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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Measuring gravitational force of the Earth
- Ipos Manger
- · Replies 25 ·
Very interesting incline problem
- jakeyboy
- · Replies 1 ·
Calculating the Net Charge Enclosed by a Closed Surface
- MissPenguins
- · Replies 7 ·
Angular momentum and its conservation
- tsopatsopa
- · Replies 1 ·
How can I do a fantastic EEI for Physics?
- FreezeFlow
- · Replies 3 ·
Why Does the Voltage at Point B Measure 30V?
- james11223
- · Replies 3 ·
Graph of frictional force vs angle of inclination
- jontyjashan
- · Replies 2 ·
Reflection of a Wave on a Wall: Amplitude Calculation
- Lynden L
- · Replies 1 ·
What Happens to the Electric Field at X=3cm Between Two Protons?
- Lynden L
- · Replies 1 ·
What is Heisenberg's Uncertainty Principle?
- clementc
- · Replies 2 ·
How long does it take to get to the nearest star?
- frostedpoptar
- · Replies 12 ·
Bird's speed relative to person on ground
- maff is tuff
- · Replies 2 ·
Solve Acceleration Problem: Car Starts at Rest & Travels 200m
- Nickles
- · Replies 8 ·
Where does the energy go when lifting a rope?
- Order
- · Replies 12 ·
Differential equation of motion
- tomwilliam
- · Replies 3 ·
Dynamics: rogid bodies force and acceleration
- etotheix
- · Replies 3 ·
How Fast Was the Truck Moving Before the Collision?
- twistedcolors
- · Replies 1 ·
Kinetic energy - what is the exact definition
- logearav
- · Replies 6 ·
Calculating Energy of Photoelectrons Ejected from a Magnesium Surface
- euphoriax
- · Replies 2 ·
Simple Harmonic Motion and frequency
- andyatk14
- · Replies 3 ·
Dynamics Question on projectile motion
- leonsilavant
- · Replies 1 ·
Projectile Motion - Is my work correct?
- AnomalyCoder
- · Replies 7 ·
How Does a Nuclear Explosion Affect Shock Wave Radius?
- eliassiguenza
- · Replies 1 ·
Physics particle velocity kinematics question
- b-pipe
- · Replies 8 ·
Design Physics Experiment with Matches: Help Needed
- gurtaj
- · Replies 5 ·
Elevator & Forces: Acceleration & Normal Force
- wolves5
- · Replies 2 ·
Finding the time of arrival between two balls in air using kinematics
- garcia1
- · Replies 5 ·
Earthquake Waves: Calculate Distance from Station
- maff is tuff
- · Replies 2 ·
What will happen to the crate of eggs when a truck makes a sharp left turn?
- wolves5
- · Replies 1 ·
Help with determining brightness of light bulbs in a circuit
- brom123
- · Replies 2 ·
Calculating Acceleration and Tension in a Two-Block System with Friction
- wolves5
- · Replies 3 ·
Find the Kinetic Frictional Force on a 9kg Block on an Incline
- wolves5
- · Replies 1 ·
OUNT OF ENERGY REQUIRED TO LIFT A SATELLITE TO 400 KM ALTITUDE
- obnoxiousris
- · Replies 11 ·
Circular motion, find V when only given m and r
- Eats Dirt
- · Replies 3 ·
What is the Speed Needed for Orbit at Earth's Surface?
- Da Apprentice
- · Replies 7 ·
Reducing Hip Fracture Risk with Elastic Hip Pads: What Acceleration is Needed?
- maff is tuff
- · Replies 4 ·
Why would the spring constant change?
- backtoearth
- · Replies 8 ·
Kinetic and Potential Energy Problem Solving
- Callen9
- · Replies 2 ·
Charges mass on the end of a light string
- MissPenguins
- · Replies 8 ·
How Do You Determine the Direction of a Force?
- james11223
- · Replies 3 ·
Intro Physics distance-to-a-stop
- maff is tuff
- · Replies 4 ·
Intro Physics Distance Travelved Question
- maff is tuff
- · Replies 7 ·
Solar constant and the Earth surface
- pincopallino
- · Replies 7 ·
Maximum Weight Limit for Roof-Mounted AC Unit: Solving with Trigonometry
- maff is tuff
- · Replies 6 ·
How Do You Calculate the Phase Constant in Simple Harmonic Motion?
- ubbaken
- · Replies 7 ·
How Do You Solve a Problem Involving Wire and Power Dissipation?
- james11223
- · Replies 7 ·
Find the forces exerted by the floor and the wall at Q and R?
- devvaibhav
- · Replies 4 ·
Little help needed with a simple physics assingment
- Lajka
- · Replies 14 ·
Calculating Weight Component on Hillside | Trig/Physics Homework Question
- maff is tuff
- · Replies 5 ·
What are the different methods to calculate vector products?
