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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What is the technique shown in the green step?
- athrun200
- · Replies 3 ·
Electric field of single photon in a cavity
- Beer-monster
- · Replies 1 ·
Interval notation and specifying units (v vs. t graph)
- Genecks
- · Replies 2 ·
Finding Dimensional Homogeneity
- Physics_Grunt
- · Replies 9 ·
Avg Acceleration problem + question on Speed vs Velocity
- resjsu
- · Replies 3 ·
Solving an Electric Field Problem in Equilateral Triangle Geometry
- pyroknife
- · Replies 5 ·
Displacement vector on a watch?
- skysunsand
- · Replies 15 ·
Finding q' to make E field zero at triangle center
- pyroknife
- · Replies 1 ·
Oscillating String - Transverse Speed, what am I doing wrong?
- Malavin
- · Replies 2 ·
Finding net force on charge in equilateral triangle with three point charges
- cmc87
- · Replies 1 ·
How Do You Add Vectors Using Unit Vector Notation?
- 1MileCrash
- · Replies 3 ·
Calculating the energy loss due to sound emission on collision
- Voekov
- · Replies 7 ·
A vector of magnitude 20 is added to a vector of magnitude 25.
- 1MileCrash
- · Replies 3 ·
What is the Time of Impact for a Falling Mailbag?
- ronaldh12
- · Replies 15 ·
Converting 762 Mg/m to ng/µm
- Yusufzai
- · Replies 1 ·
How to Calculate Resistor Values for Voltage Steps in a Circuit?
- tim345
- · Replies 1 ·
Calculating Magnitude of Resultant Vector for X Added to Y = 12i -16j
- tommy2st
- · Replies 1 ·
Dimensional analysis and exponents
- addedline8
- · Replies 3 ·
Max RANGE of a projectile thrown from the top of a ramp.
- VyRianS
- · Replies 1 ·
Completion of radioactivity equation
- mstud
- · Replies 8 ·
DeBroglie wavelength, kE to (p) conversion?
- Joel DB
- · Replies 1 ·
Finding motion of wedge and block in multi-part problem
- athrun200
- · Replies 25 ·
Power, mass, speed, time and height
- furor celtica
- · Replies 1 ·
Finding cliff height from time to hear rock impact
- amber87
- · Replies 2 ·
Find vector B when A and resultant R are known
- Anester
- · Replies 16 ·
Calculating Vector Equilibrants
- Anester
- · Replies 5 ·
Speed Of A Bullet Before It Strikes A Block Of Wood
- amber87
- · Replies 1 ·
What happens when switch T closes in three RC circuits?
- jaumzaum
- · Replies 18 ·
What Is the Velocity of a Charged Particle in a Crossed Magnetic Field?
- jforce93
- · Replies 3 ·
Simple Harmonic Motion Phase angle
- Jimmy84
- · Replies 3 ·
Finding Period and Angular Frequency in Simple Harmonic Motion
- Jimmy84
- · Replies 1 ·
Reading vernier scale measurement between 0.44 mm and 0.46 mm
- pyroknife
- · Replies 2 ·
What Angle Should the Fireman Aim the Hose to Hit the Same Height?
- i_m_mimi
- · Replies 2 ·
How Does Constant Acceleration Affect a Car's Movement on a Freeway Ramp?
- resjsu
- · Replies 2 ·
Gauss law and insulating sphere
- boris.rarden
- · Replies 2 ·
How Fast Was the Police Car Going When It Was 27 Meters Behind Again?
- mohabitar
- · Replies 2 ·
Minimum Power of the engine on a car climbing a hill
- Matthias85
- · Replies 22 ·
Three forces act on a moving object
- theniknakman
- · Replies 3 ·
Can Any Point Along the Force's Line of Action Be Used to Calculate Moment?
- pyroknife
- · Replies 1 ·
Antelope with constant acceleration over 70 m in 7 s
- resjsu
- · Replies 2 ·
Waves - Displacement dependent upon time?
- Peter G.
- · Replies 3 ·
Velocity/Speed Problems (Studying for exam)
- LucasG
- · Replies 1 ·
What is the pressure on face B of an L-shaped tank filled with water?
- azrida
- · Replies 6 ·
Electric potential, spherical conductor
- sparkle123
- · Replies 6 ·
How Do You Calculate the Angle of a Vector in the Third Quadrant?
- Nat3
- · Replies 8 ·
Why does rounding 52.5 m/s to two significant figures give 52 m/s not 53 m/s?
- Edwardo_Elric
- · Replies 11 ·
Should you round during calculations or only at the end?
- joe465
- · Replies 6 ·
Moment of force along triangular plate edge about point O
- pyroknife
- · Replies 4 ·
Electric Force- Finding angle of Force on q1 due to q2 and q3
- blackbyron
- · Replies 6 ·
Substended angle, rotational kinematics
- bulbasaur88
- · Replies 1 ·
Finding exponents in ocean wave speed equation
- glassy
- · Replies 3 ·
Does Rolling Without Slipping Cause Wheel Deformation?
