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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How exactly do we know the direction of the E-field here?
- flyingpig
- · Replies 7 ·
Is Thermal Energy Equal to Work Done by Battery in Electric Circuits?
- cupid.callin
- · Replies 4 ·
Gaussian surface for a cylindrical shell at different radii
- flyingpig
- · Replies 7 ·
Does Torque Transform Like a Vector in Different Coordinate Systems?
- realmadrid070
- · Replies 1 ·
How Does an Electric Circuit Function with a Battery, Wire, and Resistor?
- louis9005153
- · Replies 1 ·
Conservation of the impulse, center of the masses
- Zebra91
- · Replies 1 ·
Is deceleration always in the negative direction?
- quietcity100
- · Replies 1 ·
What is the force on point charge A due to other charges?
- m84uily
- · Replies 1 ·
Electric field due to point charges and a ring of charge:
- arl146
- · Replies 6 ·
Current and voltage in an open circuit
- dancergirlie
- · Replies 6 ·
Dragging a Board problem, fairly simple yet somehow I am getting it wrong?
- jcfor3ver
- · Replies 2 ·
Maskelyne's Schiehallion Experiment
- realmadrid070
- · Replies 1 ·
Electric potential from a uniformly charged rod on the z-axis
- enkerecz
- · Replies 1 ·
Centripetal force satellite orbiting problem
- pokeefer
- · Replies 3 ·
Coulomb's Law, find the acceleration
- Dougggggg
- · Replies 9 ·
Why Do Metals Block Electromagnetic Waves?
- gu3szwhoo
- · Replies 3 ·
Find Group Velocity: Solving for k=5.8x10^9 m-1
- magnifik
- · Replies 2 ·
Time Varying Unit Vectors for Analog Clock - Cartesian and Polar Coordinates
- mvrk10256
- · Replies 2 ·
How Do You Calculate Current Through Each Resistor in Complex Circuits?
- Xels
- · Replies 1 ·
Find the period of the motion and the farthest distance from equilibrium
- discordplus
- · Replies 1 ·
What Is the Net Thermal Radiation Transfer Rate for a Stretched Cylinder?
- VitaX
- · Replies 3 ·
What is the Corresponding Temperature on the Centigrade Scale?
- zorro
- · Replies 10 ·
Motor power and energy calculations with circuit design
- venom201
- · Replies 7 ·
What is the limit for using the equation for deflection when m>M?
- MarkusNaslund19
- · Replies 4 ·
Astronomy, Intensity from Given Flux
- jmm5872
- · Replies 1 ·
How do I find the magnitude of the sum of these force vectors in 3 dimensions?
- Inertigratus
- · Replies 20 ·
Statics- Bending Moment Diagram
- Kalus
- · Replies 8 ·
Particle in a uniform electric field
- Bryon
- · Replies 3 ·
Impedance across AC voltage source
- Simfish
- · Replies 1 ·
Potential difference needed to stop a proton at 800,000 m/s
- ryan8642
- · Replies 10 ·
Understanding Electric Fields and Their Directions
- dimpledur
- · Replies 10 ·
Tension as a function of distance
- zorro
- · Replies 25 ·
Fundamental Frequency of Vibrating String: From 256Hz to ?Hz
- hoyy1kolko
- · Replies 2 ·
What is the total charge of a solid sphere with given charge density?
- Uku
- · Replies 1 ·
Why Does Using Specific Heat in a P-V Cycle Yield Zero Net Heat Transfer?
- issacnewton
- · Replies 3 ·
Entropy change when a ball falls in an isolated system
- death_knight
- · Replies 5 ·
Solving a Physics Problem with a Bowling Ball
- runningirl
- · Replies 7 ·
Elliptical orbit transfer and conservation of energy
- Sferics
- · Replies 1 ·
Driven damped harmonic oscillator with f=2cos(5t)
- roldy
- · Replies 4 ·
Confined, Uniform, Electric Field
- eestep
- · Replies 2 ·
What is the magnitude of acceleration in a system with two boxes and a pulley?
- madah12
- · Replies 2 ·
Period and frequency of a lightwave
- menco
- · Replies 5 ·
Why Is the Total Area for Calculating Heat Loss 320 Square Feet?
- tweety1234
- · Replies 3 ·
What do these vector equations with unit vectors mean?
- quietrain
- · Replies 4 ·
Equilateral Triangle Point Charge Question: Find Charge Q at Midpoint D
- Ammora
- · Replies 7 ·
Integration bounds in a continuous charge distribution of a semicircle
- vantz
- · Replies 3 ·
What Was Wrong with My Spring Compression Calculation?