- draotic
- · Replies 2 ·
Solving for the final velocity of an object thrown off of a Martian Volcano
- garcia1
- · Replies 4 ·
Complex Number Inequalities: Sketching Solutions
- nayfie
- · Replies 5 ·
How High Do Crossing Stones Meet When Thrown from Opposite Ends of a Cliff?
- gtn013
- · Replies 3 ·
Unsure if I should be using average velocity to solve this problem
- garcia1
- · Replies 8 ·
Calculating dimensions of power
- fran1942
- · Replies 2 ·
Rotational Collisions: Putty Wad
- ledphones
- · Replies 14 ·
Solving the Mystery of X Nucleus Binding Energy
- Darkmisc
- · Replies 3 ·
Solving AC Movement with Shafts A & B: Find P & Vc
- Femme_physics
- · Replies 13 ·
Why is the Electric Field 0 Inside a Nonconducting Shell?
- reising1
- · Replies 17 ·
Fridge on Truck Homework: Find Normal Force, Forces Exerted & Rope Tension
- ledphones
- · Replies 1 ·
What Is Wrong with My Washer Method Calculation?
- talk2glenn
- · Replies 4 ·
Cannot figure out how these conversion factors came about to this answer?
- j2dabizo
- · Replies 1 ·
Gravitational Force due to Earth, Moon, and Sun
- snb29
- · Replies 2 ·
Using free fall acceleration to find another acceleration
- garcia1
- · Replies 3 ·
Ball rolling in a hemispherical bowl (model oscillation)
- eon714
- · Replies 5 ·
Max distance to place an object so it won't slide (torque and friction)
- Femme_physics
- · Replies 53 ·
Calculate Mass of Nitrogen in 2.5 atm, 0.2 m3, 300C
- teggenspiller
- · Replies 10 ·
How to Transform a Circuit to One Resistor?
- builder_user
- · Replies 33 ·
Find the ratio (ideal gas laws) how to get a Ratio between two numberS>
- teggenspiller
- · Replies 10 ·
Water falling into bucket, Force question
- Leeoku
- · Replies 5 ·
[Help] Grade 12 University Prep Physics Design Project
- dancekevin
- · Replies 2 ·
Power Loss in transmission lines: Which method is correct?
- PaulK
- · Replies 2 ·
Solving Simple Pulley Question: Magnitude of Reaction Force on Pin A
- Dalmighty
- · Replies 2 ·
Question regarding distance traveled by a trebuchet
- permapoop
- · Replies 3 ·
True or false: about Transformers
- PaulK
- · Replies 1 ·
Bullet hitting stationary Target.
- Adarshaero
- · Replies 8 ·
What is the angle between B and C if A.B = 0 and A x C = 0?
- draotic
- · Replies 11 ·
How is the Induced Magnetic Field Inside a Coil Determined?
- mad_monkey_j
- · Replies 24 ·
Calculating Vector Product of A and B
- draotic
- · Replies 8 ·
Why Do Equal Forces on Different Masses Result in the Same Height?
- mrlucky0
- · Replies 4 ·
I just don't understand this Spring - ElectroStatic problem
- flyingpig
- · Replies 24 ·
Using Kinematics to find the Distance of an object dropped from rest
- garcia1
- · Replies 1 ·
Force and Volume Relationship in Fire Hose Operation
- Ipos Manger
- · Replies 9 ·
Find the resistance through a resistor
- Resmo112
- · Replies 43 ·
Understanding Bidimensional Movement: A Homework Guide
- Jimmy84
- · Replies 5 ·
Torque and angular momentum with ball shot into air
- physicsklutz
- · Replies 4 ·
What is the moment of inertia of a disk with a hole about the Z-axis?
- ledphones
- · Replies 4 ·
What is the Moment of Inertia of a Disk with a Hole?
- ArticMage
- · Replies 2 ·
Solving the Concave Lens Problem for a Hotel Room Peephole
- itsgood819
- · Replies 2 ·
Calculating Wavelength and Understanding Sound Interference in a Room
- fran1942
- · Replies 6 ·
What is the pressure in terms of pi?
- teggenspiller
- · Replies 2 ·
What is the energy equivalent of a proton-antiproton pair?
- dandy9
- · Replies 4 ·
Equivalent resistor of 2011 resistor web
- pincopallino
- · Replies 7 ·
Fishing reel and restraining torque
- ajmCane22
- · Replies 1 ·
Finding Instantaneous UL and iL After Commutation for Transients (LC) Physics
- builder_user
- · Replies 55 ·
Simple harmonic motion and particle speed
- ahhgidaa
- · Replies 10 ·
How to find out the range of a spring?
- andy_loud
- · Replies 1 ·
How Do Pulley Systems Affect Block Speeds with Friction and Spring Forces?
- obnoxiousris
- · Replies 13 ·
How Do Cosmic Rays Travel Through Earth's Atmosphere?
- najisalem2009
- · Replies 1 ·
10 moles of an ideal gas has a gauge pressure of 2 atm what is new T? no clue
- teggenspiller
- · Replies 14 ·