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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As you move away from a lightsource
- grantP
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How is charge transmitted between two metal plates separated by air?
- slakedlime
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Calculating Force of Gravity on an Alien Frog
- get_rekd
- · Replies 4 ·
Will Adding Ice to Soda Change the Final Temperature?
- BuBbLeS01
- · Replies 19 ·
What is the Tension in a String During Rotational Motion?
- todd.debacker
- · Replies 3 ·
Easy one here yet, i can't get it
- sicphysics
- · Replies 4 ·
Finding the charge on a conducting sphere using Gauss's law
- AFG34
- · Replies 17 ·
How Does Jumping on and off a Sled Affect Kinetic Energy and Speed?
- logglypop
- · Replies 7 ·
Finding an angle in a right triangle with three known sides
- dominus96
- · Replies 8 ·
Electromagnetism Problem, electric charge per unit volume.
- Spoony
- · Replies 1 ·
Solve 3-Force Member: Weight W=50N on Disk
- dontdisturbmycircles
- · Replies 1 ·
Force on electron in parallel-plate electric field and trajectory equation
- magicuniverse
- · Replies 1 ·
Really Quick Work Done Q (I've tried)
- JohnJay
- · Replies 1 ·
Angular momentum and eccentricities question?
- magicuniverse
- · Replies 1 ·
Diffraction around semicircular obstacles at 444Hz
- DimSum
- · Replies 3 ·
Maximize Car Speed on Banked Track: Frictional Force Problem Solution
- magicuniverse
- · Replies 3 ·
Throwing a Pebble:Measuring Velocity and Acceleration
- chrhssupermanwl
- · Replies 1 ·
Finding unknown mass with tension
- x__o
- · Replies 1 ·
Centripetal acceleration in a revolving restaurant
- lettertwelve
- · Replies 6 ·
Calculating Final Velocity and Distance for a Block on an Inclined Plane
- urnotkewldude
- · Replies 3 ·
Adiabatic Process Homework: 2 moles of CO Gas
- mit_hacker
- · Replies 1 ·
How Does Velocity Descent Impact Spray Drying Processes?
- davidgruty
- · Replies 1 ·
Thermal properties of matter caluculation
- exotic rooftile
- · Replies 1 ·
Calculate Impulse from Baseball Bat Strike - 20 kgm/s
- logglypop
- · Replies 1 ·
Finding initial x and y velocity from a projectile motion graph
- Bensky
- · Replies 11 ·
Relative velocity and interception of two swimmers
- Spoony
- · Replies 9 ·
Print ViewInduced EMF and Current in a Shrinking Loop
- CoasterGT
- · Replies 2 ·
Torque and Rotational Kinematics
- zbobet2012
- · Replies 2 ·
Time for first and second revolutions with constant angular acceleration
- saturn67
- · Replies 34 ·
Calculate the force that each wire exerts on each other
- tasha_michelle
- · Replies 4 ·
Calculating Energy Stored in Series and Parallel Capacitor Circuits
- boogiebear
- · Replies 3 ·
Finding speed and direction of puck B after elastic collision
- Jtappan
- · Replies 4 ·
Friction force between two stacked blocks on horizontal surface
- Siracuse
- · Replies 4 ·
Ball thrown horizontally from building roof
- Infamous_01
- · Replies 4 ·
What Temperature Allows a Ring to Slide Off a Sphere?
- bpw91284
- · Replies 6 ·
Bullet passing through suspended wood block
- innightmare
- · Replies 5 ·
Conservation of Energy by a Rolling Sphere
- lapo3399
- · Replies 2 ·
Rotational Equilibrium and Rotational Dynamics problem
- BBallman_08
- · Replies 1 ·
Find the speed of the bullet as it emerges from the block
- innightmare
- · Replies 1 ·
Electromagnetism: Calculating Force on q0 in a Square
- magicuniverse
- · Replies 4 ·
How Much Would You Weigh on a Neutron Star?
- MissKaylaPaige
- · Replies 1 ·
0 = t(7.8 x 10² m/s - 4.9 m/s² t)
- viet_jon
- · Replies 19 ·
Solve Curved Track Problem: Find Times & Stop Position
- naphiefx
- · Replies 3 ·
A challenger at highschool physics
- sicphysics
- · Replies 10 ·
Understanding Friction in Force and Motion: A Free Body Diagram Approach
- Seraph404
- · Replies 2 ·
Finding orbital speed of a satellite around Jupiter
- alex7298
- · Replies 4 ·
What is the Magnitude of the Magnetic Field for a Proton Beam?
- EvanQ
- · Replies 11 ·
Potential of a Charged Cylinder
- aliaze1
- · Replies 2 ·
Force needed to hold down a hydrogen balloon with volume 2.0×10⁶ m³
- rachelina
- · Replies 2 ·
Calculating Angular Velocity of Rock Swinging in a Circle
- TonkaQD4
- · Replies 2 ·
Resultant velocity from easterly and northerly components
- rhxoehwhfh
- · Replies 8 ·
Find mass of uniform solid disk?
