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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Write an equation for the gravitational force between two objects
- stargirl17
- · Replies 14 ·
Proving Kepler's 2nd Law: Pluto's Area Sweep
- Trizz
- · Replies 2 ·
Buoyant force on submerged block between two scales
- victorlee2
- · Replies 10 ·
Having trouble with a centripetal force problem
- jap129
- · Replies 9 ·
Finding the Angle and Magnitude of a Resultant Force using Vector Addition
- Luongo
- · Replies 6 ·
How Much Power Does a Cyclist Develop Climbing a Slope with Resistance?
- Mjpcampbell
- · Replies 1 ·
Pendulum oscillation after impact: frequency, equation, and max velocity
- JoanF
- · Replies 7 ·
Steel wrench feels 3N lighter in water, find mass
- bww
- · Replies 9 ·
Peak voltage output of a generator
- t_n_p
- · Replies 3 ·
Using a linear graph to find focal length from lens equation
- linda92
- · Replies 3 ·
Finding period of spring oscillation by dimensional analysis
- nahanksh
- · Replies 4 ·
Why is my resultant force calculation giving 789 lb instead of the correct answer?
- Luongo
- · Replies 4 ·
How Does Resistivity Affect Current Flow in Unconventional Conductors?
- jen0519
- · Replies 1 ·
Calculate Height of Basketball Player's Jump
- zelda1850
- · Replies 2 ·
What Is John's Resultant Displacement on the Highway?
- rdhddstpchld9
- · Replies 1 ·
What happens to a lamp in series if lamp in parallel is broken?
- cjwalle
- · Replies 12 ·
How Much Water Does a 115578 Ton Cargoship Displace?
- Zaphbeebl
- · Replies 1 ·
Relativistic Antiproton Protion
- alex3
- · Replies 2 ·
What Is the Coefficient of Kinetic Friction in This Spring and Friction Problem?
- nahanksh
- · Replies 1 ·
How does the addition of a dielectric affect the energy stored in a capacitor?
- EmmaK
- · Replies 3 ·
What is the final speed of a box sliding down a ramp onto a horizontal floor?
- nahanksh
- · Replies 4 ·
Circuit problem- resistance, power, voltage
- mmoadi
- · Replies 4 ·
2D Motion - Firecracker bursting
- chudd88
- · Replies 1 ·
Solving the Rod's Angular Acceleration Problem: Why and How?
- sriram_15_93
- · Replies 3 ·
How does a swimmer's jump affect the water level and raft in a pool?
- Mizuki168
- · Replies 2 ·
How can F = mg sin. θ be proven on a smooth plane?
- DarkNess_wtc
- · Replies 2 ·
How Many Sprints to Burn 500 Calories at 4.5 m/s?
- dnl65078
- · Replies 2 ·
Setting up momentum conservation for two magnetic carts
- weasal1975
- · Replies 2 ·
Explain Why we get hut by kicking a brick
- area51
- · Replies 3 ·
The Net Force on a Test Charge at Equilibrium Due to Two Point Charges
- Larrytsai
- · Replies 6 ·
Solve Wave Motion Question HRW 8 Ch 16 Q19
- eptheta
- · Replies 1 ·
What is the most efficient way to collect pure gas bubbles without pumps?
- olmec
- · Replies 2 ·
How Do Electron Transitions in Hydrogen Atoms Produce Photons?
- 54088
- · Replies 6 ·
Finding acceleration from V=0.18V₀/x and distance from a picture
- talaroue
- · Replies 7 ·
Airplane takeoff, elevator blocks, and scale reading problems
- willingtolearn
- · Replies 3 ·
How do velocity vector components work in motion problems?
- Rhine720
- · Replies 8 ·
Momentum and Impulse. find final velocity
- maxjohnfresh
- · Replies 1 ·
Calculating centripetal force when radius is unknown
- BogMonkey
- · Replies 2 ·
Is Object A Positive and Object B Negative Based on Electric Field Direction?
- r1ch412d
- · Replies 1 ·
Does placing something in water affect the water's weight?
- Dmitri10
- · Replies 5 ·
Determining the Speed of two cars before their collision
- j1249
- · Replies 1 ·
Thermal concepts questions (chem related)
- yamugushi
- · Replies 1 ·
Why do two colliding cars have the same speed after collision?
- jahlin
- · Replies 2 ·
Maxwell-Boltzmann Distribution function and equipartition theorem
- redz
- · Replies 1 ·
Given acceleration relation, find variables
- talaroue
- · Replies 11 ·
Induced emf in a wire hard mathematically
- fluidistic
- · Replies 10 ·
Rotational momentum (conservation problems)
- thatguy14
- · Replies 4 ·
Calculating angle for trajectory with exit position not at 0,0
- xal
- · Replies 1 ·
What is the Angular Acceleration of a Pivoting Stick?
