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.
Calculating New Period of a Shrinking Star with Uniform Mass Distribution
  • · Replies 12 ·
Replies
12
Views
11K
Calculating Voltage Drops Across Inductors, Capacitors & Resistor
  • · Replies 2 ·
Replies
2
Views
3K
Calculating Displacement for a 2-D System
  • · Replies 2 ·
Replies
2
Views
4K
Resonance and understanding what a resonant is?
  • · Replies 6 ·
Replies
6
Views
3K
Calculating Fragment Speed in an Exploding Object
  • · Replies 4 ·
Replies
4
Views
6K
Thread Spool Resting on Table: Understanding Lever Arm and Torque
  • · Replies 3 ·
Replies
3
Views
2K
Calculating Acceleration: Basic Question on F=ma in AP Physics
  • · Replies 2 ·
Replies
2
Views
4K
Is the Path Difference Calculation Correct for Destructive Interference?
  • · Replies 8 ·
Replies
8
Views
3K
Calculating the Speed of a Ball Shot from a Spring Gun
  • · Replies 1 ·
Replies
1
Views
3K
Hanging Sign Problem: Find Angle & Distance from Ceiling
  • · Replies 1 ·
Replies
1
Views
4K
What Is the Initial Speed of a Bullet Fired into a Block?
  • · Replies 1 ·
Replies
1
Views
2K
Calculate Tension in rope pulled up a hill
  • · Replies 5 ·
Replies
5
Views
18K
Forces involving a pulley sysem.
  • · Replies 2 ·
Replies
2
Views
7K
Solve Sliding Box Problem: Force Normal, Constant Velocity & Acceleration
  • · Replies 1 ·
Replies
1
Views
3K
Conservation of momentum of a boxcar
  • · Replies 3 ·
Replies
3
Views
2K
How Far Up an Incline Does a Released Spring-Compressed Object Travel?
  • · Replies 1 ·
Replies
1
Views
4K
Calculating Vehicle Speed at Impact: The Equation and Variables
  • · Replies 2 ·
Replies
2
Views
3K
Calculating Height of a Pebbled Launched by a Catapult
  • · Replies 1 ·
Replies
1
Views
6K
Relating Momentum and Kinetic energy in collision
  • · Replies 15 ·
Replies
15
Views
16K
What are the possible directions for cross products involving three vectors?
  • · Replies 4 ·
Replies
4
Views
4K
Superman: Stop a Train in Minimum Time
  • · Replies 8 ·
Replies
8
Views
14K
How Much Work Does Friction Do on a Skateboarder Descending a Ramp?
  • · Replies 2 ·
Replies
2
Views
3K
Calculating Force Exerted on Football Tackler
  • · Replies 5 ·
Replies
5
Views
3K
How Is Work Done by Friction Calculated on a Quarter Circle Ramp?
  • · Replies 1 ·
Replies
1
Views
8K
Work Energy Problem: Calculating Distance with Friction
  • · Replies 1 ·
Replies
1
Views
3K
Calculating the Vertical Displacement of a Block After a Bullet Collision
  • · Replies 5 ·
Replies
5
Views
3K
HELP with Police + Speeding Car :velocity, acceleration, displacement
  • · Replies 3 ·
Replies
3
Views
5K
In what direction does a compass needle point?
  • · Replies 2 ·
Replies
2
Views
4K
Circular Motion of a ball Problem
  • · Replies 6 ·
Replies
6
Views
17K
What is the average force exerted on a falling diver?
