Introductory Physics Homework Help Forum

Post thread
Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Problem check please (projectile motion)
  • · Replies 2 ·
Replies
2
Views
2K
Force and Newton's laws (airbag)
  • · Replies 2 ·
Replies
2
Views
11K
What are the top US universities for studying physics?
  • · Replies 6 ·
Replies
6
Views
7K
Solve Two Pulley System w/ Masses m1, m2, & m3
  • · Replies 14 ·
Replies
14
Views
20K
Easy Vertical Motion Question
  • · Replies 4 ·
Replies
4
Views
3K
Newton's Laws homework questions
  • · Replies 4 ·
Replies
4
Views
4K
What is the energy lost due to friction?
  • · Replies 2 ·
Replies
2
Views
3K
Temp diff in Greenland and Iceland
  • · Replies 3 ·
Replies
3
Views
3K
Sail Boat Race Trigonometry, just stuck on first part
  • · Replies 2 ·
Replies
2
Views
11K
The problem about tension forces
  • · Replies 15 ·
Replies
15
Views
8K
Uniform circular motion - airplane
  • · Replies 3 ·
Replies
3
Views
15K
Why Does Height Affect Calculations in a Block's Kinetic Energy Problem?
  • · Replies 2 ·
Replies
2
Views
2K
Spring Constants: Solving Sliding Block Problem
  • · Replies 6 ·
Replies
6
Views
4K
Poisson stats: signal to noise
  • · Replies 3 ·
Replies
3
Views
4K
How Does a Pendulum Reveal Bus Acceleration in Different Reference Frames?
  • · Replies 2 ·
Replies
2
Views
3K
How Far Does Bob Plunge and What is the Maximum Force on the Bungee Cord?
  • · Replies 2 ·
Replies
2
Views
3K
It's that time again: Help by tonight
  • · Replies 2 ·
Replies
2
Views
2K
Help with Acc Linear Motion: Part 1 & 2, Part B: Prove u > 9.8
  • · Replies 3 ·
Replies
3
Views
3K
Question regarding tension and friction
  • · Replies 3 ·
Replies
3
Views
2K
How is Capacitance, Resistance and Time to fully charge related?
  • · Replies 2 ·
Replies
2
Views
2K
Why Am I Getting the Wrong Answers for My Physics Problems?
  • · Replies 3 ·
Replies
3
Views
2K
What is the acceleration of a box on a 20 degree inclined plane?
  • · Replies 2 ·
Replies
2
Views
3K
Solving Graphs of All Nature | Velocity, Accerleration & Force
  • · Replies 3 ·
Replies
3
Views
4K
If a rock is dropped off of a sea cliff
  • · Replies 2 ·
Replies
2
Views
3K
Why Does the Ball Thrown Upward Return to the Man in 2 Seconds?
  • · Replies 3 ·
Replies
3
Views
4K
John & Julia's Ages: Solving the Mystery
  • · Replies 3 ·
Replies
3
Views
3K
Finding the Inductance of a coil
  • · Replies 2 ·
Replies
2
Views
26K
Geometry Help: Solving Common Questions for Students - Get Assistance Now!
  • · Replies 2 ·
Replies
2
Views
2K
How High Was the Girl When She Released the Rope?
  • · Replies 2 ·
Replies
2
Views
7K
Max Velocity on Elevated Curve: Solving for Mu_s
  • · Replies 3 ·
Replies
3
Views
2K
Why Does the Book Say the Final Direction is SW When Moving From North to West?
