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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Calculate the density of an object by the amount of displaced mass in water
- sagigever
- · Replies 7 ·
Electrostatic force between a Half Cylinder and a Plate
- Terry Bing
- · Replies 10 ·
Mechanics- Conservation of energy
- AlonZ
- · Replies 11 ·
Banked turn with friction: finding speed and conditions for negligible friction
- RemotePhysics
- · Replies 7 ·
Finding equivalent resistance in a multi-branch circuit
- naftacher
- · Replies 5 ·
How does humidity affect air cooling?
- StoningTree
- · Replies 11 ·
Calculating the energy created by a bike pump that feeds a turbine
- rufusbufus
- · Replies 2 ·
To find the relative velocity of the wind as seen from a car
- gnits
- · Replies 1 ·
Finding angular velocity vector from velocity components
- girlwhoneedsmathhelp
- · Replies 6 ·
Is Gravity the only force doing work on a roller coaster cart?
- gazeem
- · Replies 8 ·
Understanding Feynman's Discussion of the Parallel Axis Theorem
- bryanso
- · Replies 2 ·
Minimum Force of 86N to Move Two Blocks
- bsvh
- · Replies 6 ·
The Brachistochrone Problem: cycloid curve
- physicsbeginnerss
- · Replies 3 ·
An interesting coupled oscillators problem (multiple springs and masses)
- mliempi2018
- · Replies 6 ·
How Far Does Ultrasound Travel in 0.2 Seconds?
- Aaraska_
- · Replies 1 ·
How Do Energy Levels Work for Electrons in a 1D Box?
- tanaygupta2000
- · Replies 30 ·
Calculating Angular Diameter of an Orbit Using Kepler's Law
- Kynsuo
- · Replies 4 ·
Kinematics Question with weird units
- Ashelion
- · Replies 5 ·
Rolling without slipping: direction of rotational velocity
- LCSphysicist
- · Replies 10 ·
How far does a 1 kg object travel with 6 N applied for 4 seconds?
- jcarver23
- · Replies 2 ·
Pulley angular velocity problem
- jeffrey
- · Replies 24 ·
How to calculate the demand of energy necessary to hold an object?
- LCSphysicist
- · Replies 2 ·
Climbing a ladder in an elevator
- KungFu
- · Replies 12 ·
What is the average separation of these molecules?
- seongwei
- · Replies 3 ·
Charge rearrangement on conducting spheres
- FranzDiCoccio
- · Replies 21 ·
Child going down a water slide (potential energy and energy conservation)
- Thea Woods
- · Replies 5 ·
Why does an alpha particle curve less in a magnetic field than a beta?
- flintstones
- · Replies 1 ·
Finding minimum energy for particle in a box with n=1, L=2a
- tanaygupta2000
- · Replies 11 ·
Calculating Forces in a Pulling System: Fp, Wp, Wm
- Thea Woods
- · Replies 1 ·
How do x, y and theta relate when pulling a cylinder?
- LCSphysicist
- · Replies 8 ·
TISE solution for a hydrogen atom
- Kynsuo
- · Replies 22 ·
Verifying Fresnel equations satisfy R+T=1 for s and p polarization
- Athenian
- · Replies 1 ·
Different Temperatures of Ice versus the Refractive Index
- Irremytr
- · Replies 3 ·
Find the period of a pendulum consisting of a disk of mass M
- LCSphysicist
- · Replies 11 ·
Diffraction of Light (Single Slit)
- hairey94
- · Replies 1 ·
Which system of units is coherent for mechanics?
- core1985
- · Replies 1 ·
Struggling to find the equivalent capacitance of this circuit
- naftacher
- · Replies 11 ·
Theory of machines homework problem
- dorteam
- · Replies 2 ·
How can I accurately calculate the quantum number of a pendulum?
- jjson775
- · Replies 17 ·
Solving Sinusoidal Equations with Theta
- mcastillo356
- · Replies 39 ·
Finding plane separation with Bragg's law for multiple orders
- songoku
- · Replies 2 ·
Think of a body which is at rest but not in equilibrium
- SSG-E
- · Replies 40 ·
Partial pressure of oxygen at a certain altitude
- songoku
- · Replies 8 ·
How many molecules will hit the cylinder: Was my solution correct?
- Nirmal Padwal
- · Replies 4 ·
AP Physics C sample question that I think is wrong (dart hitting a box)
- aspodkfpo
- · Replies 11 ·
Finding a Mistake in My Sketch: Can I Get Emergent Beam Perpendicular to AB?
- songoku
- · Replies 5 ·
Collision, angular momentum and energy
- LCSphysicist
- · Replies 21 ·
What was Newton's insight on rotational motion in Principia?
- Klaudia
- · Replies 30 ·
Plotting a Bessel Function for Diffraction (Fraunhofer)
- PhDeezNutz
- · Replies 2 ·
Does Summation Over n from -∞ to +∞ in Quantum Mechanics Equal Ψ(x)?
