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.
Elastic/inelastic collision - speed?
Replies
5
Views
8K
Max Elongation of Spring in 2 Mass Spring System
Replies
10
Views
6K
Gravitational Potential Energy Problem
Replies
3
Views
3K
3-dimensional center of mass problem
Replies
1
Views
7K
Pivoting Rod and Ball - Rotational Dynamics
Replies
3
Views
6K
How Does Increasing the Mass of the Topmost Particle Affect the Center of Mass?
Replies
1
Views
4K
Work and Energy of an extreme skier
Replies
12
Views
4K
Trouble calculating the equilibrium of this object
Replies
4
Views
5K
Inertia of unequal masses on pivoted rod
Replies
3
Views
23K
Is the Gravitational Constant Always Equal to 6.67*10^-11 in Newton's Law?
Replies
1
Views
2K
Weight of Astronaut on a Centripetal Shuttle
Replies
7
Views
2K
Equilibrium at Constant Velocity
Replies
1
Views
3K
Fluid and depth of hole problem
Replies
4
Views
11K
How Does Light Reflect Between Two Mirrors Angled at 60.5 Degrees?
Replies
6
Views
4K
Vibrating a 75g Bungee Cord: Standing Wave Formation
Replies
1
Views
5K
Whats The answer and reason of this?
Replies
1
Views
2K
Vibration and Frequency Questions
Replies
3
Views
11K
Is Momentum Conserved in a Collision Between Two Charged Planets?
Replies
1
Views
3K
What is the Critical Angle for Light Passing Through a Contaminated Lake?
Replies
8
Views
4K
Angular and Tangential Variables
Replies
26
Views
5K
Kinetic Energy & Megaton Calculation HELP
Replies
1
Views
9K
How does the energy change in a capacitor with variable plate distance?
Replies
2
Views
2K
Solving Elastic Collision of Blocks with Masses 12 kg and 6.8 kg
Replies
4
Views
2K
Electric Field of Equilateral Triangle Charge Distribution
Replies
31
Views
5K
Where Will the Ball Hit the Floor of the Railcart?
Replies
6
Views
2K
How Is a Child's Swing Speed Calculated Using Energy Conservation?
Replies
3
Views
12K
Position vector relation between comet and earth
Replies
14
Views
6K
Tension in Cable: Solving Using Trig
Replies
1
Views
6K
Modify Radius of Iron for Density Accuracy
Replies
3
Views
2K
Max Electric Field on 4.3mC Ring of Charge: Radius 4cm
Replies
4
Views
2K
Overcoming friction and then some.
Replies
6
Views
3K
Solve Halfway Measures: Find KE at 7cm
Replies
6
Views
2K
Deriving the Focal Length of a Concave Mirror
Replies
4
Views
4K
How does a jumping bug affect the rotational dynamics of a uniform bar?
Replies
9
Views
4K
Using a Stroboscope to Make a Propeller Appear Stationary
Replies
1
Views
6K
Use Newtonian dynamics to find the speed at this position
Replies
2
Views
9K
What is the angular acceleration of each wheel?
Replies
6
Views
6K
Angular Variables and Tangential Variables
Replies
1
Views
6K
The space shuttle is in a 300 km-high circular orbit
Replies
7
Views
5K
How Do You Calculate the Angular Speed of a Fishing Reel?
Replies
6
Views
6K
What is the kinetic energy of the block?
Replies
6
Views
4K
How much work was done by a force to accelerate a block
Replies
2
Views
2K
Calculating Sled Speed on a Frictionless Hill: Equations for Theta and Radius
Replies
1
Views
2K
How to find the tension using the F=ma formula
Replies
2
Views
2K
How Much Work Is Done Stretching a Spring?
Replies
2
Views
2K
Calculating Force of Stifled Sneezes
Replies
6
Views
7K
Did I Calculate the Work Done Correctly on an Inclined Plane?
Replies
8
Views
2K
Multimeter measuring full-wave rectified DC current?
Replies
7
Views
10K
What is the moment of inertia and bearing friction of a rotating turbine?
Replies
6
Views
3K
Satellite period, which equation?
