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.
Diving board with two supports and torque due to diver
  • D4b34r5
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Amplitude and coefficient of friction problem
  • grog
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4
What is the magnitude of the impulse imparted by a kicked ball to the foot?
  • blayman5
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Does Optical Reversibility Apply to Both Reflection and Refraction?
  • Kathi201
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What Is the Maximum Speed a Truck Can Take a Curve Without Losing Its Cargo?
  • cbrowne
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How Do the Laws of Reflection Affect Perception of Space and Image Size?
  • Kathi201
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Calculate Impulse of 0.4 kg Ball Kicked at 5m/s
  • Elbobo
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Solving Angular Acceleration of a Rod-Ball System
  • ambient_88
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Two battery current & EMF problem
  • bcjochim07
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2
Solve Thermal Physics Homework: Find Mass of Gas Leaked From Tank
  • unscientific
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8
Supersonic Jet: Mach 3 at Altitude 20,000m - Shock Wave & Boom Times
  • roflcopter
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6
What is the Coefficient of Kinetic Friction for a Box Pushed at an Angle?
  • physicsphail
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Centripetal acceleration of protons in an accelerator
  • eftalia
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6
How High Will the Unattached Ball Rise After the Collision?
  • boredaxel
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Finding force (using mass and time)
  • sarsar101
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Finding Binding Energy (B.E.) through B.E. vs Nucleon graph
  • Icetray
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5
Can You Verify the Accuracy of These Statements?
  • InSpiRatioNy
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Which Direction Is the Man Facing If Earth's Rotation Is Slowing Down?
  • phys1618
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Simple Harmonic Motion of an oscillating particle
  • maniacp08
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1
Calculating Magnification of Christmas Tree Ornament
  • Kris1120
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1
Apparent Weight of Planet Problem
  • anubis01
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Resistor & power dissipated question-
  • bcjochim07
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3
Calculating Acceleration and Time in a Cathode Ray Tube | Physics Homework Help
  • cbrowne
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2
Lense with two mediums speed of a fish in an aquarium
  • goWlfpack
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How Does the Coriolis Effect Influence a Falling Object's Path at Latitude 44?
  • giancoli
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Need help on uncertainty principle
  • s-saber148
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1
What Is the Focal Length of the Lens When the Nickel's Image Doubles in Size?
  • goWlfpack
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How Long Does It Take Earth to Orbit the Sun?
  • maddad
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4
How Do You Calculate Spring Constant with Friction Involved?
  • rileyjah
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4
What is the magnitude of the force?
  • Miss1nik2
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Transverse wave particle speeds
  • itryphysics
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Finding Spring Constant: Solving the Spring Problem
  • rileyjah
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4
Output Voltage Equation for AC Source at 90 Hz?
  • Ithryndil
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3
Need simple help with: Duality of Light and Gravity Lenses
  • giv_me_rep
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Find Final Image Location & Magnification in Lens Combination 21
  • Shackleford
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Magnitude of centripedal acceleration
  • dr2112
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8
A problem about a moving nickel coin - help/advice
  • archivlad
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Rolling Ball Height In Terms of Ho
  • tater08
  • · Replies 10 ·
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10
Spring Constant [Please Check Work]
  • BuGzlToOnl
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Calculating Impulse & Kinetic Energy of Collision
  • dbb2112
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Radial force of a rotating stick
  • bollocks748
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3
Solving Statics Rope Problem: Finding Force & Angle
  • Jstew
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Find the acceleration of each block
  • nns91
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3
Pulley problem with definite mass rope
  • Hopelessmin
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What Is the Effective Force Constant Between Two Atoms?
  • dal11
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Time for rocket shot upward to reach the ground
  • helpmedude
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2
What is Velocity at t=5s? Answer with Units
  • NukeNuke
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7
Answer:Hockey & Physics: Catching Up
  • cbrowne
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Solve 3* Problem: A Dog on a Raft - Halliday & Resnick, 8th Ed. (p.231)
  • TimH
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Tension of an Object Swinging in a Circle
  • wallace13
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Center of mass of physical pendulum
  • burianek
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Calculating the Force on a Sloped Wedge & Scale
  • blakeoman
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What Stops the Mass on a Frictionless Surface?
