Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Is There an Error in the Angle Calculation for the Emergent Ray from a Prism?
- jemerlia
- · Replies 2 ·
Proving Vector Space of 3-Tuples Fulfilling 3x1 - x2 + 5x3 = 0
- alexngo
- · Replies 4 ·
Finding the Critical Angle of Glass in Water
- qszwdxefc
- · Replies 3 ·
How Does Bending Your Knees Reduce the Impact Force When Jumping?
- JaKaL
- · Replies 1 ·
Finding Maximum Force for Sled Without Lifting
- yitriana
- · Replies 2 ·
How Do I Isolate Velocity in the Lorentz Factor Equation?
- phys121
- · Replies 6 ·
What Angle Should an Incline Be for Zero Acceleration with Friction?
- quirty1
- · Replies 6 ·
Spring constant from oscillation equation y(t) = 1.2sin(3.1415t)
- sarah895
- · Replies 2 ·
Find period of circular disk physical pendulum
- synchronous
- · Replies 3 ·
Friction Due to Jumping w Parachute
- BandGeek13
- · Replies 8 ·
Find the temperature coefficient of metal X
- icystrike
- · Replies 3 ·
Theory questions about Newton's Laws and Gravitation
- ohsolost
- · Replies 4 ·
How Much Time Does It Take to Boil Water on a Stove with AC Power?
- runfast220
- · Replies 6 ·
What Was the Launch Angle of the Projectile?
- un0rth0d0x
- · Replies 12 ·
Solving Baseball Impulse and Force Problems
- jaron
- · Replies 3 ·
Calculating Forces and Efficiency of a Pressure Washer
- Cret
- · Replies 2 ·
How Fast Must the Cylinder Rotate to Keep Passengers from Sliding?
- jks8686
- · Replies 3 ·
Dimension of Angle: Learn LL^-1 from Course Book
- HussanAli
- · Replies 3 ·
Calculating Heat Energy for Object's Altitude Increase from 100 to 400 km
- brentwoodbc
- · Replies 12 ·
Electric Field Question (Between two plates)
- Brendanphys
- · Replies 2 ·
Conservation of Energy in a Sliding Box on an Incline
- physics hater
- · Replies 2 ·
What is the Angle Between Forces A and B?
- Procrastinate
- · Replies 2 ·
North and south celestial poles
- xX1SHOt
- · Replies 5 ·
Car Velocity: Understanding Relative Velocity and its Effects
- blessmeu2000
- · Replies 2 ·
Multiple choice questions on equilibrium and Newton's laws
- FANDANGLER
- · Replies 2 ·
How Do You Convert a Vector into Cartesian Unit Vector Notation?
- aessex
- · Replies 4 ·
Which Pool Had More Heat Transferred: A or B?
- IUBritt09
- · Replies 3 ·
How Does Variable Friction Affect Object Movement on an Inclined Plane?
- introphysics
- · Replies 6 ·
Charged Ball on String: Tension and Vertical Movement Explained
- bodensee9
- · Replies 1 ·
How do I solve for the equilibrium of a cable system?
- brentwoodbc
- · Replies 7 ·
Max Horizontal Force for Two Blocks to Accelerate Without Slipping
- Patta1667
- · Replies 5 ·
Acceleration of block M1 with pulley constraint
- Patta1667
- · Replies 9 ·
Spring constant of Achilles tendon
- tag16
- · Replies 2 ·
How Does Air Resistance Modify the Equation for Falling Objects?
- affans
- · Replies 7 ·
Spring constant of car suspension with 3 Hz oscillation frequency
- synchronous
- · Replies 2 ·
Solving Oscillation Problems with Steel Ruler Measurements
- Noiro
- · Replies 24 ·
The Internal Energy of Neon Gas
- PrideofPhilly
- · Replies 5 ·
Find Capacitance for Camera Flash Unit
- SimonZ
- · Replies 4 ·
Finding electron velocity from 3000V gun in magnetic field
- jnbfive
- · Replies 12 ·
How Does Halving the Radius Affect the Period in Centripetal Acceleration?
- smillphysics
- · Replies 1 ·
Bullet fired horizontally around the Moon
- blackboy
- · Replies 13 ·
Variable Resistor/Potentiometer
- Procrastinate
- · Replies 2 ·
WEIGHT and ACCELERATION as you FALL and CLIMB UP
- sousou_88
- · Replies 3 ·
What is the magnitude of the elevators acceleration
- catmd13
- · Replies 9 ·
What is the speed and pressure of water exiting a cylindrical tunnel in a dam?
- chawkdee
- · Replies 5 ·
Finding damping time constant from spring amplitude decay
- Liketothink
- · Replies 4 ·
Projectile thrown up an incline, max distance?
- sabinscabin
- · Replies 5 ·
When Does the Wave Reach Maximum Displacement?
