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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Question concerning Kirchoff's Laws
- Linus Pauling
- · Replies 5 ·
Is the triboelectric series materials ranked by electron affinity?
- HKUST
- · Replies 1 ·
How Do You Calculate the Velocity and Distance of a Ball Thrown Vertically?
- slpnsldr
- · Replies 25 ·
Wind Turbine: 8MWatts Increase at 650ft?
- Windseaker
- · Replies 4 ·
Does Magnetic Force on a Wire Loop Affect Flux Change in a Solenoid?
- EV33
- · Replies 1 ·
Does Heating a Gas Under Constant Pressure or Volume Affect Its Internal Energy?
- Alvine
- · Replies 1 ·
Net force, acceleration, and position of 3.80 kg block with 16 N tension at 35°
- whizbang21
- · Replies 6 ·
Max Compression Distance x: Solving the Compression Distance Problem
- asimon2008
- · Replies 2 ·
Calculating Phase Angle in an AC Circuit: Practical vs. Theoretical Approaches
- mmmboh
- · Replies 2 ·
Is a light wave composed of waves, photons or both?
- jasper10
- · Replies 3 ·
How does the number of stairs affect power calculations for stair climbing?
- Rentheil
- · Replies 2 ·
Not really HW Just want to fully understand induced emf
- sarahjt1
- · Replies 2 ·
A mass of 1x10^-16 kg is traveling, what is its kinetic energy ?
- xterminal01
- · Replies 5 ·
Charging a capacitor, time constant stuff
- Linus Pauling
- · Replies 13 ·
Doppler shift with microwaves i think
- Dorbo
- · Replies 5 ·
Lightbulb Brightness in a circuit.
- 1988Greens
- · Replies 6 ·
Potential Difference and Power Dissipation Problem
- Scrubphysicst
- · Replies 1 ·
What is the final section the spinning wheel stops on at a county fair game?
- eiriyuki
- · Replies 3 ·
Solve Wave Form Problem: Two Buoys 5m Apart, Wavelength 15m
- luysion
- · Replies 1 ·
Dopple Effect (Frequency vs Time)
- SpringPhysics
- · Replies 2 ·
Does my weight change if I travel
- javas1
- · Replies 4 ·
Rotating loop in magnetic field
- Tekee
- · Replies 1 ·
Impulse of a falling ball under gravity onto a solid surface
- GatorJ
- · Replies 2 ·
Finding the Magnitude of Normal Force
- ny_aish
- · Replies 3 ·
Bus moving toward wall: Doppler effect with sound reflection
- ReMa
- · Replies 3 ·
Circuit analysis - Potential differences of resistors
- Baou
- · Replies 2 ·
Current through each individual resistor of a circuit
- Linus Pauling
- · Replies 3 ·
Calculating Heat Absorption: Liquid Water at 100°C on a Human Hand
- ozziegolf05
- · Replies 3 ·
A block dropped on a spring, distance compressed unknown.
- ramses07
- · Replies 4 ·
Calculating Magnetic Field Strength and Direction in a Two-Wire System
- griercorleone
- · Replies 1 ·
Calculating Magnetic Field Strength and Direction in a Multi-Wire System
- griercorleone
- · Replies 1 ·
Why Do Falling Spacecrafts Experience Weightlessness?
- alexparker
- · Replies 1 ·
My Answer: Explanation of Solutions for Electricity and Magnetism Problems
- Arkangelunix
- · Replies 1 ·
Finding V0 and internal resistance from a battery with variable resistor
- mitsuruangel
- · Replies 6 ·
Ratio of resistance in parallel and series
- mitsuruangel
- · Replies 6 ·
What is the current distribution in a circuit with complex resistors?
- mitsuruangel
- · Replies 2 ·
Calculating Acceleration and Force in an Electromagnetic Rail Gun
- kavamo
- · Replies 2 ·
Why Does a Capacitor Block DC Voltage in a Circuit?
- mmmboh
- · Replies 1 ·
Calculating Speed of T-Bone Car Accident
- TJU
- · Replies 1 ·
Charged particle in uniform magnetic field: true or false
- choco_moo
- · Replies 5 ·
Beat frequency from doppler echo in horseshoe bat sonar
- dcramps
- · Replies 2 ·
Gravitational force of the sun on earth
- tquiva
- · Replies 2 ·
Direction of Magnetic Force on a Wire: Deciphering Diagrams 1-4
- choco_moo
- · Replies 5 ·
Electric Charge Image Theory - Half-Infinite Planes
- aphid
- · Replies 3 ·
Energy Considerations for a Block on a Spring and Incline
- jwxie
- · Replies 2 ·
How Long Would It Take for Earth's Temperature to Rise from 20°C to 90°C?
- tanzerino
- · Replies 18 ·
8 g bullet fired into 250 g block on 1 m table
- amaryllia
- · Replies 8 ·
What is the missle's speed with respect to the planet?
- *64
- · Replies 1 ·
Conservation of engery of a pulley system
- jwxie
- · Replies 2 ·
Using the decay rate of rubidium isotope to determine age of fossils
- Helena_88
- · Replies 5 ·
How much work to push a spring up/down a distance of y?
