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 to find the horizontal distance from projectile motion?
- Eclair_de_XII
- · Replies 9 ·
Capacitance Question - Total Energy, Potential Difference
- ratinatinycar
- · Replies 7 ·
What is the Acceleration of a Vehicle at Different RPMs?
- Triple88a
- · Replies 6 ·
Determining Direction of Tension Force: Find Answers Here
- Balsam
- · Replies 2 ·
Archived Simple roulette in terms of circular motion
- Mahowny
- · Replies 2 ·
What is the Final Velocity of Puck B After Collision?
- Simoncoolstan
- · Replies 11 ·
How does opening multiple valves affect the water flow through pipes?
- lurifax1
- · Replies 5 ·
Opposite Direction: S 20° W | Homework Help
- Balsam
- · Replies 3 ·
Radiation Decay: Calculating Half-Life & Nuclei Activity
- Michael1974
- · Replies 1 ·
Electric Field Homework: Rank Protons by Acceleration
- Philip KP
- · Replies 33 ·
Help Me Hill Height for 35kg Child on 5kg Sled
- GalacticSnipes
- · Replies 6 ·
Biot Savart Law Homework Solutions
- meaghan
- · Replies 3 ·
How Many Hours Must Bulbs Burn to Save $73 Million Annually?
- theone
- · Replies 2 ·
How to Determine Flow Rate in a Pipe Using Fluid Dynamics?
- lurifax1
- · Replies 1 ·
How Long Until a Crate Reaches a Specific Velocity on an Incline?
- _N3WTON_
- · Replies 17 ·
Working on Coulomb's Law lab, what is this symbol?
- ssnapier
- · Replies 2 ·
Internal and external forces in momentum
- Biker
- · Replies 4 ·
Solving the Mystery of Non-Crossing IV Curves
- Marcin H
- · Replies 20 ·
Atomic Nucleus (first year college)
- Michael1974
- · Replies 1 ·
How Does Rolling Friction Affect a Toy Train's Motion on a Circular Track?
- popo
- · Replies 10 ·
Calculate the coefficient of static & kinetic friction
- Belma
- · Replies 8 ·
Newton's first law, forces, charges
- heartshapedbox
- · Replies 4 ·
Finding Spring Constant from Mass and Extension
- Prathamesh
- · Replies 14 ·
How do you calculate the length of a board using torque?
- confused111
- · Replies 4 ·
Calculating errors after curve fitting (linearizing) graphs
- Orha
- · Replies 17 ·
Find tension in cables supporting giant swing
- heartshapedbox
- · Replies 9 ·
Coordinate Rotation: Find Transformation Matrix for 120° Rotation
- AndresPB
- · Replies 17 ·
Pressure Difference: Why Ignored at P1 & P2 in Energy Eqn?
- foo9008
- · Replies 8 ·
Calculating Revenue for a Geothermal Power Plant with 150kW Steam Flow at 180°C
- theone
- · Replies 5 ·
Question on theory for solving 2015 AP Physics C Free Response Questions
- RoboNerd
- · Replies 12 ·
Capacitor Energy With Different Dielectrics
- recursive
- · Replies 2 ·
Question regarding a two-lens system
- pisquared
- · Replies 4 ·
Trouble Determining Moment Arm (aka Lever Arm)
- x2017
- · Replies 12 ·
How to Calculate Resistors in Parallel Uncertainty
- LCHL
- · Replies 3 ·
Finding Theta Angle of a Pendulum in a Moving Car | Accelerometer Question"
- Frankenstein19
- · Replies 1 ·
Conceptual question on angular momentum and Emech.
- RoboNerd
- · Replies 7 ·
Why Do Objects in Elastic Collisions Sometimes Share or Transfer Velocities?
- Biker
- · Replies 3 ·
Archived Problem with non linear increase in voltage/amperage
- samsanof
- · Replies 1 ·
What is the Internal Energy of 158 moles of CO2
- ConorDMK
- · Replies 3 ·
Solving a Term about gravitation to r
- wiegetz
- · Replies 2 ·
Change in time period of pendulum
- Vibhor
- · Replies 7 ·
Why Does Water Flow from Low to High Energy Levels?
- foo9008
- · Replies 2 ·
Apparent weight loss 2nd Newtons Law elevator problem
- Frankenstein19
- · Replies 4 ·
I have a question about a problem related to waves in a rope
- sebas
- · Replies 8 ·
Confusion with how to calculate acceleration in this problem
- Frankenstein19
- · Replies 4 ·
Does Faster Mean More Energy: Comparing 0-60 in 3 & 8 secs
- brycenrg
- · Replies 16 ·
Calculating Vertical +Horizontal Forces of Beam in Equilib.
- King_Silver
- · Replies 4 ·
Potential Difference Across Diode & Resistor
- Potatochip911
- · Replies 3 ·
Collision Conservation of Energy
- jakeginobi
- · Replies 5 ·
Momentum density of states for pion decay.
