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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Why does a person's weight appear to increase when they jump on a scale?
- get_physical
- · Replies 1 ·
Can I integrate to find resistance of an object of increasing radius?
- LiamG_G
- · Replies 7 ·
Ideal Diatomic Gas - Final temp and pressure
- Cyclonextreme
- · Replies 2 ·
Thermal Efficiency in an Ideal Diesel cycle.
- MacLaddy
- · Replies 2 ·
Direction of secondary wavefronts from the point sources
- shivam01anand
- · Replies 1 ·
Does m/L = q/2M hold for non-uniform charge distributions?
- shivam01anand
- · Replies 2 ·
Finding solenoid length given winding density and diameter
- yaro99
- · Replies 5 ·
Deriving energy density in a parallel plate capacitor
- Tonythaile
- · Replies 1 ·
Work done shortening string of rotating object
- WestCoast
- · Replies 7 ·
Why Is Joint IH Classified as Tension?
- NoobeAtPhysics
- · Replies 2 ·
Differential Equation for deceleration of a bullet
- Unsilenced
- · Replies 8 ·
What Charge Must a Wooden Sphere Have to Float Above the Earth?
- Numeriprimi
- · Replies 1 ·
Elastic vs. Completely Elastic?
- nx01
- · Replies 2 ·
Conservation of Angular Momentum of merry-go-round
- nx01
- · Replies 2 ·
Two pendulums with different initial conditions
- mot
- · Replies 2 ·
Beat frequency from Doppler effect of laser and receding mirror
- GreenPrint
- · Replies 4 ·
What is the resulting angular frequency of the oscillation?
- jimmyboykun
- · Replies 1 ·
What is the resulting period of the oscillation?
- jimmyboykun
- · Replies 1 ·
What is the resulting frequency of the oscillation?
- jimmyboykun
- · Replies 3 ·
Solving d for Mass Attached to Vertical Spring
- Psyguy22
- · Replies 4 ·
Why Must Constants in Elastic String Equations Be Equal?
- CAF123
- · Replies 9 ·
Gravitational potential energy of 8 masses at cube corners
- roshan2004
- · Replies 5 ·
Work done by a person climbing stairs
- Sen.Lemonsnout
- · Replies 2 ·
Angular velocity when mass is added at center of rotation
- wootman23
- · Replies 5 ·
A guys spinning on a chair has mass dropped on him
- wootman23
- · Replies 5 ·
Pendulums & SHM Homework: True/False Equations
- fogvajarash
- · Replies 7 ·
Electric potential along the x-axis
- chicagobears34
- · Replies 1 ·
Newton's Second Law and Rotation
- whoareyou
- · Replies 5 ·
What Is the Orbital Period of a Satellite at 1000 km Altitude?
- SmallPub
- · Replies 5 ·
Finding the velocity after a collision?
- PhyIsOhSoHard
- · Replies 29 ·
What happens to the power dissipated in a resistor when the voltage ac
- AshyT
- · Replies 2 ·
How to solve the following force/distance/balance problems
- hbk69
- · Replies 18 ·
Is it a scalar product? I'm kind of lost
- Dan350
- · Replies 24 ·
Why do field lines not exist inside a conducting shell?
- abhishek99087
- · Replies 12 ·
Velocity and Acceleration with SMH
- davev
- · Replies 5 ·
Spinning Flywheel in Suitcase: Understanding Torque and Precession
- M.Jenniskens
- · Replies 1 ·
Washer Hanging from Box Moving Down a Ramp
- Gwozdzilla
- · Replies 1 ·
Angular speed when puck mass doubles in collision
- wootman23
- · Replies 3 ·
Finding the magnetic force in square loop wire.
- bfusco
- · Replies 1 ·
How Much Does a Car Rise on a Hydraulic Lift?
- Calculuslover9
- · Replies 4 ·
How Does Pump Irradiance Affect Gain in a Four-Level Laser System?
- GreenPrint
- · Replies 1 ·
Special Relativity - Conservation of Energy/Momentum
- Zatman
- · Replies 7 ·
Why does current through an inductor become negative when a switch opens?
- fredrogers3
- · Replies 1 ·
Rocket thrust with changing mass and fuel burn rate
- hk4491
- · Replies 2 ·
What is the maximum height water can rise in xylem channels due to capillarity?
- caamb
- · Replies 1 ·
Finding reaction force at pin joint A in a suspended truss
- NoobeAtPhysics
- · Replies 10 ·
Why does the cosine law equation change from squared to square root form?
- paolostinz
- · Replies 4 ·
How Do Forces Interact in a Frictionless Hinged V-Beam System?
- djMan
- · Replies 4 ·
Taking small element for integration purpose in SOLID sphere?
- shivam01anand
- · Replies 3 ·
Simulated gravity-satellites in orbit
- kiro484
- · Replies 2 ·
Force on two stacked blocks with friction and acceleration
- anon1
- · Replies 1 ·
Can I use method of sections anywhere?
