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 Forces Determine the Balance of a Supported Ruler?
- Miri
- · Replies 1 ·
Physics Problem: Work and Force on a Skier Coasting Uphill with Friction
- pvwill18
- · Replies 3 ·
How Do You Calculate Radial Acceleration and Velocity in Circular Motion?
- yitriana
- · Replies 1 ·
Electric field from uniform line charge at different distances
- peaceandlove
- · Replies 5 ·
Electric Flux Through a Square: 2.1µC @ 20 cm
- peaceandlove
- · Replies 3 ·
Finding equation of equlibrium for rod and two blocks
- KEØM
- · Replies 3 ·
Supposedly easy electromag question which I cannot do sadly.
- coffeem
- · Replies 11 ·
Magnetic field from point source
- Maxwellkid
- · Replies 1 ·
Electric field of a cylinderical insulator
- peaceandlove
- · Replies 2 ·
Ice Floats: Calculating Water Level Percent
- Miri
- · Replies 5 ·
Difficult question on pressure in liquids
- jontyjashan
- · Replies 29 ·
Does U-235's Higher Likelihood of Fission Make It More Useful Than U-238?
- textbooks
- · Replies 1 ·
Calculating Load on Pilot in Horizontal Curve Flight
- Miri
- · Replies 5 ·
Calculating Takeoff Time for an Aircraft
- Miri
- · Replies 3 ·
Calculating Work on a Box Moving up a Ramp: Physics Problem Help
- Puchinita5
- · Replies 15 ·
Momentum; bullet block of wood; distance; friction.
- General_Sax
- · Replies 2 ·
What is the speed of transverse waves on the rope?
- Luis2101
- · Replies 4 ·
Newton's II frcitionless surface, constant velocity, angle of incline
- freq_mod
- · Replies 3 ·
Pu-239 + 1N fissions into what?
- alancj
- · Replies 4 ·
Electromagnetic Induction and Waves
- jlmessick88
- · Replies 7 ·
Solving Diverging Mirror Homework: Size & Location of Image
- donotremember
- · Replies 5 ·
What is the acceleration and tension in this two-block system?
- Apprentice123
- · Replies 10 ·
Solve Physics Ramp Problem: Acceleration of Box
- ehump20
- · Replies 1 ·
How Do Braking Forces Affect Train Derailment Distances and Coupling Forces?
- Apprentice123
- · Replies 9 ·
Sphere describing a circle, find tension
- Apprentice123
- · Replies 7 ·
Tangential Acceleration of a Pendulum
- Sandman327
- · Replies 1 ·
Rotational Kinematics - Angle of a bar attached to a spinning rod
- bendezium
- · Replies 4 ·
Did I Solve the Equations for Statics and Friction Correctly?
- chrisyuen
- · Replies 2 ·
Power density calculation of Laser
- shyamavanil
- · Replies 2 ·
Converting Units: Microvolts to Volts and Picoseconds to Seconds
- I'm
- · Replies 6 ·
Normal Force on Vertical Plane
- bueckerjl
- · Replies 5 ·
Finding zero field point from +7.88 μC charge in uniform 300 N/C field
- mcassi17
- · Replies 3 ·
Resistances in Series or Parallel
- peaceandlove
- · Replies 4 ·
Confused? Wave Function Direction Explained
- chemic_23
- · Replies 1 ·
Calculating Sound Level Intensity with Multiple Jet Engines
- mortho
- · Replies 10 ·
What is the final temperate of the aluminum?
- Dave25
- · Replies 2 ·
What is the formula for finding the force of friction on an inclined surface?
- ace123
- · Replies 11 ·
Velocity as a function of radial distance on an elliptical trajectory
- psid
- · Replies 1 ·
How Is Maximum Car Acceleration Calculated with a Friction Coefficient of 0.30?
- tbaskerv
- · Replies 1 ·
How Is Tension Calculated in a String with Waves?
- kukulalalu89
- · Replies 3 ·
Pushing a lawn mower, total force exerted?
- tbaskerv
- · Replies 1 ·
A Lawn Mower and Newton's 2nd Law
- swede5670
- · Replies 8 ·
Internal Resistance in battery
- runfast220
- · Replies 10 ·
Two sinusoidal waves of the same period
- kukulalalu89
- · Replies 3 ·
Calculate the change in entropy of the cube-lake system
- kukulalalu89
- · Replies 3 ·
What is the entropy change of ice to water and water to vapor?
- kukulalalu89
- · Replies 3 ·
Where is the voltage potential zero given two points?
- xcmntgeek
- · Replies 1 ·
See if you can solve this tough one (energy and momentum)
- jmb07
- · Replies 2 ·
How Fast Will the Block Move After Being Released from the Spring?
- volraithe
- · Replies 1 ·
How Do You Solve These Physics Equations?