- pondzo
- · Replies 3 ·
Electron in a box - wavelength of photon
- yango_17
- · Replies 3 ·
Collision Conservation of Energy
- jakeginobi
- · Replies 1 ·
Conservation of energy at terminal velocity
- Jake 7174
- · Replies 3 ·
Ground wave vs. sky wave stability
- Titan97
- · Replies 7 ·
Finding number of charges using Coulomb's Law
- Dr. Who
- · Replies 1 ·
Find resistance of resistor connected in series
- PhysicsBoyMan
- · Replies 9 ·
Plotting reflection coefficient
- nmsurobert
- · Replies 1 ·
What is the work and power involved in pushing a cart at a 30 degree angle?
- DeepPatel
- · Replies 3 ·
Solve Work-Energy Problem for Girl Cliff Diving
- DeepPatel
- · Replies 1 ·
Electric field between inner and outer cylinder
- Brennen berkley
- · Replies 2 ·
Vectors A + B: Are Any of the Above True?
- Ryan McCormick
- · Replies 4 ·
Sledding Down a Hill: Calculating Friction and Velocity
- DeepPatel
- · Replies 31 ·
I have a question about a pulley and tension-related problem
- edgarpokemon
- · Replies 3 ·
Why is the efficiency of a rubber band slingshot constant
- CTHAEH
- · Replies 4 ·
Calculating the charge to mass ratio
- WestTXcollegekid
- · Replies 12 ·
How does emf relate to current, elec potential, & resistance
- PhysicsBoyMan
- · Replies 1 ·
How Do You Calculate Net Force on a Diver?
- Haley Heldt
- · Replies 8 ·
Inductance of solenoid (length = diameter)
- lcr2139
- · Replies 2 ·
Is moment of inertia only for rotating objects?
- Titan97
- · Replies 11 ·
Fill Balloons Homework: Max # People for Bday Party Balloon
- MadTay
- · Replies 4 ·
What is the speed of sprinter running away from lens?
- romeIAM
- · Replies 8 ·
What Are the Forces in Truss Members BH and HG?
- sophiebeth100
- · Replies 5 ·
Is state an energy eigenstate of the infinite square well
- acdurbin953
- · Replies 2 ·
Why doesn’t the motor start right away?
- Marcin H
- · Replies 9 ·
Archived Spectrometer CCD Homework: Calculate Spectral Range for m=4
- woaini
- · Replies 1 ·
Help with a mechanics problem from Kleppner's book
- Tahmeed
- · Replies 1 ·
How do I combine equations for absolute independent motion with pulleys?
- JustDerek
- · Replies 3 ·
Solving Satellite Orbit Problem: Finding Time in Hours
- Giu1iano
- · Replies 3 ·
Calculating the Radius of a Metallic Ball
- vinamas
- · Replies 8 ·
Magnetic Field of Spherical Electromagnetic Wave
- Darly
- · Replies 1 ·
Magnetic field of a moving charge
- squeak
- · Replies 1 ·
Finding Magnitude of Magnetic Field
- Travkid
- · Replies 6 ·
Transformations of energy in oscillatory motion
- mcaay
- · Replies 3 ·
Dynamics: Incline Slope Derivation Simplification
- Asleky
- · Replies 5 ·
Total Length of a Stretched Spring: How Do I Calculate It?
- jakeginobi
- · Replies 4 ·
Confused about solving RC circuits with nodal analysis
- timnswede
- · Replies 2 ·
Motion of charge in electric and magnetic fields
- krbs
- · Replies 8 ·
Determine the location of her center of mass
- ual8658
- · Replies 5 ·
Circuit with Four Resistors and Two Switches
- Jake Russell
- · Replies 4 ·
Problem using Newton's 2nd Law F= m x A
- Bob K99
- · Replies 6 ·
Required heat, entropy change of object dropped in water
- ElectricEel1
- · Replies 3 ·
What time interval between wave fronts in S and S'?
- Breadsticks
- · Replies 5 ·
Acceleration of object at specific height?
- KDprevet
- · Replies 8 ·
Are these torques correct for a simple balancing/fulcrum exp
- Robert Parsons
- · Replies 4 ·
How Long and How Fast Do Divers Fall from Different Heights?
- x2017
- · Replies 7 ·
Solve Homework 2: Electromotive Force in a Shrinking Loop
- Erik P
- · Replies 1 ·
Kirchhoff Law Problem: Find Current and Potential Difference | Solution Included
- WeiLoong
- · Replies 10 ·
Photoelectric Current: Max KE & Intensity Explained
- Janiceleong26
- · Replies 19 ·
What is the smallest frequency difference that can be detected by the human ear?
- burningbend
- · Replies 13 ·
Particle Released From Narrow Potential - Fourier Transform
- BOAS
- · Replies 7 ·