- madah12
- · Replies 3 ·
Calculating Electric Field Near Two Wires Using Vector Notation
- tscuseria
- · Replies 1 ·
How to derive x(t) equation from energy
- cream3.14159
- · Replies 2 ·
Calculating Velocity of Wreckage After Collision
- Chica1975
- · Replies 1 ·
Elastic Collision: Finding Velocities After Collision
- Chica1975
- · Replies 1 ·
Related rates problem for water bottle with varying diameter
- asap9993
- · Replies 4 ·
Why I-V curve but not V-I curve
- KathC
- · Replies 2 ·
What is the coefficient of static friction?
- Chica1975
- · Replies 6 ·
Problem involving centripetal force of a circle
- pokeefer
- · Replies 1 ·
Kinematics Question: Farthest Point and Time Analysis
- davie08
- · Replies 5 ·
How Do You Calculate the Initial Compression of a Spring in a Launcher?
- tobywashere
- · Replies 26 ·
Torque exerted by a spinning flywheel on a machine
- tydychic
- · Replies 10 ·
Force problem What is the electric force on q3 due to the other 2 charges?
- Ammora
- · Replies 5 ·
How Accurate Is Your Electric Field Calculation?
- mohabitar
- · Replies 2 ·
Thermodynamics- Isothermal Expansion
- Muntaballs
- · Replies 5 ·
I with questions on using energy, thermal properties and fluids and density
- amandamarie29
- · Replies 5 ·
Sign change when factoring constants from Fourier series summation
- erok81
- · Replies 1 ·
Wheelbarrow acceleration with two angled forces and friction
- Avalanche
- · Replies 6 ·
What is the electric field at the point?
- Ammora
- · Replies 1 ·
Bullet fired into pendulum block: why is my speed wrong?
- tydychic
- · Replies 25 ·
Total energy stored in a 12V 115Ah battery
- Saladsamurai
- · Replies 6 ·
Force on electron in an upward electric field
- jegues
- · Replies 4 ·
Understanding Projectiles (Example Problem Given)
- smashbrohamme
- · Replies 1 ·
Stopping distance on dry concrete at 88 km/h with locked wheels
- Chica1975
- · Replies 8 ·
Conducting shell conceptual question
- tsuyoihikari
- · Replies 5 ·
I cant solve a simple Acceleration/Deceleration rate of time problem.
- smashbrohamme
- · Replies 3 ·
How to get equation for velocity of Pendulum
- ortegavs
- · Replies 1 ·
Is this a reasonable approach to calculating pressure difference?
- ana111790
- · Replies 6 ·
Thermodynamics, solving for Q1. I've almost got it
- atomicpedals
- · Replies 6 ·
Horizontal Recoil Speed of gun
- Chica1975
- · Replies 7 ·
Balloon problem, thermodynamics
- illidari
- · Replies 2 ·
Normal force on roller coaster car at top of 18 m circular hill
- Theorγ
- · Replies 7 ·
Lost on rotational motion problems
- ness9660
- · Replies 10 ·
Problem of objects falling from a height
- Spensy
- · Replies 3 ·
How Do You Calculate the Tangential Speed of a Fan Blade?
- Chica1975
- · Replies 12 ·
How Does Black Matter Relate to Plasma in the Universe?
- rocephin
- · Replies 4 ·
Understanding Tension Forces in a Motorboat and Water Skiing Scenario
- mHo2
- · Replies 8 ·
How do I calculate the period for a system with 2 springs and 1 mass in series?
- Matt1234
- · Replies 4 ·
How long will it take Michael to catch Robert in a long distance race?
- bcaie16
- · Replies 9 ·
Circuits: Current and Energy of Capacitor
- Saladsamurai
- · Replies 3 ·
Quality of Lenses Using Newton's rings
- wilsonge
- · Replies 2 ·
Solving Free-Fall Kinematics: Find Acceleration from Initial Speed
- sarah_615
- · Replies 2 ·
Calculating Flux through Square
- Faint
- · Replies 11 ·
Connected bodies - Spring and 2 blocks
- zorro
- · Replies 2 ·
Buoyancy of a pail of water problem
- darkmagic
- · Replies 10 ·
Total traslational kinetic energy problem
- amandamarie29
- · Replies 1 ·
Forces [ Finding displacement ]
- makemefly
- · Replies 1 ·
Two unequal charges repel, suspended from same point.
- Darkwolf312
- · Replies 1 ·
What does the notation dQ/dt mean in calculus and physics?
- rambo5330
- · Replies 3 ·
Calcluated density value different from literature
- ana111790
- · Replies 1 ·
How Do Temperature and Pressure Changes Affect Tire Pressure?
- amandamarie29
- · Replies 3 ·
How to Calculate Average Force of a Proton Passing Through a Metal Film
- Chica1975
- · Replies 3 ·
Either I can't do Pythagoreas or this book can't
- flyingpig
- · Replies 10 ·
Find Min Radius for Sound Wave in Tube
- OopsIDied
- · Replies 1 ·