Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Projectile motion rifle question
- i_linn
- · Replies 6 ·
Maximum Force for Block Stability with Kinetic Friction
- jun9008
- · Replies 2 ·
Force on a submarine porthole at 500 m depth
- vipertongn
- · Replies 3 ·
Calculate the hieght of the cones by using Solid angle?
- arslion
- · Replies 1 ·
How Does Current Flow in a Charging RC Circuit?
- sArGe99
- · Replies 3 ·
Does a Parallel Resistor Affect Current in a Battery Circuit?
- sArGe99
- · Replies 1 ·
Showing work (Perfectly Elastic Collision)
- madmax2006
- · Replies 2 ·
Magnitude of acceleration with friction
- bolivartech
- · Replies 4 ·
Direction of induced current question
- Learnphysics
- · Replies 1 ·
Physics problem finding tension of a string
- nothingatall
- · Replies 1 ·
Why Does External Resistance Equal Internal Resistance for Maximum Power?
- sArGe99
- · Replies 2 ·
Magnetic force on a charge carrying wire
- thatgirlyouknow
- · Replies 5 ·
How far will a car travel before coming to rest?
- chris783
- · Replies 3 ·
Centripetal Force on Ferris Wheels
- monicaacinom
- · Replies 1 ·
Conservation of energy derived from Newton's Laws?
- n0083
- · Replies 2 ·
Solve Vehicle Collision Problems with Quick Homework Help – No Numeric Answers
- lufbra08
- · Replies 4 ·
Acceleartion of hanging block connected to a sliding block
- emauer
- · Replies 2 ·
Ski Jumper's Initial Velocity - Solve the Problem
- ayerski
- · Replies 1 ·
Comparing ideal gases with Boyle's Law and Avogadro's Law
- darussiaman
- · Replies 1 ·
Determining the energy of an object
- ChemIsHard
- · Replies 1 ·
How many argon atoms did Julius Caesar inhale that you inhale in 1 hour?
- gkglock
- · Replies 7 ·
Maximum banking angle for 10 m/s runner on 30 m turn
- mvs1c
- · Replies 3 ·
Binary star system ratio of force
- Ljungberg92
- · Replies 1 ·
Calculate Travel Time for Plane with Ground Velocity of 796km/h in 100km [N]
- swirly90
- · Replies 2 ·
Calculating How High a Softball Thrown at 17.5m/s Rises
- simpleee
- · Replies 12 ·
Why can't the net force be zero between two charges?
- luap12
- · Replies 4 ·
Magnitue and direction of velocity
- pink1
- · Replies 4 ·
What is the magnitude of the torque exerted on the loop?
- wadini
- · Replies 7 ·
Difficult Projectile Motion Problem
- sakdjki
- · Replies 1 ·
First dark fringe at 45° vs 55°: which slit is widest?
- wilson_chem90
- · Replies 14 ·
Answer: Understanding Multirange Voltmeter Internal Wiring
- parm09
- · Replies 4 ·
Cart colliding with stationary mass, find final velocity and mass
- Fabio233
- · Replies 1 ·
Relativistic mass of electrons at different speeds
- wilson_chem90
- · Replies 6 ·
Two objects moving at a constant velocity. Find direction so they collide.
- FUR10N
- · Replies 11 ·
Finding weight with force and theta
- k2var2002
- · Replies 3 ·
What is the Minimum Coefficient of Friction to Prevent Block Movement?
- Kaxa2000
- · Replies 4 ·
Projectile motion figuring out the variables
- Kaxa2000
- · Replies 6 ·
Calculating Net Force from Acceleration and Distance: A Problem Solving Approach
- pookisantoki
- · Replies 3 ·
How Does Length Contraction Affect Measurements in Special Relativity?
- wilson_chem90
- · Replies 30 ·
Sandbag dropped from balloon - find final velocity
- Chupu
- · Replies 2 ·
Astronaut's pulse measured at 0.90c by Earth observer
- wilson_chem90
- · Replies 11 ·
Can You Determine the Charge to Mass Ratio from Nucleon and Proton Numbers?
- nikelberry
- · Replies 3 ·
How Much Energy Does Falling Water Generate at Niagara Falls?
- Qnslaught
- · Replies 1 ·
Javelin throw, find time it takes for angle one to change to angle two
- pinoypride333
- · Replies 1 ·
Model Rocket Flight: Graphing Acceleration, Velocity, and Height
- you_of_eh
- · Replies 1 ·
Determining Normal Forces for Particle P
- songoku
- · Replies 2 ·
Circular motion related to linear motion
- songoku
- · Replies 2 ·
Where Can I Find Help Understanding Kinematics Equations for Pelican Diving?
