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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Object weighs 15N in air and 13N in water, which mass to use for density
- 7starmantis
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Calculating Car Collision Distance at 30 "g's"
- candycooke
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The Angle of the Launch of a Rocket against a Strong Wind
- seichan
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How far from the Middle must the man stand to balance the boy
- mlavio829
- · Replies 1 ·
Gravitational potential energy problem
- Tuugii
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What is the Correct Radius of a Brass Rod Given Its Mass and Density?
- 7starmantis
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Find the tension in each of the cords
- darshanpatelh
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Can soldiers marching at 2 Hz cause resonance in a 16 Hz bridge?
- opuktun
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Why Does Acceleration Vary in a Ramp Experiment?
- jnimagine
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Why Does Torque Increase with Radius?
- sganesh88
- · Replies 7 ·
How Do Identical Conducting Spheres Behave With Different Initial Charges?
- rocomath
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Calculating the Distance for Dropping Water Balloons on Students Entering a Dorm
- torresmido
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Electric field from two concentric shells with opposite charges
- tony873004
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Centripetal acceleration: car on circular track and roller coaster dip
- tem_osu
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How Do You Calculate Net Electric Force in a Square Configuration?
- =CIA= h1tman
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How Do Potentials and Test Charges Interact?
- Aphrael
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Damping I made an assumption I am not sure is right
- LandOfStandar
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Calculate Horizontal Force at an Incline
- am08
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Force Problem with crash test car
- am08
- · Replies 3 ·
Device propelled by 305g soup can falling 20cm
- p4physics
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How far up the slope will the block get and will it come back down?
- nightshade123
- · Replies 14 ·
Rotational Inertia (Moment of Inertia) of a Rod
- tseryan
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Finding velocity components from acceleration and angle
- sailsinthesun
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How Does Kinetic Energy Affect Spring Compression in Simple Harmonics?
- roughneck84
- · Replies 13 ·
Moment of inertia of a thin spherical shell
- abinxur
- · Replies 2 ·
A Bar Suspended by Two Vertical Strings
- laxmanic33
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Density of Asteroids, Escape Velcoity and Jumping
- TFM
- · Replies 6 ·
Solve Gauss's Law and Flux: 55.3M Excess Electrons
- dals2002
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Why Are Instantaneous and Average Velocities Different in Uniform Acceleration?
- jnimagine
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How many pounds per square inch is exerted on the large block of steel
- castlegates
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Acceleration and speed of 4kg block on frictionless 30° incline
- hasnain721
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How to Calculate Average Speed for a Commuter?
- Andyjimbo
- · Replies 7 ·
Electric field where potential is zero between two point charges
- 743344
- · Replies 2 ·
Conceptual Projectile Question
- rwx1606
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What Is the Resultant Force Exerted by a Car on the Road?
- jelly1500
- · Replies 9 ·
Electric field from concentric spheres
- tony873004
- · Replies 4 ·
Find the Contact Force Between Two Blocks
- am08
- · Replies 10 ·
How Do You Calculate the Density of a Body and a Liquid Based on Buoyancy?
- vbalaji555
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Yank and Pull - String Tension Problem
- KolosoK
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How Far Will a Steel Ball Travel at a 29-Degree Angle?
- am08
- · Replies 8 ·
Which velocity to use in centripetal acceleration equation for a vertical turn
- MaZnFLiP
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How much current (in A) flows through the ammeter for Circuit b?
- kapopka88
- · Replies 1 ·
Soap film thickness and reflected light colors
- 4.19mile
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Electric Field and dipole moment
- Gear300
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What does +2g acceleration mean when turning?
- MaZnFLiP
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Calculating Electric Flux Through Cube's Left Face
- tony873004
- · Replies 4 ·
Optics in Water: AP Physics B Concepts and Calculations for Light Sources
- baby_angel248
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Calculating Maximum Velocity of a Dropped Object
- tengtou
- · Replies 7 ·
Two Blocks on an Incline: Solving for Acceleration and Tension
- ssgohan434
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Point charge formula and set-up
- rocomath
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Simple factoring that i can't do
- gillyr2
- · Replies 8 ·
How High Will a Toboggan Go Up an Icy Hill?
