies 1 ·
What is the energy dissipated in the wire?
- 743344
- · Replies 2 ·
What Is the Net Electric Field Midway Between Two Charged Particles?
- physicsbhelp
- · Replies 67 ·
Change of Momentum of 4.5 kg Object at 53° Angle
- cstout
- · Replies 1 ·
Terminal voltage with three equal resistors in a battery circuit
- mer584
- · Replies 1 ·
Finding the final distance of the dog from the shore
- NAkid
- · Replies 7 ·
Understanding Spring Stretch in Hooke's Law
- torresmido
- · Replies 3 ·
Calculate Speed of Electron from Charge Density
- tony873004
- · Replies 1 ·
Cart pulled by rope at 20.2° with friction
- katye
- · Replies 9 ·
Gravitation Force Using Differentials
- BitterSuites
- · Replies 18 ·
Magnetic Flux through a Loop Calculation
- BuBbLeS01
- · Replies 2 ·
Work done on the jet by the catapult
- kittymaniac84
- · Replies 3 ·
Why Does Reversing Current Source in EMF Problems Work?
- joker_900
- · Replies 1 ·
Projectile motion of a baseball problem
- princesspriya
- · Replies 3 ·
Gravitational potential energy of skier
- kittymaniac84
- · Replies 5 ·
How does surface hardness affect ball bounce height?
- kevinli123
- · Replies 1 ·
Two or more different equipotential surfaces to intersect?
- soul
- · Replies 3 ·
How Fast Was Anna Driving Before the Collision?
- wonderclass07
- · Replies 1 ·
Electric Field and Charge Density
- jesuslovesu
- · Replies 1 ·
Velocity vs. time graph for U = k|x| potential
- Gear300
- · Replies 4 ·
How high does cheese rise when released from a compressed spring?
- clope023
- · Replies 16 ·
What's wrong? Electron acceleration
- studypersist
- · Replies 2 ·
Solving Tilted Axis Friction Problems
- Maximillien
- · Replies 1 ·
How Is Impulse Calculated in Soccer Ball Deflection?
- physicsgrouch
- · Replies 2 ·
How Much Work Does a Mover Do to Push a Refrigerator Up a Ramp?
- glasshut137
- · Replies 1 ·
Ballistic Pendulum Experiment: Determining Muzzle Velocity and Projected Height
- schreibers
- · Replies 2 ·
Electric field affecting a charged particle question
- crispy_nine
- · Replies 1 ·
Finding the Damping Constant for a Hard-Boiled Egg on a Spring
- TFM
- · Replies 7 ·
Pendulum and roating disc (circular motion)
- bmchenry
- · Replies 1 ·
Particle in a Box: Find Potential Energy U of x
- cscott
- · Replies 7 ·
Finding the Angle Phi in a Gravity-Affected System
- radagast_
- · Replies 4 ·
Time for a bomb to hit the ground
- tzek
- · Replies 1 ·
Why does the initial velocity of a bouncing ball increase with each bounce?
- NKKM
- · Replies 22 ·
Find the size of the force due to wind and rolling friction
- am08
- · Replies 4 ·
What Is the Minimum Power Output for a 68.8kg Athlete Climbing 4.74m in 8.70s?
- opqpop
- · Replies 3 ·
A block collides with a horizontal spring
- ohhi
- · Replies 2 ·
How to calculate average braking force from velocity and stopping time
- The_Nutt
- · Replies 4 ·
How Can a Spring-Loaded Camming Device Be Built to Maximize Weight Support?
- captnbunny
- · Replies 2 ·
How do I fix my logic flow?
- jesuslovesu
- · Replies 2 ·
What is the maximum horizontal distance it can jump?
- the.flea
- · Replies 3 ·
Solved: Gauss's Law Problem w/Infinite Slab of Charge
- awvvu
- · Replies 2 ·
In what direction should the aircraft head?
- razored
- · Replies 7 ·
Equilibrium of a Rigid Body question
- Lamoid
- · Replies 7 ·
Bending stress of beam in contact with a flat surface?
- cabellos6
- · Replies 1 ·
Angle between velocities in 2D completely inelastic collision
- hateAleen
- · Replies 2 ·
How Do You Calculate Tension in Strings for a Rotating Ball?
- sailsinthesun
- · Replies 1 ·
Conical Pendulum Homework: Determine Force, Find Radial Acceleration
- sailsinthesun
- · Replies 1 ·
Maximum speed of object between 2 springs
- rolodexx
- · Replies 6 ·
Two metal spheres, one neutral and one charged, brought into contact
- apnut821
- · Replies 1 ·
What is the acceleration of a snowboarder when turning on a slope?
- rugalas
- · Replies 2 ·
Does lifting a mass faster require more work or just more power?
- platina
- · Replies 4 ·
How Do You Calculate Percent Error in a Conservation of Energy Lab?
- bwilhelm
- · Replies 1 ·
Calculating Roller Coaster Speed at Top of Loop-the-Loop
- sracks
- · Replies 1 ·
How Does Uniform Angular Acceleration Affect Wheel Rotation Over Time?
- adstroud
- · Replies 1 ·
Electric field of a dipole along the y-axis
- paulyspike
- · Replies 1 ·
What is the electric field at the center of curvature of an arc?
- Thomas_
- · Replies 3 ·
Parallel plate capacitor problem
- smithnh
- · Replies 1 ·
Dropping the ball (HEEEEEEEELP)
- sugarboyae
- · Replies 11 ·
Potential Energy on an ideal spring
- clope023
- · Replies 11 ·
Hockey puck sliding, basketball jump, car skidding, and bucket in well
- wakejosh
- · Replies 7 ·
Calculating Tension in Cables for 17.0 kg Speaker
- kappcity06
- · Replies 2 ·
The z coordinate of the center of mass of the box
- hateAleen
- · Replies 2 ·
RC circuit time constant before and after switch closes
- bassplayer142
- · Replies 3 ·
Finding the density of a 1938 nickel coin
- n77ler
- · Replies 1 ·
Difficulty with non-inertial frames
- anomalous
- · Replies 1 ·
Divergence theorem requires a conservative vector field?
- jesuslovesu
- · Replies 1 ·
How Long Will a Rocket with Time-Dependent Thrust Stay Airborne on Mars?
- JinFTW
- · Replies 6 ·
What Is the Amplitude and Period in Forced Oscillation?
- ~christina~
- · Replies 6 ·
Prove Electric Force on Triangle ABC Lies on Bisector
- sma
- · Replies 5 ·
Electric field given electric potential
- 743344
- · Replies 2 ·
Simple Problem, I think theres not enough information
- zZhang
- · Replies 1 ·
Coefficient of kinetic friction adding
- A_lilah
- · Replies 2 ·
Sprint Acceleration and Time to Top Speed Calculation
- sprinter08
- · Replies 2 ·
What Are the Steps to Solve These Physics Problems on Motion and Forces?
- luvzdaladeez
- · Replies 2 ·
Calculating Distance Between a Window and a Roof in Freefall
- PhysWalk
- · Replies 4 ·
How Fast is the Baseball After Being Hit 24.6m Up?
- cstout
- · Replies 8 ·
Helicopter Speed Relative to Ground: Solve w/ Vector Components
- Delber
- · Replies 1 ·
How Does Uniform Angular Acceleration Affect Rotation Angles Over Time?
- JSapit
- · Replies 3 ·
Egg drop experiment with weight drop and impact tests
- steph555
- · Replies 1 ·
Angular acceleration of a computer disk
- JSapit
- · Replies 1 ·