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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Calculating Acceleration of 20 kg Pendulum at Lowest Point
- Thefox14
- · Replies 1 ·
Calculating Distance Using Force, Mass, and Acceleration
- bradosaurus
- · Replies 4 ·
Rotational Equilibrium (Finding tension)
- Pinkchika88
- · Replies 1 ·
What Determines the Critical Angle in a Glass-to-Liquid Interface?
- sgoeke
- · Replies 1 ·
How Do You Convert MeV/cm^3 to Rads?
- ~Sam~
- · Replies 1 ·
How to Calculate Heat Loss Per Hour Through a Glass Window Pane?
- preluderacer
- · Replies 3 ·
The force of a Hurricane on a person
- kudoushinichi88
- · Replies 1 ·
Why Does the Electron Stay at the Same Speed in a Series Circuit?
- DrnBrn
- · Replies 1 ·
What is the formula for calculating distance from acceleration data?
- parmeet
- · Replies 1 ·
Finding pressure at narrow end of segment
- sona1177
- · Replies 4 ·
Free body diagrams for springs and dampers in torsion
- t_n_p
- · Replies 1 ·
Time required to reach to Speed of Roller table for a bar
- Kaustubh
- · Replies 3 ·
Time for water to drain from bottle at various volumes
- srsthsr
- · Replies 22 ·
Friction on a pivot. Graph of motion w/ c.angular accel.
- asz304
- · Replies 1 ·
How Do You Rank Normal Force in This Physics Problem?
- madah12
- · Replies 1 ·
Disk moment of inertia example.
- tysonk
- · Replies 2 ·
Finding tension and friction force in a pulley system
- madah12
- · Replies 3 ·
How can understanding free fall be useful for activities like skydiving?
- wordsand
- · Replies 6 ·
Calculate the Current, Lost Volt and P.d across parallel resistors?
- looi76
- · Replies 4 ·
Work done by force on a non-linear track.
- Anza Power
- · Replies 4 ·
Frictional Torque for Static Equilibrium of a Pulley
- BraedenP
- · Replies 10 ·
Girl on a swing, stands up and becomes stationary?
- kudoushinichi88
- · Replies 5 ·
Static equilibrium of diving board
- barz1
- · Replies 1 ·
How Does Sunlight Intensity Translate to Force on Earth?
- sgoeke
- · Replies 3 ·
Initial Acceleration of Wood in Water
- sona1177
- · Replies 6 ·
What are the equations for calculating work and energy in a physics problem?
- Slnj325
- · Replies 10 ·
What are the steps for reducing sound intensity by 20 decibels?
- ongobongo
- · Replies 5 ·
What are the tension forces in a suspended mass system?
- pbele21
- · Replies 2 ·
Jackson p244,Green function for wave equation
- NinjaSlayer
- · Replies 2 ·
Find the ratio of the total kinetic energy after the collision
- emerica1254
- · Replies 7 ·
Horizontal force from hinge on inclined beam with cable support
- jcfor3ver
- · Replies 1 ·
Two questions on rotation/angular kinematics
- killazys
- · Replies 5 ·
Equations of motion for angular acceleration
- jono90one
- · Replies 1 ·
Resultant vector of an isosceles triangle?
- atypical
- · Replies 3 ·
Moment of inertia of meter stick about off-center axis
- jcfor3ver
- · Replies 7 ·
Finding Time in Projectile Motion
- fcb
- · Replies 9 ·
Vibrating aluminium string
- kudoushinichi88
- · Replies 3 ·
How Much Energy Does a 3.5 mW He-Ne Laser Beam Carry Over 1 Meter?
- sgoeke
- · Replies 1 ·
What Is the Maximum Electric Field from a 100W Light Bulb at 1 Meter?
- sgoeke
- · Replies 1 ·
A bat and an insect Doppler's Effect problem.
- kudoushinichi88
- · Replies 12 ·
Finding the mass ratio in a 2-particle elastic collision
- I Like Pi
- · Replies 3 ·
Charge and electric field between two metal plates with 10 V potential difference
- Chewy247
- · Replies 9 ·
Conservation of Angular Momentum of ballerina
- Nontrad
- · Replies 1 ·
What is enthalpy and how does it relate to thermal and potential energy?
- arkabas
- · Replies 6 ·
Solving projectile motion with equations of motion only
- david_19
- · Replies 2 ·
What is the Speed and Maximum Height of a Pendulum Bob in Motion?
- kissafilipino
- · Replies 3 ·
How Does the Method of Images Determine Potential Inside a Grounded Sphere?
- crimsonidol
- · Replies 3 ·
Radiation Pressure causing acceleration
- jmm5872
- · Replies 2 ·
How many electrons are missing on the suspended oil drop?
- homevolend
- · Replies 1 ·
Calculate density of Oxygen at STP
- EroAlchemist
- · Replies 3 ·
Significant digits and easy average speed/ velocity questions
- Pruzhinkin
- · Replies 5 ·
Why Must Lens Separation Be Considered in Multiple Lens Systems?
