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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Coefficient of friction for the block to be in equlibrium
- kishlaysingh04
- · Replies 3 ·
Work Done by a Constant Force (Q6 page 188 of Cutnell and Johnson)
- gcombina
- · Replies 12 ·
Understanding Dipole-Loop Interactions in Electrodynamics
- colloio
- · Replies 10 ·
Overall Force Acting on a Submerged Cube (in water)
- FaraDazed
- · Replies 11 ·
Kinetic Energy of bullet fired from gun
- lolbob07
- · Replies 10 ·
A person walks to the top of the hill
- lolbob07
- · Replies 10 ·
Calculating Angle and Distance of Separation for Repelling Charged Spheres
- madonset@eskom
- · Replies 2 ·
Calculating Torque for Lever with Weight
- choudhari.mayu
- · Replies 1 ·
Liquifying Nitrogen: How Much Heat Energy?
- says
- · Replies 2 ·
Gold leaf area and fiber length from mass and density
- JudyyNunez
- · Replies 3 ·
Which is correct: r1 and r2 should have different signs or be the same?
- somecelxis
- · Replies 1 ·
On a basic level why can't monopoles exist?
- needingtoknow
- · Replies 2 ·
Boat aiming angle to hit target across river with current
- KurtWagner
- · Replies 2 ·
Relative Velocity - Canoe vs. River
- killaI9BI
- · Replies 13 ·
Calculating Nuclear Cross Section for Materials
- Apollo14LMP
- · Replies 7 ·
Moving Charges and Magnetism Problem
- anraphy
- · Replies 6 ·
At what height must a roller coaster start to stop at the top of a loop?
- rbn251
- · Replies 21 ·
Systematic and random errors in photoelectric effect experiment
- chialer96
- · Replies 4 ·
Two Spring System Homework: Find Distance & Max Velocity
- CAF123
- · Replies 14 ·
How does a dielectric increase maximum electric field strength?
- needingtoknow
- · Replies 1 ·
What Force Is Needed to Hold a Cut Charged Sphere Together?
- Dinheiro
- · Replies 3 ·
Change in Electric potential, potential energy, and work problem.
- hongiddong
- · Replies 2 ·
Calorimetry quantifying sources of error
- slaw155
- · Replies 1 ·
Electric field inside at points on a conductive box
- Caiti
- · Replies 2 ·
Thunderstorm Discharge modeled as Electric Dipole
- Nyfinscyf
- · Replies 5 ·
Formula of refraction at spherical surface
- desmond iking
- · Replies 9 ·
Why does I(t) = 0.5√2 cos(10⁴πt) for a 0.5 A rms 5 kHz current?
- AmagicalFishy
- · Replies 2 ·
Challenging problem involving special relativity
- Kyle.Nemeth
- · Replies 1 ·
What is the angle of repose and how does it apply to objects on inclined planes?
- Sagar98
- · Replies 6 ·
Angular momentum free particle problem
- rtsswmdktbmhw
- · Replies 2 ·
How Do You Calculate the Instantaneous Linear Speed of a T-Shaped Pendulum?
- myko
- · Replies 5 ·
Radius of curvature of partially cut glass surface
- desmond iking
- · Replies 3 ·
Induced current and torque in a rectangular metal loop
- tw12
- · Replies 1 ·
The Pressure at the Bottom of a Container
- mlb2358
- · Replies 3 ·
How does a capacitor charge if there's a gap between the plates?
- needingtoknow
- · Replies 13 ·
Deriving work-kinetic energy theorem for rotational motion
- gimak
- · Replies 6 ·
Maximum velocity of a spider at rest on a banked truck
- stateofdogma
- · Replies 6 ·
Lennard-Jones Potential: Derive an expression for equilibrium constant
- Flucky
- · Replies 1 ·
Fission or Fussion on Lead to release energy?
- Phycisists
- · Replies 5 ·
Ray Tracing and Combination of Lenses
- alingy1
- · Replies 4 ·
Focal length of converging meniscus lens filled with a liquid
- Edge Of Pain
- · Replies 9 ·
Refraction at spherical surface
- desmond iking
- · Replies 2 ·
Three properties that all numerical answers must have
- travis51
- · Replies 2 ·
How to find the initial velocity of a projectile, knowing only these?
- charlotteyip
- · Replies 6 ·
Dropping Marbles in Different viscous liquids
- bbq2014
- · Replies 8 ·
Geometrical optics- position of image
- desmond iking
- · Replies 13 ·
Bernoulli's equation misunderstanding
- hongiddong
- · Replies 6 ·
Why is ice freeze-dried under vacuum and with IR heat?