- Jim01
- · Replies 3 ·
Electrodynamics - Finding Surface Charge
- metgt4
- · Replies 1 ·
Why doesn't a resistor burn up when its power rating is exceeded?
- sarahjt1
- · Replies 1 ·
Potential difference of a battery
- Linus Pauling
- · Replies 7 ·
Increase Tension in String: Rigid Rod, Weight, and Length
- karis
- · Replies 1 ·
Calculating Loop Radius for Force of 5x Pilot Weight on Plane
- Sirsh
- · Replies 31 ·
How Far Does the Ice Cube Travel Up the Slope After Release?
- freak_boy186
- · Replies 5 ·
How can I calculate the maximum velocity of a car without considering friction?
- wermichiel
- · Replies 3 ·
Square Loop Of Wire True or False
- shimizua
- · Replies 2 ·
Coefficient of static friction for banked curve at different speeds
- dapperjon002
- · Replies 3 ·
Block inside a spinning cone - Newton's 2nd Law problem
- Bensky
- · Replies 5 ·
What is the Induced EMF in a Moving Square Loop Near a Current-Carrying Wire?
- Charanjit
- · Replies 10 ·
Why is there no voltage drop in a wire if electrons gain kinetic energy?
- maccha
- · Replies 2 ·
Finding kinetic energy of a 1km asteroid at 20km/s without given mass
- Alyshea
- · Replies 9 ·
How to calculate the initial rate of dischrage of a capacitor.
- mike88si
- · Replies 4 ·
What is the relationship between Δω and Δt in the Fourier Transform of V?
- dnp33
- · Replies 5 ·
Resonance effect in musical instruments
- wakejosh
- · Replies 3 ·
Elementary Astronomy - Initial Mass Function
- Acidic
- · Replies 1 ·
Simple Harmonic Motion w/ postion function
- xxsteelxx
- · Replies 4 ·
How to Find E Field from Potential in Coaxial Cylinders?
- godtripp
- · Replies 3 ·
Calculating Gril's Max Distance on Plank Supported by 2 Points
- procol
- · Replies 7 ·
What Does a Spring Scale Read at Peak When Jumped On?
- fender5791
- · Replies 4 ·
Magnitude of acceleration of a speck of clay
- MannyB
- · Replies 2 ·
Calculating Cat Power: How to Find Horsepower Output
- freak_boy186
- · Replies 3 ·
Finding the final speed and force on a 3703 kg car pushed 22 m with 6563 J of work
- hcps-chent1
- · Replies 2 ·
How Can the Similarity Theorem Prove Segment Proportions in Triangle ABC?
- Misr
- · Replies 2 ·
What is the mutual gravitational force between the Moon and the Sun at 1AU?
- dluv
- · Replies 2 ·
Calculating Power and Resistance of a Domestic Bulb with 0.25A and 12V
- hgo0
- · Replies 4 ·
Tension connecting the cable between the passenger and the engine
- swimflee
- · Replies 3 ·
How Do Standard Deviations Change with Multiple Measurements in Pendulum Timing?
- pearldrumbum
- · Replies 1 ·
Very basic tension question, i don't get the theory
- Lachlan1
- · Replies 3 ·
Person on moving stairs (Potential and kinetic energy)
- pinsky
- · Replies 12 ·
Solve Box/Pulley Q with Rollercoaster Q: Acceleration & Tension
- jagerflyger
- · Replies 1 ·
What is the average coefficient of friction for a skier on a 15.2° incline?
- mparsons06
- · Replies 7 ·
Finding total acceleration on a circular curve with speed decreasing over distance
- meganob77
- · Replies 5 ·
Solving for Impact Velocity: A Bullet of Ice at 0°C
- noobatphysics
- · Replies 4 ·
Which resistor has most current?
- Linus Pauling
- · Replies 1 ·
Finding the distance in an acceleration problem (different)
- SoConfused__
- · Replies 2 ·
Finding the electric potential on a point on a sphere?
- miamirulz29
- · Replies 3 ·
Where does ω=sqrt(MgL/I) come from?
- jumbogala
- · Replies 3 ·
Why do alpha, beta, and gamma radiation have different penetrating abilities?
- pavadrin
- · Replies 8 ·
Tension problem on an inclined plane
- chronos12
- · Replies 4 ·
Force on rat at vertical position as rod swings
- mybrohshi5
- · Replies 1 ·
Solve Orbital Velocity Equation: V=sqrt((g*R^2)/r)
- chris529911
- · Replies 5 ·
Projectile Motion- Horizontal Range and Time of Flight
- leah3000
- · Replies 5 ·
Work done pulling a puck inward during circular motion
- superaznnerd
- · Replies 1 ·
Mass on incline sliding into spring, how compressed?
- snoworskate
- · Replies 4 ·
Calculating Net Gravitational Force on a Sphere from Multiple Particles
- Dotty21690
- · Replies 3 ·
Find force parallel to ramp given mass and theta?
- cellfoneguy
- · Replies 9 ·
How Far Must a Gazelle Run to Escape a Cheetah?
- Cornraker
- · Replies 1 ·