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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Finding the linear density of charge on a cylinder
- davidbenari
- · Replies 4 ·
How do you prove the kinematic equation vf² = vi² + 2aΔd?
- killaI9BI
- · Replies 12 ·
Electric Field Between Two Disks
- k8thegr8
- · Replies 3 ·
Intensity of light after passing thru polaroid
- somecelxis
- · Replies 1 ·
Finding an expression for a projectile's horizontal range
- imaturtle123
- · Replies 1 ·
Constructive or destructive interference after a set number of waves?
- kontorstol
- · Replies 2 ·
Inelastic Collision Scenario Question
- IronManTable
- · Replies 2 ·
Train Collision Problem - Calculating Head Start
- egrr10
- · Replies 1 ·
Car motion from position-time graph: reading speed and acceleration
- annm95
- · Replies 5 ·
How Does Gauss' Law Apply to Charged Spheres?
- recomendacion
- · Replies 1 ·
Analytical Approach to Impedance Matching
- ChasW.
- · Replies 2 ·
Nested pendulum with hanging mass oscillating in horizontal SHM
- Dinheiro
- · Replies 6 ·
What Are the Dynamics of a Particle in Vertical Circle Motion?
- rulo1992
- · Replies 27 ·
Pendulum Period on Earth and Mars
- toothpaste666
- · Replies 6 ·
Simple harmonic motion platform
- Thatonetim194
- · Replies 2 ·
Finding a buoyant force on an object
- SevenSeeds5
- · Replies 10 ·
Physics HW kinematics and sig figs
- raho14
- · Replies 4 ·
Is the answer in book wrong? Ones complement conversion
- orangeincup
- · Replies 3 ·
Circular Motion involving a gravitron
- Jimmy87
- · Replies 6 ·
Calculating Particle Position with Constant Acceleration
- Rybka
- · Replies 3 ·
Solving Calories Problem: Lose 6kg in 42 Days
- Korisnik
- · Replies 3 ·
Calculate Horse Power of a Boy Eating Ice
- sylwesh98
- · Replies 4 ·
Relative velocity and conservation of linear momentum
- Lord Anoobis
- · Replies 7 ·
Deriving acceleration r'' from velocity r' using chain rule
- yugeci
- · Replies 1 ·
A vector F=Fz, where z is unit vector, expressed in sphereical coord.
- renegade05
- · Replies 8 ·
Work and power for a square thermodynamic cycle
- Effect
- · Replies 2 ·
3 bulbs at different brightness
- emmfranklin
- · Replies 4 ·
Classical Mech - Newtons 2nd. Quad Air Resistance
- MPKU
- · Replies 3 ·
How Much Torque is Needed to Lift a 1000 lb Load with a Power Screw?
- orangeincup
- · Replies 13 ·
Possibly incorrect professor statement
- RMZ
- · Replies 5 ·
Calculate N for Thermo Lab Vacuum at 293K
- kopinator
- · Replies 5 ·
What is its average speed during this 37 s interval? Answer in units o
- yoitsemmy
- · Replies 2 ·
Create a car to pick up a ballon, travel a distance, and pop it
- jet55
- · Replies 11 ·
Dynamic vs kinetic vs static in physics
- shushi_boi
- · Replies 3 ·
Finding resultant magnitude and resultant vector
- EverT23
- · Replies 8 ·
How Do You Calculate the Average Velocity and Magnitude in a Squirrel's Path?
- cwheats
- · Replies 5 ·
Absolute Uncertainty of a Negative Power
- Redfire66
- · Replies 2 ·
Calculating Electric Force of a Point Charge on a Charged Particle Thread
- ex81
- · Replies 9 ·
Electric Potential and Second Charge
- carpelumen
- · Replies 2 ·
What is the Height of Mercury in an Inclined Torricellian Tube?
- Rugile
- · Replies 3 ·
Solving for the Velocity and Height in a Difficult Kinematics Problem
- cwheats
- · Replies 1 ·
Will a trebuchet or catapult throw farther?
- joemost
- · Replies 1 ·
Density of Earth's atmosphere w.r.t height
- blintaro
- · Replies 10 ·
Density and r.m.s of an ideal gas
- Apothem
- · Replies 3 ·
Calculating Time Difference of Longitudinal Waves in Steel Pipe
- Karol
- · Replies 18 ·
What is the Change in Potential Energy of a Displaced Meter Scale?
- sylwesh98
- · Replies 5 ·
Path diffrence to produce destructive intefrence
- somecelxis
- · Replies 12 ·
Finding minimum period for a physical pendulum disk by optimizing angular frequency
- PhysicsKid0123
- · Replies 6 ·
How long does it take for Tc-99m to reach a nearby hospital for a bone scan?
- melissaaa
- · Replies 3 ·
Length, time and velocity in relativity (special?)
