Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
How Much Power Does a 1500-kg Racecar Need to Reach 90 km/h in 5 Seconds?
- JustinKim
- · Replies 2 ·
Basic kinematics - conceptual questions
- mizulyn
- · Replies 2 ·
Period of an electric dipole rotating in an external electric field
- wimvd
- · Replies 2 ·
Help with physics mechanics and electricity questions
- HELP_786
- · Replies 15 ·
How Does Amplitude Affect Total Distance Traveled in SHM?
- Shiina-kun
- · Replies 1 ·
Rotational Dynamics of a cable car
- GeoKenshin
- · Replies 6 ·
Finding Max Altitude Reached by Rocket with Constant Acceleration
- CubeDude
- · Replies 3 ·
How Do You Calculate Average Body Density Using Archimedes' Principle?
- aarunt1
- · Replies 3 ·
Calculating Charge Ratio in a Uniform Magnetic Field
- thompson.1674
- · Replies 2 ·
Block dropped onto vertical spring oscillating with 10 cm amplitude
- danielle36
- · Replies 3 ·
Initial acceleration of two particles on a rod
- DeviantSOP
- · Replies 5 ·
What Force Does a Rod Experience in a Magnetic Field Setup?
- physicsdawg
- · Replies 7 ·
Lenz's Law Homework: Calculating Induced Current & Magnetic Force
- physicsdawg
- · Replies 12 ·
Finding current across capacitor
- kayak4life87
- · Replies 2 ·
Can You Solve This Circuit Using Kirchhoff's Laws?
- miss.bossyy
- · Replies 1 ·
Why use momentum instead of kinetic energy for elastic collisions
- tambourine
- · Replies 1 ·
How Does a Concave Mirror Affect Image Characteristics?
- cybernerd
- · Replies 5 ·
Monochromatic Light Frequency in Glass (5.20 x 10^2 nm, n=1.50)
- _Ankoku_
- · Replies 1 ·
Calculating Time Constant for Series Inductor and Resistor
- swampland
- · Replies 10 ·
Question on volumes of water, excess mass, potential energy and power
- shiftthatbogi
- · Replies 1 ·
What is the capacitance of a capacitor constructed using foil and paper?
- Number1Ballar
- · Replies 5 ·
Kinetic/potential energy of charges as they approach each other
- brazen2
- · Replies 2 ·
Find the normal force exerted by the floor
- spidey12
- · Replies 7 ·
Rotational Energy of a baseball
- Lance WIlliam
- · Replies 3 ·
Finding coefficient of kinetic friction for a 40 kg crate pushed at constant speed
- zinniagirl
- · Replies 4 ·
Friction and moving blocks on inclines
- WarPhalange
- · Replies 10 ·
Solving x/20 = (3/8) - (4/5) for x
- ramstin
- · Replies 6 ·
Gravitational field, density and mass.
- lostie100
- · Replies 2 ·
Energy stored in the magnetic field of two inductors
- ascii
- · Replies 1 ·
Solving the High Jump Velocity Puzzle
- jazz836062
- · Replies 1 ·
Simple harmonic motion of a car
- danielle36
- · Replies 4 ·
Piston SHM position velocity acceleration at t=0
- kbump
- · Replies 2 ·
What is self-inductance and how does it relate to magnetic flux and current?
- ascii
- · Replies 8 ·
Calculating Velocity from Kinetic Energy: Solving for v in the r=mv/qb Formula
- baylorbelle
- · Replies 4 ·
Calculate the angle of refraction for a substance
- cybernerd
- · Replies 4 ·
How to Determine Angular Deceleration and Initial Speed of a Coasting Saw Blade?
- Lance WIlliam
- · Replies 1 ·
How is Torque Calculated for a Mouse on a Clock Hand?
- Lance WIlliam
- · Replies 16 ·
Angular acceleration of machinery
- Lance WIlliam
- · Replies 2 ·
Accuracy of Current and Voltage Measurements
- mantillab
- · Replies 3 ·
Where does the 1200 come from in thermal physics calculations?
- Confuzzled_VN
- · Replies 1 ·
Finding Angle of Vectors in 2D Space
- lim
- · Replies 5 ·
Friction on an inclined plane (freebody diag. included)
- iheartbeer
- · Replies 2 ·
Calculating the energy level and radius for a helium atom
- ttk3
- · Replies 1 ·
with my question on insolation and power
- shiftthatbogi
- · Replies 13 ·
Calculating Change in Velocity for a Baseball Player's Slide
- Evales
- · Replies 6 ·
Rotational Dynamics, centre of mass.
- fundoo
- · Replies 2 ·
Phase equilibrium in a vessel with unsteady flow
- fizzybiz
- · Replies 1 ·
Slide wire on V-shaped track: EMF, current, and area
- miss.bossyy
- · Replies 1 ·
Why Can't Electrons Flow Directly Within a Battery?