Replies
9
Views
19K
How to calculate theta from tantheta
Replies
5
Views
12K
How to weigh an object that's heavier than the max. weight of the spring scale
Replies
1
Views
13K
Please verify if my answers are correct.
Replies
2
Views
5K
Finding Deceleration to Avoid Collision
Replies
2
Views
6K
How Far Does the Person Move on the Ice?
Replies
5
Views
3K
Homework Problem about the Work-Energy Theorem
Replies
5
Views
3K
Find Mass of Iron (Atomic Mass 56 g/mol)
Replies
1
Views
3K
How Do You Calculate Acceleration and Retardation for a Train's Movement?
Replies
1
Views
2K
Capacitors in parallel and in series
Replies
1
Views
2K
How Long and Fast Does a Diesel Train Accelerate to Cover 6km?
Replies
5
Views
2K
How Does Friction Impact Swimmers and Drivers in Different Environments?
Replies
2
Views
3K
Wave Problem: Length & Velocity
Replies
6
Views
2K
How many trips will the box make before coming to rest?
Replies
5
Views
7K
Working of the Eye: See Virtual Images
Replies
2
Views
7K
Chain on table - calculate work
Replies
4
Views
4K
Practical applications of eigenvectors
Replies
1
Views
2K
Electric Circuit Help (Emf and Internal Resistance)
Replies
2
Views
6K
How Much Work Is Required to Push a 10 kg Steel Block Across a Table?
Replies
1
Views
22K
Troubleshooting Angle of Refraction Calculations in Triangular Glass
Replies
3
Views
2K
Conservation of Energy and Gravitation
Replies
3
Views
4K
Does the Triple Integral Formula Apply to a Point-Mass Inside a Spherical Shell?
Replies
1
Views
2K
Projectile:Launching and landing at different heights
Replies
13
Views
4K
Drag Force and Power on an inclined plane
Replies
3
Views
17K
Projectile: launching and landing from the same height help me ?
Replies
8
Views
5K
Power needed to keep car moving
Replies
4
Views
4K
How Does an Elevator's Acceleration Change Over Time?
Replies
6
Views
6K
Calculating Centre of Mass on a Board on Ice
Replies
3
Views
3K
Solving Physics Questions: Acceleration & Friction Coefficient
Replies
3
Views
2K
Hard Wave Question (Really )
Replies
3
Views
3K
How Many Oscillations Occur Before Amplitude Decays to e^-1?
Replies
14
Views
7K
What are the unknowns in a simple pendulum problem and how can they be solved?
Replies
5
Views
4K
Corner Reflector: Find Max Angle for Total Reflection
Replies
3
Views
8K
Buoyant forces with 2 liquids question
Replies
2
Views
5K
A Metal Block submereged in water from a spring scale
Replies
28
Views
13K
Physics help: rotational mechanics satellite
Replies
4
Views
4K
Understanding the Relationship Between Spring and Hook's Law
Replies
11
Views
4K
Bungee Jumping and Conservation of Energy
Replies
8
Views
13K
Max Height and Angle of Cannon in 12 m/s Ball Shot with 24J Kinetic Energy
Replies
5
Views
3K
Images from Two Parallel Mirrors
Replies
1
Views
5K
Calculating Beats and Extension for a Flutist in Perfect Tune - Flute Homework"
Replies
1
Views
10K
Analyzing Inelastic Collisions in 2-D: Solving for Final Velocity and Angle
Replies
3
Views
4K
What is the relationship between period and mass in a simple pendulum?
Replies
5
Views
4K
How Many Turns Will a Spinning Cylinder Make Before Stopping Due to Friction?
Replies
1
Views
2K
How Does Archimedes' Principle Determine the Payload of a Hot Air Balloon?
Replies
1
Views
2K
Solve Torque Q1: Find Tension & F in Picture Frame
Replies
1
Views
2K
Vibrations of a Stretched String: Finding Harmonic, Frequency & Wave Speed
Replies
1
Views
2K
Thermodynamics energy efficiency
Replies
1
Views
5K
Solve Electromagnetism Problems: Electric Field, Potential & Capacitance
Replies
1
Views
2K
Images from Two Parallel Mirrors problem
Replies
1
Views
12K
How Does the Position of G Change in Different Types of Pendulum Bobs?
Replies
2
Views
2K