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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Minimum Length of Emergency Escape Ramp for Truck to Stop
- seraphimhouse
- · Replies 2 ·
Where did this formula for velocity come from?
- Munky
- · Replies 5 ·
How fast must the rotor of a generator rotate?
- xswtxoj
- · Replies 5 ·
How to Calculate Volume Thermal Expansion Coefficient?
- phrygian
- · Replies 4 ·
Interference - Finding distance between slits
- mattbonner
- · Replies 1 ·
What is the intensity of the incident of light?
- phy112
- · Replies 1 ·
Elastic collisions of a sliding block
- intenzxboi
- · Replies 1 ·
Position of Center Mass Question
- yb1013
- · Replies 1 ·
Physics has to do with simple machines
- amandamolegir
- · Replies 1 ·
Calculating EM Radiation from a Star 13 Million Light-Years Away
- phy112
- · Replies 2 ·
Solving the Resistance of an Electric Water Heater
- student_fun
- · Replies 2 ·
Fabricate uniform wire out of 2.1g of copper w/ 0.3 ohm resist. - wire diameter?
- student_fun
- · Replies 2 ·
Composite beams and young's modulus
- ABoul
- · Replies 1 ·
Time for capacitor to discharge to 1/e of initial charge
- driedupfish
- · Replies 2 ·
Calculate Length of Transmitting Antenna for 1.8 GHz Frequency
- XodoX
- · Replies 1 ·
Potential Energy/ The Isolated system
- aaronb
- · Replies 4 ·
Magnetic flux through a disk inside a solenoid
- Interesting
- · Replies 1 ·
Very Simple Rotation Inertia of a Thin Rod Problem
- Oijl
- · Replies 1 ·
Energy of a free-falling, pivoting thin rod
- Oijl
- · Replies 2 ·
Head-on collision with moving and stationary objects
- fball558
- · Replies 6 ·
Calculating Momentum and Impulse of a Golf Ball and Club
- Black_Hole???
- · Replies 7 ·
Work and gravitational potental energy
- Shatzkinator
- · Replies 1 ·
How Do Wood Blocks Behave in a Collision on a Frictionless Surface?
- Black_Hole???
- · Replies 10 ·
What is the tension in the coupling between two trucks on an inclined slope?
- xllx
- · Replies 6 ·
Final velocity of 18 kg rock after collision with 6 kg rock
- fball558
- · Replies 3 ·
Bullet Enters/Exits Mass, Mass Slides
- myxomatosii
- · Replies 5 ·
Motion of a Charged Particle in an Electric Field
- zandbera
- · Replies 4 ·
Resonance Curve - Do I have enough info?
- phyzmatix
- · Replies 1 ·
Free-body Diagrams for Bicycle and Person sitting on it
- proto-man
- · Replies 6 ·
Why subtract g from acceleration to find tension in falling mass
- tnutty
- · Replies 9 ·
Does the Equation U·U = ||U||^2 Hold for Complex Vectors?
- SoulofLoneWlf
- · Replies 1 ·
Angle of particles after elastic collision
- ajl1989
- · Replies 1 ·
Rotaional Inertia of a Thin Rod
- Oijl
- · Replies 1 ·
Is the soeed of an electron relativistic?
- number14
- · Replies 1 ·
Impulse momentum theorum with a spring
- powerofsamson
- · Replies 6 ·
Why Does Momentum Affect the Calculation of Final Velocity in Physics Problems?
- myxomatosii
- · Replies 2 ·
Is Coulomb's Law the Correct Equation for This Calculation?
- zandbera
- · Replies 4 ·
Momentum and energy in collisions, bullet problem
- jchojnac
- · Replies 18 ·
What does B = ∇ × A mean physically in electromagnetism?
- lalligagger
- · Replies 4 ·
Rotational Dynamics of a grinding wheel
- Black_Hole???
- · Replies 12 ·
0.5V across 1.5m tungsten wire w/cross-sect. area 0.6 mm^2 - Find wire current
- student_fun
- · Replies 3 ·
How Is Torque Calculated for a Rectangular Loop in a Magnetic Field?
- maxsthekat
- · Replies 9 ·
Uniform Circular Motion frequency
- DevilTemptations
- · Replies 1 ·
Calculate the z component of the torque relative to position
- magma_saber
- · Replies 5 ·
Bulk modulus and poisson's ratio
- ABoul
- · Replies 4 ·
Investigation of resistance of Lightbulb
- chipsnfish
- · Replies 1 ·
Calculating Tension in a Multi-Duck System
- mIsix
- · Replies 5 ·
Magnetic Field Calculations for Parallel Wires
- Kudo Shinichi
- · Replies 3 ·
Angular acceleration and speed
- Knfoster
- · Replies 1 ·
Finding optimal angle for swimmer-runner river crossing
- vthenry
- · Replies 11 ·
Real and Point Particle Systems of a jumper
- jchojnac
- · Replies 6 ·
At what angle does the light leave the glass
- phys62
- · Replies 2 ·
What is the average force on Superman's chest when hit by 3g bullets at 500 m/s?