  • CaptainADHD
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Forced Oscillations Homework: Determine Period & Amplitude
  • Husker70
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Wave Speed Question Homework: Length, Speed & Mass
  • blindzero678
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Calculating the electric field in an electron gun
  • sylvarant
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7
Why Does a System Behave as if It Has a Larger Mass in Water Compared to Air?
  • ACE_99
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Calculating Velocity/Speed of a Lost Coin
  • cbrowne
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Year 11 motion/vector problem?
  • caitie_72
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Calculating Mass of the Moon with Apollo 11 Data
  • leyyee
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4
How Does Adding Weight Affect the Angular Speed and Energy of a Merry-Go-Round?
  • SelHype
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Calculating Final Speed of a Car with Acceleration - Homework Solution
  • cbrowne
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Finding the Distance for Enlargement with a Thin Lens
  • just.karl
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Angle of Refraction: 60 Degrees
  • itryphysics
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Metal ball sticks to putty. Where does the energy go?
  • Subrosian
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Simple Pendulum and harmonic motion
  • Husker70
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Quiz 1: Testing Your Knowledge of Force & Inertia
  • Ab e r z o m
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Help with multiple choice question (kinetic energy)
  • FisherDude
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Torque Equilibrium: Find Mass & Center of Gravity
  • Kandycat
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4
Solving Ideal Gas Q: Temps & Press at A,B,C,D
  • Crosshash
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Projectile Motion in Bigger Radius.
  • leyyee
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Finding Force Constant of Spring: 0.296 kg & 3.3 J
  • redhot209
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Solving for the Distance of Fall for 4kg Block
  • redhot209
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Get Help with 2 Questions: Solar Water Heater & Air Pressure | Expert Tips
  • ABR124
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Is the Frictional Force on a Block Pushed Against a Wall 4.9N or 7.2N?
  • hansel13
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Heat Flow Between Containers: What's True?
  • jammhawk
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Voltage at a Point: Calculate Electric Field
  • forty
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Tangential speed of a rod pivoted from one end
  • Vasili
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Net Force Questions: Calculating Frictional Force
  • jessical_x3
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A Block Slides Down an Inclined Plane
  • jumbogala
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Finding the mass of a block on an inclined plane
  • hansel13
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Calculating Water Viscosity from Flow Rate
  • JosephL
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Is Momentum Conserved in a Two-Object Collision?
  • sweedeljoseph
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Focusing on Object K: Magnification & Adjustment of Focal Length
  • haxxorboi
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Stokes' Theorem and Maxwell's Equations
  • TFM
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What is the initial velocity of a rock thrown off a 20-m high cliff?
  • hansel13
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How Long Does It Take for a Block to Slide Across Another with Applied Force?
  • Nuha99
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Ideal Gas Law and kinetic energy
  • snoopygal327
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What Is the Maximum Horizontal Force Before the Penguin Slides Off the Sled?
  • Nuha99
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What Is the Normal Force on a Person at the Top of a Ferris Wheel?
  • thekeyofheart
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Conservative force vs nonConservative force
  • jack1234
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The instantaneous velocity of a freely falling object
  • sammyj
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What is the minimum height for a ball to complete a loop and rough surface?
  • stanford1463
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An Angular Velocity Question
  • jman0391
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How Does Friction Affect Work When Moving a Board Across Different Surfaces?
  • madman143
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Calculating Volume Flow Rate for Apartment Building Faucet - 102 kPa Pressure
  • alexito01
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How to Calculate Torque and Tension in a Diving Board System?
  • fp252
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Block slides from rest from the top of a fixed frictionless sphere
  • leyyee
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Mechanics/Dynamics, rorational acceleration
  • craigman
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How Do You Calculate Angular Acceleration and Revolutions of a Stopping Wheel?
  • badula
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