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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Bullet hits wood block, slides, hits ideal spring: cons. of energy/momentum
- strangeeyes
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2 cylinders with rope wrapped around them
- Karol
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Neutron colliding with an atom
- zorro
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How to find the direction of a 2-dimensional vector without a prefix?
- -Dragoon-
- · Replies 7 ·
How do I find the coefficient of friction?
- SpecialOps0
- · Replies 9 ·
I cant find the Average Force exerted, help please?
- Aenion
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Inelastic collision kinetic energy lost?
- girl52
- · Replies 3 ·
Understanding SHM and Finding k in a Vertical Spring Lab
- TN17
- · Replies 5 ·
Impulse momentum theory, a ball strikes a wall dunno if i got it right?
- girl52
- · Replies 5 ·
How to Calculate Work Done Using Potential Difference?
- JoulesVolts
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The efficiency of a vehicle engine
- heavenjai2007
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How Do I Calculate the Spring Constant from a Linear Equation?
- shootyoup
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Collimating light from diffraction grating
- $id
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Understanding Work and Energy Transfer in Adiabatic Systems
- nobahar
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Photoelectric Effect: Will Photoelectrons be Emitted?
- zebra1707
- · Replies 5 ·
Air pressure inside a hurricane
- BeiW
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Motion of a rocket after all the fuel is exhausted?
- Eunjung
- · Replies 9 ·
How Do You Calculate Orbital Dynamics for a Satellite Around Planet X?
- thelightsare
- · Replies 9 ·
Finding the Spring Constant in a Vertical Mass-Spring System
- TN17
- · Replies 1 ·
Electric circuit, remove a bulb
- GatorPower
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Confusion about circular motion
- sachin123
- · Replies 12 ·
What is the mean speed of hydrogen atoms at 50K?
- Grand
- · Replies 9 ·
Solve Potential Difference: V for 45J & 15C
- JoulesVolts
- · Replies 4 ·
Connections between String theory and Relativity.
- aaku516
- · Replies 1 ·
Gravitational and circular motion
- physicsgirl12
- · Replies 2 ·
Uniform plank problem: Center of gravity, equilibrium, and torque
- pintsize131
- · Replies 6 ·
Emission current from hot cathode in an X-ray sourse
- proudtobeaj
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How Do Accelerations and Tensions Relate in a Dual Pulley System?
- AdkinsJr
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Do we need to have two objects two have momentum?
- suwarna07
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How can I draw free diagram mass on the wall mass
- vrdm
- · Replies 7 ·
Heat Capacity: Units, Mols & Avogadro's Constant
- jimmy42
- · Replies 2 ·
Resolvant Power of a Dİffraction Grating
- sigmaro
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Two Point Source Interference pattern
- John H
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Force of Gravity of Al on Mt. Everest
- thelightsare
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Static frictions and moving boxes on top of a box
- okgo
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How does temperature affect the average velocity of particles in a gas?
- Runaway
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What is the mathematical expression for the index of refraction in a GRIN lens?
- fluidistic
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What power is needed to lift the water to the surface?
- UNknown 2010
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Drawing a free body diagram for vectors
- shayaan_musta
- · Replies 4 ·
Maximizing the distance of a projectile
- IDumb
- · Replies 5 ·
How much work is done on the mass by the tension
- UNknown 2010
- · Replies 1 ·
Inelastic collision & friction
- Hawraa
- · Replies 4 ·
Solve Friction Problem: Find Acceleration of M | N1/N2 Normal Forces
- sachin123
- · Replies 8 ·
Ionisation/Excitation caused by electron collisions
- physics369
- · Replies 1 ·
Applications of force between parallel current-carrying conductors
- Dream.girl7
- · Replies 7 ·
Help with conservation of Mechanical Energy
- austin1250
- · Replies 5 ·
Newton's third law with thrown objects in space
- bunchie
- · Replies 1 ·
What Torque is Needed to Accelerate a Flywheel to 400 rev/min in 8 Seconds?
- kk727
- · Replies 2 ·
Calculating Distance Traveled from Acceleration and Velocity Relation
- gnarly
- · Replies 2 ·
Calculating Wavelength of Sound Using Tuning Fork and Submerged Pipe
- Hellohi
- · Replies 2 ·
Solving Rotor Ride Physics for a Monkey: Velocity, Friction, and More
- runningirl
- · Replies 13 ·
DB(decibals) and sound Intensity
- Hellohi
- · Replies 8 ·
Understanding Work and Energy Transfer in Everyday Examples
- Peter G.
