Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Heat Engine - Maximum Efficiency
- science.girl
- · Replies 3 ·
Equivalent Capicitance (with a resistor)
- Fluent
- · Replies 2 ·
What Is the Capacitance for a Discharge to 27% in 2.8ms?
- cwesto
- · Replies 3 ·
Calculating Simple Harmonic Motion for Thin Disks on a Horizontal Axis
- nns91
- · Replies 3 ·
Understanding Moment Equations in Rigid Body Equilibrium
- cursive
- · Replies 3 ·
Cat sliding on frozen lake with friction
- LoveandHate
- · Replies 2 ·
Magnetic field of a circular loop of wire
- tjkubo
- · Replies 1 ·
Find Thickness of Oil Film on Water, \lambda = 550 nm
- maybetoday
- · Replies 3 ·
Energy Conservation of an electron
- Chaggi
- · Replies 1 ·
Induced charge distribution on two different radius sphere
- jemerlia
- · Replies 1 ·
Electron launched at 45° in parallel-plate capacitor
- Cakiemmatdo
- · Replies 5 ·
Does Distance Affect the EMF According to Faraday's Law?
- maxsthekat
- · Replies 1 ·
What is the Definition of Average Velocity in Physics?
- Athikom 02
- · Replies 3 ·
Change in gravitational potential energy and work done against gravity
- Amber3046
- · Replies 5 ·
3 pieces of Polaroid sheet (light intensity)
- togahockey15
- · Replies 2 ·
General relativity Theory, spacetime and string theory question
- sowpur
- · Replies 2 ·
2 Plane mirror problems. no numbers
- phillyj
- · Replies 8 ·
Pendulum Problem and steiner' law
- ChazyChazLive
- · Replies 2 ·
How do you calculate the average angular acceleration of a spinning wheel?
- tnutty
- · Replies 1 ·
Finding where electric field is zero between two charges
- GDGirl
- · Replies 15 ·
Frictional Torque Flywheel Question
- Schoomy
- · Replies 1 ·
Determine the components of force
- joemama69
- · Replies 3 ·
Calculating Spring and Damping Constants for a Car Suspension System
- ChazyChazLive
- · Replies 5 ·
How Do You Calculate the Velocity of a Mine Car Hoisted Up an Incline?
- joemama69
- · Replies 1 ·
Centre of Mass of carpenter's L square -
- wizzle
- · Replies 5 ·
Work Done by a Spring Force and block problem
- soul5
- · Replies 4 ·
Spring problem in British units
- joemama69
- · Replies 1 ·
Bowling Ball Rise: Find Speed at Top w/Conservation of Energy
- scheng12
- · Replies 3 ·
Work and energy without friction
- catmd13
- · Replies 6 ·
Ideal Spring and Real Spring Difference? (Hooke's Law)
- BayernBlues
- · Replies 10 ·
Electric fields of wool and silk
- Cakiemmatdo
- · Replies 3 ·
Question + Problem on Collision/momentum
- rawimpact
- · Replies 2 ·
How Do You Calculate a Boat's Acceleration on a Circular Path?
- joemama69
- · Replies 2 ·
Can a car crash be an elastic collision?
- kikidoll
- · Replies 8 ·
Time for two bodies to collide under mutual gravity
- the-genius
- · Replies 1 ·
Can Voltage, Current, Resistance, and Length Determine a Wire's Fusing Factor?
- Ga San Wu
- · Replies 1 ·
Law of conservation of linear momentum and energy
- Radwa Kamal
- · Replies 2 ·
How Does Projectile Motion Determine the Initial Velocity for a High Jumper?
- Exquisite_
- · Replies 1 ·
How High Can a Tower of Sugar Cubes Be?
- pippintook
- · Replies 1 ·
How to Find Instantaneous Velocity at a Specific Time?
- [Nicolette]
- · Replies 1 ·
Measuring resistance of thermistor in potential dividers
- lefty989
- · Replies 6 ·
Q=mcT heat problem, were did i go wrong?
- Senjai
- · Replies 5 ·
Finding current and voltage in a multi-path circuit with 1.3 Ω resistor
- nn3568
- · Replies 1 ·
How Does a Hydraulic Lift Work with Different Piston Sizes and Weights?
- mrnastytime
- · Replies 1 ·
Angle of strongest polarization
- togahockey15
- · Replies 1 ·
Electric field expression problem
- Cakiemmatdo
- · Replies 1 ·
Measurement of Gravity (Simple Harmonic Motion)
- KillerQueen20
- · Replies 1 ·
How to find the k constant of a spring?
- rss14
- · Replies 9 ·
Beat frequency of strobe lights
- begbeg42
- · Replies 2 ·
How Do You Calculate the Torque on a Spinning Disk?
