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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Understanding Energy Conservation in a Hanging Spring System
- divineyang
- · Replies 6 ·
Work out entropy change of the universe
- bon
- · Replies 10 ·
Calculating Speed and Time Between Two Vehicles Heading to Mars
- jono90one
- · Replies 3 ·
Temperature at board and insulation interface in thermal conduction
- thereddevils
- · Replies 3 ·
Maximum Force on Inclined Plane to keep object stationary
- wainker
- · Replies 1 ·
How Do You Calculate the Magnitude of the Second Force?
- ancase21
- · Replies 1 ·
How Do Electron Wavelengths Influence Diffraction Patterns?
- hmsmatthew
- · Replies 1 ·
Perfectly Inelastic momentum question
- Jm4872
- · Replies 1 ·
Charged Spheres Placed in an Electric Field, Suspended by Strings
- TheSoftAttack
- · Replies 3 ·
Train acceleration from passing cars problem
- atypical
- · Replies 1 ·
Max Voltage Induced in Rotating Coil
- roam
- · Replies 5 ·
What is the ratio between the speeds before and after a short rocket thrust?
- alex3
- · Replies 1 ·
Ratio of kinetic to potential energy on a frictionless slope
- NOP90
- · Replies 7 ·
Is the tension of the string in a yoyo the same when descending and ascending?
- weesiang_loke
- · Replies 4 ·
How Far Was the Spring Compressed in the Physics Problem?
- wondermoose
- · Replies 3 ·
Why does thin hair create a horizontal diffraction pattern?
- okgo
- · Replies 6 ·
Why does integrating v^-2 give -1/v + 1/vi instead of -1/v + C?
- atypical
- · Replies 1 ·
Geometrical optics, lens and image
- fluidistic
- · Replies 5 ·
Finding kinetic friction coefficient for 25 kg box on 26° ramp
- nintendude794
- · Replies 4 ·
Find acceleration of 2 Masses Joined By a Rope
- RoBrotV
- · Replies 1 ·
Finding where to start with partial derivatives
- Bman900
- · Replies 7 ·
Rocket physics equation problem
- mopar969
- · Replies 3 ·
How Long Does an Apple Stay in the Air When Thrown Upwards?
- doctordiddy
- · Replies 1 ·
Finding mass ratio for two primates swinging on vines
- elementis0
- · Replies 1 ·
What is the correct equation for calculating the currents in this circuit?
- roam
- · Replies 3 ·
How Does the Angle of Pulling Affect Kinetic Friction on a Box?
- pope17
- · Replies 1 ·
Finding bullet speed after passing through a tin can
- softball1394
- · Replies 6 ·
Force and Pulley Problem (Pic Included)
- Dcarroll
- · Replies 2 ·
Softball thrown to 15.2m height: finding PE and KE
- CeceBear
- · Replies 5 ·
Falling Object And Sound Takes 3.2sec
- TomFoolery
- · Replies 3 ·
Does frequency affect photoelectric current with no initial current?
- wany
- · Replies 8 ·
Calculating Electric Field Strength in a Charged Parallel-Plate Capacitor
- agnieszka2807
- · Replies 11 ·
Force between condensator plates
- player1_1_1
- · Replies 1 ·
CM of triangle with integration
- drugcpp
- · Replies 2 ·
Do couples always produce rotation?
- Andy21
- · Replies 2 ·
Elastic Restoring Force- Spring Constant
- ~Callaway~
- · Replies 1 ·
When is torque T = r(f cos θ) instead of T = r(f sin θ)?
- moondawg
- · Replies 1 ·
Electromagnetic Induction Related Circuit
- jwj11
- · Replies 13 ·
Calculate Time for Projectile w/ 12° Incline
- kLPantera
- · Replies 4 ·
How Do You Calculate Object Height in Lens Imaging?
- CuteWolf
- · Replies 1 ·
Rockets - and the law of conservation of momentum - 2 mark written answer
- dinosaurxxx
- · Replies 1 ·
Kinetic Energy Lost in Rotational Collision
- leventa2
- · Replies 1 ·
Maximum amplitude for ultrasonic transducer at 1.0 MHz without rupture
- <3Science
- · Replies 1 ·
Projectile motion absolutely puzzled
- robcowlam
- · Replies 4 ·
Friction on an ant on a spinning wheel in inertial vs non-inertial frames
- jumbogala
- · Replies 13 ·
Chip breaking off rotating disc: why angular speed unchanged?
- weesiang_loke
- · Replies 6 ·
Finding the x and y intercept of the line of action
- clickcaptain
- · Replies 4 ·
Two Physics problems related to gravitational energy
- chroncile
- · Replies 3 ·
Normal Force of Car Hitting A Bump
- Hypnos_16
- · Replies 5 ·
Is the Upward Force on a Bouncing Ball the Same as the Average Normal Force?
