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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Satellite Motion - This doesnt seem right
- TheKovac
- · Replies 4 ·
Calculating Electric Field Using Lorentz Force Law
- Duodora
- · Replies 6 ·
How Is J₀ Calculated in a Wire with Nonuniform Current Density?
- splac6996
- · Replies 1 ·
Spring stretching under gravity and electric field on another planet
- ~christina~
- · Replies 23 ·
Diver stopping distance with water resistance force
- princesspriya
- · Replies 14 ·
Projectile Motion Problem: Finding Velocity Before Impact
- technology
- · Replies 9 ·
How Do You Calculate Torque from Cross Product?
- Nanuven
- · Replies 2 ·
Finding friction and rotational inertia of a rolling wheel with applied force
- Nanuven
- · Replies 3 ·
Conservation of Angular Momentum of an asteroid
- ASUengineer16
- · Replies 2 ·
How Does a Vertical Spring's Force Affect Oscillation and Position Calculations?
- clope023
- · Replies 5 ·
Physics particle on a wave problem
- rnp
- · Replies 10 ·
Calculating Normal Force on a Snow Sled with Newton's Laws
- roam
- · Replies 3 ·
Electric Potential / Electric Energy
- VanKwisH
- · Replies 17 ·
Find the average force exerted on Superman's chest
- LesVampires
- · Replies 16 ·
Momentum must be conserved, so this is true, right?
- StephenDoty
- · Replies 7 ·
Why does torque around the pin not equal zero in static equilibrium?
- bcjochim07
- · Replies 2 ·
Spring mechanics with 2 different masses
- fonzi
- · Replies 23 ·
Biot-Savart Law: Magnetic Fields on an equilateral triangle
- alovesong
- · Replies 3 ·
Radius and Weight and the Earth
- susan__t
- · Replies 4 ·
Period of an object dropped through Earth's center
- frasifrasi
- · Replies 4 ·
Finding equivalent capacitance with C₁=10 μF, C₂=5 μF, C₃=4 μF
- ~christina~
- · Replies 15 ·
Calculate Pat's Weight at Earth's Double Radius
- susan__t
- · Replies 2 ·
Pressure difference between diver and lungs at 6m depth
- chiurox
- · Replies 7 ·
Calculating Angular Magnification: f=10cm, i=25cm
- rootX
- · Replies 1 ·
Normal force on car going over a curved bump at 6 m/s
- TheKovac
- · Replies 4 ·
Force needed for simple harmonic motion with amplitude 15 cm
- brett812718
- · Replies 3 ·
How to find the angle between wire and magnetic field
- dedra73
- · Replies 1 ·
Series resistance to step down 120V to 54V for a 140W motor
- yuvlevental
- · Replies 2 ·
Determine curren in a 1500 W water heater connected to 220 V
- adrianakarad
- · Replies 4 ·
What Calculations Are Needed for Analyzing the Photoelectric Effect on Tungsten?
- shakejuhn
- · Replies 5 ·
Average Current Through A Coil Over An Interval
- rzermatt
- · Replies 5 ·
Forces on stacked blocks on a 20° slope with pulley
- wraithetc
- · Replies 2 ·
Finding the charge for Capacitor
- tony873004
- · Replies 8 ·
Learn Kirchoff's Rules: Solve Circuit With Series and Parallel Combinations
- tony873004
- · Replies 1 ·
Rod suspended by springs in magnetic field moves when circuit closes
- Mthees08
- · Replies 2 ·
Calculating Power for Elevator Ascent: 2100 N at 8.0 m/s
- onestarburns
- · Replies 5 ·
Determine the magnitude of the current in the circuit
- dedra73
- · Replies 1 ·
What is the frequency of a mass-spring system oscillation?
- ThePhoenixEffec
- · Replies 1 ·
Frequency in two different wires
- LandOfStandar
- · Replies 11 ·
White dwarf density, free fall acceleration, and potential energy
- aliciagu
- · Replies 2 ·
How Does Time Affect Current in a Series RC Circuit?
- Ryll
- · Replies 1 ·
Calculate the frequency of the siren
- BioMechanical
- · Replies 1 ·
Vertical trajectory with air resistance
- GregA
- · Replies 1 ·
Angular Momentum of a system of particles
- dumdum000333
- · Replies 1 ·
Solve Momentum Problem for Dan on Skateboard
- techtrailer89
- · Replies 1 ·
How to Calculate Tension in a Hinged Gate with an Off-Center Load
- kontroll2007
- · Replies 4 ·
What is the angular momentum of the bullet
- rasgar
- · Replies 4 ·
Theta_max = 53.8° Acceleration of Hoop on Inclined Ramp
- cmcc3119
- · Replies 1 ·
Potential Energy of a Proton Near a Positively Charged Sphere: Does it Decrease?
- daniel69
- · Replies 1 ·
Current in wire loop inside a solenoid
- gills
- · Replies 7 ·
Where are Electrons on a Charged Metal Sphere?
