Introductory Physics Homework Help Forum

Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.

Threads

Net Power to Accelerate Car up Inclined Road

  • songokou77
  • · Replies 3 ·
Replies
3
Replies
3

The Speed of a Supernova's Shockwave: How Long Until It Reaches Earth?

  • Commander Blue
  • · Replies 5 ·
Replies
5

Circular Motion Problem: Calculating Acceleration for a Re-entry Maneuver

  • pulau_tiga
  • · Replies 2 ·
Replies
2

Calculating Stream Impact Distance from Container with Bernouilli's Equation

  • CollectiveRocker
  • · Replies 5 ·
Replies
5

How Do Masses and Springs Affect Vibration Frequencies?

  • e(ho0n3
  • · Replies 2 ·
Replies
2

What if a train travelled at 3/5 c

  • stunner5000pt
  • · Replies 10 ·
Replies
10

Galilean Relativity and Tangential Acceleration

  • ek
  • · Replies 4 ·
Replies
4

Designing a Force Scale Test w/ Rubber Bands

  • UrbanXrisis
  • · Replies 3 ·
Replies
3

Proving the Limit of Binomial Distribution as Poisson: Formal Proof

  • relinquished™
  • · Replies 2 ·
Replies
2

Deriving Gauss and Stokes theorems for B = Ap(r)

  • galipop
  • · Replies 9 ·
Replies
9

Determining total amplitude of out of phase waves

  • Gza
  • · Replies 2 ·
Replies
2

Electric Field Strength Calculation for a Point Charge

  • Ezhil
  • · Replies 5 ·
Replies
5
Replies
5

Helium balloon buoyancy, diatomic gas volume, and translational energy

  • Kelju Ivan
  • · Replies 1 ·
Replies
1

Gravitational Force on different planets

  • BlackMamba
  • · Replies 2 ·
Replies
2

What if a particle travelled at c/3

  • stunner5000pt
  • · Replies 4 ·
Replies
4

Calculating Contact Forces Between Blocks on a Frictionless Surface

  • Lannie
  • · Replies 2 ·
Replies
2

Maximum force on lower block before top block slips

  • vsage
  • · Replies 2 ·
Replies
2
Replies
12

What is the kinetic energy of the object

  • dg_5021
  • · Replies 2 ·
Replies
2

Force on a rock at maximum height and mass during freefall

  • Shay10825
  • · Replies 19 ·
Replies
19

Kinetic Energy and Work-Energy Theorem

  • BlackMamba
  • · Replies 13 ·
Replies
13

Finding liquid density from spring balance readings

  • CollectiveRocker
  • · Replies 11 ·
Replies
11

Ionization Energy: Explain Metal-Nonmetal Oxide Reactions

  • needhelpperson
  • · Replies 2 ·
Replies
2

Acceleration of a Speed Skater on Rough Ice

  • viendong
  • · Replies 2 ·
Replies
2

Seemingly simple, what am i doing wrong?

  • SnowOwl18
  • · Replies 6 ·
Replies
6

Newton's 2nd Law Applied to a Particle In Uniform Circular Motion

  • Faiza
  • · Replies 2 ·
Replies
2

True or false: energy conservation and work statements

  • songokou77
  • · Replies 4 ·
Replies
4

Cart and load on inclined plane with pulley system

  • smitheric420
  • · Replies 2 ·
Replies
2

Ionization energy and bonding

  • needhelpperson
  • · Replies 2 ·
Replies
2

Factor of safety against sliding and rotation of a concrete dam

  • rishid
  • · Replies 4 ·
Replies
4

Finding a parabola with curvature 4 at the origin

  • fresh
  • · Replies 2 ·
Replies
2

Doppler shift of lights on spaceships traveling between Earth and Mars

  • stunner5000pt
  • · Replies 2 ·
Replies
2
Replies
2

Finding patient weight from four nurses lifting with 240N each

  • Spitting_Camel
  • · Replies 2 ·
Replies
2

Calculating the Effective Value of g at 3330 m Above Earth's Surface

  • strugglin-physics
  • · Replies 3 ·
Replies
3

Magnitude Equation: What Is It?

  • kimikims
  • · Replies 2 ·
Replies
2

What Is the Lunar Mass Compared to Earth's?

  • J7
  • · Replies 8 ·
Replies
8
Replies
4

Calculating Angle Theta in Centripetal Motion Problem

  • strugglin-physics
  • · Replies 11 ·
Replies
11

Find the Average Power of a 560 kg Elevator

  • Unknown_20
  • · Replies 9 ·
Replies
9

Spatial separation of simultaneous events across reference frames

  • stunner5000pt
  • · Replies 6 ·
Replies
6

Solving Tough QM Questions: Applying Bohr Quantization Rules

  • AKG
  • · Replies 5 ·
Replies
5
Replies
3

Simple square root factoring question

  • Odyssey
  • · Replies 6 ·
Replies
6
Replies
4

Acceleration Question w/ unknown variables

  • Thaore0
  • · Replies 2 ·
Replies
2

Atwood's machine accelerating upward with two unknown mass accelerations

  • diegojco
  • · Replies 2 ·
Replies
2

How can I calculate uncertainty in my data?

  • Freeze
  • · Replies 2 ·
Replies
2

Calculating the Gravitational Force of Two Bowling Balls

  • Kdawg
  • · Replies 3 ·
Replies
3

Power of Niagara Falls: How Many 80 W Bulbs Can It Power?