- NoobeAtPhysics
- · Replies 2 ·
Moment of force on L-shaped bracket about given axis
- NoobeAtPhysics
- · Replies 2 ·
Finding the friction force for a rotating body
- PhyIsOhSoHard
- · Replies 8 ·
Method of sections for truss member force
- NoobeAtPhysics
- · Replies 2 ·
Induced Electric Field Concept Question
- Dgray101
- · Replies 1 ·
What is the direction and explanation of electromagnetic radiation?
- brometheus
- · Replies 9 ·
Time averages of kinetic and potential energy for a simple pendulum
- deedsy
- · Replies 10 ·
Solving for Normal Force in Vertical Circular Motion Problem
- Iser
- · Replies 4 ·
What Is the Acceleration Ratio a1/a3 in a Frictionless Block and Pulley System?
- NoobeAtPhysics
- · Replies 3 ·
Determining compression or tension in truss members quickly
- NoobeAtPhysics
- · Replies 3 ·
How Do You Calculate Error Uncertainty for ln(x)?
- johnnnnyyy
- · Replies 3 ·
Electric field at centre of hole
- Saitama
- · Replies 10 ·
'solved' a question but don't know which one is right.
- Fishingaxe
- · Replies 5 ·
Calculating Electric Forces and Acceleration in a Charged System
- Coco12
- · Replies 6 ·
Work to launch object to high altitude and spring force amplitude
- polarbearkids
- · Replies 4 ·
How Does Energy in an Inductor Change When Disconnected?
- AlphaMaleMatt
- · Replies 6 ·
Circular Motion - Banked Curve
- Iser
- · Replies 3 ·
Air Resistance (Drag Force) and Terminal Velocity
- Apothem
- · Replies 2 ·
Sphere rolling on moving paper with perpendicular velocity
- Saitama
- · Replies 23 ·
What does l represent in the radial Schrodinger equation?
- Dassinia
- · Replies 6 ·
How to Calculate Time and Angular Acceleration of a Slowing Disc
- WestCoast
- · Replies 1 ·
How High Can a Wheelbarrow Go Over a Step Relative to Its Wheel Radius?
- qqchan
- · Replies 21 ·
Kinematics of mass on a semi-circular slide
- oddjobmj
- · Replies 23 ·
Finding quantum numbers for particle in a 3D box
- A$APFowler
- · Replies 1 ·
Compton scattering angle for 0.511 MeV photon at 60° electron recoil
- bobie
- · Replies 23 ·
Carbon-14 amount in an old tree
- dramadeur
- · Replies 9 ·
Percent of kinetic energy transferred in elastic collision between cue and billiard ball
- arizona1379
- · Replies 21 ·
Finding Initial Speed of Second Sled
- jubbly
- · Replies 1 ·
Linear acceleration and rotational motion
- NATURE.M
- · Replies 5 ·
How Does Mass Distribution Affect Rotational Dynamics of a Rod?
- Panphobia
- · Replies 43 ·
Calculating the velocity of the center of mass of a system
- kunparekh18
- · Replies 6 ·
What are the components of the reaction force at A for a truss bridge?
- NoobeAtPhysics
- · Replies 2 ·
Tricky center of mass question
- scoobysnacks
- · Replies 11 ·
Spectral Analysis of Gas Atoms: Temperature Calculation
- Dassinia
- · Replies 2 ·
Separating a hamiltonian into C.O.M and relative hamiltonians
- richyw
- · Replies 3 ·
Equilibrium equation for a frame
- princejan7
- · Replies 2 ·
Finding resultant force from moments about point A
- cracktheegg
- · Replies 11 ·
Oil volume required to rise the piston
- Camille
- · Replies 4 ·
What Is the Role of Point D in a Body Diagram and Moment Equilibrium?
- cracktheegg
- · Replies 5 ·
Understanding Normal Force in a Vertical Spring System
- Leong
- · Replies 8 ·
What is the total kinetic energy of two protons in different reference frames?
- PsychonautQQ
- · Replies 2 ·
Work, Gravity and air resistance question
- UncleJames119
- · Replies 11 ·
Rotational Kinetic Energy: Pole Balanced Vertically
- genevievelily
- · Replies 1 ·
How to select which forces to include in a free body diagram for internal forces
- princejan7
- · Replies 5 ·
Solve L=2 Atom Problem: Find Min (L_x)^2 + (L_y)^2
- PsychonautQQ
- · Replies 1 ·
What is the angular speed in revolution per minute?
- jimmyboykun
- · Replies 3 ·
Bullet shot horizontally at 300 m/s with falling shell casing
- yogoes123
- · Replies 8 ·
How is the resultant force of a distributed load calculated?
- princejan7
- · Replies 3 ·
What Is the Time Period of Oscillation for a Uniformly Stretched Spring?
- quawa99
- · Replies 4 ·