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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Object travels half its path in the last second of free fall
- steven1495
- · Replies 5 ·
Electrostatic potential using method of images
- tomwilliam2
- · Replies 4 ·
Is there a simple formula when for getting the right sig-digs?
- student34
- · Replies 4 ·
Finding the Initial Velocity for a Projectile Launched from a Height of 150ft
- dronell90
- · Replies 9 ·
Why does time and space have to be relative?
- aaaa202
- · Replies 3 ·
What is the uncertainty in a squared quantity?
- lemin_rew
- · Replies 4 ·
Distance to bring car to a full stop
- DOA_Kasumi22
- · Replies 6 ·
Vectors and finding coordinates question
- Freemark
- · Replies 4 ·
Find the average velocity in the time intervals
- Alhanouf
- · Replies 1 ·
What is the Initial Velocity of a Cannon Ball Fired at 45 Degrees?
- derpingmath
- · Replies 6 ·
Circuit Problem with Resistors connected in parallel and series
- Souboro
- · Replies 1 ·
Why does a capacitor decrease current amplitude
- aaaa202
- · Replies 3 ·
How Much Power Should an LED Emit to Be Visible from 5 Meters?
- prehisto
- · Replies 9 ·
Finding the magnitude of the friction force.
- Ripe
- · Replies 7 ·
Change in Potential Energy levels of a body in Gravitational field.
- harjyot
- · Replies 9 ·
Changes in EMF due to a bar magnet falling through a loop of wire
- phosgene
- · Replies 5 ·
Motor power in pulley system with accelerating block
- emzee1
- · Replies 13 ·
Calculating Optical Cycles in Ultrashort Pulses
- johnroberts
- · Replies 4 ·
What coefficient of friction keeps the object from moving?
- ExtendedG
- · Replies 1 ·
Instantaneous Speed in a time interval
- Monkey618
- · Replies 7 ·
Free fall and distance traveled question.
- Freemark
- · Replies 2 ·
Linear Collisions; Conservation Law
- trulyfalse
- · Replies 2 ·
How Far is the Satellite from Earth?
- Feodalherren
- · Replies 5 ·
Conservation of Momentum/Mechanical Energy Question (Fairly Challenging)
- Quotexon
- · Replies 6 ·
Projectile Motion, finding minimum speed
- silvaramaxwel
- · Replies 2 ·
Basketball Projectile Motion problem
- PHYSICSownsME
- · Replies 1 ·
Time for one calculation at 6.9 × 10^7 calculations per second
- oldspice1212
- · Replies 6 ·
How to solve for vectors components
- warnexus
- · Replies 3 ·
Estimating the force of he water on the dutch boys finger
- Nellen2222
- · Replies 6 ·
How Much Work Do Each of the Forces Do on the Crate?
- DRC12
- · Replies 3 ·
Electric Potential Energy, Point Charges and velocity
- Northbysouth
- · Replies 1 ·
Finding the Kinetic Energy of Compton Scattering
- DODGEVIPER13
- · Replies 2 ·
Can a single lens save the day for the broken projector?
- Cathmore
- · Replies 1 ·
Calculating Specific Volume of Hydrogen at Given Pressure and Temperature?
- jg24
- · Replies 6 ·
Determine Planck's Constant from gradient
- ZedCar
- · Replies 2 ·
Finding acceleration in the system
- 1/2"
- · Replies 2 ·
Why Might Plotting log c Against log d Not Be the Best Test for Proportionality?
- Peter G.
- · Replies 3 ·
How Does a Submerged Object Affect Scale Readings?
- Nellen2222
- · Replies 4 ·
Is mass conserved in terms of Special Realitivity
- DODGEVIPER13
- · Replies 10 ·
Magnitude of normal force from ceiling to man
- DOA_Kasumi22
- · Replies 1 ·
How do Gullstrand's equations work?
- ShamelessGit
- · Replies 2 ·
How Do You Calculate the Height of an Elevator Approaching Its Floor?
- DOA_Kasumi22
- · Replies 1 ·
Magnitude and direction of current
- Steenrod
- · Replies 2 ·
How to find net electric force of zero
- davidflip
- · Replies 4 ·
Finding wavelength and wave speed in a sinusoidal wave.
- JustinLiang
- · Replies 7 ·
Finding the equivalent resistance of this circuit.
- lillybeans
- · Replies 12 ·
Stopping distance and time of a vehicle
- Lucaburra
- · Replies 3 ·
Thermodynamic constant volume process
- keevenh
- · Replies 2 ·
Time Dilation - Clock running slower?
- Peter G.
