Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Point me in the right direction
  • jpnnngtn
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Determine the deflection angle of a pellet
  • jpnnngtn
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Electricity and resistance Question
  • PerpetuallyFrustrate
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Calculating Displacement on a Spring: Common Mistakes and Troubleshooting Tips
  • Sam
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Prove Voltage should be linear function of position
  • avs
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Transitional Equilibrium: Tension
  • Cummings
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Thermal Energy/ States of Matter- Help
  • FestiveF
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Proving Riemann Integral: m(b-a)<=int[f(x).dx]<=M(b-a)
  • dan
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Note that the total acceleration
  • Grover
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Does a Zero Determinant Always Indicate Nontrivial Solutions?
  • StephenPrivitera
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What is the formula for the hydrate?
  • gigi9
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Finding the half-life of an unknown substance
  • Sam
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6
Solving a Physics Problem: Electric Field and Net Charge on a Spherical Shell
  • jpnnngtn
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Cauchy Mean Value Theorem Proof for Continuous and Integrable Functions
  • iceman
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4
The efficiency of converting fat to mechanical
  • sb
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2
Is there a way to simplify trig functions using specific formulae?
  • garytse86
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12
Question about the Stern-Gerlach Expirement
  • frankR
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Get Feedback on Your Non-Science Homework - Ask Here!
  • Dagenais
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2
Time Needed for a Lake to Freeze Over
  • Aeonic333
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9
Calculating Position and Average Velocity of a Plane with Relative Motion
  • sb
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2
How Do You Calculate the Mass of an Ion in a Magnetic Field?
  • Clay
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2
How long does it take to boil away 0.4L water from a copper pot?
  • Sam
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4
Solving cot pi/4 and sec 5*pi/4
  • garytse86
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4
How Does the Doppler Effect Apply to Ultrasound Fetal Heart Monitoring?
  • jpnnngtn
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15
Projectiles r = (22sin(x) x 11cos(x))/9.8
  • Cummings
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Calculating Work and Power in Uniformly Accelerated Motion
  • pitbull
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4
How to Solve Momentum and Collision Problems
  • sb
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12
Why is it important to spread your legs while standing on a bumpy bus?
  • dimentia
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Calculating Light Speed and Time Dilation to Relativity
  • Dx
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8
What Is the Shortcut for Solving Ohm's Law Problems Using P=IE?
  • yakabod
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6
What frequency is monitored by the leading ship?
  • jpnnngtn
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3
Quantized angular momentum of diatomic gas molecule: Bohr Model
  • frankR
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2
Need Help With this Physics Problem (Please)
  • jpnnngtn
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2
A charged particle moves across a constant magnetic field
  • Dx
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2
What is the radius of a circle represented by the equation |z - z1|=k|z - z2|?
  • StephenPrivitera
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Wavelength nature of light: magnesium Fluoride
  • Dx
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Objects and stationary observers
  • Dx
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Calculating Magnetic Torque: Circular Wire Loop in a Uniform Field
  • Dx
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Calculating Planetary Acceleration in the Solar System | Venus, Mercury Data
  • aidan
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Magnetism:magnetitude of mag field
  • Dx
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Radioactive Decay: Calculating Age of Archaeological Sample
  • frankR
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4
Distinct powers of z=cosa*pi+isina*pi
  • StephenPrivitera
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Solve Inequalities: Find p Values for p(x^2+x) < 2x^2 + 6x +1
  • garytse86
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Do objects of different mass fall at the same rate?
  • eve_23
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Pair Production and kinetic energy
  • frankR
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Physics 101 lab help should be easy
  • dirtbird
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Wave function of a particle in a infinite well.
  • frankR
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What is the solution for the honeycomb resistor problem?
  • ermines
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Solving DC Circuit Problems: Determining Current in 8[Ω] and 4[Ω] Resistors
  • Dx
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Find All Real Solutions (problem)
  • Cod
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Quantum Physics: Probability density
  • frankR
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Electric charge and fields: uniform electric field
  • Dx
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Quantum Physics: electron within the nucleus.
