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.
Calculus Help: Diff. y= (int. a=1 b=sinx of) t^3 dt & y=log base x (2x)
  • · Replies 13 ·
Replies
13
Views
3K
Where Did I Go Wrong in My Poker Dice Probability Calculation?
  • · Replies 4 ·
Replies
4
Views
4K
Verifying Sum Difference Formula Results
  • · Replies 2 ·
Replies
2
Views
31K
Velocity related to force of friction
  • · Replies 6 ·
Replies
6
Views
11K
Understanding Electron-Optic Biprism Phenomenon in Electron Microscopes
  • · Replies 5 ·
Replies
5
Views
3K
Momentum Problem: Solving a Football & Vase Collision
  • · Replies 7 ·
Replies
7
Views
7K
Solving Magnet Problems: Minimum Magnetic Field for Horizontal Northward Motion
  • · Replies 3 ·
Replies
3
Views
4K
Projectile motion - time taken to hit the ground
  • · Replies 2 ·
Replies
2
Views
3K
How to Calculate Time Required for Investment to Quadruple at 7.1% Interest
  • · Replies 6 ·
Replies
6
Views
2K
Determine Value of Trig Functions
  • · Replies 6 ·
Replies
6
Views
2K
Solving for Force with Hooke's Law: What Am I Doing Wrong?
  • · Replies 2 ·
Replies
2
Views
2K
Solving for Cotangent using Cosine and Pi
  • · Replies 16 ·
Replies
16
Views
2K
Theorems Related to Max Sums & Perimeters/Areas of Circles
  • · Replies 4 ·
Replies
4
Views
2K
Calculating Projectile Velocity in Russian Roulette: Bill Bored's Risky Game
  • · Replies 2 ·
Replies
2
Views
4K
Exam Practice Problems: Solving for Time, Speed, and Velocity
  • · Replies 5 ·
Replies
5
Views
5K
Probability of Rolling Sum > 8 w/ Dice: Calculating Probability & Avg Rolls
  • · Replies 5 ·
Replies
5
Views
8K
Really needed info. Saprkling Ice?
  • · Replies 3 ·
Replies
3
Views
2K
Kinematics Rolling motion off a cliff
  • · Replies 4 ·
Replies
4
Views
8K
Asset Market and Arrow-Debreu equilibrium
  • · Replies 2 ·
Replies
2
Views
3K
Binomial distribution smallest value
  • · Replies 2 ·
Replies
2
Views
5K
How Do You Derive the Derivative of y=sin^3(1-2x)?
  • · Replies 3 ·
Replies
3
Views
1K
Question regarding alternating current
  • · Replies 2 ·
Replies
2
Views
2K
Geometry: several problems. Try
  • · Replies 2 ·
Replies
2
Views
2K
Find velocity of puck and octopus
  • · Replies 4 ·
Replies
4
Views
3K
How transformers actually operate
  • · Replies 7 ·
Replies
7
Views
2K
Calculating Forces: Car Stopping & Box Moving
  • · Replies 12 ·
Replies
12
Views
2K
Solving Magnetism Problems: Selecting Variables for Data Table
  • · Replies 2 ·
Replies
2
Views
2K
Divergence Theorem for the Curl
  • · Replies 11 ·
Replies
11
Views
13K
Solve for a with P(0 < z < a)=0.2 | Math Help
  • · Replies 2 ·
Replies
2
Views
2K
Solve Current Formula: I=nqAv | HELP
  • · Replies 6 ·
Replies
6
Views
10K
Solving Special Relativity: Calculating Time Dilation for a Moving Observer
  • · Replies 25 ·
Replies
25
Views
3K
Spring with constant k cut in two
  • · Replies 4 ·
Replies
4
Views
9K
What is the Derivative of xlnx and Why is it 1 + lnx?