- yoyo2112
- · Replies 4 ·
Calculating the Radius of a Rotating Wheel Using Radians and Arc Length
- Unity
- · Replies 2 ·
Entropy change during isothermal contraction of ideal gas
- sskk221
- · Replies 2 ·
Angle of Attack for F-117A at 30,000ft and 400kts: 0.648
- jd3005
- · Replies 1 ·
Rotating steel wire with bead on it
- mrdoe
- · Replies 4 ·
Boxes hanging from pulley system
- brickaney
- · Replies 6 ·
Finding index of refraction for acetone from refraction angles
- kevinf
- · Replies 3 ·
What is the magnitude of each charge in Coulombs according to Coulomb's Law?
- Defcon55
- · Replies 1 ·
How to Find the Kinetic Friction Force and Coefficient?
- SLStudent
- · Replies 3 ·
Capacitor Discharge Time: How Long to Reach 99% Charge?
- fball558
- · Replies 1 ·
How Is Gravitational Force Calculated for a Satellite Near Earth?
- pookisantoki
- · Replies 1 ·
What will the traveler weigh on another planet?
- pookisantoki
- · Replies 5 ·
Change in internal thermal energy.
- bbhill
- · Replies 3 ·
Will the Block Move? Understanding Static and Kinetic Friction
- debbers111
- · Replies 2 ·
Time Dilation/Twin paradox Question
- wilson_chem90
- · Replies 2 ·
Bicycle with time-dependent braking force F = bt
- joemama69
- · Replies 15 ·
Finding unit vector and direction angles when only magnitude is given
- dtrain121
- · Replies 6 ·
Solve 5 Moles Ideal Gas Thermodynamic Work - Final Temp
- Luongo
- · Replies 3 ·
Capacitor charge 195 μs after switch opens in RC circuit
- deerhunt713
- · Replies 4 ·
Finding currents in a 2-source circuit with Kirchoff's rules
- TommyV
- · Replies 2 ·
How Do You Calculate Current in a Circuit with Multiple Resistors and Batteries?
- mattmatt321
- · Replies 2 ·
What is the Mean Distance Between Point Particles in a Volume?
- mrausum
- · Replies 1 ·
Power delivered by a constant force as a function of time
- lilmul123
- · Replies 1 ·
Inferring charge via electric field properties
- phil ess
- · Replies 1 ·
People and earth pull on each other, so why do people fall?
- Taharok
- · Replies 3 ·
How Do Pulleys Affect Work and Energy in Lifting a Load?
- sonutulsiani
- · Replies 18 ·
Hydrogen ground state/excited states due to temperature problem
- emtilt
- · Replies 2 ·
Air Resistance on Fire Helicopter's 625kg Water Bucket
- yj-k91
- · Replies 1 ·
Just tell me what equations to use, or anything.
- osulongboard
- · Replies 2 ·
Why does Kirchhoff's law make bulb d turn off instead of on?
- Chewy0087
- · Replies 3 ·
Momentum, kinematics, and dymanics ?
- songoku
- · Replies 8 ·
Solving for Velocity of Particle in 2D Plane
- PeterFer
- · Replies 2 ·
Orbital speed of satellite orbiting Jupiter
- agadag
- · Replies 8 ·
Finding height using the direction cosines
- janahan
- · Replies 1 ·
Tennis Projectile Motion Question
- Emethyst
- · Replies 1 ·
Where does extra energy come from in superposed waves?
- Chris 197
- · Replies 2 ·
What is the angle between two vector components?
- archa1c
- · Replies 3 ·
How Do You Achieve Equilibrium in a Dual-Radius Pulley System?
- yopy
- · Replies 2 ·
What Push Off Speed is Necessary for Divers to Safely Land 5m from a Cliff?
- cire792
- · Replies 6 ·
Finding launch speed for sled to land on second ramp peak
- joemama69
- · Replies 4 ·
If the average force on an arrow were doubled, how much faster would it leave the bow?
- ethrust2
- · Replies 3 ·
Friction with moving block question
- ethrust2
- · Replies 1 ·
Newton's laws question [grade 12]
- bigmac
- · Replies 1 ·
32Km straigh line to the Earth curve
- sieuhaha
- · Replies 1 ·
Finding time for electron to traverse vertical electric field
- mitch45
- · Replies 1 ·
How Does Refraction Affect Image Location in a Thin Lens Observation?
- guilesar
- · Replies 1 ·
Wave amplitude/energy relationship problem the square of one is one?
- Chris 197
- · Replies 2 ·
Solar Voltaic Cells - converting sunlight to electricity over a given area
- jones2767
- · Replies 8 ·
How Long Until the Second Car Overtakes the First?
- skoomafiend
- · Replies 8 ·
Average Velocity vs. Delta Velocity
- hjapl
- · Replies 3 ·
Baseball thrown horizontally at 86 mi/h drops how far over 18.4 m?
- neutron star
- · Replies 4 ·
Newtons Laws applyied to pulleys
- Little1
- · Replies 1 ·
True / False questions related to Newtonian Mechanics
- Sumbhajee
- · Replies 1 ·