  • frankR
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The Science Behind Why the Sky is Blue - Debunking Common Misconceptions
  • Dx
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What happens to the kinetic energy of a speedy proton
  • Dx
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Calculate the ratio of the radii of the orbits
  • StephenPrivitera
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Calculating Time for a Transverse Wave in a Suspended Rope with Mass and Length
  • axeeonn
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Simple problem for anyone who knows what he is doing
  • Suicidal
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Electric field and coffee maker
  • Dx
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9
Need help answering problems related to Buoyance/Buoyance Force
  • Sam
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Finding Relative Extrema of x^2y^2 with Constraint 4x^2+y^2=8
  • iceman
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What is the change in kinetic energy of the proton?
  • Dx
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How Do Electric Charge and Fields Influence Forces and Charges?
  • Dx
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How Do Temperature Changes Affect Physical Properties in Basic Physics Problems?
  • FestiveF
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Determine the kinetic energy of the emerging neutrons
  • frankR
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Solve Logarithmic Equation: log(x-1) = log(x-2) - log(x+2)
  • anil
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What Frequency Do You Hear from a Speeding Train's Whistle?
  • Dx
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I'm not asking for answers, just ideas for my science hw
  • New-Prototype
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How Does a Reverse Galilean Telescope Minify Images?
  • reverse
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Integrate 1/(1+e^x) - Is it Correct?
  • Cummings
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Revolutions per minute would a 15m diameter Ferris wheel
  • PerpetuallyFrustrate
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What Are the Key Questions About the Science of Color?
  • yakabod
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What is the Spring Constant for Question 9?
  • Cummings
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Is There an Exponential Decay in Water Levels in a Barrel?
  • Cristi
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Solving Heat Problems: Quenching a Hot Knife Blade
  • Dx
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WANTED: Formula for frictional resistance
  • clueless
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How Does Mixing Water at Different Temperatures Affect the Final Temperature?
  • Dx
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Equilibrium Problem: Solving for Unknown Masses in a Mobile
  • ratt10mm
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How Much Steam Is Needed to Heat Water and Melt Ice in a Calorimetry Experiment?
  • Aeonic333
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How Do the Laws of Thermodynamics Challenge Our Understanding of the Universe?
  • M. Gaspar
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Solving Physics Questions: Minimum Force and Friction Coefficient
  • physicshelpme
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Calculating the Time and Height of Falling Stones: A Kinematics Problem
  • Matt
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Relating linear and angular kinematics
  • kenren
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What are these 3 physics problems and can you solve them?
  • mt2568
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The Efficiency of Heat Engines: Calculating Work Output from 150J Heat Input
  • Dx
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What Are the Correct Answers to These Ideal Gas Law Problems?
  • Dx
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Calculating Atomic Mass: Solving for Pi Meson's Mass in AMU
  • Dx
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How Does an Unstable Particle Breakup Affect the Speed of Its Fragments?
  • frankR
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Prove Limit of Sequence: a, b, (an+b)1/n-1 = 0
  • KLscilevothma
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Calculate its longest and shortest diameters when its moving
  • shezill
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Calculating Deceleration in a Safety Net Jump
  • Matt
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Discovering Hose Physics: Calculating Water Speed from Nozzle Adjustment
  • mt2568
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Wave Help: Solving Standing Wave and Interference Problems
  • avs
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Electric field conductor problem
  • KLscilevothma
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The Starship Enterprise (variable acceleration problem) part II
  • frankR
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Calculating Spectrum Width with Diffraction Grating: Helpful Guide
  • Velocity
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I used Sin instead of Cos for a triangle.
  • frankR
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The Starship Enterprise (variable acceleration problem)
  • frankR
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How Does Relativity Affect the Length and Orientation of a Moving Rod?
  • frankR
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Balloons in a Car: The Science Behind Why They Move Forward When You Take Off
  • yakabod
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