  • · Replies 24 ·
Replies
24
Views
5K
Extremely hard physics problem Help
  • · Replies 8 ·
Replies
8
Views
8K
Question on Waves: Pulse Scattering in Dispersion Medium
  • · Replies 4 ·
Replies
4
Views
2K
Maximizing Volume of a Container Using Quadratic Equations
  • · Replies 14 ·
Replies
14
Views
2K
Building Mouse Trap Cars for Physics Exams: Tips and Hints
  • · Replies 2 ·
Replies
2
Views
4K
Calculating Final Temperature: Enthalpy of Fusion vs Specific Heat
  • · Replies 4 ·
Replies
4
Views
2K
Calculating Resistance Force of a Car Driven at 76km/h with 48 kW Engine Power
  • · Replies 5 ·
Replies
5
Views
2K
Stefan-Boltzman's radiation law problem
  • · Replies 2 ·
Replies
2
Views
2K
Calc. r & Compare Centrifugal & Magnet Force
  • · Replies 6 ·
Replies
6
Views
5K
Find the maximum frequency for which the block and piston will be in contact
  • · Replies 2 ·
Replies
2
Views
2K
Solve Word Problem: Jane Running at 5.6 m/s, How High Can She Swing?
  • · Replies 2 ·
Replies
2
Views
5K
Chemistry problem solving (neutralisation)
  • · Replies 2 ·
Replies
2
Views
3K
What Interesting Math Topic Can a Grade 12 Student Teach for a Class Project?
  • · Replies 6 ·
Replies
6
Views
2K
Frequency of Train Whistles: 3.70 Hz
  • · Replies 2 ·
Replies
2
Views
2K
Proving 2^n < n! using Induction: Where to Start?
  • · Replies 3 ·
Replies
3
Views
3K
Taylor series exp. & a couple of other questions
  • · Replies 1 ·
Replies
1
Views
3K
What is the speed of a proton after moving in a uniform electric field?
  • · Replies 2 ·
Replies
2
Views
2K
Giancoli 5th Edition Solutions Ch 13 - Get Answers Now
  • · Replies 2 ·
Replies
2
Views
15K
How Do You Find Displacement, Velocity, and Acceleration in Oscillatory Motion?
  • · Replies 4 ·
Replies
4
Views
2K
Calculate b/2m for Damped Oscillations of 1.00 m Pendulum at 18.0°
  • · Replies 3 ·
Replies
3
Views
9K
Calculating Tension in a Swinging Rope: Centripetal Force Explained
  • · Replies 2 ·
Replies
2
Views
4K
How to find increasing and decreasing intervals of a biquadratic function?
  • · Replies 3 ·
Replies
3
Views
3K
What is the Probability of Drawing Certain Numbers from a Bag of Counters?
  • · Replies 2 ·
Replies
2
Views
2K
Csc theta=-17/15, cot beta=-3/4 find exact value HELP HELP HELP
  • · Replies 13 ·
Replies
13
Views
6K
How do I determine the area within 0.5 standard deviations of a given z-value?
  • · Replies 2 ·
Replies
2
Views
2K
Forced Oscillations: Period & Amplitude Calculation
  • · Replies 3 ·
Replies
3
Views
3K
Solving for Tangential Speed of a Uniform Bar
  • · Replies 4 ·
Replies
4
Views
3K
Rotational Motion/Angular Momentum
  • · Replies 2 ·
Replies
2
Views
8K
Can Freezing and Melting Water Warm a Home? Answers Here!
  • · Replies 4 ·
Replies
4
Views
2K
Does Water's Permittivity Affect the Dissolving Process of NaCl?
  • · Replies 2 ·
Replies
2
Views
3K
What force does Pete exert on the rope?
  • · Replies 6 ·
Replies
6
Views
2K
Can sum1 help me wit this question?
  • · Replies 5 ·
Replies
5
Views
3K
Calculating Acceleration in Different Positions Using Newton's 2nd Law
  • · Replies 10 ·
Replies
10
Views
3K
Calculating Force on the Bottom of a Cylinder in Fluid Physics
  • · Replies 3 ·
Replies
3
Views
2K
Exactly Not a Homework Question, but something that I can't solve
  • · Replies 10 ·
Replies
10
Views
2K
Projectile Motion: Calculating Time, Speed, and Velocity of a Thrown Dart
  • · Replies 10 ·
Replies
10
Views
2K
How Does Changing Charge Magnitude and Distance Affect Electrostatic Force?