- Shatzkinator
- · Replies 3 ·
Why does length contraction occur in Lorentz transformations?
- lincs_b
- · Replies 2 ·
Calculating Work Done by a 2HP Engine to Pump Water
- dreamgirl
- · Replies 1 ·
Direction of a particle in a uniform magnetic field.
- nvictor
- · Replies 2 ·
What angle is subtended when using this 270-diopter objective?
- phys62
- · Replies 4 ·
Physics and Forensics-Projectile Motion
- colourstrips
- · Replies 2 ·
Finding tension in suspended shelf
- tcd89
- · Replies 1 ·
Impulse & Momentum: Golf Ball & Club Force Calcs
- elimenohpee
- · Replies 1 ·
The Force Between Current-Carrying Conductors
- vrobins1
- · Replies 1 ·
Optics Question: Object Distance with a Slit and Lens
- Oerg
- · Replies 1 ·
Simple Work-Energy Problem is stumping me
- Saladsamurai
- · Replies 3 ·
What Are Innovative Physics Extended Essay Topics for the IB Program?
- Superdemongob
- · Replies 1 ·
Calculating Energy Transported by an EM Wave with a 36.5 mV/m E Field
- Queue
- · Replies 1 ·
Equilibrium friction on an incline
- bakin
- · Replies 1 ·
Maximum Velocity for a Banked Curve Without Sliding or Rolling Over
- sricho
- · Replies 10 ·
I'm having trouble with this circuit problem - Power
- JMoore0150
- · Replies 7 ·
Calculate the mass of the block of wood
- davewisniewsk
- · Replies 3 ·
How Should You Round Photon Energy Changes in Physics Calculations?
- cupcake
- · Replies 4 ·
Does a static/normal force grpah go thorugh the origin?
- gunho
- · Replies 1 ·
Magnitude of the average resultant force in KN on the truck
- remaan
- · Replies 23 ·
Finding velocity of doubly charged He atom from accelerating voltage
- MadMustang129
- · Replies 1 ·
How does ΣF = Ft - mg lead to v = √((Ft - mg)r/m)?
- msudawgs267
- · Replies 1 ·
How Much Force to Overcome a Step with a Wheel?
- Eagle Eyes
- · Replies 1 ·
Understanding Capacitance: Calculating Electric Fields with an Air Gap Capacitor
- cwrx14
- · Replies 2 ·
What is the frequency of the signal?
- XodoX
- · Replies 6 ·
Falling Rods Conceptual Question
- bpru
- · Replies 5 ·
How much energy is transported by an EM wave with a given E field strength?
- Queue
- · Replies 3 ·
Which collision equations go with which situations?
- twenty5
- · Replies 8 ·
How do I integrate a definite integral with variable limits and constants?
- lauriecherie
- · Replies 8 ·
How would I go about solving a problem like this? About acceleration
- Amber3046
- · Replies 2 ·
Collisions and changing frame of reference?
- twenty5
- · Replies 1 ·
What Was the Initial Velocity of an Object That Traveled 120m in 5.60s?
- StupidGenius
- · Replies 2 ·
Projectile Motion and maximum height
- wowdusk
- · Replies 5 ·
Electron shot between plates (electric field)
- miroku2192
- · Replies 4 ·
Pendulum of length l with mass m at end swings over a peg
- holmeskaei
- · Replies 1 ·
Finding velocities after elastic collision between two air track gliders
- twenty5
- · Replies 15 ·
Conservation of Momentum and/or Energy
- holmeskaei
- · Replies 1 ·
Finding Kelper's Constant with only radius or period given.
- zeion
- · Replies 4 ·
Calculating Magnetic Field Around Window Frame
- miggitymark
- · Replies 3 ·
Quick []elastic collision question =)
- twenty5
- · Replies 1 ·
Why Does a Tile Floor Feel Colder Than a Carpeted Floor at the Same Temperature?
- chops369
- · Replies 1 ·
Finding milk mass from final temperature of milk and coffee
- chops369
- · Replies 3 ·
Power transfer and impedence matching.
- duckandcover
- · Replies 1 ·
Estimate the radiation pressure of your finger tip
- Queue
- · Replies 7 ·
Simple harmonic motion problem involving matrices
- ABoul
- · Replies 6 ·
Impulse/Momentum ball into wall Problem
- adorrkable
- · Replies 3 ·
Work and kinetic friction coefficient
- DoctorB2B
- · Replies 16 ·
Proper description of uniform circular motion
- Oijl
- · Replies 3 ·