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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Calculate electric force using Coulomb's law (vector components are the struggle)
- potatogirl
- · Replies 3 ·
Two tourists and a bicycle - uniform motion
- brotherbobby
- · Replies 25 ·
How many people can be on the raft?
- lgeorge
- · Replies 10 ·
Find the magnetic induction vector
- LinguaBrous
- · Replies 3 ·
Blowing Into Your Own Sail
- rosedog09
- · Replies 25 ·
Drag Forces and Terminal Velocity
- rosedog09
- · Replies 8 ·
Why the need to be careful opening a switch on this RL circuit?
- zenterix
- · Replies 6 ·
Ratio of frequency between heavier and lighter part of composite cord
- songoku
- · Replies 4 ·
High school physics homework problem set
- Owen Ploe
- · Replies 6 ·
Current in circular wire surrounding infinite solenoid in a circuit
- zenterix
- · Replies 7 ·
Determining the sound level of a leaf blower
- barryj
- · Replies 1 ·
Average velocity in different coordinate systems
- Manish_529
- · Replies 27 ·
GRIN Lens - Gradient Coefficient Expression
- Schreiber__
- · Replies 5 ·
Star life cycle and celestial body formation research paper
- perlastudies
- · Replies 5 ·
Torque on a Pivot Point With Multiple Forces and Different Directions
- rosedog09
- · Replies 6 ·
Variation of escape velocity with equal surface gravity
- sachin
- · Replies 7 ·
How to calculate gamma ray energies following beta decay?
- oleosquarewave
- · Replies 12 ·
Minimum force to tip the bin over
- sdfsfasdfasf
- · Replies 7 ·
Depth of a basketball floating on water
- brotherbobby
- · Replies 9 ·
Keplerian Telescope and real image
- xchen2004
- · Replies 7 ·
Concept about photoelectric effect
- songoku
- · Replies 17 ·
Dynamic system of self balancing robot
- JVDC
- · Replies 4 ·
Max inversion temperature for a gas (Dieterici’s equation of state)
- jonny997
- · Replies 4 ·
Closed cycle of an ideal gas
- imdesperate
- · Replies 3 ·
Why is the tension in a massive cable always tangent to its portion?
- Karol
- · Replies 5 ·
Statistical mechanics: particles in magnetic fields
- MatinSAR
- · Replies 2 ·
Calculating Magnetic Field at Point P for Perpendicular Current-Carrying Wires
- Kartofen69420
- · Replies 2 ·
Calculation of Ramp Jump Distance Using Projectile Motion Formulas?
- Amaretto
- · Replies 12 ·
Designing a power system with hot air, steam and lake water
- Simonglo
- · Replies 3 ·
Max Impulse on a pendulum
- PakBosMuda
- · Replies 1 ·
Angle that makes kinetic and potential energy of simple pendulum equal
- DrBanana
- · Replies 2 ·
Introduce a battery to an LR circuit
- laser
- · Replies 16 ·
Planar pendulum with rotating pivot
- member 731016
- · Replies 7 ·
What Are the Assumptions and Calculations for Sheet of Charge Theory?
- Iamconfused123
- · Replies 1 ·
Cables, pulleys, 2 weights
- DylanMurfly
- · Replies 4 ·
Balmer series experiment
- MatinSAR
- · Replies 2 ·
Spherical pendulum confusion [Issue resolved]
- member 731016
- · Replies 2 ·
Launch service between two stations along a flowing river
- brotherbobby
- · Replies 21 ·
Book plots position & force on the same graph, still gets right answer
- DrBanana
- · Replies 8 ·
Why is source force + electrostatic force = 0 inside battery?
- zenterix
- · Replies 10 ·
Relativistic motion and length contraction
- the farmer
- · Replies 44 ·
Why does angular velocity depend only on perpendicular velocity in planar motion?
- tellmesomething
- · Replies 6 ·
Critical frequency of Faraday Waves?
- Anjish
- · Replies 6 ·
Find starting velocity from golfer launching ball
- bremenfallturm
- · Replies 7 ·
Why is the electric field inside a conducting hollow/filled sphere zero?
- aryan kumar pandey
- · Replies 2 ·
Slope of N - t graph of radioactive decay
- songoku
- · Replies 2 ·
What is the middle line in electron-positron annihilation Feynman diagram?
