Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Simple Projectile Motion Problem. Unknown initial speed.
- TruthSeaker15
- · Replies 3 ·
Fraction of vapor present in an ideal solution
- zaboda42
- · Replies 4 ·
How to Explain and Diagram a Sound Instrument Project?
- instrumentphy
- · Replies 1 ·
Electric Field Strength Between Two Charges
- rnjscksdyd
- · Replies 11 ·
What is the torque exerted by the malfunctioning thruster on the Jupiter 6?
- Zyrn
- · Replies 2 ·
Locus of all points due to a charge
- tempneff
- · Replies 3 ·
Force Body Diagram - Running: 115 lbs Weight
- jackiemendez
- · Replies 4 ·
This was on my exam. I wasn't sure how to solve it.
- PhysicsKid0123
- · Replies 9 ·
Max Angle of Incline for Box Sliding w/ Friction on Ramps
- lollikey
- · Replies 37 ·
Electric Generators and Faraday's Law
- Violagirl
- · Replies 2 ·
How Do You Calculate the Mass of a Beam in Static Equilibrium?
- tbdm
- · Replies 6 ·
Determining Final Velocity in 2-Dimensional Collision Problem
- dnawiam
- · Replies 4 ·
Rotational Kinematics of two masses
- tbdm
- · Replies 5 ·
Determine the distance between barely resolvable objects
- NasuSama
- · Replies 6 ·
Clay striking a rotating rod: angular momentum and collision
- larkmen
- · Replies 8 ·
Current through an inductor connected directly to a battery
- Nick O
- · Replies 4 ·
A car and a train colliding with each other.
- GreenTea09
- · Replies 1 ·
Angular velocity of a ball+rod falling through 90˚?
- Esoremada
- · Replies 1 ·
Mass m moving at 3v collides with mass 3m moving at v
- bookerdewitt
- · Replies 2 ·
Calculating the Period of Oscillation for a Mass Attached to a Spring
- Panphobia
- · Replies 29 ·
How Does Ohm's Law Apply to Different Electrical Scenarios?
- lemmechill
- · Replies 3 ·
Electricity circuit question, amplitude resistor?
- Michael 37
- · Replies 21 ·
Charge on point charge to create a spark
- chicagobears34
- · Replies 11 ·
Hohmann transfer to Mars: true anomaly and launch timing
- Paul Gray
- · Replies 6 ·
Given force, find the change in kinetic energy
- oneplusone
- · Replies 7 ·
Calculating Nuclear Fusion Energy
- frazzle96
- · Replies 2 ·
Flow through a venturi meter (TEL)
- SherlockOhms
- · Replies 2 ·
Angular displacement of ascending node in Molniya orbit after 100 days
- Paul Gray
- · Replies 7 ·
Power required the support a helicopter
- Doyouevenlift
- · Replies 5 ·
How Far is the Spaceship from the Planet at the Time of Explosion in its Frame
- greendog77
- · Replies 3 ·
Finding oil viscosity from radius, mass, density and terminal velocity
- Panphobia
- · Replies 6 ·
Pulling a submerged car wreck out of the water
- Doyouevenlift
- · Replies 7 ·
Two blocks and a mass- and frictionless pulley
- scomber
- · Replies 8 ·
Calculating Orbital Period of 3 Planets with Similar Mass
- woaini
- · Replies 13 ·
Capacitor Plate Charges After Switch is Closed
- Saitama
- · Replies 21 ·
What is the acceleration and time for a block on an inclined plane?
- rumblef1sh
- · Replies 1 ·
Two systems merging, what is final temp?
- mateomy
- · Replies 1 ·
Finding enthalpy of reaction for NH3 + O2 → NO + H2O
- needingtoknow
- · Replies 15 ·
Two boys colliding on ice: KE loss and angular momentum
- vaxxa
- · Replies 4 ·
Conservation of Energy of a block and spring
- kimlu
- · Replies 3 ·
Calculating the force of friction on an object
- purplecows
- · Replies 3 ·
Torque and Moment of Inertia of a black ring
- Solemony
- · Replies 1 ·
How do I use Bow's notation to solve vector sums with only one force?
- anthonyk2013
- · Replies 13 ·
Find a function of velocity relative to x
- etchzel
- · Replies 2 ·
What Happens to the Bar Magnet When the Switch is Closed?
- outxbreak
- · Replies 3 ·
Bullet Through Pendulum Bob-Inelastic Collision
- DubbTom
- · Replies 6 ·
Find acceleration due to large planar ring
- oddjobmj
- · Replies 7 ·
What is the magnitude of the loop current at t = 1.3s?
- RenD94
- · Replies 2 ·
Force needed to pull ice block across water layer
- physicswork
- · Replies 5 ·
Calculation of work involving unit vectors
- bakakun028
- · Replies 2 ·
Simulated Gravity through centrifugal force concept questions
- AFSteph
- · Replies 5 ·
Elastic collision of atoms with perpendicular final motion
- Dave218
- · Replies 1 ·
How Do You Calculate the Horizontal Force on a Pendulum?
