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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What is the weight of block D in this equilibrium of particles problem?
- hdp12
- · Replies 5 ·
Calculating Charge on a Spherical Surface with Varying Density
- BOAS
- · Replies 2 ·
Capacitors and charge on them Question
- Dhruv Rawat
- · Replies 1 ·
The time span for which insect can see its image?
- sylwesh98
- · Replies 9 ·
How does static vs kinetic friction affect skate velocity?
- Poetria
- · Replies 5 ·
Car starting to move, friction and forces
- Karol
- · Replies 24 ·
Why is max water height h/10 = 3 m for a 0.1mm hole by surface tension?
- erisedk
- · Replies 17 ·
Centripetal Acceleration of rocket car
- _N3WTON_
- · Replies 7 ·
Electric Field of Point Charges in Equilateral Triangle
- END
- · Replies 3 ·
How does the separation between block and spring affect the time period?
- AdityaDev
- · Replies 7 ·
Time to rotate system 20 degrees
- D.B0004
- · Replies 6 ·
Phase space diagram for a spring in simple harmonic motion
- Yosty22
- · Replies 1 ·
Potential energy of an arrangement of point charges
- acdurbin953
- · Replies 1 ·
How do similar triangles help determine the visible area in a plane mirror?
- Wing2015
- · Replies 3 ·
Charge of q5 in Electric Field Map with q4 and q6
- END
- · Replies 4 ·
Given voltage, solve for unknown resistor in a circuit
- acdurbin953
- · Replies 2 ·
Electric Field and charge location
- jeremy de leon
- · Replies 5 ·
Kinematics Projectile Motion Problem
- joeyoung1996
- · Replies 3 ·
Calculate the stress in the duralumin rod
- cyrus35
- · Replies 4 ·
Determining Wave Parameters for Interference Pattern
- ilii
- · Replies 3 ·
Work done by Air resistance on ball?
- Ivar
- · Replies 6 ·
Calculating final temperature in insulated container
- Gaith
- · Replies 1 ·
How Does Pushing Force Affect Contact Force Between Two Boxes?
- CristinaCotto
- · Replies 9 ·
Why is C the correct radioactive emitter for this decay problem?
- PhysicStud01
- · Replies 23 ·
Calculating Final Velocity of a Car Using Uniform Acceleration
- CTech2015
- · Replies 3 ·
Velocity graph of an object speeding up
- Steelers72
- · Replies 15 ·
Gear ratio requirement (RPM --> km/h)
- D.B0004
- · Replies 2 ·
Why is the cathode voltage higher in reverse bias across a PN junction?
- CKaiL
- · Replies 6 ·
Triangle Ladder equilibrium problem
- terryds
- · Replies 17 ·
Finding Distance d for Infinity Image: Diverging and Converging Lens Problem
- premed_love
- · Replies 1 ·
Matter/Electron Waves and the Davisson-Germer Experiment
- Yosty22
- · Replies 4 ·
Finding Coefficient of Kinetic Friction
- Ryan Hwang
- · Replies 2 ·
Finding bounce angle when a body hits a sphere
- Robben
- · Replies 2 ·
How long does it take for the batter to lose its charge?
- pandamonium
- · Replies 9 ·
What is the angle between the two emerging beams of light?
- FunkyFrap
- · Replies 7 ·
Finding Initial Velocity with Given Distance and Angle?
- vaironl
- · Replies 2 ·
Iron Bar Thermal Radiation Calculation
- Gaith
- · Replies 5 ·
Newton's Law of Universal Gravitation equation(s) ?
- bijou1
- · Replies 7 ·
Minima of a diffraction grating
- albega
- · Replies 6 ·
The height at which the gravity acceleration is 5x smaller
- Amar
- · Replies 9 ·
Finding the Potential of a Charged Rod on the x-axis
- camira
- · Replies 5 ·
Power dissipated by a resistor in a circuit
- plazprestige
- · Replies 2 ·
Mass on a Spring: Determine Periodic Time, Frequency & Acceleration
- Thermoman
- · Replies 6 ·
What is the Charge on a Uniformly Charged Sphere Based on Gauss' Law?
- MikeB2210
- · Replies 3 ·
Where between two charges does voltage = 0?
- Sylvia
- · Replies 6 ·
Rotation period of a space station
- ross moldvoer
- · Replies 12 ·
Log thrown off Grand Canyon: finding velocity and distance fallen
- rasofia77
- · Replies 21 ·
Driven harmonic oscillator problem
- Taylor Grubbs
- · Replies 3 ·
The acceleration of a ramp and and mass on the ramp
- Luca 123
- · Replies 4 ·
Centripal Force - Friction needed to keep a car tracking a curve
- Julian3
- · Replies 6 ·
Is the Velocity negative or positive?