- saturn67
- · Replies 2 ·
How do I convert angular speed to revolution
- innightmare
- · Replies 4 ·
Calculate the magnitude in Newtons of the normal force
- anap40
- · Replies 6 ·
What is the average air resistance for a person?
- Br0kenS0cial
- · Replies 8 ·
Rotational Kinematics of a Computer Disk
- Superfluous
- · Replies 2 ·
Momentum change when truck turns from north to east
- dominus96
- · Replies 20 ·
What is the solution to this free fall gravity question?
- grantP
- · Replies 7 ·
How Much Kinetic Energy Does a Saturn V Rocket Reach at 11.2 km/s?
- physicsbhelp
- · Replies 8 ·
Calculating Power for Escalator in Dept Store
- pooface
- · Replies 3 ·
Simple (was thought to be) Gravity Question
- grantP
- · Replies 5 ·
Elliptical Orbits Unfortunately.
- Nghi
- · Replies 4 ·
How to Calculate Average Resultant Force?
- jack1234
- · Replies 3 ·
Pivoting Stick Angular Acceleration and Force Calculation
- anap40
- · Replies 3 ·
Can Mechanical Energy Be Conserved?
- jack1234
- · Replies 9 ·
So what is the force in Newtons?
- navya
- · Replies 1 ·
Take the Dynamic Quiz: Physics JPG Image
- djmorfia
- · Replies 1 ·
Determine the velocity of the plane relative to ground
- navya
- · Replies 1 ·
Conservation of momentum (with conservation of energy)
- S[e^x]=f(u)^n
- · Replies 1 ·
How to Determine the Initial Velocity for Simultaneous Impact?
- Joza
- · Replies 10 ·
Work Done by Air Resistance on rain drops
- grouchy
- · Replies 2 ·
Dynamics problems with forces and motion
- djmorfia
- · Replies 1 ·
What Is the Minimum Speed an Arrow Must Have to Pass Through a Spinning Wheel?
- chaotixmonjuish
- · Replies 4 ·
Physics of forces and acceleration on a water slide
- johnhaley
- · Replies 1 ·
How Does Comet Speed Change at Aphelion Compared to Perihelion?
- lakersgrl786
- · Replies 1 ·
Volume of circle (x-10)² + y² = 36 rotated about y-axis
- relskid
- · Replies 1 ·
Solving for the Speed of a Comet in an Elliptical Orbit
- ccsmarty
- · Replies 4 ·
Calculating Vibration Frequency of 1100 kg Car with 68 kg Driver
- LostTexan07
- · Replies 5 ·
Equilibrium Levels of Mercury and Water
- LostInScience
- · Replies 1 ·
Solving Blood Pressure Difference with Constricted Artery
- LostInScience
- · Replies 1 ·
2 balls dropped from a building
- ronny45
- · Replies 1 ·
Elastic potential energy of a spring problem
- jack1234
- · Replies 16 ·
Impulse momentum and morequestion
- atavistic
- · Replies 1 ·
How Do You Calculate the Radius of a Pipe in Fluid Mechanics?
- maos
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How Do You Calculate the Rotation Speed and Stability of a Heavy Cylinder?
- Fowler_NottinghamUni
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Work done with free body released
- jack1234
- · Replies 3 ·
What Is the Minimum Height for a Cart to Safely Negotiate a Loop-the-Loop?
- gknowels
- · Replies 2 ·
Calculating Work on an Incline: Using Cosine of Theta for 30 Degrees
- jcksn34
- · Replies 2 ·
How long for a solar panel to heat 110L of water from 15°C to 65°C?
- marclee85
- · Replies 3 ·
Finding acceleration and tensions in Atwood machine with rotating pulley
- dtesselstrom
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Ball thrown from moving train at 60 degrees rises how high
- Cowtipper
- · Replies 1 ·
Word done by (non)conservative force
- jack1234
- · Replies 3 ·
Factors that determine direction an object will move after an elastic collision?
- pebbles
- · Replies 1 ·
Physics Grade 12 Q's: Impulse & Momentum
- andrei.suba
- · Replies 1 ·
Where is the constriction on an airplane wing for Bernoulli's principle?
- HelloMotto
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Forces, action and reaction pairs
- mkwok
- · Replies 6 ·
Why is the answer to gravitational potential energy question C?
- jack1234
- · Replies 3 ·
What is the Relationship Between Work Done on Eggs and Their Stopping Points?
- jack1234
- · Replies 7 ·
The tension in the line between A and B
- mariachy
- · Replies 4 ·
Work by Gravity / Conservative Forces
- Jamieee
- · Replies 2 ·