- knowwhatyoudontknow
- · Replies 1 ·
Correct statement about this motion
- songoku
- · Replies 15 ·
What are the assumptions for solving the charged conducting disk problem?
- hairey94
- · Replies 1 ·
Determine the heat capacity at a constant volume for a Van der Waals gas
- Like Tony Stark
- · Replies 1 ·
Impulse on Rubber and Metal Hammers
- Ballbearing101
- · Replies 62 ·
The relationship between friction and mass
- George2020
- · Replies 10 ·
Solving a Closed System w/Conservative Forces: Is E1=E2 Always True?
- LCSphysicist
- · Replies 3 ·
Average translational kinetic energy given only P and V
- hairey94
- · Replies 1 ·
Rotation of two cylinders inclined at an angle
- PhysicsBoi1908
- · Replies 4 ·
Will the pebble meet with the block according to the given condition?
- Mahfuz_Saim
- · Replies 21 ·
Finding the maximum height of a projectile
- Qube
- · Replies 13 ·
What will be the number of collision per second in a unit area?
- Mahfuz_Saim
- · Replies 12 ·
Trying to find the equation of position in a circular oscillatory motion
- LCSphysicist
- · Replies 11 ·
Tackling a Classical Mechanics Problem at Pisa University
- Pigkappa
- · Replies 4 ·
Using geometry to find refraction angles through multiple media layers
- lpettigrew
- · Replies 6 ·
A block and a disk connected by a rope
- LCSphysicist
- · Replies 5 ·
Increasing electric potential and electric field
- mcastillo356
- · Replies 2 ·
Voltage drops in a series circuit
- rachelmaddiee
- · Replies 3 ·
EMF and magnetic force on a wire moving through a magnetic field
- Nomadyb
- · Replies 2 ·
A disk on a slippy surface (Rotation and Translation)
- srecko97
- · Replies 12 ·
What Is the Stiffness Constant k of the Spring?
- upender singh
- · Replies 26 ·
Mechanical advantage of a moving pulley vs an anchored pulley
- Rolacycle
- · Replies 43 ·
What I do not understand about mass spectrometers
- TheGmc
- · Replies 28 ·
Correct statement about solenoid
- songoku
- · Replies 2 ·
Solving a Damped Movement w/ Mass Spring System: Find K, Acceleration
- alnpoke
- · Replies 1 ·
What is the relationship between surface area and bulk modulus in a collision?
- jkhc23
- · Replies 1 ·
What is the relationship between weight and length in a cord and pulley problem?
- cwill53
- · Replies 16 ·
How the power of the voltage supply can be calculated?
- requied
- · Replies 10 ·
What Is the Correct Equation for Equilibrium Temperature of Two Fluids?
- trying_mybest
- · Replies 7 ·
Mass, luminosity and magnitude of a galaxy
- astroYEEET
- · Replies 21 ·
What is the Differential Equation for Airflow in a Balloon?
- Hansemannchen
- · Replies 5 ·
Calculating the elastic potential energy from a force-extension investigation
- lpettigrew
- · Replies 16 ·
Does a Capacitor Have a Magnetic Field?
- Fabio97
- · Replies 4 ·
Electric field produced by a uniform charge density on a wall
- Jamesdn
- · Replies 6 ·
Rod on a Plane: Calculating Angular and Linear Motion After Impact"
- Nexus99
- · Replies 38 ·
To find the relative velocities of linear and circular motion
- gnits
- · Replies 2 ·
How to apply Newton's second law to a problem
- George2020
- · Replies 3 ·
Understanding Balloon Charges and Interactions
- t3rom
- · Replies 8 ·
Easy problem about two bars connected by a spring
- LCSphysicist
- · Replies 6 ·
Why is the power of a particle on a wave zero in a stationary wave?
- Gourab_chill
- · Replies 20 ·
Adding velocity vectors for two tractors pulling a box
- Dominator007
- · Replies 1 ·
What is the Total Capacitance After a Thread Cleanup?
- JJJAKE
- · Replies 8 ·
Babinet's Principle: Effective Aperture Dipoles (Matlab)
- PhDeezNutz
- · Replies 2 ·
Seat-belt effects on passengers during a crash
- Alfos001
- · Replies 7 ·
Mass spectrometer with a Lead element
- requied
- · Replies 40 ·
Finding currents I1, I2, and I3 using Kirchhoff's laws
- Jamesdn
- · Replies 1 ·
Solving the Melting Ice Problem
- nuky999
- · Replies 14 ·
What is the Electric Field Equation for an Electrified Sphere?
- omar558
- · Replies 2 ·
A 2.00 kg rim with a radius of 20.0 cm is sitting on an 8.00 kg wedge
- Alabaster1327
- · Replies 1 ·
Electric force between two equal parallel rings of charge
- Flaming Physicist
- · Replies 9 ·
Forces acting on a support point after the system is released
- IgorT75
- · Replies 6 ·