- fball558
- · Replies 10 ·
Energy Problem Involving Spring Force
- angotta
- · Replies 1 ·
Angular velocity and moment of inertia
- kikidoll
- · Replies 6 ·
Calculating Coefficient of Kinetic Friction in a Hockey Game
- xenograftsoul
- · Replies 4 ·
Resolving Discrepancies in Photon Gas Thermodynamics
- ed321
- · Replies 4 ·
How Does Adding Mass Affect the Angular Momentum of a Rotating System?
- luckylauren
- · Replies 1 ·
Grating, second-order spectrum and interference
- erinec
- · Replies 1 ·
Acceleration/Velocity Relationship
- tascja
- · Replies 1 ·
What is the work rate of an escalator lifting a woman from bottom to top?
- nelly42688
- · Replies 2 ·
Conservation of Momentum initial velocity curved path
- pconn5
- · Replies 2 ·
How Does Impact Affect System Angular Momentum?
- fball558
- · Replies 1 ·
Acoustic pulse echoes from canyon walls 147 m apart
- begbeg42
- · Replies 8 ·
Gravatational Field Strength problem (Grade 12 physics)
- axxon
- · Replies 7 ·
Capacitors with multiple dielectrics
- jordanjj
- · Replies 1 ·
Calculating Current in a Coil: 50 Turns, 4.0 cm Diameter, R = 0.50
- j88k
- · Replies 3 ·
Energy density of a 15 kg lead-acid battery vs gasoline
- aaronb
- · Replies 1 ·
Work and Kinetic Energy Theorem
- holmeskaei
- · Replies 1 ·
Energy density of a 15 kg lead-acid battery vs gasoline
- aaronb
- · Replies 1 ·
Potential Energy in Fuels: How Does a Fully Charged Battery Measure Up?
- aaronb
- · Replies 1 ·
Coefficient of Static Friction on a Banked Curve
- wingman358
- · Replies 10 ·
Capacitance problem (verify answer)
- jayjay112
- · Replies 6 ·
Electron current from STM tunnel in pA
- CharS
- · Replies 5 ·
Verifying Circuit Calculations: Is It Correct?
- jayjay112
- · Replies 1 ·
Calculating Velocity of Free-Falling Object from Rest at Different Altitudes
- student1
- · Replies 2 ·
How Far Did the Earthquake Occur from the Seismic Station?
- jjlandis
- · Replies 1 ·
Plot the graph of the electrical field
- jayjay112
- · Replies 1 ·
How Do You Convert Joules to Kilowatt-Hours for Hotel Energy Monitoring?
- skyla.haimes
- · Replies 1 ·
How Does Magnetic Field Influence the Path of a Doubly Charged Helium Atom?
- superjen
- · Replies 1 ·
Center of Mass and Energy in an Explosive Collision: A Homework Question
- Lord Dark
- · Replies 7 ·
Minimum spectral width of a 300ns laser pulse
- krugertown
- · Replies 1 ·
Finding Force and Angle for Mop Head Movement
- intenzxboi
- · Replies 1 ·
How Do You Calculate Tension and Speed in Rotating Bead Physics Problems?
- Joelseph
- · Replies 2 ·
Magnification and image location for concave and convex mirrors
- wakefreak90
- · Replies 1 ·
How Is Laser Beam Intensity Calculated?
- ganondorf29
- · Replies 1 ·
Relativity: Comparing Clocks in Different Frames
- DWill
- · Replies 3 ·
TV resolution and the Rayleigh criterion with 485 lines
- Ownaginatious
- · Replies 8 ·
Simple single-slit sound diffraction
- Ownaginatious
- · Replies 4 ·
Solve Cartesian and Polar Coordinates, Distance, and Direction Problems"
- graffz
- · Replies 1 ·
Yes, there is no force shown in the figure on A.
- littleman
- · Replies 2 ·
Amount of energy stored in a magnetic field
- rinarez7
- · Replies 3 ·
What is the Symbolic Solution to the Acceleration Problem of Two Blocks?
- rey242
- · Replies 2 ·
Angular momentum of clay and rotating device system
- magma_saber
- · Replies 1 ·
How many Excess Electrons are in a Typical Lightning Bolt?
- chops369
- · Replies 2 ·
Confusion with work and constant velocity
- okgo
- · Replies 1 ·
Trouble finding velocity equation
- jjlandis
- · Replies 2 ·
Minimum index of refraction for total internal reflection in a prism
- aimslin22
- · Replies 4 ·
Rotational Motion: Disc Movement
- kikidoll
- · Replies 1 ·
Rotational kinematics on a plane
- dherm56
- · Replies 2 ·
Determining the number of photons that reach the earth
- phys62
- · Replies 4 ·
Where Should I Drill the Hole to Minimize the Period of a Physical Pendulum?
- nns91
- · Replies 5 ·
How do I calculate average emf?
- synergix
- · Replies 5 ·