- e(ho0n3
- · Replies 4 ·
Proportion of planetary-period to the distance-from-the-sun
- glassy
- · Replies 1 ·
Finding Magnitude and Direction of Force on a Charge
- cheerspens
- · Replies 10 ·
What is the equation for calculating the electric field and charges?
- johnhunk
- · Replies 3 ·
Finding Magnitude of a Charge on Sphere
- cheerspens
- · Replies 5 ·
Is -16kN*m Equivalent to 16kN*m CW?
- pyroknife
- · Replies 1 ·
What really makes the lamp comes on, tension, current or potency?
- jaumzaum
- · Replies 4 ·
Electrostatic Force and Coulomb's Law
- cheerspens
- · Replies 6 ·
Texas Instruments Inspire CX trigonometry calculations for statics problem
- Pete789
- · Replies 2 ·
How Do You Calculate Centripetal Force for Circular Motion?
- joe465
- · Replies 6 ·
Coefficient of friction pulley problem
- wallism
- · Replies 13 ·
Frequency of an oscillating mass with springs in series
- laurette1029
- · Replies 1 ·
Relative motion in two dimensions question
- f25274
- · Replies 4 ·
Projectile motion of cannon shell
- pooface
- · Replies 12 ·
Thermodynamics: Ideal gas splitting invention problem
- Beer-monster
- · Replies 2 ·
Which trolley would turn in the smallest circle?
- Dcoz
- · Replies 7 ·
Force exerted by water in a U-shaped tube
- Dansuer
- · Replies 2 ·
Calculating Cannon Ball Barrel Length: Impulse and Velocity
- phizics09
- · Replies 2 ·
Why Does a Heavy Spring Extend Differently Under Its Own Weight?
- randommanonea
- · Replies 1 ·
Second part of hydraulic car jack problem
- Dcoz
- · Replies 4 ·
What Happens to the Missing Energy in a Closed Circuit with Capacitors?
- jaumzaum
- · Replies 4 ·
Coulomb's Law and Electrostatic Forces Problem
- cheerspens
- · Replies 6 ·
Entropy of running water around a resistor
- bmarson123
- · Replies 1 ·
What is the Acceleration Experienced in Jules Verne's Moon Launch Scenario?
- stumphead101
- · Replies 8 ·
Finding building height from time to fall last 2.0 m
- DJ-Smiles
- · Replies 12 ·
Simple banked curve, centripetal acceleration problem
- bulbasaur88
- · Replies 13 ·
Diffraction Patterns: Calculate Wavelength of Light
- roam
- · Replies 4 ·
Error Propagation - multiplication vs powers
- Caspian
- · Replies 7 ·
What is the relationship between water level and wavelength in a wine glass?
- SugerQueen
- · Replies 10 ·
Calculating the Speed of a Space Shuttle After 55.2 Seconds
- Goopy17
- · Replies 12 ·
Determine the number of N of digital bits
- tavo0116
- · Replies 5 ·
Resistors in Series Calculations including Uncertainties
- daveco-inc
- · Replies 6 ·
Speed of mailbag dropped from descending helicopter after 4 seconds
- stumphead101
- · Replies 1 ·
What is the Relevance of the Second Solution in a Quadratic Equation?
- iampaul
- · Replies 1 ·
Can Tom Ogle's Vapor Engine Claims Be Debunked?
- aroc91
- · Replies 1 ·
You nose out a runner to win the 100 meter dash. If your total time
- Goopy17
- · Replies 1 ·
Right triangle with b=17.8m and θ=65°, find a and c
- Goopy17
- · Replies 5 ·
Is My Vector Addition Method Correct?
- hyde2042
- · Replies 4 ·
Calculating Spring Potential Energy in a Total Energy System
- flyingpig
- · Replies 4 ·
Current Induced in Loops by Resistance Change
- Hypercubes
- · Replies 3 ·
Place following in scientific notation
- Goopy17
- · Replies 1 ·
Finding the speed of a ball given some height and falling speed
- skysunsand
- · Replies 5 ·
How do I solve for the velocity in a banked curve with friction?
- bulbasaur88
- · Replies 16 ·
What Is the Correct Acceleration When an Object Stops Suddenly?
- Nat3
- · Replies 8 ·
Gravitational force from a ring on a point mass at distance x
- carlosbgois
- · Replies 2 ·
Detecting Circularly Polarized Light with Half-Wave Plates and Polarizers
- silin
- · Replies 1 ·
Reaction between net charge and no net charge
- loganblacke
- · Replies 1 ·
Static friction coefficient question
- hamsterpower7
- · Replies 3 ·
What is the Charge on the metal plate?
- loganblacke
- · Replies 1 ·