- issacnewton
- · Replies 4 ·
Kinetic Energy from Velocity Vector
- AdkinsJr
- · Replies 2 ·
Pressure Difference to Make Blood Flow Thru Artery
- dvolpe
- · Replies 1 ·
Particle Simple harmonic motion particle problem
- <3Science
- · Replies 1 ·
Find constant speed using mass and power
- DeerHunter
- · Replies 2 ·
Internal-Combustion Engine Prototypes Ranking Task?
- cupcake
- · Replies 4 ·
What is the Spring Amplitude Problem?
- <3Science
- · Replies 1 ·
How Does Changing String Tension Affect Beat Frequency?
- MozAngeles
- · Replies 4 ·
Simple torque equation question
- auk411
- · Replies 7 ·
Bullet embedded in block: speed, height, and energy loss
- pb23me
- · Replies 3 ·
How many windings needed to generate Peak emf
- musiliu
- · Replies 3 ·
Changes in Density of Water Vapor Under Constant Volume and Temperature
- renlok
- · Replies 1 ·
Conservation of Momentum in Perfectly Elastic Collisions
- pb23me
- · Replies 5 ·
RRC Circuit - Capacitor Charge?
- bchubz
- · Replies 2 ·
Angular position of Mars relative to Earth after one year
- Garrant3
- · Replies 3 ·
What Is the Minimum Distance Below a Pivot for a Pendulum String to Stay Taut?
- Raziel2701
- · Replies 1 ·
Torque required to move a bicycle
- ravi.nifty
- · Replies 4 ·
Conservation of Momentum of a point particle
- eprparadox
- · Replies 2 ·
Angular velocity of steel block pushed by angled thrust on rotating table
- helpppmeee
- · Replies 11 ·
Calculate in rad or deg mode for sin(wt)
- musiliu
- · Replies 1 ·
Acceleration and distance using derivatives.
- Bman900
- · Replies 8 ·
Relativistic momentum is 1% greater than classical, at what speed?
- chris_0101
- · Replies 2 ·
Voltage, capacity and the strength of electric field of a capacitor
- fawk3s
- · Replies 9 ·
Magnetic Field inside and outside wire
- Chip90
- · Replies 2 ·
Simultaneity and time dilation with moving observer
- loobloke
- · Replies 2 ·
Energy loss in a pulley, but cleverer
- helloxkitty
- · Replies 1 ·
Finding Compression Distance of Spring
- AdkinsJr
- · Replies 1 ·
How Does Air Resistance Affect Engine Force in Accelerating Airplanes?
- tine002
- · Replies 1 ·
What Are the Two Common Forms of the Mathematical Equation for Slope?
- 1337Montage
- · Replies 4 ·
Finding Restoring Force for Simple Harmonic Motion: 700g Cylinder in Water
- kimi70
- · Replies 1 ·
X-ray Diffraction, Intensity vs. Wavelength Graph
- Mxbn0
- · Replies 4 ·
Does Gravity Have Torque at the Pivot Point?
- auk411
- · Replies 1 ·
Phase Angle for Simple Harmonic Motion
- mneox
- · Replies 3 ·
Position of an oscillating piston
- Runaway
- · Replies 1 ·
2 derivations using the Conservation of Linear Momentum
- auk411
- · Replies 3 ·
What is the Angular Velocity of Two Combined Disks?
- andrewp7
- · Replies 1 ·
Rotation of Disc: Calculating Angular Velocity
- thereddevils
- · Replies 3 ·
What Is the Velocity of the Center of Mass of the Disk?
- ohheytai
- · Replies 7 ·
Thermodynamics: Final temp of Ice + steam?
- Tabatron
- · Replies 3 ·
Angular speed of a disk, given a force
- zalnas
- · Replies 4 ·
What is the Ideal Gas Law in Space?
- kikko
- · Replies 6 ·
Finding the first moment with respect to an axis.
- btbam91
- · Replies 1 ·
Is the Chair-O-Plane the Same as a Carousel?
- zak19
- · Replies 1 ·
How Do You Integrate Work with a Changing Angle Theta?
- morssolis
- · Replies 3 ·
Finding banking angle for a car on a frictionless curve
- wmrunner24
- · Replies 10 ·
Electron Force Between Parallel Plates
- ToffeeCake
- · Replies 6 ·
Finding the restoring force, Hooke's Law
- h8ligan
- · Replies 4 ·
Angular acceleration of a blender
- daltomagne
- · Replies 1 ·
Cooling rates for Hydrogen and Neon gas
- Point Conception
- · Replies 1 ·
How to calculate Work as area under the curve
- loganblacke
- · Replies 7 ·