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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Cannon Fire! Senior Physics Research Project
- Michael17
- · Replies 1 ·
Electric Field Problem in a Tube
- mburt3
- · Replies 3 ·
Finding acceleration from position data with the kinematic equation
- CustardPi
- · Replies 4 ·
What Is the Final Charge on Sphere C?
- Nivlac2425
- · Replies 2 ·
Solve Spring Mass Change Problem: Find Distance for 4kg Mass
- Jamboree
- · Replies 3 ·
How Fast Does a Bowling Ball Travel When It Falls Off a Table?
- Michael17
- · Replies 1 ·
How many of C8H8's electrons has it gained/lost?
- mono_ten
- · Replies 1 ·
Change in Velocity: Find Solution and Reasoning
- yowatup
- · Replies 5 ·
Block held against a spring going up a frictionless plane
- TaxiDriver113
- · Replies 3 ·
Lose weight (mass) or train? - effect of losing weight (mass) on power
- Byrne
- · Replies 1 ·
Find the coefficient of kinetic friction?
- kadavis2010
- · Replies 4 ·
Kinetic Energy: What am I doing wrong?
- kadavis2010
- · Replies 4 ·
Electric fields and equipotentials
- dasblack
- · Replies 1 ·
Spring stretched to store 47 J of elastic potential energy
- kadavis2010
- · Replies 3 ·
Elastic Potential Energy Physics Problem
- chops369
- · Replies 4 ·
What is the heat capacity of the tires of the car?
- aps0324
- · Replies 3 ·
Solve for the amount of force on an 8kg ball
- gigglin_horse
- · Replies 6 ·
Tension in calf muscle and force on foot from shinbones
- Stratosphere
- · Replies 4 ·
Table tennis and air resistance
- Michael17
- · Replies 3 ·
Time for electron to travel between parallel plates 9 cm apart
- wayneinsane
- · Replies 1 ·
How do you change a base directly without using base 10 or base 2?
- elcotufa
- · Replies 3 ·
Radius of core, using densities
- bocobuff
- · Replies 3 ·
What fraction of a 100kg cube floats in fluid with specific gravity 1.2?
- jan2905
- · Replies 1 ·
Significant figures in one of the Sears and Zemansky book problems?
- FountainDew
- · Replies 2 ·
Electromagnetism and Polarisation question
- jazznaz
- · Replies 3 ·
Epotential of Point Charges - Really Hard Conceptual Problem
- miguzi
- · Replies 14 ·
Astrophysics - Apparent Magnitude of stars in a close binary system
- goldilocks
- · Replies 1 ·
Speed at 5 Seconds on Linear Plot with Slope 5.0 m/s2
- fatmike6305
- · Replies 1 ·
How Is the Mass of a Hollow Sphere Calculated in Water?
- dnp33
- · Replies 3 ·
Work Done by moving point charge
- DANIELLYMA
- · Replies 3 ·
Laser Pointer Wave Energy and eyes seeing
- TFM
- · Replies 12 ·
How do different track shapes affect the travel time of a mass?
- jan2905
- · Replies 1 ·
Resistance and Power Probelm (again)
- johnson.3131
- · Replies 1 ·
Expressing vector C using law of cosines with angle theta
- fishguts
- · Replies 3 ·
Questin about moving an object through liquid
- kevinf
- · Replies 4 ·
The Oscillation Period of A Rod Pivoted at One End
- Beginner@Phys
- · Replies 4 ·
How to Calculate Power and Energy Usage in Electrical Devices
- johnson.3131
- · Replies 2 ·
Maximum particle displacement in a sonic boom wave
- markmai86
- · Replies 6 ·
Specific Gravity, weight and acceleration
- jan2905
- · Replies 6 ·
Special relativity - velocity additions/energy
- hadroneater
- · Replies 4 ·
How Fast is a Golf Ball Traveling 10m After Being Dropped from a Cliff?
- Michael17
- · Replies 3 ·
How Do You Apply Kirchhoff's Rules to a Series Circuit with Multiple Resistors?
- Elbobo
- · Replies 1 ·
Problem 3.62, Young and Freedman-On the Flying Trapeze
- james brug
- · Replies 1 ·
Velocity of 1-dimensional projectile
- notReallyHere
- · Replies 1 ·
Angle for destructive interference of direct and reflected radio waves
- adelianne
- · Replies 1 ·
Excess Electricial Charge Fraction
- perfection256
- · Replies 1 ·
What is the Net Electric Field Vector at a Point Due to Two Charges?
- perfection256
- · Replies 2 ·
Velocity When a Runner Covers Half a Lap
- Bottomsouth
- · Replies 7 ·
Calculating net force on a charge placed at a spot
- phys62
- · Replies 1 ·
How Do You Calculate the Mass of a Block from a Bullet and Spring Collision?