- Himanshu_6174
- · Replies 1 ·
Find the period of the space shuttle in alternate universe
- hanburger
- · Replies 1 ·
Net Torque Calculation for a Square with Equal Forces Acting on Opposite Sides
- blintaro
- · Replies 5 ·
Rotating rod - potential difference between the ends
- Rugile
- · Replies 10 ·
Projectile motion - bullet shot from a rifle
- pst535
- · Replies 3 ·
Ray-Tracing vs. Depending on Formulas
- alingy1
- · Replies 4 ·
Can Graphite Be Used as a Vibration Sensor?
- Jayden
- · Replies 7 ·
Why does weight on a tilted surface use sin for the parallel component?
- fightboy
- · Replies 2 ·
What will happen if the middle bulb burns out?
- needingtoknow
- · Replies 1 ·
Why formula for internal resistance for charging battery v = e + Ir
- needingtoknow
- · Replies 3 ·
How do i find the current in this circuit?
- max1020
- · Replies 3 ·
Entropy change of melting ice cube initially at -5°C
- Flucky
- · Replies 2 ·
Cart losing sand at constant rate: finding velocity after 50s
- Sagar98
- · Replies 21 ·
Charge distribution on spheres with varying radii
- jackw
- · Replies 11 ·
Flying squirrel intercepting nut midair
- Ubrasaur
- · Replies 5 ·
Calculating Load Capacity for a Linear Servo: Is My Math Correct?
- fitz_calc
- · Replies 1 ·
Work done by a constant force/ The elevator (ch6, p2,pg 188)
- gcombina
- · Replies 1 ·
How much does the temperature of a river rise in going over 30 m?
- kingdomxiii
- · Replies 3 ·
How much ice melts when added to 1 kg of lemonade at 20°C?
- kingdomxiii
- · Replies 11 ·
Finding current i_1 as a function of time with variable voltage source
- ksio89
- · Replies 6 ·
Is thermal energy a renewable or non-renewable energy?
- max1020
- · Replies 8 ·
Two conductors connected by a thin wire
- amjad-sh
- · Replies 11 ·
How Is Force Applied to an Inclined Plane?
- Addem
- · Replies 9 ·
What is the maximum height of the square's center-of-mass?
- hanburger
- · Replies 15 ·
External Work done by a tank containing air
- Idris Sayyad
- · Replies 4 ·
Surface tension and force on water between glasses
- Dinheiro
- · Replies 2 ·
Solar Neutrino Flux: Understanding Variables in Equation
- kat1812
- · Replies 1 ·
Finding the Time of Contact using Laws of Motion?
- idontknow101
- · Replies 7 ·
What is Projectile Kinetic Energy?
- slaw155
- · Replies 3 ·
How Do Relative Velocity Changes Impact Object Motion Analysis?
- slaw155
- · Replies 3 ·
Relative velocity in inertial frame
- Satvik Pandey
- · Replies 4 ·
Electrostatic induction - rod and sphere
- eranium
- · Replies 1 ·
Kinematics problem on Tetrahedron
- Satvik Pandey
- · Replies 50 ·
Potential -- Find the potential at node 3
- Rectifier
- · Replies 3 ·
A electric charge question for two spheres
- bennyq
- · Replies 1 ·
Determining Displacement Using Vector Components
- killaI9BI
- · Replies 5 ·
Calculating change in Magnetic Dipole Moment
- iScience
- · Replies 5 ·
Gravity: signs of the equations?
- 21joanna12
- · Replies 1 ·
What will happen with this scale and submerged objects
- warfreak131
- · Replies 5 ·
RC Circuit: How Does Current Flow?
- ajcoelho
- · Replies 2 ·
Problem With Nodal Analysis Question
- wenqin123
- · Replies 3 ·
Electric field decelerating electron
- Daltohn
- · Replies 2 ·
Why is a pendulum only simple harmonic motion for small angles?
- 21joanna12
- · Replies 11 ·
How Does Angular Momentum Affect a Ball Rolling Up an Incline?
- myko
- · Replies 29 ·
Find the speed of the alpha particle after the reaction
- student34
- · Replies 4 ·
Does same mass always mean elastic collision?
- KurtWagner
- · Replies 17 ·
Magnetic Flux through 1 loop due to current on the other
- lion_
- · Replies 4 ·
Classical Relativity and the Speed of Light
- knowLittle
- · Replies 1 ·
Frequency of the sound heard by the passanger in the car
- desmond iking
- · Replies 2 ·
An electric dipole consists of a pair of equal but opposite charges
- needingtoknow
- · Replies 3 ·
What is the tension in a pendulum string?
- 21joanna12
- · Replies 2 ·
Fundamental note vs fundamental frequency of string
- somecelxis
- · Replies 31 ·
Why do 2nd-order linear ODEs have at most two independent solutions?
- LFCFAN
- · Replies 3 ·