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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Efficiency of a 10%-Efficient Car Engine: Energy Transfer and First Steps
- spokorne
- · Replies 1 ·
Determine image distance relative to lens
- phys62
- · Replies 5 ·
Resistance and Resistivity problem
- Snowman2526
- · Replies 2 ·
Am I on the right track with Ampere's Law?
- jumbogala
- · Replies 2 ·
Resistivity of a stretched wire VS unstretched state
- SpecialMen
- · Replies 2 ·
How Does Pipe Diameter Affect Water Pressure and Flow Velocity?
- Stryder_SW
- · Replies 1 ·
Find Magnitude of Buoyant Force on Boat in Water
- XodoX
- · Replies 9 ·
Elastic collision in center of mass frame
- TwinGemini14
- · Replies 2 ·
When is the Charge and Electric Energy in a Capacitor Half of Its Final Value?
- slaytanic37
- · Replies 1 ·
How Much Kinetic Energy Is Lost in a Collision Between Two Toy Cars?
- nsingh947
- · Replies 2 ·
Deriving an expression for the radius of a satellite's orbit around Earth(?)
- AudioGeek
- · Replies 3 ·
Maximum speed of a spring mass is given by 2(pi)(frequency)(amptitude)?
- zeion
- · Replies 2 ·
What is the radius of the ion's path in a magnetic field with given values?
- rinarez7
- · Replies 2 ·
At what angle does the light leave the glass?
- phys62
- · Replies 3 ·
Bright fringes in reflected light from air wedge between glass plates
- msk172
- · Replies 4 ·
Rotational Inertia of Irregular Plate
- Nikolan
- · Replies 2 ·
Maximum tilting angle of a composite body
- unknown_2
- · Replies 3 ·
Pebble Shot with Spring Constant - how to setup?
- Schoomy
- · Replies 7 ·
Magnetic field from two perpendicular wires and charged particle force
- bjm2130
- · Replies 1 ·
Fluid Dynamics Question(not too difficult)
- bob24
- · Replies 1 ·
Find the wavelength of the sound.
- alevis
- · Replies 1 ·
How do i find the higher electric field of these two
- Dell
- · Replies 1 ·
How do you calculate the impulse on a person performing a belly flop?
- Shatzkinator
- · Replies 6 ·
Calculating Impulse and Velocity in Inelastic Collision
- DoctorB2B
- · Replies 3 ·
Centripetal Force: Ball in Vertical Circle at Constant Speed
- eddyy08
- · Replies 5 ·
Circuits - Power and Resistivity
- NemaxameN
- · Replies 2 ·
Which end of an electron beam is at the higher potential?
- jumbogala
- · Replies 1 ·
Calculating Minimum Width for 5 Interference Maxima
- msk172
- · Replies 1 ·
Minimum thickness for nonreflective coating on glass lens
- msk172
- · Replies 13 ·
Finding astronaut mass from spring oscillation period
- azn4life1990
- · Replies 1 ·
How to Calculate Speed of a Car Rolling Down a Hill
- tommy-d
- · Replies 3 ·
Lab - Friction and Forces on an Incline
- soccergirl14
- · Replies 4 ·
Sled pulled by rope at angle: finding coefficient of friction
- Nanart
- · Replies 7 ·
Why is the near point 25 cm and far point infinity for eyeglass prescriptions?
- lha08
- · Replies 1 ·
Kinematics and Instantaneous Changes
- HMCCSUF
- · Replies 4 ·
Calculating Time for Car A to Pass Car B: Acceleration Comparison
- Ry122
- · Replies 2 ·
Coefficient of Kinetic Friction Question
- wilson_chem90
- · Replies 3 ·
Proving the line lies on the plane
- soulja101
- · Replies 1 ·
Deriving moment of inertia from work-energy theorem
- danyalasdf
- · Replies 1 ·
Finding plane equations parallel to a parametric plane through point A
- unknown101
- · Replies 4 ·
Orbital speed of satellite around Jupiter and Jupiter's orbital period
- ubiquitous
- · Replies 1 ·
Deriving moment of inertia from Newton's second law
- danyalasdf
- · Replies 4 ·
How Far Can the Bottom Book Overhang the Table Without Falling?
- a_narain
- · Replies 3 ·
Concentric spheres and electrostatic induction
- springo
- · Replies 8 ·
Calculating Electrostatic Pressure on a Charged Sphere
- springo
- · Replies 9 ·
Finding the potential difference across two wires
- SamS90
- · Replies 2 ·
Particle in a conservative force field + SHM
- m00npirate
- · Replies 3 ·
Velocity of a 1.0g raindrop falling from 1.0km height
- qszwdxefc
- · Replies 1 ·
Car on an incline, kinetic/static friction when break applied confussion.