  • · Replies 14 ·
Replies
14
Views
5K
Spring Constant Homework: Find Block's Speed, Compression, and Height
  • · Replies 1 ·
Replies
1
Views
3K
Calculating Speed of Cart at Positions 1, 2, and 3
  • · Replies 1 ·
Replies
1
Views
5K
Thermal Expansion of Gas in a Tank
  • · Replies 2 ·
Replies
2
Views
14K
Calculating Sliding Friction Coefficient (μ) for Car on Icy Road
  • · Replies 5 ·
Replies
5
Views
4K
Force (object is suspended connected to a block on table and pulled up)
  • · Replies 8 ·
Replies
8
Views
8K
Center of Mass: Finding the Third Particle's Position
  • · Replies 9 ·
Replies
9
Views
5K
Calculating Maximum Speed of a Child on a Swing
  • · Replies 10 ·
Replies
10
Views
3K
Tv electron and earth magnetic field
  • · Replies 3 ·
Replies
3
Views
9K
Mass Impact on Hinged Rod: Single Plane Explained
  • · Replies 3 ·
Replies
3
Views
3K
Calculating Work and Kinetic Energy in Uniform Circular Motion
  • · Replies 4 ·
Replies
4
Views
3K
Train/Car acceleration/speed problem
  • · Replies 1 ·
Replies
1
Views
11K
What Is the Change in Momentum of a Golf Ball During Impact?
  • · Replies 1 ·
Replies
1
Views
9K
How Is Spring Displacement Calculated with Zero Acceleration?
  • · Replies 1 ·
Replies
1
Views
7K
Find the x Coordinate of the Center of Mass of 3 Chocolate Blocks
  • · Replies 4 ·
Replies
4
Views
27K
Calculating Vertical Height in Ballistic Pendulum Experiment
  • · Replies 2 ·
Replies
2
Views
9K
Will the rope break when the man swings?
  • · Replies 5 ·
Replies
5
Views
4K
Solving Two Crashing Cars Problem - 11.3152 m/s
  • · Replies 5 ·
Replies
5
Views
8K
Optics, resolution problem sheet
  • · Replies 1 ·
Replies
1
Views
2K
Maximizing Roller Coaster Velocity and Height for a Safe Ride
  • · Replies 8 ·
Replies
8
Views
12K
Energy niagra falls problem water
  • · Replies 1 ·
Replies
1
Views
4K
Why is a particle at rest while accelerating?
  • · Replies 7 ·
Replies
7
Views
3K
Need Help with Work Energy Theorem Problem
  • · Replies 2 ·
Replies
2
Views
2K
Projectile Motion- SPH4U Grade 12 Physics
  • · Replies 1 ·
Replies
1
Views
12K
How Far Does a Rocket Sled Travel with Variable Acceleration?
  • · Replies 3 ·
Replies
3
Views
8K
Proving Projectile Range&Height: Angle of Elevation 30deg vs 60deg
  • · Replies 1 ·
Replies
1
Views
4K
How Does Friction Affect the Acceleration and Movement of Stacked Blocks?
  • · Replies 2 ·
Replies
2
Views
16K
Thermal energy in boiling water
  • · Replies 7 ·
Replies
7
Views
25K
What is the energy consumption at a different temperature?
  • · Replies 3 ·
Replies
3
Views
7K
Gravitational Potential Energy of 75-kg Pilot at 1.2 km Height
  • · Replies 1 ·
Replies
1
Views
2K
Energy niagra falls problem water
  • · Replies 9 ·
Replies
9
Views
7K
I'm blind when it comes to angles
  • · Replies 1 ·
Replies
1
Views
3K
Calculating Force for 5.0g Object at 11000 g's
  • · Replies 4 ·
Replies
4
Views
4K
What Angle Causes a Sphere to Begin Sliding?
  • · Replies 3 ·
Replies
3
Views
3K
Reducing Speed in Towns: Kinetic Energy, Friction, & Work
  • · Replies 1 ·
Replies
1
Views
1K
Area under a Voltage-against-Resistance graph
  • · Replies 7 ·
Replies
7
Views
14K
Calculating Distance Between Two Aircrafts Using Radar Data
  • · Replies 4 ·
Replies
4
Views
4K
What Are the Tensions Required to Steady a Piano Being Lowered by a Crane?
