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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Eratosthenes' Measurement of Earth's Circumference
- pbody
- · Replies 10 ·
Gage pressure at point A in a multifluid manometer
- GZunich
- · Replies 1 ·
Speed of a Proton in An Electric Field
- servb0t
- · Replies 1 ·
How did Aristarchus measure the moon's distance using similar triangles?
- pbody
- · Replies 6 ·
Rounding Sig Figs: 6.941+63.996+35.45 = 106.387
- alicia113
- · Replies 4 ·
Force exerted by a seatbelt, on driver, after collision
- Iciris.0
- · Replies 1 ·
Capacitors, Capacitance and Dielectrics
- Peter G.
- · Replies 1 ·
What Defines the Practice of Science?
- pbody
- · Replies 1 ·
Finding the couple vector of this ice boat
- s3a
- · Replies 3 ·
Does the Direction of an Object's Velocity Affect its Rotational Kinetic Energy?
- godel
- · Replies 2 ·
Why does Bernoulli's equation represent energy conservation?
- 06mangro
- · Replies 1 ·
Finding the Overall heat transfer coefficient
- 5carola5
- · Replies 5 ·
Flow of water in a venturimeter
- Karol
- · Replies 2 ·
Find the distance x using Coulomb's law.
- bllnsr
- · Replies 14 ·
Finding reaction forces on segmented beam with axial loads and moment
- giacomh
- · Replies 5 ·
How long does a moun live during a measurement
- DODGEVIPER13
- · Replies 4 ·
How much does Newtons 3rd Law account for Lift in %?
- 06mangro
- · Replies 1 ·
Unit Conversion: SI to British Units with Real-Life Consequences
- Moninder
- · Replies 5 ·
Finding wall thickness for a hollow lead sphere to float in water
- JuliusDarius
- · Replies 20 ·
What is the Frequency of the Sound Wave Produced by a Vibrating Guitar String?
- Northbysouth
- · Replies 1 ·
Basic thermo question: heat engine efficiency
- Samky
- · Replies 1 ·
Kinematics: Constant Acceleration
- SailorMoon01
- · Replies 2 ·
Mass vs. weight with a falling rock and a spring scale
- physicswhiz
- · Replies 8 ·
Making Inferences From Motion Graphs
- Bashyboy
- · Replies 2 ·
Electric field inside a solid sphere
- roam
- · Replies 5 ·
Conservation of Energy in Satellite Motion
- Bennigan88
- · Replies 6 ·
What is the radius of the track
- DOA_Kasumi22
- · Replies 4 ·
Buoyancy to find mass, density and force to submerge
- garrigues
- · Replies 3 ·
The classic car-passing train problem ( really bad)
- simster571
- · Replies 1 ·
Electric Field in a Square Problem
- Kirasagi
- · Replies 2 ·
Magnitude of the electrostatic force
- slk011
- · Replies 3 ·
One-D Kinematic Question w/ rising hot air balloon
- millergc
- · Replies 2 ·
How correct is deriving Coulomb's Law from Gauss's Law
- Steenrod
- · Replies 1 ·
Find Distance Traveled From 40m Height for 20m/s Velocity at 0° Angle
- Gliese123
- · Replies 2 ·
What is the Electric Force in Equilibrium?
- SIUnitConvert
- · Replies 4 ·
Motion project investigation ideas for grade 11
- SydDF
- · Replies 8 ·
Calculating the Tension in Cables for Elevator Movement
- hayley123
- · Replies 7 ·
Finding Propagation of Uncertainty?
- Monkey618
- · Replies 3 ·
Find the currents i1 and i2 in the circuits
- Firben
- · Replies 5 ·
Electromagnetics Question Circuits
- GreenPrint
- · Replies 29 ·
What are the Unknown Resistances in this Circuit with Given Current and Voltage?
- physicsxnoob
- · Replies 15 ·
Calculating kilowatt hours concerning a toaster
- PeachBanana
- · Replies 13 ·
Calculating Average Velocity of a Moving Train: Solving Kinematics Problem
- Hassin
- · Replies 4 ·
Equipartition Theorem and Microscopic Motion
- ghoultree
- · Replies 1 ·
Friction force on an inclined plane
- husker11
- · Replies 2 ·
Compression of a spring with friction
- Scorpy
- · Replies 32 ·
How to calculate the efficiency of a trebuchet?
- physical..O.o
- · Replies 1 ·
Momentum of a free falling object
- nebbione
- · Replies 3 ·
Electric Potential - Work: Negative or Positive
- Peter G.
- · Replies 1 ·
Springs and Impulse (how can I relate them)
- miniradman
- · Replies 3 ·
Average velocity of a falling object problem
- Violagirl
- · Replies 2 ·
Finding the angle of a dive bomber droping a bomb.