- alba_ei
- · Replies 1 ·
Forward euler equations of motion
- sabatier
- · Replies 3 ·
Ratio of weight at top of a ferris wheel to bottom
- vorcil
- · Replies 7 ·
Static equilibrium and torque problem
- physicshurts
- · Replies 5 ·
Static Eqm-unsure about forces to be drawn
- makeAwish
- · Replies 10 ·
Static Equilibrium free-body diagram
- makeAwish
- · Replies 9 ·
Finding force and angle when pulling a wagon 60m
- zeion
- · Replies 5 ·
Physics 101: Average Force Calculation for a Falling Object Hitting a Pole
- Okki2
- · Replies 3 ·
Why Is Calculating Normal Force at the Top of a Rollercoaster Tricky?
- vorcil
- · Replies 6 ·
Calculating the Physics Behind Super-Bouncy Shoes
- quarktacular
- · Replies 4 ·
Arrow is short vetically upwards (Force/Springs)
- KICKERMAN360
- · Replies 2 ·
Conservation of momentum question FINAL
- vorcil
- · Replies 1 ·
How Can Velocity and Angular Momentum Be Calculated in These Dynamics Problems?
- rock.freak667
- · Replies 0 ·
Question on Momentum, Force and Impulse
- Chan1993
- · Replies 1 ·
Net electric force in particles in triangular formation
- nn3568
- · Replies 9 ·
Finding recoil velocity only given force and firing velocity
- junkmonk
- · Replies 3 ·
Me Tarzan, You Jane. Force Problem.
- tambourine
- · Replies 26 ·
Finding acceleration and loop time for roller coaster with normal forces
- vorcil
- · Replies 7 ·
What Speed and Direction Does the Tangled Metal Move Post-Collision?
- aquirk
- · Replies 1 ·
Coulomb's Law, net electrostatic force
- nn3568
- · Replies 2 ·
How Do You Determine the Mass of the Second Object in an Elastic Collision?
- katrvu
- · Replies 6 ·
Calculating the frequency of a wave
- tascja
- · Replies 2 ·
Is the Final Velocity of a Projectile Always Greater Than the Initial Velocity?
- jonniechung
- · Replies 4 ·
Moment of inertia of a rod: axis not through the centre?
- wizzle
- · Replies 4 ·
Constructive wave interference problem
- throllen
- · Replies 3 ·
Force needed to keep block B stationary on inclined surface
- Tesla11
- · Replies 2 ·
Finding tension in cables supporting a hanging sign
- Nanart
- · Replies 7 ·
Resistance of infinite nested triangles
- Mtnbiker
- · Replies 5 ·
How Does Torque Affect a Cart Overcoming a Step?
- a_narain
- · Replies 1 ·
Bright fringes in a wedge air gap between glass plates
- JSapit
- · Replies 4 ·
What Is the Radius of an Arc for a Pilot Experiencing 5G at 700m/s?
- jelynell
- · Replies 2 ·
How Does Friction Affect the Angular Momentum of a Bowling Ball?
- Kaln0s
- · Replies 1 ·
Solving a Buoyancy Problem: Determining the Weight of a Truck on a Ferry Boat
- TRBMan
- · Replies 3 ·
Finding tension forces Ta and Tb in a pulley system
- Nanart
- · Replies 3 ·
Friction between a crate and an accelerating truck
- tascja
- · Replies 6 ·
Tension/acceleration between 2 Masses
- tascja
- · Replies 6 ·
How do I find the moment of inertia for a curve?
- rock.freak667
- · Replies 8 ·
RMS Speed of Helium Atom at 2000K: An Overview
- courtneylane8
- · Replies 5 ·
What Is the Wavelength of the Electromagnetic Radiation?
- JSapit
- · Replies 10 ·
Radiation produced by accelerating charges
- Plmzaq
- · Replies 1 ·
Is My Magnetic Force Calculation on a Power Line Correct?
- Dopefish1337
- · Replies 6 ·
Determine the Altitude of a Satellite above Earth Given it's Constant Speed
- PhysicsJunkie
- · Replies 1 ·
Calculating Force in Car-Railroad Collision
- remaan
- · Replies 8 ·
Ball Motion Down the Incline: Is the Calculated Height Correct?
- Kat3rina
- · Replies 3 ·
Conservation of Energy with Friction
- SpaXe
- · Replies 4 ·
The magnitude of the magnetic torque on the loop
- marpple
- · Replies 4 ·
What is the value of the square root of the mean of the square current?
- phy112
- · Replies 6 ·
Kinetic Energy of Pulley Question
- Godlock
- · Replies 7 ·
How to Calculate Acceleration and Average Speed in a Road Test
- chaos17
- · Replies 4 ·
How Can You Calculate the Altitude of a Satellite Using Gravitational Equations?
- chewtoy929
- · Replies 3 ·
If a proton rebounds at 90 degrees Momentum and elastic collision problem.
- tleave2000
- · Replies 5 ·
Calculating Refractive Index from Critical Angle Measurement?
- aimslin22
- · Replies 2 ·