- weirdobomb
- · Replies 3 ·
Current through resistor parallel to two different batteries
- Ellie
- · Replies 3 ·
How can angular frequency be eliminated in solving a challenging SHM problem?
- PhysicsKid0123
- · Replies 7 ·
Magnitude of electric field 32m from a rod
- Les talons
- · Replies 2 ·
Relative Velocity Airplane Problem
- lexie47
- · Replies 14 ·
Physics Question pertaining to Velocity and Gravity
- jasonmoon
- · Replies 1 ·
Dropping Keys to find the floor you're on
- B3NR4Y
- · Replies 13 ·
What Value Should Charge C Have to Nullify the Net Force on Charge B?
- Rectifier
- · Replies 8 ·
Average Speed between two cities
- Chiffy
- · Replies 1 ·
Precession angle for orbit r(φ)=r₀/(1−ε cos(βφ)) and cyclic condition
- alejandrito29
- · Replies 1 ·
Maximum Sliding Distance in a Rotating Cone - Solving for r
- Alettix
- · Replies 9 ·
What Are the Correct Steps to Determine the Thevenin Equivalent Circuit?
- orangeincup
- · Replies 8 ·
Finding two point charges from force and sum
- Rastamonstah
- · Replies 7 ·
Why does a pressure drop in a pipe cause a force on the pipe?
- sevn
- · Replies 1 ·
Fluid mechanics -- fluid in a container moving down an incline
- TheTank
- · Replies 8 ·
Mechanics in cartesian coordinates
- Ascendant78
- · Replies 3 ·
Vector product and vector product angles
- Bassa
- · Replies 4 ·
Charge distribution in concentric shells
- Feodalherren
- · Replies 6 ·
Can I use BTU for work in conservation of energy with imperial units?
- mattwkeller
- · Replies 2 ·
Calculating Magnification with lens, an object, and a screen.
- jmacmartin
- · Replies 1 ·
Why use the parallelogram rule instead of a right triangle for force components
- Slartibartfest
- · Replies 3 ·
Velocity and Acceleration Equational Problem ( making sense)
- zippeh
- · Replies 3 ·
Circuits - Node analysis of connected and dependent sources
- Rectifier
- · Replies 1 ·
Does the Permeability of Water Prevent Surface Disturbance in Aquariums?
- Kaustubh sri
- · Replies 10 ·
Electric field at origin from quarter-circle arc of charge
- Tapehead2
- · Replies 19 ·
Classical Mechanics - Moving Object in 3D space
- TanGeriN
- · Replies 2 ·
Car coming to a stop kinematics problem
- B3NR4Y
- · Replies 6 ·
Solve for mass using a graph of a collision
- B3NR4Y
- · Replies 1 ·
How can I understand the motion of a particle on a cycloid trajectory?
- fayled
- · Replies 7 ·
Electric field strength from two charges
- pstir2
- · Replies 1 ·
At how many rpms will a blade tip break the sound barrier
- natux
- · Replies 5 ·
One Dimensional motion of particle in a potential field
- sabanboy
- · Replies 3 ·
How to find wavelenght of a 3m spring with 2,5 Hz?
- kontorstol
- · Replies 13 ·
Electrostatic forces and distance when considering changes in potentia
- Hereformore
- · Replies 1 ·
Equilibrium Statistical Physics, Plischke ex. 1.2
- percolator
- · Replies 2 ·
Why is there an upward force on a partially immersed liquid cylinder?
- happysmiles36
- · Replies 5 ·
Object floating on water with oil poured in
- happysmiles36
- · Replies 13 ·
Direction of oscillation of wave
- somecelxis
- · Replies 1 ·
Why doesn't the inside of a conducting cup transfer charge?
- mattwkeller
- · Replies 13 ·
Sig Fig: Calculate (.82+.042)(4.4*10^3) - 3800
- cuj93
- · Replies 8 ·
How Do You Apply the Mesh-Current Method Correctly in Circuit Analysis?
- orangeincup
- · Replies 1 ·
A shell is fired vertically upwards
- DriggyBoy
- · Replies 5 ·
Beers Law and Colorimetry Problems
- Blockmeister
- · Replies 7 ·
Minimizing F2 in a 2D force resultant problem with three unknowns
- Ockham
- · Replies 11 ·
Some funny theoretical tasks, classical physics
- (N)amber
- · Replies 3 ·
Equivalent resistance with a short circuit
- sun18
- · Replies 2 ·
Why does water offers less friction?
- Kaustubh sri
- · Replies 20 ·
Projectile motion submarine missle problem
- narutoish
- · Replies 13 ·
How to Convert Units to Solve Collision Force Problems?
- leandro_fl
- · Replies 1 ·
Finding velocity and acceleration of a point on a decelerating wheel
- lukatwo
- · Replies 3 ·