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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How to Calculate Torque and Tension in a Diving Board System?
- fp252
- · Replies 5 ·
Block slides from rest from the top of a fixed frictionless sphere
- leyyee
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Mechanics/Dynamics, rorational acceleration
- craigman
- · Replies 3 ·
How Do You Calculate Angular Acceleration and Revolutions of a Stopping Wheel?
- badula
- · Replies 1 ·
How Fast Must an Inclined Plane Accelerate for a Block to Slide Down?
- jromega3
- · Replies 1 ·
Block being pushed along the floor (dynamics problem)
- mjolnir80
- · Replies 1 ·
Overcoming Friction in of a sliding box
- Fins_Wish
- · Replies 1 ·
Solve F=ma Pulley Problem: Mass of Sand & Acceleration
- crimsonn
- · Replies 1 ·
Velocity and height of an arrow
- the whizz
- · Replies 2 ·
General Conservation of Momentum Problem
- pinkerpikachu
- · Replies 1 ·
What Do the Units Seconds/Degrees Squared Represent in a Pendulum Lab?
- Dynamite
- · Replies 4 ·
Potential Energy Function Given E sub-t
- JWDavid
- · Replies 2 ·
What Determines the Average Kinetic Energy of Ideal Gas Molecules?
- Linzy
- · Replies 1 ·
Rotational dynamics of two cars
- zoner7
- · Replies 1 ·
Conceptual Center of Mass acceleration problem
- bocobuff
- · Replies 12 ·
Conservation of energy for connected blocks
- the whizz
- · Replies 1 ·
Ranking internal energy of H2 gas with different molecule counts
- Linzy
- · Replies 3 ·
Deriving Equation #3: (b/2)θ=L(2θ)
- Brit412
- · Replies 3 ·
How does the radial current density affect the area element dA in Ampere's Law?
- StephenDoty
- · Replies 1 ·
How Do You Calculate the Coefficient of Kinetic Friction on a Ramp?
- crcowboyfan
- · Replies 4 ·
Rotational Motion of a thin rod
- Bones
- · Replies 10 ·
The Doppler Effect on railroad tracks
- mistymoon_38
- · Replies 2 ·
Ideal Gas- molecules applying pressure
- latitude
- · Replies 4 ·
Which radius (r or R) should you use? Why?
- shimizua
- · Replies 1 ·
Spring compression and velocity with conservation of energy
- the whizz
- · Replies 11 ·
Distance from Satellite to Earth Question
- Sevenheartz
- · Replies 4 ·
How to conect 7447 in circuit board to make 7-seg desplay workin
- dubai boy
- · Replies 4 ·
Elastic collisions in a nuclear reactor
- map7s
- · Replies 2 ·
Finding angle of swinging pendulum
- the whizz
- · Replies 2 ·
What are the Work and Energy Relationships in a Spring System?
- blakester
- · Replies 5 ·
Gravitational force on a mass inside a uniform sphere
- ganondorf29
- · Replies 2 ·
How Many Revolutions Does a Slowing Ceiling Fan Make?
- cbrown7
- · Replies 1 ·
Finding coefficient of kinetic friction on a 30° ramp
- daliberataaa!
- · Replies 4 ·
What is the total force on a semicircular wire in a uniform magnetic field?
- bakin
- · Replies 3 ·
Pressure in a Rectangular Tank
- uno
- · Replies 2 ·
Normal force in circular motion, is my work correct
- fishingspree2
- · Replies 1 ·
How Can Torque and Tension Prevent Building Collapse?
- asleight
- · Replies 8 ·
Finding the tension in a string
- hansel13
- · Replies 2 ·
Block compresses spring, find coefficient of kinetic friction
- Nick-
- · Replies 1 ·
Centripetal Acceleration of North Pole
- lacar213
- · Replies 4 ·
Why do larger gas molecules move slower at the same temperature?
- Linzy
- · Replies 1 ·
Strength of magnetic field from a current filled wire at a point
- sbielby413
- · Replies 6 ·
Finding the Spring Constant of a ball
- ckrup
- · Replies 3 ·
How much heat (calories) is required to raise the temperature
- Linzy
- · Replies 1 ·
Calculate Min Angle to Exert 35.0 NM Torque with 355 N Force
- lacar213
- · Replies 3 ·
Rocket fuel consumption too easy?
- shutoutsteve
- · Replies 2 ·
Inclined plane + Inclined force. Normal reaction force = ?
- 1337pHysiX
- · Replies 3 ·
Collisions in Two Dimensions (Perfectly Elastic)
- calvert11
- · Replies 4 ·
Calculating the Distance and Velocity of a Thrown Object Using Kinematics
- crimsonn
- · Replies 3 ·
Thermal expansion in heat engine
- skittlebrew
- · Replies 1 ·
How Do You Calculate Heat Loss from a Box and Heated Gas?