- LVanderlinden
- · Replies 1 ·
How Does Coulomb's Law Apply to Non-Point Charged Particles?
- mather
- · Replies 3 ·
How Fast Does the Elevator Reach Its Top Speed?
- Lastone1
- · Replies 4 ·
Tricky Charge/Net Force Problem
- jamesbiomed
- · Replies 10 ·
What Force is Needed to Push a 40kg Sled on Ice with μk = 0.05?
- Shinster007
- · Replies 11 ·
Free falling particle with air resistance
- carlosbgois
- · Replies 2 ·
Motion of a particle on a rotating frictionless turntable
- Tanya Sharma
- · Replies 16 ·
Make a rough estimate of the volume of your body (in cm3).
- Potential123
- · Replies 6 ·
Advanced physics probelm involving conservation, from six ideas Unit C textbook
- physicshard11
- · Replies 1 ·
Cross product of vectors (4i+3j-2k) and (2i-3j+2k)
- oreosama
- · Replies 4 ·
How long does it take for a car to discharge through its tires in a pit stop?
- menco
- · Replies 7 ·
Heat Transfer Rate of 2 Heating Coils on Aluminium Plate
- exec
- · Replies 2 ·
Projectile problem: throwing something off a tower
- sunshine1228
- · Replies 2 ·
Physics of Flight - From where does lift come?
- TheOldDog
- · Replies 18 ·
Finding the Current in a circuit, with series opposing voltage sources.
- Killstudy
- · Replies 1 ·
2-D Kinematics: Distance of Rocket from Launch Pad
- JohnSwine
- · Replies 2 ·
Roller Coaster Friction Problem
- alexcc17
- · Replies 4 ·
Car traveling at two speeds: finding total distance and average velocity
- Violagirl
- · Replies 3 ·
Fluid mechanics gage pressure - did I do it right?
- charlies1902
- · Replies 18 ·
Avg Velocity Avg speed question
- vysero
- · Replies 2 ·
Equivalent angles and Trig Fucntions
- TheCammen
- · Replies 2 ·
Finding various currents around the circuit
- captjackAV
- · Replies 1 ·
Magnitude of momentum between each pair of adjacent locations
- Axking
- · Replies 1 ·
How to find Instantaneous acceleration with points from a graph
- adamgriffis
- · Replies 2 ·
Ohm's Law and its Physical Consequences
- aaaa202
- · Replies 1 ·
Gauss's Law - point charge and charged sphere.
- Katana750
- · Replies 3 ·
Light pulse from moving clock in special relativity
- Government$
- · Replies 1 ·
Motion with Constant Acceleration problem
- zerofaisal33
- · Replies 1 ·
Potential Energy problem (i think)
- nebbione
- · Replies 4 ·
How Long Does It Take for an Aluminum Cube to Warm from 10°C to 20°C?
- digipony
- · Replies 4 ·
30º above the horizontal with initial velocity problem
- Nexion21
- · Replies 7 ·
Current, Power dissipation in a cord
- PeachBanana
- · Replies 6 ·
Super congfused about finding distance with constant acceleration
- Butterfly30
- · Replies 8 ·
The Sun, on average, is 93 million miles from Earth. How many meters is this?
- Potential123
- · Replies 6 ·
Spherical Percent Uncertainty and Violent Storm Question
- berenmacbowma
- · Replies 1 ·
Integrate Plancks Function to find Stefans Law
- DODGEVIPER13
- · Replies 2 ·
[Non-uniform Air Density] Pressure problem
- Gr33nMachine
- · Replies 7 ·
Doubling speed and distance traveled
- Butterfly30
- · Replies 13 ·
Hubble's constant and the age of the universe calculation
- Orcinus
- · Replies 2 ·
Capacitor directly connected to a DC battery.
- vissh
- · Replies 3 ·
Converting 1.419 × 10^6 g to kilograms
- ArcherofScience
- · Replies 2 ·
Basic conversion question physics 101
- vysero
- · Replies 19 ·
Small angle approximation in trigonometry
- Kaldanis
- · Replies 2 ·
Simple Vector Question Related to Conservation of Momentum
- SHISHKABOB
- · Replies 1 ·
Finding the acceleration of a car based on a velocity vs time plot
- LOLItsAJ
- · Replies 1 ·
Calculating electron speed from distance and time
- ArcherofScience
- · Replies 2 ·
Flow of fluid out of vertical tube
- swmmr1928
- · Replies 1 ·
Average G-Force Calculation for Abrupt Deceleration from 30mph in 1m Distance
- bond535
- · Replies 3 ·
Acceleration and weight question
- alexcc17
- · Replies 41 ·