  • · Replies 9 ·
Replies
9
Views
17K
How Does Increasing Inclination Affect Particle Acceleration?
  • · Replies 3 ·
Replies
3
Views
3K
Solve Crane Cable Tension & Moment Around Point A | Test Question
  • · Replies 9 ·
Replies
9
Views
4K
Rutherford scattering calculation
  • · Replies 1 ·
Replies
1
Views
4K
What is the maximum reaction time to avoid hitting a deer on the road?
  • · Replies 1 ·
Replies
1
Views
4K
Calculate the athletes's velocity
  • · Replies 6 ·
Replies
6
Views
6K
Maximum Speed of Flatbed Truck & Copper Block - Correct?
  • · Replies 2 ·
Replies
2
Views
2K
Understanding the Difference Between m/s and m/s^2
  • · Replies 2 ·
Replies
2
Views
5K
Calorie Work Power - Calculate W & Days for 2000 kcal Diet
  • · Replies 2 ·
Replies
2
Views
6K
Tension in Rope for Box at Rest: 0N
  • · Replies 12 ·
Replies
12
Views
32K
The physics of a tea cup on an accelerating airplane
  • · Replies 5 ·
Replies
5
Views
3K
Power Generated by 2.5x10^10cc of Rain Falling 1000m in 1 Hour
  • · Replies 1 ·
Replies
1
Views
3K
Frictional coin sliding on turntable
  • · Replies 1 ·
Replies
1
Views
4K
Tennis Racket Dynamics: Impacts, Forces & Weight
  • · Replies 1 ·
Replies
1
Views
4K
Angular momentum of a rotating disk
  • · Replies 4 ·
Replies
4
Views
8K
Solving Collision of Billiard Balls: Speed and Direction
  • · Replies 19 ·
Replies
19
Views
9K
Frictional coin sliding on turntable
  • · Replies 5 ·
Replies
5
Views
30K
Collision of Clay Balls: Solving for Velocity and Direction
  • · Replies 13 ·
Replies
13
Views
12K
Rigid Body Dynamics: Calculating Force on Beam Supports
  • · Replies 19 ·
Replies
19
Views
9K
Conservation of energy in rotational motion
  • · Replies 5 ·
Replies
5
Views
14K
Why Is Friction Subtracted in Rotational Motion Calculations?
  • · Replies 3 ·
Replies
3
Views
3K
Kinematics problem with constant acceleration.
  • · Replies 6 ·
Replies
6
Views
4K
What is the velocity of the skateboard after Jess falls off?
  • · Replies 1 ·
Replies
1
Views
6K
Circular motion graph of a ball
  • · Replies 4 ·
Replies
4
Views
7K
Gram Molecular Mass vs Molar Mass: Explained
  • · Replies 3 ·
Replies
3
Views
3K
Newton's Second Law of Motion homework problem
  • · Replies 2 ·
Replies
2
Views
5K
Force due to wind and rolling friction
  • · Replies 6 ·
Replies
6
Views
9K
Calculating Kinetic Energy in Elastic Collisions: Hammer and Nail Problem
  • · Replies 1 ·
Replies
1
Views
4K
Solve Force and Tension for Masses in Inclined Plane System | Newton's Laws
  • · Replies 8 ·
Replies
8
Views
4K
Position when 2 objects pass each other
  • · Replies 3 ·
Replies
3
Views
3K
Packaged dropped from Hot Air Balloon
  • · Replies 3 ·
Replies
3
Views
6K
Where Is the Electric Field Zero Between Two Positive Charges?
  • · Replies 11 ·
Replies
11
Views
4K
Solve Acceleration & Apparent Weight of Child on Ferris Wheel
  • · Replies 4 ·
Replies
4
Views
3K
How Do You Calculate the Final Velocity in a Partially Elastic Collision?
  • · Replies 1 ·
Replies
1
Views
5K