Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Radius of Curvature of Convex Mirror: -17.39 cm
- Niendel
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Finding torque (vector cross product)
- vu10758
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Finding potential difference across resistor in changing magnetic field loop
- zwebb
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Work and friction for a 70 N flight bag pulled at 52° angle
- cak
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Finding the Third Force to Achieve Zero Total Torque on an Equilateral Triangle
- merced
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Work done by friction and pumping water to cloud altitude
- masteroftheuniverse
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Solve Tension in Three Blocks of Mass: m1, m2, m3
- Northstar
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Do two masses released from rest collide with equal velocities?
- xoombot
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Calculating Spring Constant with Hanging Spring and Mass
- dmolson
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Calculating Potential Energy Stored in Compressed Abductin
- needhelp83
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Calculating Center of Mass for a Group on a Boat
- cookie monsta
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Calculating Work Output, Input, and Effort
- demode
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Calculating Torque of Diver on Board: 1.82 m for 56 kg
- needhelp83
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Common Mistakes in Hologram Recording and Processing: Avoiding Poor Results
- astronomophosis
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Polarization intensity equations for light passing through filters
- Alt+F4
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Calculating EMF and Internal Resistance of a Battery in a Circuit
- Couperin
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Physics Torque Question: Calculating Maximum Climb Height on a Smooth Wall
- physics_wonderer123
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How Do You Classify Materials Based on Magnetic Susceptibility?
- Max Eilerson
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Is k Ever Negative in Hooke's Law?
- cy19861126
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Constant damping force on springsystem
- P3X-018
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Torque Required to Stop a Rotating Grinding Wheel
- needhelp83
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Why do r and F need to be perpendicular for two angles to give the same torque?
- Ronnin
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Energy Conservation of an object on an incline
- inner08
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Calculating KE of Slowest Emitted Photoelectron
- kingyof2thejring
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How Is the Direction of Gyroscope Precession Determined?
- rleung3
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Why Is Nuclear Binding Energy Proportional to the Mass Defect?
- semc
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Establish wheatstone bridge priciple by using kircchof's law
- pavel987
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What angle gives a range equal to twice the maximum height?
- pluke100
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Where can I find the specific volume of steam at 179.91 deg Celsius?
- robm
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Measuring the Distance to an Exploded Star
- sapiental
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Drawing a free body diagram on the mass
- ubiquinone
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Strain and Young's modulus problems with copper wire and suspended rod
- terainfizik
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Solve Snowball Question: Physics for Scientists and Engineers
- xoombot
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Problem understanding divergence test
- Kolahal Bhattacharya
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Centripetal Acceleration amusement park ride Question
- twotaileddemon
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Calculating Moment of Inertia of a Sphere
- Bucky
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Finding the Frictional Force between Two Blocks
- ubiquinone
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Rotational Motion around a Fixed Axis
- shaka23h
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Finding normal force, net force, and acceleration with applied force and friction
- rottentreats64
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Conservation of Angular Momentum of a Disk
- shaka23h
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Position vector of moon orbiting Earth which orbits sun
- Parallel
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Water gun fired from child sliding down 45° incline
- ch3570r
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Calculating Tire Revolutions for 101000 km Distance
- gamesandmore
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Solving for Speed in Elevator Motor Operation
- demode
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Calculating Total Energy and Vertical Height of Rolling Sphere on Incline
- kbyws37
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Simple Spring Constant Lab not adding up
- Animal
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Problems involving Newton's law
- rottentreats64
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Why doesn't a magnetic field do work on a deflected electron beam?
- artupayam
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How to Balance a See-Saw with Different Weights?
- needhelp83
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How to Calculate the Mass for Static Equilibrium of a Suspended Leg?
- needhelp83
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Figure skater spinning (rate of rotation)
- kbyws37
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How Do You Calculate the Linear Speed of a Rolling Disc?
- public_enemy720
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Solving a Motion Problem in 2 Dimensions
- rishiraj20006
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Concave mirrors - where is the object
- danago
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Why Speed Limit for Vehicle Skidding Independent of Mass
- andrewtsoi34
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Finding rope extension with skier acceleration and water resistance
- shaka23h
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Bicycle Wheel Friction: Average Torque Calculation
- kbyws37
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Calculating Liters of Water Raised From Well
- jezelee
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What is the Formula for Calculating Force in a Hydraulic System?
- starfish794
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Rotational equilibrium and tension question
- alimortensen
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Isotropic loudspeaker - calc based
- sapiental
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How Can I Maximize Marks on My Physics Assessment?
- Hybr!d
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Calculating Torque for Rotating Triangular Plate with Constant Angular Velocity
- shankur
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How Does Shear Modulus Affect the Distance Traveled by a Rubber Sole?
- physics1234
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How do I calculate error using standard deviation from repeated measurements?
- blackcat
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Bullet Drop vs. Bullet Shot: Which Reaches the Ground First?
- jklamont
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Impossible Question in CIE Physics Exam: Is It Really Unsolvable?
- skyglow1
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Pressure Problem (math error I think)
- esinn08
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Why Can't SHM Explain a Ball Falling Through Earth's Radius?
- Kolahal Bhattacharya
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Calculating Change in Volume at 8.80 km Deep
- starfish794
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Rock on Vertical Spring: Calculating Maximum Height and Potential Energy
- mbrmbrg
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Question: Investigating Energy and Forces in a Vertical Circular Motion
- ubiquinone
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Calculating forces in an object that is leaning
- Whitebread1
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Work Done by F on a Ball: Path or Displacement?
- wolovemm
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What is the force on a wire in a magnetic field?
- -_-'
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Water oscillating in a u-tube manometer with 0.1m initial displacement
- blackcat
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What is the problem with banking?
- rachelle
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Why Does Polythene Show Different Permittivity Values in Experiments?
- QuantumCrash
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What is the net force needed to accelerate a rocket sled to 1600 km/hr in 1.8 s?
- raincheck
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What is the relationship between centripetal acceleration and g-forces?
- MattsVai
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Friction Force on Inclined Surface: How It Depends on Angle
- squid
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Collision Problem and Newton's 2nd Law
- lonelywizard
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Spring gun problem without a spring constant.
- Alpha Russ Omega
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Equivalent resistance across AB in an infinite resistor network
- lingling
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What is the theoretical minimum force
- ownedbyphysics
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Why does the electric field equation E = F/q work if force depends on distance?
- danago
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How does initial velocity affect a car's stopping distance?
- public_enemy720
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Periods of Pendulums and Waves: Review Questions and Answers
- Scottlow
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Finding oscillations per minute from pendulum period
- fishingaddictr
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How Can I Determine the Mass of a Penny Using Data from 26 Envelopes?
- dcgirl16
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How to solve kinematics problems in physics?
- Streetpack
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What is the correct term for the bright point on the retina in imaging?
- John_H
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What Are the Correct Answers to This Science Quiz?
- takoma
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Apparent weight of passengers in a roller coaster
- NIZBIT
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Why does a difference in charge create a force?
- Jack123
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Rotational Dynamics of 2 Particles and 2 Rods
- cd80187
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A problem with a magnetic field and a revolving stick
- fara0815
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Where does the x² come from in the spring potential energy formula?
- Alec
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Looking for Problems in Classical Mechanics
- P3X-018
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