- daniel69
- · Replies 6 ·
Spring Constant air-track carts
- 1831
- · Replies 7 ·
Old Faithful geyser and pendulum velocity problems
- Blubla
- · Replies 7 ·
Why is vertical speed decreasing and increasing true but speed at top zero is false?
- watsup91749
- · Replies 2 ·
Electric power transformer problem
- MIA6
- · Replies 1 ·
What is the upward velocity of a tennis ball after bouncing off a volleyball?
- subwaybusker
- · Replies 8 ·
Springs and Elastic Coollisions
- fibb
- · Replies 1 ·
Frequency and Wavelength Problem
- iwonde
- · Replies 2 ·
Satellite Orbit Radius for 5 Revs/Day: Get the Answer
- Nightrider55
- · Replies 6 ·
How to Approach Questions Related to Waves
- _Mayday_
- · Replies 20 ·
Why Is a Clockwise Moving Charge in a Magnetic Field Negative?
- ttiger2k7
- · Replies 5 ·
How Do You Calculate Velocity in Physics Problems?
- MoreZitiPlease
- · Replies 2 ·
How Does AC Power Flow in Home Appliances Despite Changing Current Direction?
- Vishal60
- · Replies 2 ·
[101] Magnetic field strength in fN
- WPCareyDevil
- · Replies 1 ·
How Do You Calculate Tension in a Cable and Hinge Force in a Beam System?
- shippage
- · Replies 1 ·
Average force of air resistance
- bewocc
- · Replies 1 ·
Magnetic field strength needed to lift a heavy conductor
- kheila
- · Replies 6 ·
Moment of Inertia and two uniform disks
- BitterSuites
- · Replies 6 ·
How Long Does It Take for Radio Transmissions Between Earth and Jupiter?
- kokenwa
- · Replies 1 ·
How Is EMF Induced in a Rotating Rectangular Loop?
- daimoku
- · Replies 1 ·
Why Did Our Geophysical Group Use a L&N Bridge Instead of a Slide-Wire Bridge?
- hamburgler
- · Replies 3 ·
What is the rotational inertia of the door about the hinges?
- mjdiaz89
- · Replies 2 ·
How Does Tightening a Guitar String Affect Its Frequency?
- J03
- · Replies 3 ·
How Does Tightening a Guitar String Affect Beat Frequency?
- J03
- · Replies 3 ·
How many floors must you climb to burn off a Big Mac?
- jerzy986
- · Replies 7 ·
Find the coefficient of static friction
- sprinter08
- · Replies 3 ·
2 object gravitation, collision speed
- aalasso
- · Replies 1 ·
Finding Final Velocity of a Falling Rotating Rod
- blue5t1053
- · Replies 6 ·
Does the Photoelectric Effect Indicate Quantized Energy Emission by Atoms?
- haoku
- · Replies 1 ·
Total force by molasses on inside of tank
- shenwei1988
- · Replies 1 ·
Why Does the Merry-Go-Round Spin at 0.276 rad/sec After the Child Jumps On?
- blue5t1053
- · Replies 11 ·
Do Vectors a, b, and c Satisfy the Right Hand Rule?
- Grawr
- · Replies 6 ·
Tension and Rolling a sphere(Very Detailed, though)
- tcin06
- · Replies 1 ·
Finding orbital period for satellite above a planet with only density given
- shenwei1988
- · Replies 3 ·
How far does the car travel while slowing down?
- StephenDoty
- · Replies 13 ·
Finding terminal velocity of falling box using drag force formula
- chris_0101
- · Replies 2 ·
Force on electron from current-carrying wire
- dvdqnoc
- · Replies 2 ·
How Much Weight Can a 2.8 kg Air Mattress Support in Water Before Sinking?
- b0r33d
- · Replies 1 ·
Calculating Power of Pump in Flooded Basement
- duke_nemmerle
- · Replies 2 ·
Velocity Problem of neutron star
- Cursed
- · Replies 6 ·
What Is the Maximum Coefficient of Static Friction for a Sliding Block System?
- yuvlevental
- · Replies 11 ·
Finding voltage and current across resistors with only resistance given
- anonymous820
- · Replies 5 ·
65W bulbs connected in parallel (hopefully easy)
- HyperSniper
- · Replies 4 ·
Unstretched Spring and Angular Velocity Problem
- BitterSuites
- · Replies 7 ·
Electric and magnetic fields with electron
- cas111
- · Replies 1 ·
Calculating Rotational Kinetic Energy of a Clock's Hands
- elkedoring
- · Replies 3 ·
How Do Rotational Dynamics Affect Mechanical Systems?
- tcin06
- · Replies 5 ·
Ferry boat sinks 4 cm when truck boards—find combined weight
- b0r33d
- · Replies 1 ·
How Do Suncreams Absorb UV Radiation at the Atomic Level?
- Air
- · Replies 5 ·
Magnetic Force on a Wire with a Changing Direction of Current
- Andy111
- · Replies 3 ·