- · Replies 2 ·
Calculating Young's Modulus for CopperWhat is the Young's Modulus for copper?
- pmh118
- · Replies 10 ·
Problem with relationship of mass and radius with time in centripetal force
- 805906000
- · Replies 6 ·
Calculating Distance in Galilean Transformations
- aaku516
- · Replies 1 ·
Calculating Acceleration of Car with Constant Power
- physics517
- · Replies 5 ·
Particle in electromagnetic field
- mystmyst
- · Replies 10 ·
Ball twirling on string attached to stick
- Melchoire
- · Replies 11 ·
How High Was Marian's Balcony When the Flowerpot Fell?
- -Dragoon-
- · Replies 8 ·
Miscellaneous Geometrical Optics Questions
- zorro
- · Replies 4 ·
Circuit Resistance: Find Total Resisitance with Cells Connected in Series
- aurao2003
- · Replies 4 ·
Why Do My Calculations for Tension Differ from Expected Results?
- loba333
- · Replies 5 ·
Thermodynamics imaginary heat machine?
- shahar weiss
- · Replies 9 ·
Spring system inside an accelerating box
- physics517
- · Replies 5 ·
How far does a bubble in a glass of beer travel in its first and last second?
- Bogus_Roads
- · Replies 24 ·
Confusion regarding interactions and its relation to the strong/weak force
- physics369
- · Replies 12 ·
How Can Two Power Supplies Be Used to Solve Issues in Thomsons e/m Experiment?
- Howlin
- · Replies 7 ·
Pulleys + Convex Mirror Reflection
- zorro
- · Replies 9 ·
Understanding Centripetal Force in a Rubber Ball and String Lab
- pisces93
- · Replies 1 ·
Electrical Charges and Attraction
- csfyp.mail
- · Replies 4 ·
Difficulty in learning physics
- thushanthan
- · Replies 4 ·
Radius divided or multiplied by refractive index?
- Mr. Floyd
- · Replies 2 ·
Upcoming Physics Olympiad Test
- physics517
- · Replies 3 ·
Momentum-an egg dropped on the ground vs. grass
- girl52
- · Replies 7 ·
Pulley Free Body Diagram and rope tension
- armoredhalo00
- · Replies 5 ·
RLC circuit inductor/capacitor combined voltage?
- ike2010
- · Replies 8 ·
How far did Andrew travel before stopping and did he hit the fox?
- -Dragoon-
- · Replies 8 ·
Plano-Convex lens cut in two halves
- zorro
- · Replies 6 ·
Calculating Drift Velocity in Pure Silicon: Need Help
- becon
- · Replies 1 ·
How to draw a position-time graph from a velocity-time graph?
- -Dragoon-
- · Replies 7 ·
Moment of Inertia Homework: Grapefruit & Metal Ring
- badaboom
- · Replies 3 ·
F=ma Physics Olympiad Exam question 19: Constant power
- jerrylinew
- · Replies 4 ·
The mass flow rate in a heat exchnager
- JB1234
- · Replies 5 ·
How to Simplify and Find Power in a Circuit?
- Paymemoney
- · Replies 4 ·
What is the Distance Between Two Photons in Different Reference Frames?
- noblegas
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Uncovering the Logic Behind the Center of Mass Formula
- madah12
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Calculating Gas Particle Effusion Rate Through Two Holes
- Grand
- · Replies 1 ·
Static and Kinetic Friction: Find Force & Acceleration
- phever
- · Replies 1 ·
Gauge Pressure of Tires - find car mass
- BeiW
- · Replies 4 ·
Conservation of Bayron number, Lepton number and strangeness
- Yael
- · Replies 2 ·
Thermodynamics - closed system
- shahar weiss
- · Replies 12 ·
Physics Olympiad 2010 practice test question # 23
- NewtonGalileo
- · Replies 8 ·
How Do You Calculate Average Acceleration in a Piston Cycle?
- Palladian1881
- · Replies 2 ·
Kinetic energy during energy levels
- aurao2003
- · Replies 2 ·
Number of Wavelengths Emitted from Excited Atomic Hydrogen Level 4
- aurao2003
- · Replies 5 ·
Colour change due to refraction
- zorro
- · Replies 13 ·
Does Room Temperature Affect Air Energy While Maintaining Constant Pressure?
- Grand
- · Replies 7 ·
Solving Beams with Triangular Loads - Why the Third Point?”
- remi_c
- · Replies 1 ·
What is the Equivalent Resistance for this Homework Statement?
- rahulc
- · Replies 1 ·