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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Reducing Resistance: True/False Answers
- BMWPower06
- · Replies 2 ·
Static and kinetic friction equations on an inclined plane
- rash219
- · Replies 3 ·
What Will Be the Water Temperature in a Plastic Cup in a 42°C Shaker?
- thpave
- · Replies 1 ·
Moments of Inertia object problem
- Momentum09
- · Replies 3 ·
Newtons equation for gravitational force
- louveargente
- · Replies 9 ·
Net Electrostatic Force on Electron in Charged Insulator
- kiwikahuna
- · Replies 1 ·
Question involving voltage and galvanic batteries
- dungy
- · Replies 2 ·
How to Calculate Golf Ball Range and Height Without Initial Velocity?
- calalily_16
- · Replies 1 ·
Coulomb's Law to find the net force
- kiwikahuna
- · Replies 5 ·
Electric Charge and Potential Energy
- BMWPower06
- · Replies 5 ·
Solving Ski Jumper Physics: How Long is Airborne?
- chopramon
- · Replies 3 ·
Why take the derivative of E = kq/r² for the field on a ring's axis
- Aerosion
- · Replies 7 ·
Center of Gravity: Rod Kicked Quickly - What Happens?
- bsmith2000
- · Replies 4 ·
When is elevator cable tension equal to, greater than, or less than total weight?
- sweet-buds
- · Replies 2 ·
Newton's laws and 3 wooden blocks are pushed across a friction-less floor
- sweet-buds
- · Replies 5 ·
Finding position vector from acceleration with initial conditions
- snoggerT
- · Replies 1 ·
Falling brick speed - equation needed
- [Cat]
- · Replies 2 ·
Finding Electric Fields at Two X-Axis Points
- Aerosion
- · Replies 6 ·
How Does Vertical Force Affect Normal Force on a Block?
- sweet-buds
- · Replies 2 ·
How Much Further Will the Ring Roll Up the Inclined Plane?
- wendo
- · Replies 6 ·
Inertia Tensor of a cylinder at a distance
- pinodk
- · Replies 4 ·
Rotational Motion of a block of mass
- simplygenuine07
- · Replies 3 ·
Vector ramp question - time taken for object to slide down ramp
- avsj
- · Replies 4 ·
Two wave sources with different frequencies reflecting and refracting
- grade11
- · Replies 2 ·
Electron deflected in parallel plate capacitor with given dimensions
- isufuaks
- · Replies 3 ·
Hydrogen energy levels (quantum theory)
- physicshelp1
- · Replies 9 ·
More Uniform Circular Motion problems
- snoggerT
- · Replies 8 ·
Projectile Motion and Relative Motion Principles
- kayleech
- · Replies 1 ·
Cross Product in Uniform Circular Motion
- snoggerT
- · Replies 5 ·
How Is EMF Induced in a Shrinking Square Loop?
- supersunshine
- · Replies 1 ·
Electric Charge Problem: Finding Coordinates for Net Force Equilibrium
- PFStudent
- · Replies 5 ·
How do I calculate charge in these problems?
- chrisych
- · Replies 10 ·
Effects of an electric field on a motion of an electron
- wendo
- · Replies 2 ·
Jayson Seeks Solution to Train & Car Physics Problem
- jaysun_83
- · Replies 10 ·
How far does it move before coming to rest again?
- ladolce
- · Replies 9 ·
Gravitational force between two uniform rods of mass m and length l
- toutou
- · Replies 23 ·
Light Phenomena - shadows within shadows
- plisics
- · Replies 21 ·
Impulse Momentum Theorem for Calculating Fall Height
- ladolce
- · Replies 16 ·
Transformers and Impedance Matching
- mikejones2000
- · Replies 3 ·
Find the magnitude and direction of the sum of momenta
- ladolce
- · Replies 5 ·
Calculating the Speed of a Mass Rising on Two Connected Pulleys
- Mr Virtual
- · Replies 18 ·
Why Do My Calculations for Ship Positions Differ from the Textbook Answers?
- delcypher
- · Replies 4 ·
Spring extension 2s after inelastic collision of two masses
- roovs
- · Replies 4 ·
How do I accurately measure and convert g-force in smaller time intervals?
- matt_uk
- · Replies 4 ·
Missile launch velocity for hitting a moving target
- chaoseverlasting
- · Replies 9 ·
Electron path through parallel plate capacitor
- isufuaks
- · Replies 2 ·
What Is the Coefficient of Kinetic Friction for a Box Pushed at Constant Speed?
- Demonsthenes
- · Replies 2 ·
When is the Mechanical Advantage of a Pulley Greater Than 1?
- Gear300
- · Replies 4 ·
Boyant force on an immersed body, when system is in free fall?
- Mr Virtual
- · Replies 10 ·
Electric point charges on x-axis
- force
- · Replies 7 ·
What is the Net Force on a Pulley System with Unequal Masses?