  • Unknown_20
  • · Replies 3 ·
Replies
3

Voltage needed to accelerate protons to 5.0×10^6 m/s

  • gto6570
  • · Replies 2 ·
Replies
2

Deriving distance formula for uniformly decelerated automobile

  • NHS
  • · Replies 5 ·
Replies
5

What are some practical applications of logarithmic functions in daily life?

  • Poweranimals
  • · Replies 7 ·
Replies
7

Compute Limits: f(x) = 2,3 - Does Not Exist

  • buffgilville
  • · Replies 2 ·
Replies
2

Minimum radius for vertical loop at 1400 km/h with 6.0 g limit

  • justinbaker
  • · Replies 3 ·
Replies
3

Energy equation with central force F = -Hmu^-3

  • Odyssey
  • · Replies 2 ·
Replies
2

How Do You Solve Incline Plane Problems with Kinetic Friction?

  • pinky2468
  • · Replies 5 ·
Replies
5

Max Rage of a Projectile Uphill

  • Tom McCurdy
  • · Replies 9 ·
Replies
9

Finding position of object with two vector forces

  • debbie18
  • · Replies 4 ·
Replies
4
Replies
2
Replies
5

How Can I Navigate the Complexities of Chaos and Randomness?

  • Poursoi
  • · Replies 4 ·
Replies
4

What is the velocity after the collision?

  • punjabi_monster
  • · Replies 2 ·
Replies
2

Constant power vs constant acceleration for car engine problem

  • TraceBusta
  • · Replies 11 ·
Replies
11

Equation of a plane orthogonal to a vector

  • starbaj12
  • · Replies 46 ·
2
Replies
46

Finding the integral of (sec x)^3 dx using integration by parts

  • CinderBlockFist
  • · Replies 2 ·
Replies
2

Substance shows acidic on 2 indicators but basic on 2 others

  • alicezz
  • · Replies 2 ·
Replies
2

Acceleration/Velocity vectors question

  • SlammedMax
  • · Replies 2 ·
Replies
2

How do I integrate these 3 functions?

  • Odyssey
  • · Replies 7 ·
Replies
7

Fairground wheel Kinematics Question

  • james_rich
  • · Replies 4 ·
Replies
4

Determining nuclide half-lives from activity measurements

  • broegger
  • · Replies 5 ·
Replies
5

Boost Your Math Skills: Prealgebra Review Assistance

  • Sweet & Intellectual
  • · Replies 2 ·
Replies
2

How Do You Calculate the Velocity of a Stunt Car Relative to Earth?

  • star223
  • · Replies 2 ·
Replies
2
Replies
3

Circular Motion and Centripetal Acceleration

  • aidos
  • · Replies 7 ·
Replies
7

Review of circular motion and gravity homework questions

  • PhysicsNovice
  • · Replies 12 ·
Replies
12

RPM of centrifuge sample with 7.80×10³g centripetal acceleration

  • Doug Desatnik
  • · Replies 2 ·
Replies
2

Finding co-ordinates in squares

  • bob4000
  • · Replies 4 ·
Replies
4

Prove A = √(2/L) using Integration - Step by Step Guide

  • danoonez
  • · Replies 5 ·
Replies
5

What Are Some Innovative Grade 12 Physics Project Ideas on Lightning?

  • Romio00
  • · Replies 6 ·
Replies
6

How Do Different Spring Constants Affect Oscillation Frequency?

  • smb62
  • · Replies 3 ·
Replies
3

Struggling with Complex Double Integrals

  • Blast0
  • · Replies 3 ·
Replies
3

Finding constants a and b for a piecewise continuous function

  • pulau_tiga
  • · Replies 4 ·
Replies
4

How Fast Should a Motorcyclist Go to Stay on a Loop?

  • ptrainerjoe
  • · Replies 2 ·
Replies
2
Replies
3

Stone wedged in tire tread: finding radius from centripetal force

  • shawonna23
  • · Replies 5 ·
Replies
5

What Are the Steps to Solve These 3 Algebra-Based Physics Problems?

  • SJC25
  • · Replies 4 ·
Replies
4

What's the deal with elevators?

  • r.l.newman
  • · Replies 2 ·
Replies
2

Rope, Pulleys. and Lots of Tension

  • kazimo
  • · Replies 2 ·
Replies
2

Proving 13|4^(2n+1)+3^(n+2) for Positive Integers

  • CartoonKid
  • · Replies 11 ·
Replies
11

How can I determine if a set of vectors forms a subspace?

  • phy
  • · Replies 4 ·
Replies
4

Free body diagrams for stacked books with unequal masses

  • Faiza
  • · Replies 2 ·
Replies
2

Free body diagram for the block showing all the forces

  • Faiza
  • · Replies 2 ·
Replies
2

SHM: Block and Piston Separation and Continuous Contact

  • smb62
  • · Replies 2 ·
Replies
2

Banked Circular Highway Curve? Find friction

  • GingerBread27
  • · Replies 20 ·
Replies
20

Finding the Intersection of Infinite Sets: A Basic Set Theory Question

  • semidevil
  • · Replies 2 ·
Replies
2

Why Does the Limit of |x+4|/x+4 Equal 4 as x Approaches -4 from the Right?

  • buffgilville
  • · Replies 2 ·
Replies
2

Frequency of a Spark Timer, 0.10s

  • nmichelle
  • · Replies 3 ·
Replies
3