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.
What is the Acceleration of a Couch Being Pushed at an Angle with Friction?
  • · Replies 11 ·
Replies
11
Views
3K
Comparison of direction of forces
  • · Replies 1 ·
Replies
1
Views
1K
How Much Fluid Was Injected Into the Capillary?
  • · Replies 2 ·
Replies
2
Views
2K
Thermal Expansion of a metal ring
  • · Replies 5 ·
Replies
5
Views
24K
Terminal Velocity: Solving for D
  • · Replies 2 ·
Replies
2
Views
1K
How Do You Solve a Frictionless Pulley System Problem?
  • · Replies 3 ·
Replies
3
Views
5K
Newton's law to find acceleration
  • · Replies 2 ·
Replies
2
Views
2K
Where is the particle most likely to be found?
  • · Replies 25 ·
Replies
25
Views
10K
Rearranging formulas. Accelerations
  • · Replies 1 ·
Replies
1
Views
1K
Optics question - coin at the bottom of a swimming pool
  • · Replies 1 ·
Replies
1
Views
5K
Static Friction Coefficient Problems
  • · Replies 5 ·
Replies
5
Views
2K
Conducting Spheres and Their Charge
  • · Replies 2 ·
Replies
2
Views
2K
Where in a wineglass does the standing wave forms?
  • · Replies 1 ·
Replies
1
Views
4K
How to find Qmax of a capacitor in parallel RC circuit?
  • · Replies 38 ·
2
Replies
38
Views
28K
(GRADE 9 SCIENCE) Equilibrium Tension Force Help Me PLease
  • · Replies 3 ·
Replies
3
Views
2K
Calculating Electric Field and Potential of a Charged Ring Segment
  • · Replies 9 ·
Replies
9
Views
2K
Work Done by Incline Plane & Gravity on Block?
  • · Replies 3 ·
Replies
3
Views
2K
Young's fringes experiment, interference fringes
  • · Replies 9 ·
Replies
9
Views
15K
K is the proportionality constant (Hooke's law)
  • · Replies 2 ·
Replies
2
Views
3K
Capacitator Circuit and determining unknown charges voltages
  • · Replies 3 ·
Replies
3
Views
7K
Velocity and Acceleration together problem?
  • · Replies 5 ·
Replies
5
Views
2K
How Do You Calculate the Moment of Inertia?
  • · Replies 1 ·
Replies
1
Views
2K
Train Question? Uniform acceleration
  • · Replies 10 ·
Replies
10
Views
3K
Solving distance in this problem. Easy
  • · Replies 7 ·
Replies
7
Views
2K
Solve Supernova Problem: Apparent Magnitude at Max Luminosity
  • · Replies 7 ·
Replies
7
Views
2K
A strange electrical circuit - resistance calculation
  • · Replies 16 ·
Replies
16
Views
2K
Physics question involving vectors and force (from Calc II)
  • · Replies 2 ·
Replies
2
Views
2K
Analyzing the Harmonic Oscillator: Maximal Velocity and Turning Points
  • · Replies 34 ·
2
Replies
34
Views
4K
Time between sound wave displacements
  • · Replies 10 ·
Replies
10
Views
2K
Statics, beam attached to a wall, reaction forces
  • · Replies 10 ·
Replies
10
Views
29K
Electric Dipole as x l, how do I simplify this correctly?
  • · Replies 1 ·
Replies
1
Views
2K
Relative velocity/Boat & River Question
  • · Replies 18 ·
Replies
18
Views
10K
Bouncing ball exercise with time of contact with the surface given
  • · Replies 7 ·
Replies
7
Views
2K
Bernoulli's equation does not always work?
  • · Replies 3 ·
Replies
3
Views
2K
Find Distance from Screen to Slits in Double Slit Experiment
  • · Replies 1 ·
Replies
1
Views
2K
How Does Adiabatic Compression Affect Steam and Water Mixtures?
  • · Replies 7 ·
Replies
7
Views
5K
Intro to Physics problem dealing with speed and distance
  • · Replies 2 ·
Replies
2
Views
3K
How Do You Calculate Force from Acceleration and Change in Direction?
  • · Replies 11 ·
Replies
11
Views
2K
Find Moment About Point A Due to Distributed Load
  • · Replies 7 ·
Replies
7
Views
1K
Two blocks touching on a table, one with friction and the other w/out
  • · Replies 8 ·
Replies
8
Views
2K
Question regarding Rutherford's atomic model
  • · Replies 2 ·
Replies
2
Views
2K
What is the value of the dampening constant?
  • · Replies 5 ·
Replies
5
Views
2K
What Is the Correct Banking Angle for a Road Curve with No Friction?
  • · Replies 1 ·
Replies
1
Views
3K
When input voltage is high, capacitor is charging
  • · Replies 1 ·
Replies
1
Views
1K
KVL Solution for Loop A: V1-R1*I1-R2*(I1-I2)=0 vs. V1=R1*I1+R2*(I1-I2)
  • · Replies 14 ·
Replies
14
Views
3K
Kinetic energy of ball sliding down slope with electric field?
  • · Replies 13 ·
Replies
13
Views
5K
Intro to circuit analysis, Solve all the loops in this current? help
  • · Replies 1 ·
Replies
1
Views
2K
Why Does Gravity Affect Work Done in a Simple Pulley System?
  • · Replies 3 ·
Replies
3
Views
3K
Average and instantaneous velocity
  • · Replies 4 ·
Replies
4
Views
2K
How to find force of a spring given force constant and length
  • · Replies 14 ·
Replies
14
Views
3K
Why Does My Circuit Calculation Not Match the Given Solution?