  • · Replies 9 ·
Replies
9
Views
5K
Determine the acceleration of rope hoist
  • · Replies 5 ·
Replies
5
Views
12K
Solving a Force Problem: Finding the Angle of a Hanging Object
  • · Replies 3 ·
Replies
3
Views
2K
Finding Initial Velocity of a Ball Using Time and Distance
  • · Replies 3 ·
Replies
3
Views
4K
Integrating 1 over root x times root x plus 1 - A Guide
  • · Replies 4 ·
Replies
4
Views
2K
Find p Given a.b = 4, a=[6,3,-2], b=[-2,p,-4]
  • · Replies 10 ·
Replies
10
Views
2K
Help Solve Golf Launch Speed Problem w/o Initial Velocity or Time
  • · Replies 5 ·
Replies
5
Views
2K
Solving Complex If/Then Statements
  • · Replies 2 ·
Replies
2
Views
2K
How High Does a Rocket Go in a Physics Experiment?
  • · Replies 4 ·
Replies
4
Views
3K
A sledge loaded with bricks has a total mass of 18.0 kg
  • · Replies 3 ·
Replies
3
Views
5K
Relative motion of an elevator question
  • · Replies 3 ·
Replies
3
Views
11K
Solving a Ramp Problem with 1kg Block
  • · Replies 3 ·
Replies
3
Views
5K
Understanding Tension Force in a System of Connected Masses
  • · Replies 3 ·
Replies
3
Views
9K
Projectile motion of a salmon jump
  • · Replies 2 ·
Replies
2
Views
19K
What is the minium force required to pull block C out from under block B?
  • · Replies 3 ·
Replies
3
Views
3K
SIMPLE force of friction question
  • · Replies 2 ·
Replies
2
Views
4K
Projectile motion and gravitational acceleration problem
  • · Replies 2 ·
Replies
2
Views
3K
Highway Patrol - Argh, looks so simple
  • · Replies 4 ·
Replies
4
Views
4K
Jack's River Race: Solving the Shortest Path Problem
  • · Replies 3 ·
Replies
3
Views
2K
Acceleration of an object is always directed perpendicular to its velocity
  • · Replies 3 ·
Replies
3
Views
4K
Prove some laws of sequencing limits
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad nuclear physics; spin parity rules
  • · Replies 3 ·
Replies
3
Views
12K
Does it make any difference that the Earth is not round?
  • · Replies 11 ·
Replies
11
Views
3K
Understanding the Force of Buoyancy: Solving a Tricky Homework Question
  • · Replies 3 ·
Replies
3
Views
3K
One-Dimensional Kinematics: Height vs Time
  • · Replies 2 ·
Replies
2
Views
5K
Isothermal compression of monatomic gas ?
  • · Replies 5 ·
Replies
5
Views
8K
Solving a Tension Problem with 9 kg Handing Weight & 5 kg Block
  • · Replies 2 ·
Replies
2
Views
2K
How High is the Coefficient of Static Friction for a Drag Car's Tires?
  • · Replies 5 ·
Replies
5
Views
4K
How can I solve this tricky algebra problem from PHY404G?
  • · Replies 2 ·
Replies
2
Views
3K
Calculating the Distance of L1 From Earth
  • · Replies 2 ·
Replies
2
Views
3K
Expressing a trig function as a complex expodential (HELP)
  • · Replies 6 ·
Replies
6
Views
3K
Tidal Forces: Analyzing Comet Disruption by Planet w/ Mean Density > Comet
  • · Replies 1 ·
Replies
1
Views
3K
How High Does the Flowerpot Rise and How Long Must the Runner Accelerate?
  • · Replies 2 ·
Replies
2
Views
3K
Solve Dipole Layer Help: Electric Field Components Boundary Conditions
  • · Replies 2 ·
Replies
2
Views
4K
What acceleration does Superwoman need to catch a falling person at 1000m?