  • · Replies 32 ·
2
Replies
32
Views
6K
How to Name a Compound with Both Double and Triple Bonds?
  • · Replies 3 ·
Replies
3
Views
3K
How to Calculate Enthalpy Using Specific Heat Capacity and Mass
  • · Replies 8 ·
Replies
8
Views
2K
Simple Harmonic Motion of a car's tires
  • · Replies 2 ·
Replies
2
Views
5K
Circumcenter poi (triangle) - confuced
  • · Replies 2 ·
Replies
2
Views
4K
Max Planck's Contributions to Physics. How does it apply to everyday life?
  • · Replies 5 ·
Replies
5
Views
10K
Fundamental Frequency: Tension Force & Mass/Length
  • · Replies 2 ·
Replies
2
Views
3K
Special triangles and Unit Circles HELP
  • · Replies 20 ·
Replies
20
Views
3K
How to Calculate Electric Potential and Work for Multiple Charges?
  • · Replies 5 ·
Replies
5
Views
3K
Why does an object have kinetic energy even when it's not moving?
  • · Replies 3 ·
Replies
3
Views
2K
Optimal Number of Passengers for Maximum Railroad Revenue
  • · Replies 4 ·
Replies
4
Views
3K
Finding the charge given distance apart + some more
  • · Replies 5 ·
Replies
5
Views
10K
Help Needed: Determining Speed of Dart After Being Fired
  • · Replies 66 ·
3
Replies
66
Views
9K
Finding Solutions for a Complex Equation
  • · Replies 12 ·
Replies
12
Views
3K
Resolving Ecuations with $\Psi$, $\vec{v}$, and $\nabla$
  • · Replies 2 ·
Replies
2
Views
2K
General Equation for an Ellipsoid
  • · Replies 2 ·
Replies
2
Views
12K
Maximizing Speed in Simple Harmonic Motion: Solving for Displacement
  • · Replies 2 ·
Replies
2
Views
1K
Answer: SHM: 45g Mass, .35m Amp - Speed Half Max Velocity
  • · Replies 2 ·
Replies
2
Views
3K
How'd this happen in my experiment?
  • · Replies 7 ·
Replies
7
Views
2K
Lens/Radius of Curvature Question
  • · Replies 4 ·
Replies
4
Views
6K
Green fuktion on the wave operator in 1 dimension
  • · Replies 8 ·
Replies
8
Views
2K
Understanding Nabla Operator with Vector A
  • · Replies 3 ·
Replies
3
Views
6K
How Can You Show That Two Ships Will Collide Using Vectors?
  • · Replies 4 ·
Replies
4
Views
3K
Solve Quadratic Equations: Find Coordinates of Turning Point
  • · Replies 7 ·
Replies
7
Views
4K
Finding x and y in a Right-Angled Triangle with Given Hypotenuse and Area
  • · Replies 6 ·
Replies
6
Views
2K
Simple Harmonic motion of particle on a table
  • · Replies 2 ·
Replies
2
Views
2K
Why Is the Moment of Inertia of a Uniform Disc 1/2MR^2?
  • · Replies 11 ·
Replies
11
Views
23K
Can I Upload Images Here? Problem Solving for Non-Native English Speakers
  • · Replies 4 ·
Replies
4
Views
2K
Resistance of n Resistors in Series & Parallel: Solve n,N & R
  • · Replies 2 ·
Replies
2
Views
4K
How Fast Must a Pion Travel to Cover 15 Meters Before Decaying?
  • · Replies 11 ·
Replies
11
Views
6K
Optimizing Distance for Swimming and Running Combination
  • · Replies 15 ·
Replies
15
Views
2K
Finding the Coefficient of Friction: Wrong Answer and Need to Fix
  • · Replies 8 ·
Replies
8
Views
2K