- nx01
- · Replies 10 ·
Solving Momentum with Strings - PhysicsForum
- alingy1
- · Replies 2 ·
Simple friction problem? Maybe not (multiple inclines)
- I'msorry
- · Replies 7 ·
Heat pump extracting energy from cold air at 385 W input
- astru025
- · Replies 3 ·
Quasi-static, adiabatic problem
- mateomy
- · Replies 13 ·
Energy lost when two spinning disks are brought into contact
- daveamal
- · Replies 22 ·
What is the Current Understanding of Monopoles in Physics?
- Abscissas
- · Replies 2 ·
Acceleration due to gravity of rod
- oddjobmj
- · Replies 4 ·
Final Velocity of a Spaceship Approaching Earth from Infinity Due to Gravity
- Luke1121
- · Replies 4 ·
How Do You Calculate the Final Speed of a Sliding Ice Block on an Incline?
- rodrj183
- · Replies 6 ·
Is Work Done by Gravity Equal to Change in Potential Energy?
- hb20007
- · Replies 7 ·
Why does a charge above a conducting plane give negative capacitance?
- bg646
- · Replies 1 ·
Calculation actual efficiency problem
- astru025
- · Replies 5 ·
Centripetal Force and ball of string
- merlin.matt
- · Replies 1 ·
E= 2.377074x1010 J * 380 kgE= 9.038314x1012 J
- hsphysics2
- · Replies 8 ·
Thermal physics - entropy change (latent heat, specific heat etc)
- Flucky
- · Replies 2 ·
Bowling ball goes from sliding to rolling
- MuIotaTau
- · Replies 6 ·
Power Radiation Ratio of Venus and Earth
- rnjscksdyd
- · Replies 2 ·
How Do You Calculate the Kinetic Energy of Particles in Relativistic Decay?
- PsychonautQQ
- · Replies 3 ·
How Do You Find the Sum of Moments at an Angle?
- k31453
- · Replies 5 ·
Work Energy: Find Tension at Bottom of Circle
- hsphysics2
- · Replies 4 ·
Finding Values in a Complex Circuit
- KieranRye
- · Replies 6 ·
2D Vectors - Addition and Subtraction of Successive Displacement Vectors
- bearjew11
- · Replies 20 ·
Rotational Kinetic Energy and Frictionless Surfaces
- econ94
- · Replies 2 ·
Initial acceleration of 0.89 kg steel object pulled at 45° with 21 N tension
- rysezhae
- · Replies 2 ·
Plot g(r) of planet with two distinct density regions
- oddjobmj
- · Replies 10 ·
Solving Q3 of AND and OR Circuits Challenge
- smo2012
- · Replies 9 ·
Number of elastics needed to safely fall
- shadowblades
- · Replies 1 ·
Using Henry's law for dissolved methane in a well
- zaboda42
- · Replies 5 ·
Mass, magnitude, direction of vectors
- jdroidxw
- · Replies 6 ·
Special Relativity kinetic energy
- PsychonautQQ
- · Replies 4 ·
Finding eigenfrequencies for two masses with different m1 and m2
- Valeron21
- · Replies 7 ·
Frictionless horizontal then ramp?
- conniebear14
- · Replies 5 ·
Forced Oscillator with unfamiliar forcing function and constants
- oddjobmj
- · Replies 51 ·
How to approach a vector displacement problem with given formulas
- dreamer_asot
- · Replies 1 ·
What is the Magnetic Field at a Point 10cm from the Center of Two Finite Wires?
- freshcoast
- · Replies 34 ·
What is a Short Link in a Truss (Statics)?
- Meta14
- · Replies 1 ·
Direction of Magnetic Force in Relation to Electron Movement
- STEMucator
- · Replies 8 ·
Physics heat problem Using calories.
- astru025
- · Replies 3 ·
Forces on a Ramp: Understanding Fcosθ - mgsinθ = ma
- frownifdown
- · Replies 1 ·
How Does Electric Putty Conduct Electricity Compared to Metals Like Copper?
- Alaya1
- · Replies 2 ·
Finding the magnitude and direction
- BOAS
- · Replies 4 ·
Finding The Distance Between An Observer and Light Source
- embphysics
- · Replies 14 ·
Proving that a free electron can't fully absorb a photon
- squareroot
- · Replies 6 ·
Solve Dielectric Problem: Parallel Plate Capacitor w/ Wedge Insert
- Avatest
- · Replies 1 ·
Y to Δ transformation of a circuit
- sevag00
- · Replies 8 ·
Circular Motion and Oscillationshave been sick and am lost
- yvette262
- · Replies 1 ·