- · Replies 2 ·
Hydrogen atoms on collision (based on energy conservation)
- george2625
- · Replies 2 ·
Finding a spring constant of a car
- ChickysPusss
- · Replies 3 ·
Calculating Distance and Position of Two Moving Objects in 2D Space
- 7282
- · Replies 2 ·
How do you find centripetal force without knowing velocity?
- annamarie424
- · Replies 4 ·
Projectile Motion: Skateboarder on a Ramp
- DRC12
- · Replies 4 ·
Potential Difference of an Insulating Sphere
- TrueStar
- · Replies 6 ·
Why does every cable have 2 different tensions?
- Scintillation
- · Replies 2 ·
Finding the electric potential difference?
- hanyu
- · Replies 1 ·
Building a microscope with two different power lenses
- surfahgirl
- · Replies 1 ·
Finding stopping distance with force and mass using kinematics
- izelkay
- · Replies 5 ·
Why Do Balance Scales Stop Even If Unbalanced
- LaserWraith
- · Replies 6 ·
Train acceleration and braking over 1 km distance
- Ishida52134
- · Replies 7 ·
What Is the Acceleration of a Mass on a Spring at t = 4.30 s?
- howsockgothap
- · Replies 5 ·
Static Friction and Frictional Force Ranking Task
- William2
- · Replies 20 ·
Constant Velocity = positive net force? But how to write it?
- LearninDaMath
- · Replies 4 ·
Calculating Center of Mass with Added Particles
- phospho
- · Replies 6 ·
Simple fluids pressure question
- Iclaudius
- · Replies 3 ·
How Do You Calculate the Impact Point of a Bomb Released from a Moving Airplane?
- 33639
- · Replies 3 ·
Attraction of two spheres in deep space
- Feodalherren
- · Replies 13 ·
Acceleration function of velocity example
- renn12
- · Replies 1 ·
A cyclist moving on a level road
- norhh
- · Replies 6 ·
An Electron's Motion: Special Relativity in Action
- unscientific
- · Replies 3 ·
Object being dropped at different height
- diego1404
- · Replies 2 ·
Camera projection errors measuring length
- Insidium
- · Replies 2 ·
What is the impact of radiant pressure by the sun on cosmic dust?
- unscientific
- · Replies 4 ·
A parabolic force distribution is applied to a beam
- theBEAST
- · Replies 5 ·
Converging nozzle temperature difference - Steady flow energy equation
- Nuclear_eng
- · Replies 3 ·
Finding sample distance from objective in a microscope with 160mm tube length
- surfahgirl
- · Replies 1 ·
Magnetic Fields: Force on Charges Moving Perpendicular
- lizdrotos
- · Replies 1 ·
Calculating the Mass of a Ball with F = 9.5 N and θ = 28°
- Albeaver89
- · Replies 2 ·
Lens positions to focus a 2.0 cm candle flame on a wall 2.1 m away
- surfahgirl
- · Replies 2 ·
KE and speed of a sphere near a fixed charge
- jbarnhart5
- · Replies 4 ·
Circular Motion of a Ferris wheel
- 2Big2Bite
- · Replies 7 ·
How Does Doubling Speed Affect Centripetal Force and Acceleration?
- Feodalherren
- · Replies 14 ·
Inconsistent Expiremental Data of Two-Lens System
- ShamelessGit
- · Replies 4 ·
What is the reaction time for a batter facing a 45.0 m/s fastball?
- joe426
- · Replies 2 ·
Ball dropped from height h, travels 0.5h in final 1 second
- PhizKid
- · Replies 19 ·
How Much Energy Must a Cosmic Ray Have to Trace Back to Its Origin?
- SHISHKABOB
- · Replies 4 ·
How Does Changing Mass and Speed Affect Spring Compression?
- bcalkins
- · Replies 1 ·
Cannonball fired at 30° from 50 m building
- Myll
- · Replies 1 ·
Does Mass Affect Work Done in Pushing a Hay Bale?
- bcalkins
- · Replies 1 ·
Angular velocity using Newton's law
- Huumah
- · Replies 7 ·
Direction of Magnetic Force on a Moving Charge?
- Peter G.
- · Replies 2 ·
Acceleration given distance from earth (r)
- Pajarito
- · Replies 4 ·
How Is the Moon's Mass Calculated Using Satellite Orbit Data?
- steven1495
- · Replies 7 ·
Calculating the uncertainty in an A4 page
- ZedCar
- · Replies 1 ·
Solving for Normal Force between two objects
- Dyscalculiac
- · Replies 1 ·
Disc on thread orbiting cylinder with angular momentum
- kushan
- · Replies 10 ·
Calculating the components of vectors
- kgianqu2
- · Replies 5 ·
Centripetal force - Train on a curved track
- madmax321
- · Replies 8 ·