- blindsided
- · Replies 1 ·
Understanding Fluid Resistance and Drag Forces in Swimming and Tug of War
- ritwik06
- · Replies 7 ·
What is the total resistance in the given circuit?
- Gregg
- · Replies 1 ·
Finding Equilibrium: Solving for Net Gravitational Force on a Mass
- moaath
- · Replies 1 ·
Finding final velocity in a perfectly elastic collision
- ilovedeathcab
- · Replies 2 ·
100 meter sprint with variable acceleration phases
- grimsdale
- · Replies 5 ·
Electric Field and two point particles
- fallen186
- · Replies 1 ·
Calculating Maximum Height of a Rocket in Free Fall
- Bottomsouth
- · Replies 4 ·
Golf Ball Problem-elastic collision
- ihatephysics7
- · Replies 1 ·
Blocks, a spring, and a collision
- ~christina~
- · Replies 15 ·
Conservation of energy/ efficiency question.
- maccha
- · Replies 7 ·
Projectile motion: trapeze catch at 53° angle
- scorpa
- · Replies 21 ·
How Does a Gardner Shower Jet's Range Impact the Wall's Wetted Area?
- succhi
- · Replies 1 ·
Solving a 2-Mass System Connected by a Rope
- raptik
- · Replies 1 ·
How Is the Third Piece's Velocity Determined After a Grenade Explosion?
- tornzaer
- · Replies 3 ·
How Do You Calculate Displacement and Distance in Physics Problems?
- aspen1234
- · Replies 3 ·
Finding y-component of force on 2.6 µC charge from three charges
- fallen186
- · Replies 1 ·
Bernoulli's equation for flow through a pipe with changing diameter
- jan2905
- · Replies 4 ·
Calculating Braking Force for a 3000 lb Car
- NYCHE89
- · Replies 3 ·
The Electric Field Due to a Charged Disk
- brcole
- · Replies 1 ·
Finding the radius of a brass ball using tension?
- rought
- · Replies 9 ·
Hiker displacement with three vector legs and signs
- ipwnj00
- · Replies 5 ·
Hand force needed to crack a nut with pliers
- Stratosphere
- · Replies 6 ·
Finding current through R2 with VAB=125V, R1=17Ω, R2=84Ω, R3=24Ω
- dgoudie
- · Replies 6 ·
Linear Expansion related to area expansion
- student 1
- · Replies 4 ·
Finding net force from 40 N and 30 N forces using components
- Turquoise
- · Replies 2 ·
What is the mechanical advantage calculation for cracking a nut with pliers?
- Stratosphere
- · Replies 6 ·
Calculate power with v on inclined plane with miu
- sciencescienc
- · Replies 7 ·
Maximum torque from hanging on a 50 cm wrench
- Stratosphere
- · Replies 22 ·
Are the red or green resistors in parallel in this DC circuit?
- Elbobo
- · Replies 2 ·
Why Does Using High Voltages in Power Transmission Reduce Losses?
- paul_harris77
- · Replies 1 ·
What Weight Should Be Hung at Point P for Horizontal String?
- ritwik06
- · Replies 1 ·
Do Normal Forces Always Exist When Surfaces are in Contact?
- ritwik06
- · Replies 2 ·
Solving Gas Pressure Law: 4.5*10^5Pa to 1*10^5Pa
- BadlyAddicted
- · Replies 1 ·
Do Balls Thrown Up and Dropped Down Meet Above the Halfway Point of a Building?
- UMich1344
- · Replies 1 ·
Force exerted by table on falling chain after distance x
- cordyceps
- · Replies 6 ·
Is it possible to find the answer?
- phys1618
- · Replies 1 ·
How can I find the acceleration and tension in a block and pulley system?
- vpv
- · Replies 10 ·
Which electric field is larger?
- -EquinoX-
- · Replies 2 ·
One-dimensional lattice (electrostatics)
- asi123
- · Replies 4 ·
Watermelon and Superman experiment
- BMWPower06
- · Replies 1 ·
Total outward force of molasses on cylindrical tank
- kurosaki_ichi
- · Replies 15 ·
Calculating Electric Fields Using Coulomb's Law
- AbbyGirl
- · Replies 2 ·
Calculating Normal and Frictional Forces on a Parked Car on an Inclined Road
- luap12
- · Replies 2 ·
How Do You Square Cosine B?
- chemic_23
- · Replies 4 ·
Find out the number of batteries needed to power 5 devices of 12V for 18 hours
- jesschin
- · Replies 3 ·
An electron moving across capacitor problem
- KillerZ
- · Replies 3 ·
Electric Fields, Finding the zero field point
- Oblivion77
- · Replies 11 ·
Kite string force, negative or positive>
- 2clients
- · Replies 1 ·
Friction, Forces, Coefficient of Friction (True/False) Simple
- FAJISTE
- · Replies 2 ·
Calculating Work Required to Move a Point Charge of +8μC from (0,4m) to (3m,0)
- jan2905
- · Replies 9 ·