- nahanksh
- · Replies 7 ·
Thermodynamics Volume Expansion
- Ling_Ling
- · Replies 3 ·
Thermodynamics Ideal Gas Law problem (pressure problem)
- Ling_Ling
- · Replies 2 ·
Trouble calculating the electric field at a point
- fluidistic
- · Replies 8 ·
Radial acceleration and gravity
- chudd88
- · Replies 1 ·
Calculating the currecnt of a circuit
- mmoadi
- · Replies 1 ·
Uniform Circular Motion and the Force of a Car on a Bumpy Road
- nahanksh
- · Replies 4 ·
Flow Development: Is psi = 4y - (y^3)/3 Fully Developed?
- banerjeerupak
- · Replies 1 ·
Calculating Water Speed Through a Hose
- taculator
- · Replies 2 ·
Thermodynamics: RMS Speed of Molecules
- Ling_Ling
- · Replies 3 ·
Calculating Force and Torque for Moving Mass on Wheels
- fox2005eng
- · Replies 4 ·
Thermodynamics Linear Expansion Problem
- Ling_Ling
- · Replies 2 ·
Find the min. velocity for which a particle will remain on the loop
- holezch
- · Replies 2 ·
Addition of AC current and compound angle theory
- tommoturbo
- · Replies 1 ·
Quantum: Photon strikes Electron.
- Yashir1992
- · Replies 2 ·
Calculating Potential and Kinetic Energy in a Slingshot Physics Problem
- stanton
- · Replies 3 ·
What is the displacement of the blue piston?
- blue_print101
- · Replies 1 ·
How much force does the train exert on Superman?
- zfire888
- · Replies 2 ·
Atmosphere of earth - why it isnt static?
- player1_1_1
- · Replies 3 ·
Lens equation: pretty simple probably
- johnson.3131
- · Replies 2 ·
Tension vectors in hung sign and hanging fish problems
- Gamegoofs2
- · Replies 1 ·
How Do You Calculate Energy and Maximum Power in Electrical Circuits?
- mathman44
- · Replies 13 ·
Dynamics: planar kinetics of a rigid body (impulse and momentum)
- silentwf
- · Replies 2 ·
Calculating the current of a circuit- resistance and volatge known, see picture
- mmoadi
- · Replies 1 ·
Having trouble with Einstein's Derivation of E=mc^2
- jwdink
- · Replies 36 ·
Can Static Vectors Be Managed Without Uploading Large Files?
- gangqi90
- · Replies 1 ·
Parallel Plates and Electric Fields
- physicsfun_12
- · Replies 3 ·
Calculating Voltage from Electric Field between Parallel Plates
- mmoadi
- · Replies 4 ·
Establish formula f in terms of l, T and m
- area51
- · Replies 1 ·
Dampened harmonic motion question
- sigmavirus
- · Replies 3 ·
How to Determine Minimum Thickness for Dark and Bright Spots in Soap Films?
- Motox
- · Replies 1 ·
What is the potential energy of the spring?
- zachmgilbert
- · Replies 7 ·
Finding the Correct Position of a Converging Lens for a Sharp Image
- usermanual
- · Replies 15 ·
What Angle Causes a Mass to Leave a Frictionless Sphere?
- holezch
- · Replies 13 ·
Mirror Optics- Measuring Virtual Image
- RoyDashMe
- · Replies 1 ·
How Do You Calculate the Centripetal Force for a Swinging Mass?
- Instanbul
- · Replies 6 ·
Calculating Electrical Force Between Two Objects Using Coulomb's Law
- r1ch412d
- · Replies 6 ·
What is Young's modulus?
- The Dude 321
- · Replies 5 ·
How do you know whether to use +9.8 or -9.8 for gravity?
- User Name
- · Replies 16 ·
Calculating the Mass of a Gas Molecule Using Kinetic Theory
- dnl65078
- · Replies 2 ·
Need Past AP Physics C Mechanics Exams
- theweb
- · Replies 5 ·
What is the Direction of Acceleration During a Bungee Jump?
- c&j
- · Replies 1 ·
Acceleration, velcocity, and position
- talaroue
- · Replies 2 ·
Find Amplitude of Motion: v=-6.54sin(20.1t) (mks units)
- zachmgilbert
- · Replies 3 ·
Prove: Rotation of Flows Satisfies Equation of Continuity
- banerjeerupak
- · Replies 2 ·
How Do You Calculate Final Pressure in a Compressed and Cooled Ideal Gas?
- dnl65078
- · Replies 1 ·
Calculating Time of Contact for Hammer and Nail
- Cole07
- · Replies 9 ·
Solving Alternate Current Homework on R, Impedance, Phase Difference
- fluidistic
- · Replies 15 ·
How to tell how far bullet went using sound
- Galahad43
- · Replies 2 ·
Calculating Force Needed to Pull Nail Out at 60 Degrees Angle
- MAPgirl23
- · Replies 2 ·
Why does small ammeter resistance explain negligible effect on circuit current?
- phyphysics
- · Replies 5 ·
Work done on a block by net force
- kt7477
- · Replies 4 ·