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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What physical direction is "horizontally to the north"?
- lilspicytaco
- · Replies 1 ·
Maximum Angle of a Simple Pendulum with Given Parameters
- Carrie
- · Replies 3 ·
Upthrust vs Weight: Object Immersion in Fluids
- MBBphys
- · Replies 2 ·
Minimum magnitude resolvable by a spectrograph
- Pure Narcotic
- · Replies 2 ·
Initial velocity of milk flowing from hole 10cm below carton top
- vetgirl1990
- · Replies 9 ·
How Does a Circular Hoop's Oscillation Period Change When Displaced by a Breeze?
- Safinaz
- · Replies 1 ·
Finding the resultant of coplanar forces problem
- Theodore Hodson
- · Replies 7 ·
Kirchoff's Voltage Law with Capacitor
- Haven Barnes
- · Replies 8 ·
What Is the Speed of an Electron With 100000 eV Kinetic Energy?
- RubinLicht
- · Replies 2 ·
Potential difference from +4.0 μC and -4.0 μC point charges
- qlzlahs
- · Replies 5 ·
How do temperature differences affect the work done in an ideal Carnot process?
- Pouyan
- · Replies 1 ·
Calculating Amplitude and Velocity of Mechanical Waves in Non-Uniform Wire
- struggles
- · Replies 5 ·
Difference between centre of mass and centre of gravity
- MBBphys
- · Replies 4 ·
Transistor / Photodiode Circuit Switch Analysis
- Jamessamuel
- · Replies 6 ·
What Is the Error in Counting Rate Per Second for Gamma Photons?
- phoenix95
- · Replies 4 ·
Finding the rock's theoretical maximum height.
- Matthew117
- · Replies 4 ·
Net force on driver at lowest point of vertical circular path
- Muath Mushtaha
- · Replies 9 ·
What factors affect monochromator bandwidth?
- oskarbjo
- · Replies 5 ·
What is the Potential Difference Between c and d in This Circuit?
- gracy
- · Replies 108 ·
Finding when a particle stops with variable force from F-t graph
- REVIANNA
- · Replies 14 ·
Maximum spring constant for crate on ramp with friction
- Charlotte Myall
- · Replies 23 ·
Tangential Speed and Acceleration
- TamoYamo
- · Replies 6 ·
Finding angular acceleration of pulley attached to a mass
- vetgirl1990
- · Replies 7 ·
Change In Internal Energy Of An Ideal Gas
- Searay330
- · Replies 14 ·
Block on an incline and frictional force
- Carrie
- · Replies 9 ·
Gauss's Law problem involving a Cylinder
- Potatochip911
- · Replies 4 ·
Name of total energy of a system
- RubinLicht
- · Replies 1 ·
Total kinetic energy for rolling hoop
- vetgirl1990
- · Replies 2 ·
Why Will an Object Not Move Without Friction?
- MBBphys
- · Replies 3 ·
Time to Fall 120m: Solving an SUVAT Problem with a Thrown Weight
- Rumplestiltskin
- · Replies 5 ·
Velocity Calculation of Kicked Rugby Ball
- Rumplestiltskin
- · Replies 5 ·
How to convert KE into potential gravitational energy?
- Byron Anderson
- · Replies 10 ·
Equation of Continuity - Flow rate through an artery
- Kate L
- · Replies 2 ·
How Much Force to Slide a Crate with Friction?
- kid
- · Replies 10 ·
What Is the Rate of Energy Transfer for a 0.050T EM Wave?
- lloyd21
- · Replies 5 ·
Calculating Charge at the Center of a Spherical Shell has me stumped
- Physicsman69
- · Replies 8 ·
Power associated with net force
- REVIANNA
- · Replies 3 ·
Block on incline with friction: why does friction reverse direction for minimum force?
- dlacombe13
- · Replies 2 ·
Conservation of Energy in a Pulley System
- StinkLog
- · Replies 2 ·
Is the biggest phase difference pi?
- MBBphys
- · Replies 3 ·
Platinium Resistance Thermometer
- peachtree40
- · Replies 1 ·
How Does Rain Affect the Momentum and Speed of a Moving Cart?
- brinstar
- · Replies 20 ·
OPERA experiment - Special Relativity
- Isaac Pepper
- · Replies 15 ·
Astronaut throwing a Wrench in space problem again
- jmattsen
- · Replies 3 ·
Equation of motion of magnetic dipole chain
- throneoo
- · Replies 9 ·
What is the volume of the wood immersed in the water-filled flask?
- Callie
- · Replies 2 ·
How to Calculate the Speed of a Spud Gun Bullet?
- Mirzet99
- · Replies 5 ·
What rate does the lift accelerates in the first 5 sec?