  • · Replies 1 ·
Replies
1
Views
2K
How Does a Ball's Velocity and Acceleration Change on a Circular Path?
  • · Replies 5 ·
Replies
5
Views
3K
Calculating the magnetic field inside a field coil
  • · Replies 4 ·
Replies
4
Views
4K
Woman standing on a rope problem.
  • · Replies 2 ·
Replies
2
Views
2K
How to find distance using sound waves
  • · Replies 1 ·
Replies
1
Views
2K
Mechanical Energy of a system: Conceptual Problem
  • · Replies 1 ·
Replies
1
Views
11K
Help Isolate Time in this equation.
  • · Replies 2 ·
Replies
2
Views
2K
Acceleration, a kid, a sled and frictionless surface
  • · Replies 5 ·
Replies
5
Views
4K
Finding max force at bottom of a 2.8m decline swinging on a vine?
  • · Replies 2 ·
Replies
2
Views
3K
Plummer Sphere, Density from Potential
  • · Replies 2 ·
Replies
2
Views
4K
Voltage on a point charge from a stick of charge
  • · Replies 1 ·
Replies
1
Views
2K
How Is Work Calculated When Moving a Charge in an Electric Field?
  • · Replies 5 ·
Replies
5
Views
4K
How to derive pv^gamma=constant
  • · Replies 4 ·
Replies
4
Views
12K
Solving for the Height of a Toy Car on an Inclined Loop-the-Loop
  • · Replies 18 ·
Replies
18
Views
4K
Projectile Motion 2.0- Drag in RL
  • · Replies 3 ·
Replies
3
Views
2K
Force to break one, two and three white pine boards
  • · Replies 3 ·
Replies
3
Views
10K
How Do Ultrasonic Transducers Calculate Maximum Amplitude and Speed in SHM?
  • · Replies 1 ·
Replies
1
Views
3K
Calculating Total Internal Energy of a System in Thermal Equilibrium
  • · Replies 7 ·
Replies
7
Views
2K
Why Doesn't the Centering Ring Shift Immediately When Angles Change?
  • · Replies 8 ·
Replies
8
Views
4K
Calculate the voltage at a point
  • · Replies 3 ·
Replies
3
Views
2K
How Far Does the Second Fragment Travel from Point A After Explosion?
  • · Replies 6 ·
Replies
6
Views
4K
Does Tarzan's Vine Hold During His Daring Swing?
  • · Replies 3 ·
Replies
3
Views
9K
Catching Football (Projectile Motion)
  • · Replies 6 ·
Replies
6
Views
5K
Finding angle of billiard ball after collision
  • · Replies 6 ·
Replies
6
Views
6K
Momentum of ball bouncing off crossbar
  • · Replies 4 ·
Replies
4
Views
5K
Find the reactions the pin A and roller D exert on the truss
  • · Replies 2 ·
Replies
2
Views
3K
Calculating Changes in Earth-Sun Distance with Varying Sun Mass
  • · Replies 4 ·
Replies
4
Views
2K
How is the Refracting Angle of a Prism Calculated Using θ and θ/2?
  • · Replies 15 ·
Replies
15
Views
4K
Monkey Bullet Proof: Analyzing Wrong Move
  • · Replies 12 ·
Replies
12
Views
5K
Question about Terminal Velocity Lab- without motion sensor
  • · Replies 1 ·
Replies
1
Views
2K
Is My Redrawn Resistor Circuit Correct?
  • · Replies 4 ·
Replies
4
Views
2K
What is the Torque on a Crane Bar in a Fatal Accident Investigation?
  • · Replies 1 ·
Replies
1
Views
2K
Sinusoidial waves: Frequency is not dependant on speed?
  • · Replies 2 ·
Replies
2
Views
6K
How Do You Derive Particle Distributions Using the Boltzmann Factor?
  • · Replies 3 ·
Replies
3
Views
2K
Velocity-time & displacement time graphs
  • · Replies 1 ·
Replies
1
Views
2K
Mass on Bridge, Find Force of Friction when bridge is barely inclined
  • · Replies 3 ·
Replies
3
Views
2K
Finding the Resonant frequency in an LC circuit
  • · Replies 6 ·
Replies
6
Views
4K
Circuit help - resistors and batteries in a network
  • · Replies 7 ·
Replies
7
Views
4K
Finding speed at half the height given initial velocity and mass
  • · Replies 1 ·
Replies
1
Views
5K
Finding the ratio ω/ωo of an underdamped oscillator
  • · Replies 4 ·
Replies
4
Views
5K
Conservation of energy up a ramp.
  • · Replies 1 ·
Replies
1
Views
2K
Solve Rolling and Yoyo Problems: Answers Inside
  • · Replies 17 ·
Replies
17
Views
3K
Frictional Forces and Stopping Distance in Physics
  • · Replies 1 ·
Replies
1
Views
2K
True or False Questions on the Photoelectric Effect
  • · Replies 1 ·
Replies
1
Views
5K
Given electric field, find surface or charge density
  • · Replies 1 ·
Replies
1
Views
2K
Capacititive Circuit - discharging through lamp and resistor
  • · Replies 20 ·
Replies
20
Views
4K
Two Oppositely Charged Parallel Planes, Infinite In Extent
  • · Replies 22 ·
Replies
22
Views
7K
What Is the x Component of the Electric Field at a Point on the x-Axis?
  • · Replies 4 ·
Replies
4
Views
4K
What is the Correct Angle for the Net Magnetic Force?
  • · Replies 1 ·
Replies
1
Views
2K
Calculating Acceleration = what?
  • · Replies 5 ·
Replies
5
Views
2K