- songoku
- · Replies 4 ·
Coupled oscillator question
- member 731016
- · Replies 2 ·
Tension in a Two-Crate System on a Frictionless Surface
- babaypenguin88
- · Replies 7 ·
Forces at play in a pendulum
- tellmesomething
- · Replies 7 ·
How do I fix the signs in Faraday's Law in RL Circuit?
- zenterix
- · Replies 5 ·
Resistivity calculation from two-probe resistance measurement of sheet
- no_einstein
- · Replies 2 ·
Simple pendulum with moving support
- member 731016
- · Replies 4 ·
Change in the unit vectors
- Manish_529
- · Replies 10 ·
Coupled pendulum-spring system
- member 731016
- · Replies 3 ·
Field transformations in the z-direction
- milkism
- · Replies 7 ·
Pendulum attached to a rotating vertical disk
- member 731016
- · Replies 2 ·
The value of the spring constant k that I calculate seems too high
- dannolul
- · Replies 11 ·
Is electromotive force the sum of electric and motional terms?
- zenterix
- · Replies 1 ·
Length of string in a standing wave
- laser
- · Replies 19 ·
Finding Ex and Ey components for electric dipole field
- Ben2
- · Replies 3 ·
Understanding a very simply RL circuit
- zenterix
- · Replies 1 ·
Small oscillations of a simple pendulum placed on a moving block
- MatinSAR
- · Replies 73 ·
Measuring g on an inclined air track using conservation of energy
- Envy9268
- · Replies 12 ·
Will two boxes sliding toward each other with friction collide?
- Jim Alexandridis
- · Replies 6 ·
Flashing light beacon from Earth reaching spaceship moving away at 0.75c
- neelbansal123
- · Replies 5 ·
Rolling Sphere On Incline
- Randomized10
- · Replies 1 ·
Block sliding on a semicircular track with friction
- zuzelle
- · Replies 10 ·
The maximum reversible work in thermodynamics (2)
- tracker890 Source h
- · Replies 1 ·
Deriving formula for sphere displacement vs water flow rate using Bernoulli's principle
- printereater
- · Replies 207 ·
Impulse and momentum / work-energy
- GoonP
- · Replies 5 ·
The maximum reversible work in thermodynamics
- tracker890 Source h
- · Replies 22 ·
Do you graph the energy levels of a ##1s^1## atom the same as a ##1s^2## atom?
- Danielk010
- · Replies 12 ·
Conservation of momentum (center of mass) in projectile launches
- TheGreatDeadOne
- · Replies 15 ·
Range of frequency heard by observer related to Doppler effect
- songoku
- · Replies 8 ·
Vertical displacement with time of a projectile
- hello478
- · Replies 48 ·
Spring Constant Force Problem Help
- Thana
- · Replies 12 ·
Is current flowing into a battery always equal to current flowing out?
- laser
- · Replies 12 ·
Transmitted wavelength at glass/air interface using phase continuity
- vera1
- · Replies 1 ·
Understanding self-inductance in a solenoid.
- zenterix
- · Replies 3 ·
Condition for resolution of two point sources of light
- songoku
- · Replies 2 ·
How do I model this function? (Damped Harmonic Motion)
- daisy7777
- · Replies 19 ·
Emf in coil rotating inside magnetic field
- songoku
- · Replies 3 ·
Refraction of light when traveling from air to glass
- songoku
- · Replies 6 ·
Finding critical angle for total internal reflection
- vwoods316
- · Replies 13 ·
Origin of repulsive force on a magnet approaching conducting ring?
- zenterix
- · Replies 5 ·
A wheel of radius r rolls along a curve
- annamal
- · Replies 13 ·
Electronic Circuits - Calculate voltage
- agatha
- · Replies 4 ·
Newton's third law and weight
- hello478
- · Replies 13 ·
Query related to Two-Dimensional Motion
- Gargi
- · Replies 9 ·
Camera drone and speed of air below it
- hello478
- · Replies 5 ·
Graph of viscous force and velocity
- hello478
- · Replies 15 ·
Projectile motion, initial height and range given, find initial velocity
- dainceptionman_02
- · Replies 8 ·
Need to derive a formula for the number of red giants
- Rageuke
- · Replies 8 ·
Finding velocity from time dilation with two unknowns
- MatinSAR
- · Replies 22 ·
Derive trig equations 4, 5, and 6 from 1, 2, and 3
- jfnn
- · Replies 13 ·
Friction - same direction as motion?
- mancity
- · Replies 10 ·
Center of mass acceleration for an inclined plane and mass m
- Sam Jelly
- · Replies 18 ·