- bertoline
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How Should the Quarterback Throw to Reach the Moving Receiver?
- bmchenry
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How Is Electric Flux Calculated Through a Tilted Surface?
- daimoku
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Newton's Second Law of Motion acceleration problem
- XxMuDvAyNexX
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Parallel vs. Series Resistors: Solving for Unknown Voltage and Current
- BuBbLeS01
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Circus performer jumping from 10m onto a net 5m away
- MoreZitiPlease
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Find Contact Force Between 2 Blocks
- seichan
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Solve Physics Problem: 3000kg Space Capsule
- bondgirl007
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Calculating Tension and Acceleration in a Two-Pulley System
- savelieffd
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What is the phase difference for two particles executing simple harmonic motion?
- LandOfStandar
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Voltage Vaporization: 2.5C Charge, 3.3 MJ Energy, 1.32 MV Potential Diff
- lostfan176
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Projectile Motion - one question.
- MoreZitiPlease
- · Replies 1 ·
Why doesn't kinetic energy at perihelion equal half the potential energy magnitude?
- klarge
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Angles and forces/normal force
- XxMuDvAyNexX
- · Replies 17 ·
Magnetic flux between coaxial conductors
- einarbmag
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Change in Entropy of Ice Cube-Lake System
- hils0005
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A Spring Supporting a Box Containing a Block
- cj
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Vectors - Find resultant displacement
- FalconKICK
- · Replies 12 ·
Fast Car Collision Impulse Comparison
- naoki300
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Finding I1, I2, and E in a circuit with ammeter reading 4.11 A
- BuBbLeS01
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Solving for Resistance and EMF in a Circuit
- BuBbLeS01
- · Replies 16 ·
Resistance of wire made from copper and iron sections
- BuBbLeS01
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Calculate Power Dissipated by a Lightbulb Socket
- BuBbLeS01
- · Replies 9 ·
Ideal Gas Law Application: Finding the Temperature of Air in a Tire
- iflabs
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What is the relative velocity of a canoe on a river?
- bichz33
- · Replies 2 ·
Calculating Power Dissipation in Series Lightbulb Circuit
- BuBbLeS01
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Calculating Power Dissipation in a Simple Circuit
- BuBbLeS01
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How Does Vector Addition Determine Acceleration on a Frictionless Surface?
- TS656577
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Solve Block on an Incline: Net Force, Accel, Speed in 9 m/s
- cstout
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How Does Charge Location Affect Electric Field Intensity?
- kamehamehaaa
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What is the Work Needed to Move a Charge?
- ttiger2k7
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Direction of angular acceleration
- brendan3eb
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How Strong Is the Electric Field at the Midpoint of a Triangle's Side?
- kamehamehaaa
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How Do Smoke Particles Move in a Glass Tube Observed Under a Microscope?
- unknownn148
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Student climbing rope at 200-W power output
- Grey_117
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What Frequency Does an Atom in a Cubic Lattice Absorb Radiation?
- catkin
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Smallest radius for a bicyclist on a flat track with friction
- tectactoe
- · Replies 9 ·
Quick friction concept question
- jcpwn2004
- · Replies 2 ·
Does Pipe Diameter Affect Water Flow in a Circuit?
- JasonBourneV
- · Replies 5 ·
Calculating Power Output and Heat Dissipation in a Coal-Powered Plant
- chrisama
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Finding max and min capacitance with different dielectrics
- Bob Loblaw
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Method for instatnt cooling of water
- alibaba2
- · Replies 6 ·
Car stopping distance with constant deceleration
- anOldMan
- · Replies 5 ·
Instantaneous Speed From Acceleration
- schlogz
- · Replies 3 ·
Solving 2D Motion: 80m Cliff, 1330m Distance
- clope023
- · Replies 4 ·
Truck accelerating up/down on wedge with friction.
- nickclarson
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Why does Coulomb's Law include a pi in the denominator?
- Old Guy
- · Replies 3 ·
How Does an Electron Behave Between Parallel Conducting Plates?
- stanli
- · Replies 1 ·