- jaimieee
- · Replies 17 ·
Sliding down incline with friction
- alan_g
- · Replies 1 ·
Child on a Merry-Go-Round: Calculating Angular Velocity After Moving Inward
- Steveadams79
- · Replies 4 ·
What is the period of a bobbing cork?
- alexander_i
- · Replies 2 ·
Solving Lens Image Problem: Where is Image Formed?
- jmb07
- · Replies 3 ·
What Energy Makes a Photon’s Wavelength 10 Times That of an Electron?
- azalonely
- · Replies 1 ·
Why does the area centroid formula for bar y have a factor of 0.5?
- chrisyuen
- · Replies 2 ·
Air pressure in a container then released
- talaroue
- · Replies 3 ·
Determining Leading Car's Velocity On TV Outage
- navya
- · Replies 4 ·
Hydraulic Jack Question: Calculating Piston Movement for 2000 kg Car
- frigid
- · Replies 3 ·
How Does Projectile Motion Apply in Olympic Ski Jumping?
- nerdmon
- · Replies 1 ·
Electrostatic Force: -0.7nC Charge at Origin
- peaceandlove
- · Replies 3 ·
Kinetic Energy (in eV) of He with given change in potential
- xcmntgeek
- · Replies 6 ·
How Do Forces Balance in a Spring-Mass System?
- orange300
- · Replies 1 ·
Trebuchet Help: Calculating Final Velocity & Acceleration
- elvalil
- · Replies 2 ·
Solving a Hydrostatic Problem: Cylinder Height in Water and Oil
- brykz
- · Replies 1 ·
What Are the Key Aspects of Phase Transitions?
- ariana0923
- · Replies 4 ·
DeBroglie wavelength for particle at rest
- bobaustin
- · Replies 1 ·
Proton Acceleration in Uniform Magnetic Field: Homework Solution
- mlbqd3
- · Replies 3 ·
Potential Energy of Dipole in Electric Field
- peaceandlove
- · Replies 1 ·
Hurricane wind blowing across a flat roof
- xKalax
- · Replies 2 ·
Difference in the maximum potential capacitance
- Apprentice123
- · Replies 11 ·
Motion in 2D astronaut orbiting moon
- knightassassin
- · Replies 6 ·
Finding minimum plate area for a parallel plate capacitor with dielectric material
- Apprentice123
- · Replies 7 ·
How Do You Calculate Pressure from Number Density and RMS Speed in Argon Gas?
- zellster87
- · Replies 4 ·
Calculating Bubble Diameter at Surface: A Diver's Dilemma
- talaroue
- · Replies 33 ·
Cannot see where potential enegy comes from in classical mechanics
- vectorcube
- · Replies 2 ·
Two connected particles resting on a smooth cylinder
- Miss Hannah
- · Replies 2 ·
Photoelectric device in circuit
- catie1981
- · Replies 5 ·
Kinematics - Minimization of a period
- RoyalCat
- · Replies 6 ·
How is a Conservation of Energy Problem Solved?
- bodensee9
- · Replies 8 ·
Explanation of net torque in a problem
- jolt527
- · Replies 3 ·
Optical Instruments I - Thin Lens
- OsDaJu
- · Replies 10 ·
2 refrigerators maintaining temperature
- redsrtturbo
- · Replies 9 ·
Angular momentum/kinetic energy
- twituksh12345
- · Replies 1 ·
How to Calculate the Electric Field of Two Point Charges Along the x-Axis?
- bmaia89
- · Replies 2 ·
Can Physical Quantities Have Non-Standard Dimensions?
- RoyalCat
- · Replies 4 ·
What is the Braking Force of a Car with No Friction?
- XphysicsblurX
- · Replies 4 ·
Proton speed needed to circle the earth
- mba444
- · Replies 2 ·
How Does Changing Frequency Affect Current in a Series LC Circuit?
- SimonZ
- · Replies 1 ·
What speed would a proton need to orbit in an exact circle ?
- mba444
- · Replies 3 ·
Calculating Energy Absorbed by Eardrum from Intensity & Area
- jmb07
- · Replies 1 ·
How to Calculate Net Electrostatic Force in a Square Configuration?
- smillphysics
- · Replies 3 ·
Electric Fields and Point Charges
- PrideofPhilly
- · Replies 1 ·
Vertical elastic collision with spring
- Gothican
- · Replies 8 ·
Depth of a Pit Based on Time Delay of Sound from Falling Rock
- RoyalCat
- · Replies 2 ·
Solving for the Speed of a Box on an Incline
- bodensee9
- · Replies 1 ·
Finding the Speed of a Box Tied to a Propeller on a Spring
- bodensee9
- · Replies 2 ·
Calculating Energy Absorption by an Eardrum Exposed to Sound Waves
- jmb07
- · Replies 4 ·
Magnitude of the force on this segment of wire ?
- mba444
- · Replies 1 ·
Near & Far Point of Eye: Power of Lens & Max Distance
- prat
- · Replies 2 ·