- iurod
- · Replies 3 ·
Solving Weight of 12 kg Crate Sliding on 35° Platform
- Nodoubt101
- · Replies 1 ·
How to Find Coefficient of Friction on Sandpaper Using Applied Force and Mass?
- Havenater23
- · Replies 4 ·
Calculating Object Distance for Magnified Real and Virtual Images
- iurod
- · Replies 7 ·
What is the Gravitational Force Between the Moon and a 50-kg Student?
- STrain
- · Replies 5 ·
Calculating Number of Electrons for Positive Charge of 1X10-6
- homevolend
- · Replies 1 ·
How to find the normal force given the center of gravity and the radius
- Pinkchika88
- · Replies 1 ·
Solving 6kg Cat on Wagon Mass Problem
- I Like Pi
- · Replies 2 ·
Calculating energy loss as a ball rolls down a ramp
- Vee9
- · Replies 7 ·
Period of a spy satellite one Earth radius above the surface
- No2
- · Replies 2 ·
Rocket attatched to a spring problem
- mjolnir80
- · Replies 9 ·
Inelastic and elastic collision of two masses in a frictionless bowl
- DMRika
- · Replies 1 ·
Linear Momentum, Impulse, Center of a Mass, Velocity, Kinetic Energy
- DMRika
- · Replies 1 ·
What Causes Some Galaxies to Release Superluminal Jets?
- appplejack
- · Replies 1 ·
Measuring Pressure on a Mechanical Leg
- Aleci
- · Replies 1 ·
Calc Volume and Temp of gas with changing conditions
- EroAlchemist
- · Replies 1 ·
Are these solutions for waves correct?
- yeah:)
- · Replies 25 ·
What is the Work Done by Air Resistance on a Round Trip?
- emerica1254
- · Replies 4 ·
Charged Particle at rest in a Solenoid (conceptual question)
- TheSoftAttack
- · Replies 1 ·
What is the apparent magnitude of the binary system?
- PaulWright
- · Replies 9 ·
What was the velocity of the Honda
- tica86
- · Replies 5 ·
Car Braking (On Inclined Slope)
- ariarch
- · Replies 13 ·
Angular Velocity of 10 N m Applied Disk - 2 Revolutions
- tica86
- · Replies 3 ·
What is the equation for calculating acceleration due to gravity on an asteroid?
- hovno1
- · Replies 4 ·
Impossible Roller Coaster question (for me anyway)
- scolaiw
- · Replies 9 ·
How Does Train A's Maximum Power Influence Its Equation of Motion?
- grusini
- · Replies 1 ·
Maximum photon frequency from 9.0 eV electron collision
- aurao2003
- · Replies 2 ·
Frequency and wavelength on different instruments and loudness
- xllx
- · Replies 2 ·
How Does Removing Pigs Affect the Decibel Level in a Pig Pen?
- MASM
- · Replies 2 ·
Finding a Mass of a Block on an Atwood's Machine
- guss
- · Replies 5 ·
Understanding Entropy: Drawing Temperature Entropy Graphs
- Delzac
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Rank Kinetic Energy Pendulum Problem: A-E-I < B-F < D-H < C-G
- sona1177
- · Replies 3 ·
Ampere's Law with an open cylindrical shell
- gsquare567
- · Replies 1 ·
Compression of monatomic ideal gas
- zygisyyy
- · Replies 8 ·
Diffraction due to a narrorw slit
- titan81
- · Replies 1 ·
Electric Potential at a Distance
- xxabr
- · Replies 5 ·
Does magnetic flux change if the area is extended past the B field?
- gsquare567
- · Replies 1 ·
Why Does Sound Behave Differently in Various Gases and Media?
- McKeavey
- · Replies 1 ·
Rectangular Vectors From angle and magnitude
- steakbbq
- · Replies 1 ·
Efficient Energy Calculations for a Ball Down a Ramp
- TN17
- · Replies 3 ·
Find Rest Mass of Composite Particle After Collision
- Joules6626
- · Replies 5 ·
Rotational Momentum and linear acceleration
- blackheart
- · Replies 1 ·
Center of mass problem involving shell
- mmattson07
- · Replies 7 ·
Binary-star system, gravity + centripetal force question?
- basenne
- · Replies 1 ·
Fluids (finding the vel of air in a plane)
- pkpiotr517
- · Replies 2 ·
Car with acceleration 5t² and box on vertical frictionless plane
- Homophome
- · Replies 8 ·
Special Relativity Ship Problem
- harrietstowe
- · Replies 3 ·
Ideal spring with 1kg mass: max acceleration and extension
- pb23me
- · Replies 53 ·
Does Constant Acceleration Always Change Velocity's Magnitude?
- mohabitar
- · Replies 7 ·