- rash219
- · Replies 7 ·
Finding the Center of Mass of a Person me Out
- NudeLove66
- · Replies 6 ·
Regarding g forces on Moon and Earth
- rum2563
- · Replies 5 ·
How Does Projectile Motion Determine Where a Snowball Lands?
- heartofaragorn
- · Replies 5 ·
Two Conducting Spheres Problem - Applying
- PFStudent
- · Replies 5 ·
Minimum Speed for Stunt Driver to Safely Jump Over Cars
- heartofaragorn
- · Replies 2 ·
Calculating Equivalent Resistance of Resistor Network
- jesuslovesu
- · Replies 2 ·
Calculate Intersection Point for Shooting Drifting Ship in Video Game
- Rythious
- · Replies 1 ·
Young's double slit experiment question.
- Mr Virtual
- · Replies 4 ·
Direction of acceleration when direction of moving particle changes by 90 degrees?
- Mr Virtual
- · Replies 6 ·
How much distance will a 2kg mass travel at 5m/s with 5N friction?
- nobby
- · Replies 6 ·
How can I accurately calculate the duration of a free fall jump?
- ScienceGeek
- · Replies 4 ·
Centripetal Force Physics Lab Question
- dystorsion
- · Replies 4 ·
Woman's Amazing Fall: Calculating Speed & Acceleration
- Serge76982
- · Replies 11 ·
Calculating Mutual Inductance of Two Rectangular Loops
- kseniya
- · Replies 7 ·
Why does magnetic field strength decrease faster than gravity at a distance?
- Proof.Beh
- · Replies 10 ·
Calculate the instantaneous velocity
- heartofaragorn
- · Replies 5 ·
Forces involved in an elevator
- danielle36
- · Replies 6 ·
Electric field at centre of equilateral triangle with charges +2μC and −4μC
- jg95ae
- · Replies 9 ·
Calculating Time and Velocity in One-Dimensional Kinematics
- ScienceGeek
- · Replies 4 ·
Calculate the angle between the total acceleration
- Momentum09
- · Replies 5 ·
Continuous Flow Calorimeter (SHC)
- Lavace
- · Replies 1 ·
Gauss's law in differential forms
- loom91
- · Replies 19 ·
Is it Possible to Decrease Gas Temperature without Removing Heat?
- mike2007
- · Replies 3 ·
Massive vs. Smaller Satellites: Understanding Orbiting Speeds
- rafterman
- · Replies 2 ·
Determine the speed with which he must throw the ball
- evilphysics
- · Replies 2 ·
What is the net force on a miniature sub hatch at 8.5m depth?
- kiwikahuna
- · Replies 1 ·
How Is Tension Calculated in a Submerged Object's Lifting Cable?
- kiwikahuna
- · Replies 1 ·
Car Collision: Deceleration at 50 or 100 mph?
- iceminion
- · Replies 5 ·
Harmonic Motion - Bungee Jumping
- youngling
- · Replies 1 ·
Bird flying between two trains approaching at 34 km/h each
- zaske.014
- · Replies 1 ·
Lunar lander free fall speed calculation
- Edwardo_Elric
- · Replies 3 ·
How Much Heat To Turn Water To Steam?
- mike2007
- · Replies 6 ·
Surface Water Freezing: Can It Happen?
- mike2007
- · Replies 2 ·
What Is the Bath Temperature When Gold Wire Resistance Increases?
- sharpnova
- · Replies 1 ·
Does a 10-degree change span a greater range in Fahrenheit or Celsius?
- mike2007
- · Replies 10 ·
Conical pendulum speed ratio with different masses and lengths
- Momentum09
- · Replies 3 ·
Calculating Distance and Time for an Object on a Frictionless Inclined Plane
- physicsnewby
- · Replies 13 ·
Calculating Artificial Gravity Rotation Frequency in RPM
- Momentum09
- · Replies 8 ·
Two objects, position-time graph
- heartofaragorn
- · Replies 2 ·
How do I solve for time in seconds?
- rash219
- · Replies 2 ·
Minimum friction force for child on rotating merry-go-round
- Momentum09
- · Replies 2 ·
Conservation of Energy roller coaster car
- kiwikahuna
- · Replies 5 ·
Inelastic collision and spring compression problems
- xyoonboixkpx
- · Replies 6 ·
Simple harmonic motion of a body question
- srj200
- · Replies 4 ·
Emission lines vs blackbody radiation glow
- taoke
- · Replies 1 ·
How Do You Calculate the Correct Vertical Velocity Component of a Projectile?
- physicsnewby
- · Replies 22 ·
How Do You Calculate the Minimum Radius and Bank Angle for a Road Curve on Ice?
- Seiya
- · Replies 9 ·
Why Is My Reasoning Incorrect for the Current in the Resistor?
- natugnaro
- · Replies 2 ·