- nothing123
- · Replies 1 ·
Scales stacked together: reading on each?
- tambourine
- · Replies 1 ·
Hooke's Law: inconsistent spring constants what
- tambourine
- · Replies 2 ·
How Do Parallel Resistors and Capacitors Affect RC Circuit Half-Life?
- poweroffive
- · Replies 3 ·
Figuring Velocity from Acceleration
- Matt_B
- · Replies 26 ·
How Do You Calculate Light Refraction Angles Through Quartz?
- myersb05
- · Replies 1 ·
Light Refection and Snell's Law
- myersb05
- · Replies 4 ·
Which Scalar Quantity Cannot Be Less Than Zero?
- tinwhistler
- · Replies 5 ·
Understanding Friction, Motion, and Gravity: How to Solve Physics Problems
- nubnub
- · Replies 3 ·
Linear acceleration and moments of intertia
- yugo2113
- · Replies 1 ·
Understanding Charge Density and Electric Fields
- NBAJam100
- · Replies 19 ·
Destructive Interference of a sheet of mica
- conniechiwa
- · Replies 2 ·
Time-Varying Magnetic Fields Q#2
- BroIIy
- · Replies 5 ·
Electric Ceiling Fan: 0.0988 Rev in 0.208s
- teenholiday
- · Replies 3 ·
Calculating Mass and Tension: Classical Mechanics Problems Solved
- eeeps333
- · Replies 1 ·
Force of friction and Torque problem
- teqvexed
- · Replies 3 ·
How can I find the equilibrium length of the string for a helium-filled balloon?
- physics214
- · Replies 2 ·
Working out the geostationary orbit
- dread
- · Replies 4 ·
Finding resultant of non-concurrent force systems
- bookworms
- · Replies 2 ·
Examine the reaction in which uranium fractures
- Zozozo
- · Replies 2 ·
Does the Thin Lens Formula Apply to Pinhole Cameras?
- cybernerd
- · Replies 1 ·
Finding diffraction grating maxima with 643 nm laser and 637 lines/mm
- cyclonefb3
- · Replies 3 ·
Find the Zero Potential Point on the X-Axis for a System with Two Point Charges
- ziplock2k
- · Replies 3 ·
Do sound waves and light rays interact?
- Niki4444
- · Replies 1 ·
Find Number of First Missing Maximum in Double Slit Diffraction Pattern
- ttk3
- · Replies 1 ·
What is the induced current in a loop due to a time-varying magnetic field?
- BroIIy
- · Replies 4 ·
Calculating Velocity After Inelastic Collision
- ally1h
- · Replies 1 ·
Potential difference between two points for a circuit with two batteries
- medguy1234
- · Replies 11 ·
Field strength to oscillate a dipole at 175 kHz in coaxial capacitor
- seekingaeolus
- · Replies 1 ·
How do I calculate the work done on a box pushed up an inclined plane?
- zoner7
- · Replies 8 ·
Microscope to view sample in focus with a completely relaxed eye
- Niki4444
- · Replies 3 ·
Finding the charge of a capacitor
- Indeed
- · Replies 1 ·
Moment of force problems, can't solve 6 of them
- bookworms
- · Replies 2 ·
Finding shift in centre of gravuty
- fizzyy
- · Replies 7 ·
Calorimetry Problem - Find Specific Heat of Liquid
- Jacob G
- · Replies 1 ·
Is potential difference zero everywhere between two equal charges?
- Takuya925
- · Replies 1 ·
How Old Is the Rock Using Potassium-Argon Dating?
- Number1Ballar
- · Replies 3 ·
How Is Tension Calculated for a Submerged Accelerating Object?
- smilingsteph
- · Replies 1 ·
Need help with General Physics II homework questions
- crispykrispy
- · Replies 3 ·
Calculating Net Force on a Point Charge in a 2D Coulomb's Law System
- cobhc27
- · Replies 2 ·
Finding energy produced in nuclear fusion
- SpikeOut
- · Replies 1 ·
Inelastic Collision and Finding Initial Velocity
- pitaaa
- · Replies 2 ·
Equilibrium and Torque and minimum mass
- tambourine
- · Replies 8 ·
Having hard time understanding Universal gravity Law
- HelloMotto
- · Replies 5 ·
Pressure needed to pump water 1532m up a vertical pipe
- Gear300
- · Replies 5 ·
Force on electron as it travels through conductor
- NATSALANE
- · Replies 9 ·
What defines an algebraic fraction
- ramstin
- · Replies 6 ·
Efficiency of nuclear powerplants
- maithie
- · Replies 6 ·
How Much Does 2.9955623e+05 Tonne Weigh?
- designerdan08
- · Replies 4 ·
How Large Should the Second Tank Be to Achieve the Desired Pressure Increase?
- pavadrin
- · Replies 1 ·
Kinetic energy measurement in a non-normalizable state
- jalobo
- · Replies 1 ·