- nuby
- · Replies 1 ·
Relationship between ground state energy of hydrogen and helium
- sheri1987
- · Replies 1 ·
Magnetic fields (multiple choice)
- Foxhound101
- · Replies 2 ·
Unwinding Spool vs. Standard Block
- ssturb
- · Replies 3 ·
How do you calculate the net torque in a friction torque problem?
- Bones
- · Replies 2 ·
Calculate Density of Solid Object Floating in Water
- omgitsmonica
- · Replies 2 ·
Finding spatial separation between simultaneous events using Lorentz transformations
- fzksfun
- · Replies 2 ·
How do period and amplitude change when a pendulum moves from Earth to the Moon?
- SciencePF
- · Replies 6 ·
Inelastic collision and Kinetic Energy Conservation
- stonnn
- · Replies 2 ·
What fraction of the engine power is being used for the place to fly
- cantgetno
- · Replies 5 ·
How do I calculate maximum spring compression using the work-energy theorem?
- cantgetno
- · Replies 2 ·
Impulse delivered to pendulum bob by passing bullet
- Kudo Shinichi
- · Replies 2 ·
At 10 m/s, how high is this second hill?
- deanine3
- · Replies 3 ·
Optics-Diffraction of Thin Hair
- sheri1987
- · Replies 3 ·
Deriving relative velocity equation from conservation laws
- caligyrl4lyfe
- · Replies 1 ·
Finding total resistance in a multi-branch circuit with six resistors
- Mopar426Hemi
- · Replies 1 ·
Quick ? about gravitational torque
- bocobuff
- · Replies 1 ·
Total Kinetic Energy: Solving 72 kg Person Running at 12 km/h
- mdewdude
- · Replies 1 ·
Concave Mirror Image Magnification Calculation
- Kris1120
- · Replies 3 ·
QUICK torque and static equilibrium
- rawrdrena
- · Replies 1 ·
Rotational Inertia of a combination around a fixed axis
- bocobuff
- · Replies 11 ·
Judy jumping from a 20m balcony to a swimming pool
- deanine3
- · Replies 17 ·
Calculating lifetime of a moving pion
- crh
- · Replies 1 ·
Solving Rocket Launch at 75 Degrees After 11.2s
- HomerPepsi
- · Replies 1 ·
Force in an elevator during acceleration
- Strikersn
- · Replies 2 ·
Spring gun problem can't find start
- JWDavid
- · Replies 4 ·
Does 'a factor of 3 above' mean multiplication by 3 or by 4?
- iacephysics
- · Replies 3 ·
Diverging Spherical Lens Proof
- emperrotta
- · Replies 1 ·
How Do You Calculate Initial Velocity of a Baseball Hit at an Angle?
- imlame11
- · Replies 1 ·
Max Photo Current Calculation Using Platinum's Work Function
- xago
- · Replies 1 ·
Time needed for a transverse wave to propagate on a string
- spaghed87
- · Replies 3 ·
Reactance and Inductance of an inductor
- Kathi201
- · Replies 1 ·
Find the Coefficient of Friction Given Frequency
- CoffexCream
- · Replies 2 ·
Finding Instantaneous Acceleration/Velocity
- chaunceytoben
- · Replies 5 ·
Average force on a 16g bullet accelerated to 1010m/s using work-energy theorem
- blayman5
- · Replies 7 ·
How to Calculate FM in a Walking Person Using a Cane?
- TJDF
- · Replies 1 ·
Mercury atoms in ground and excited states at 1600K
- vincisonfire
- · Replies 2 ·
Finding velocity after mass sticks to disk with spring
- asi123
- · Replies 4 ·
Pendulum, conservation of energy theorem
- fishingspree2
- · Replies 3 ·
How Do You Create a Scale Drawing of a Hot Air Balloon with Mints as Passengers?
- Ineedhelp101
- · Replies 1 ·
Sphere thrown downward 12 m/s falling 36m: getting 1.04s instead of 1.75s
- crimsonn
- · Replies 6 ·
Finding the coefficent of static friction
- pinkerpikachu
- · Replies 4 ·
Sir Lancelot Equilibrium Bridge Problem
- Dillio
- · Replies 1 ·
Deriving absolute error equation
- AcecA
- · Replies 2 ·
Ideal circuit with 4 resistances and one emf.
- Mike88
- · Replies 2 ·
How Much Energy Is Needed to Launch a Satellite into Orbit?
- Effective
- · Replies 1 ·
Solving for The Relative Motion of a Boat: Angle & Speed
- omerr
- · Replies 1 ·
Pressure, Density, and Atmospheric Pressure
- kallisti
- · Replies 1 ·
Maximum force to keep two stacked blocks moving together
- Elclon
- · Replies 3 ·