- kathyt.25
- · Replies 1 ·
Strength of magnetic field F = ILBsin(theta)
- zeion
- · Replies 1 ·
Physics - Vectors and 2D motion
- johnnyies
- · Replies 1 ·
Tire Pressure Gauge Reading at 44.2°C
- PrideofPhilly
- · Replies 8 ·
Calculating Current and Voltage in Series and Parallel Circuits
- jsalapide
- · Replies 4 ·
Submarine Torpedo Momentum Question: Solving for Velocity Change
- ppl k1ll3r
- · Replies 7 ·
What's the acceleration of the 2kg block?
- bodensee9
- · Replies 5 ·
Finding speed of light in a material from critical angle of 32.4°
- jaron
- · Replies 2 ·
Time an object takes to oscillate
- Liketothink
- · Replies 1 ·
Figure skater spinning with arms in and out
- jmb07
- · Replies 2 ·
Finding Phase Constant and air-track glider
- Liketothink
- · Replies 18 ·
Solving Amplitude Problem for Air Track Glider
- Liketothink
- · Replies 14 ·
Find Amplitude of Glider in Air-Track Oscillation
- Liketothink
- · Replies 9 ·
Solving a Pulley System: Find Acceleration a
- bodensee9
- · Replies 1 ·
Calculating Bullet Trajectory Distance at 30° Angle
- Robert Alan
- · Replies 14 ·
Calculating Energy Expenditure for Weight Loss Through Stair Climbing
- xX1SHOt
- · Replies 2 ·
Ampere's Law (I think). Induced current from current carrying wire
- in10s3gamer
- · Replies 12 ·
What Causes the Net Torque on a Uniform Disk?
- whitesox
- · Replies 4 ·
Right circular cylinder volume with radius 2.36 cm and length 44 cm
- skandol
- · Replies 2 ·
How Does Archimedes' Principle Determine Buoyant Force?
- skandol
- · Replies 1 ·
Linear Thermal Expansion: Bridge Joints
- Warden619
- · Replies 3 ·
Equilibrium of Forces on a Spring
- alexander_i
- · Replies 3 ·
Calculating Angular Momentum: Mass, Radius, and Frequency Considerations
- jmb07
- · Replies 3 ·
Solving Friction Problem for 30.0 kg Packing Case in a 1500 kg Pickup Truck
- Amar.alchemy
- · Replies 2 ·
How Does a 90-Degree Bend Affect Pressure Drop in Pipes?
- Yogesh Kamble
- · Replies 1 ·
When do I use V=kq/d versus W=qEd for electric potential?
- Procrastinate
- · Replies 1 ·
How Does Friction Affect Oscillations in a Spring-Mass System?
- toastie
- · Replies 16 ·
Calculating BB Gun Muzzle Velocity Using Projectile Motion Equations
- blackboy
- · Replies 4 ·
Work to spin up a CD from rest to 1.26 m/s tangential speed
- jmb07
- · Replies 3 ·
How Much Work Does the Wall Do to Stop a Skater?
- ash4741
- · Replies 7 ·
Are force and volume fundamental units?
- Ki-nana18
- · Replies 3 ·
Projectile Motion Up An Incline Plane
- abhikesbhat
- · Replies 5 ·
Standing waves and maximum intensity?
- kathyt.25
- · Replies 1 ·
Two moving blocks, find small blocks final velocity
- toastie
- · Replies 1 ·
How Much Force Must a Nurse Apply to Overcome Blood Pressure Using a Syringe?
- talaroue
- · Replies 4 ·
Why ice keeps drinks cooler than wood as a coolant
- smillphysics
- · Replies 2 ·
What Is the Coefficient of Kinetic Friction Between the Box and the Dirt?
- brunettegurl
- · Replies 5 ·
Constructive and destructive wave interference
- kathyt.25
- · Replies 3 ·
What is the de Broglie wavelength of an electron accelerated by 75V?
- Brendanphys
- · Replies 2 ·
Can a Hot Wheels Car Travel 42 cm with Initial Kinetic Energy Alone?
- suekz
- · Replies 4 ·
How Do You Calculate Tension in a Pulley System on a Ramp?
- brunettegurl
- · Replies 8 ·
Mechanics quesiton. Skateboarder on ramp.
- milan.007
- · Replies 2 ·
How long to discharge a 60 Ah car battery with all lights on?
- Procrastinate
- · Replies 1 ·
Proving parallel axis theorem for equilateral triangle moment of inertia
- Starwatcher16
- · Replies 2 ·
Applying constant acceleration frame by frame
- CBridgman
- · Replies 2 ·
A Few Questions I Would Like to Endeavour to Ask
- Procrastinate
- · Replies 1 ·
Collision in two dimensions (not heads on)
- salim271
- · Replies 3 ·
What is the required force to lift oneself using movable pulleys?
- xX1SHOt
- · Replies 3 ·
Why the Hand-in-Pocket Trick for High Voltages?
- Jules18
- · Replies 2 ·
How to Calculate the Net Force on a Rectangular Loop by a Straight Wire?
- physics213
- · Replies 1 ·
Find Ice Mass to Make Water Temp 29°C
- Magicarp
- · Replies 5 ·
Solving Force and Velocity: Get Answer in 7.3m/s
- brentwoodbc
- · Replies 5 ·
How Is Work Done by a Spring Calculated?
- brunettegurl
- · Replies 10 ·