- rasofia77
- · Replies 5 ·
Why is the electric field normal to a conductor surface?
- DriggyBoy
- · Replies 4 ·
Gravitational potential and kinetic energy equations
- Sonny18n
- · Replies 1 ·
Finding the center of mass of a system
- jb007
- · Replies 5 ·
Two beads connected by a taut thread on friction-less wire ring Proof
- Alexander Marks
- · Replies 1 ·
Calculating Properties of a 2.2 eV Electron
- EgpYo
- · Replies 7 ·
Finding revolution time at surface
- ross moldvoer
- · Replies 14 ·
Time derivatives of sin and cos phi
- A2Airwaves
- · Replies 1 ·
Plane velocity with tailwind using velocity addition equation
- rasofia77
- · Replies 1 ·
Find the gravitational force between then sun and the earth
- Julia Darko
- · Replies 2 ·
Finding scuba tank interior volume from standard cubic feet
- Matt766
- · Replies 9 ·
Find moment of inertia via torque and acceleration parameter
- D.B0004
- · Replies 2 ·
How Do You Properly Round in Error Analysis?
- Syed Qaiser
- · Replies 2 ·
Charge on insulating sphere and conducting shell using Gauss' law
- Sierra
- · Replies 20 ·
Distance traveled by the boat during acceleration
- RichusX
- · Replies 2 ·
Magnetic field of infinite wire
- whatisreality
- · Replies 1 ·
Will the man catch the bus if he starts 10 meters away from the door?
- stephenranger
- · Replies 2 ·
The acceleration of a ramp and mass
- Luca 123
- · Replies 7 ·
Applying law of momentum conservation
- arpon
- · Replies 16 ·
Man pulling a cube on a rough surface
- Karol
- · Replies 2 ·
Electric Field inside concentric spherical shells
- vysero
- · Replies 12 ·
Centripetal Acceleration for non uniform speed
- henry3369
- · Replies 2 ·
Relative Velocity of Ball Tossed on Moving Train
- rasofia77
- · Replies 8 ·
How Does Relative Motion Affect Perceived Speeds in a Police Chase?
- rasofia77
- · Replies 2 ·
Girl on platform pulls rope to accelerate upward
- Paola Cavazos
- · Replies 5 ·
Finding Voltages in a Circuit with Nodal Analysis
- Gwozdzilla
- · Replies 7 ·
What is the distance covered by a robotic bug moving along the x-axis?
- Poetria
- · Replies 18 ·
Thermodynamics Question Calculating change in temperature
- Gaith
- · Replies 2 ·
What is the relationship between diameter and mass per length in a steel wire?
- nesan
- · Replies 3 ·
Projectile Motion: How tall is the building?
- SamL
- · Replies 12 ·
Current required in a long wire
- rwilson5
- · Replies 1 ·
Tension in a string between two blocks
- litz057
- · Replies 45 ·
Point Charge and Charged Sphere
- skycap
- · Replies 1 ·
Electric potential and field of a charged ring at a point on the axis
- Sierra
- · Replies 5 ·
Flux through various Gauss' surfaces
- vysero
- · Replies 6 ·
Calculating Work by Friction using Integrals
- henry3369
- · Replies 2 ·
Tension of a string attached to an instrument inside rocket
- physicsquestion
- · Replies 32 ·
Calculating Reactions in Balance: A Student's Question
- clockworkrobot
- · Replies 1 ·
How much does a spring compress with 100 N force?
- brake4country
- · Replies 11 ·
Subscripts and superscripts in four vectors
- stephen cripps
- · Replies 10 ·
Calculating Electric Field Flux for Non-Uniform Fields: Gaussian Cubes Example
- vysero
- · Replies 3 ·
How did we get the formula for torque?
- rokuog
- · Replies 3 ·
How to find Best Efficiency Point for pumps in series?
- theone
- · Replies 2 ·
Solving for the Height of a Slope with Unknown Mass
- Ivar
- · Replies 4 ·
What is the voltage across C2 in this circuit?
- jake jungle
- · Replies 1 ·
DC current -- Find the 3 currents in this Battery + Resistor circuit
- jake jungle
- · Replies 6 ·
Find the acceleration of the system and the maximum force
- annalian
- · Replies 3 ·
Maximum separation between blocks on spring
- henry3369
- · Replies 2 ·
Maximum compression of spring when book drops from 0.5 m
- henry3369
- · Replies 19 ·