- henrco
- · Replies 8 ·
Statistical mechanics - N distinguishable particles
- fuselage
- · Replies 7 ·
Applying the parallel axis theorem to find inertia
- vetgirl1990
- · Replies 5 ·
Wave speed and wavelength of a standing wave on a slinky
- CMATT
- · Replies 5 ·
Equivalent capacitance, circular arrangement
- gracy
- · Replies 61 ·
Spring Force and kinetic energy
- CMATT
- · Replies 10 ·
Beads on a thread - What stops the acceleration?
- Alettix
- · Replies 40 ·
Special Relativity - time dilation and length contraction
- Isaac Pepper
- · Replies 3 ·
How Do You Calculate the Magnitude of a Charge in a Magnetic Field?
- DavidLift
- · Replies 2 ·
Derivation of induced charge on a dielectric
- Titan97
- · Replies 1 ·
Work done pushing a 50 kg box at 30° with friction
- PurelyPhysical
- · Replies 26 ·
Directions of Friction Force (Pipe)
- Lisciu
- · Replies 22 ·
Intensity of laser beam burning tissue over 4 seconds
- CMATT
- · Replies 4 ·
How Does Energy Impact Bridge Oscillation Amplitudes?
- CMATT
- · Replies 1 ·
Capacitor problem from Irodov (3.122)
- Titan97
- · Replies 2 ·
Rutherford's Experient proved the nucleus is dense
- LotusTK
- · Replies 11 ·
Parallel Plates, Capacitor and Dielectrics
- XYTRIX
- · Replies 3 ·
Setting up the differential equations on a moving slope.
- bence
- · Replies 1 ·
A plank that rests on top of two identical cylinders.
- Warlic
- · Replies 3 ·
How Do You Calculate Initial Velocities for Projectiles?
- Oceanspire
- · Replies 5 ·
Finding second moment of inertia about x axis
- werson tan
- · Replies 4 ·
Heat loss from bottle cooling in river water
- Vrbic
- · Replies 6 ·
Basic Kinematics problem, why my method is invalid
- Yousufshad
- · Replies 2 ·
Impulse = ∫Force(t)dt = m∫dv = Δmv via u-substitution?
- Ocata
- · Replies 5 ·
Why is normal force 392.4 cos 25° and not 392.4/cos 25°?
- dlacombe13
- · Replies 1 ·
Accelerometer readings on nested rotating platforms
- The Don
- · Replies 6 ·
Finding B, M, and H for an infinite conducting slab
- phys-student
- · Replies 1 ·
Find velocity and acceleration using derivatives
- carlotta5b
- · Replies 2 ·
Impossibility of unforced movement on a frictionless surface
- richardL
- · Replies 1 ·
What is the RMS magnetic field of light
- lloyd21
- · Replies 15 ·
Work Done by Spring on a Body Sliding down a rod
- Simon Goster
- · Replies 5 ·
Voltage drop between two points
- terryds
- · Replies 1 ·
Finding equivalent capacitance between points A and B
- gracy
- · Replies 25 ·
Is it possible to use L= r x p to find angular momentum here
- Warlic
- · Replies 3 ·
Current carrying bar in a magnetic field
- BOAS
- · Replies 1 ·
What is the Stability of Nanoparticles?
- Billowz
- · Replies 3 ·
Finding Tension in a Transverse Wave on a String
- manyo2013
- · Replies 1 ·
Finding tension in fourth strand of spider web with three known forces
- Heres2hoping
- · Replies 16 ·
Finding bullet impact location on sword using angular momentum conservation
- korbus
- · Replies 1 ·
Does a closer satellite have lower total energy?
- Yatin
- · Replies 3 ·
What is the Charge on a Capacitor with Given Area and Plate Separation?
- gracy
- · Replies 104 ·
Maximum force pulling a wheel without it slipping
- WinterGrascph
- · Replies 2 ·
Why use center of mass moment of inertia in torque equation for rolling sphere
- jcruise322
- · Replies 15 ·
Finding Time and Velocity for a Motorcycle Accelerating at 1.6m/s^2
- werson tan
- · Replies 2 ·
Attempting to understand relativity and time dilation
- Prierin
- · Replies 6 ·
Conservation of Energy vs Conservation of Momentum problem
- TheDemx27
- · Replies 4 ·
What Is the Minimum Angle to Keep the Boxes Stationary on an Inclined Plane?
- whitejac
- · Replies 2 ·
Collision of two rolling bodies
- Arka420
- · Replies 3 ·
What is the flaw in my logic for solving this Newton's 2nd law problem?
- David112234
- · Replies 6 ·
Change in pressure when merging tubes
- Gerald Funk
- · Replies 5 ·
What is the relationship between tangential and radial acceleration?
- De_Dre01
- · Replies 1 ·
Find distance traveled given electric field + vf and vi
- Shaif
- · Replies 5 ·
Two Toilet Papers dropping-Rotational Inertia
- CentrifugalKing
- · Replies 11 ·