  • · Replies 2 ·
Replies
2
Views
4K
Dynamics Problem: Calculating Tension in a Pulley System with Two Masses
  • · Replies 2 ·
Replies
2
Views
2K
How to find the intensity of radiation
  • · Replies 5 ·
Replies
5
Views
20K
What is the magnitude of the average acceleration of a skier
  • · Replies 7 ·
Replies
7
Views
6K
Solving a Bowling Ball Force Problem: Finding Weight and Acceleration
  • · Replies 3 ·
Replies
3
Views
22K
Confused about Vector direction
  • · Replies 2 ·
Replies
2
Views
74K
Find Head of Vector [a,b,c] with Length 3 in Same Direction as [−3,−4,12]
  • · Replies 2 ·
Replies
2
Views
2K
Solving Electric Field Boundary Conditions Across a Dipole Layer
  • · Replies 1 ·
Replies
1
Views
7K
Calculating Time for Dog to Catch Jogger in Grade 11 Physics
  • · Replies 3 ·
Replies
3
Views
11K
Solving Physics Questions: Speed, Height & Time of Flight
  • · Replies 2 ·
Replies
2
Views
3K
Finding Practical Applications for Physics/Calculus
  • · Replies 4 ·
Replies
4
Views
3K
Will the Ball Land on the Ramp or the Plateau?
  • · Replies 2 ·
Replies
2
Views
13K
How much time elapses before the motorcycle overtakes the car?
  • · Replies 2 ·
Replies
2
Views
3K
How Do You Calculate Horizontal Force and Tension in Physics Problems?
  • · Replies 7 ·
Replies
7
Views
7K
Discover the Flow Velocity of a River with this Boat Trip Calculus Problem
  • · Replies 2 ·
Replies
2
Views
7K
Aircraft Speed with Wind: Calculating New Velocity
  • · Replies 2 ·
Replies
2
Views
2K
Homework: Stone Thrown Up 19.6m with 14.7 m/sec - Results
  • · Replies 5 ·
Replies
5
Views
6K
What Minimum Height Ensures a Marble Completes a Loop-the-Loop?
  • · Replies 3 ·
Replies
3
Views
25K
What Calculations Determine When Two Accelerating Objects Cross Paths?
  • · Replies 2 ·
Replies
2
Views
8K
How Do You Calculate Net Torque with Multiple Force-Couple Systems on a Beam?
  • · Replies 1 ·
Replies
1
Views
6K
Can P10-P12 Apply to Function Sets with Binary Operations?
  • · Replies 12 ·
Replies
12
Views
3K
Deal with tension problems in a systematic way?
  • · Replies 4 ·
Replies
4
Views
7K
Atwoods Machine - Mass Height Question
  • · Replies 2 ·
Replies
2
Views
14K
Proving Summation with Kronecker Delta and Levi-Civita
  • · Replies 2 ·
Replies
2
Views
3K
How Do I Solve These Advanced Physics Problems for My Engineering Class?
  • · Replies 9 ·
Replies
9
Views
8K
What Does Each Element in a BLAST Protein Alignment Mean?
  • · Replies 1 ·
Replies
1
Views
2K
Physics virgin is this how I do it?
  • · Replies 2 ·
Replies
2
Views
2K
Solving an Ice Cream Conundrum with Temperature Conversion and Salt
  • · Replies 2 ·
Replies
2
Views
2K
Struggling with Math 30 Pure Transformations and Inverses? Get Help Here!
  • · Replies 2 ·
Replies
2
Views
2K
3 Questions that have wracked my brain for two weeks
  • · Replies 2 ·
Replies
2
Views
14K
Domain: deceivingly simple, turns evil
  • · Replies 6 ·
Replies
6
Views
2K
Calculate Mass of Sand Grains for Equivalent Cube Surface Area - Physics Problem
  • · Replies 2 ·
Replies
2
Views
3K
Force Magnitudes, directions, gravity, etc (lost)
  • · Replies 2 ·
Replies
2
Views
10K
How many dimensions are involved in these sports motions?
  • · Replies 5 ·
Replies
5
Views
4K
Solving for Velocity: Common Mistakes and How to Get It Right Tonight
  • · Replies 15 ·
Replies
15
Views
3K
How Does Braking Force Affect Amusement Park Ride Dynamics?
  • · Replies 2 ·
Replies
2
Views
5K