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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Gravitational force and constants
- juggalomike
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Coefficient friction of a book resting on a block
- Sirsh
- · Replies 4 ·
Work done by force field F = c(iy - jx) along different paths
- joriarty
- · Replies 4 ·
Electrical resistance of a paraboloid.
- BlackWyvern
- · Replies 1 ·
Why doesn't kinetic energy drop to zero when potential energy is maximum?
- imortaltoad
- · Replies 1 ·
What is the Effect of Mass on Earth's Angular Velocity?
- temaire
- · Replies 1 ·
Construct a possible graph for the x velocity versus time, v_x(t)
- 1man
- · Replies 1 ·
Solving Thevenin Equivalents: Techniques and Steps
- Trentonx
- · Replies 1 ·
Mass/escape velocity of a comet
- Quincy
- · Replies 1 ·
Solving a Difficult Force Problem with Multiple Unknowns
- Tony Zalles
- · Replies 6 ·
How Do You Calculate the Average Rotational Speed of a CD in Radians per Second?
- crybllrd
- · Replies 2 ·
Does the number of turns on a loop affect the current or magnetic field?
- anonymousphys
- · Replies 3 ·
Question on finding the frequency of a sound wave
- theskyisgreen
- · Replies 1 ·
If you know the wavelength of light emitted by a laser how can you know
- kashiark
- · Replies 7 ·
Electricity: Which globe uses most energy?
- Astar
- · Replies 1 ·
Infared WAvelengths in transition through energy levels
- skibum143
- · Replies 2 ·
Force on loop of wire pulled through magnetic field
- brianfast
- · Replies 3 ·
Gravitational field strength unit
- xdeanna
- · Replies 5 ·
Destructive Interference Question
- adhoward24
- · Replies 1 ·
Kinetic to potential energy ratio for orbiting satellite
- Princess19
- · Replies 25 ·
What Wavelength Does a 100mW Laser Deliver 3.5x10^17 Photons in One Second?
- Jethom18
- · Replies 1 ·
The 6.9 N weight is in equilibrium under the
- KB94
- · Replies 1 ·
To find speed of a plane when position of radar is given
- hermy
- · Replies 7 ·
Find Magnetic Field Using Torque Equation (t=nBIAcos)
- centripitacal
- · Replies 4 ·
Normal force on a 3.80 kg block in equilibrium on a 38.4° incline
- KB94
- · Replies 3 ·
Calculating the Flight and Landing of a Golf Ball Hit with an Inclined Force
- the pro
- · Replies 3 ·
Spring constant and oscillation frequency for mass on incline
- huybinhs
- · Replies 5 ·
Max static friction witout mass or normal force?
- Gersty
- · Replies 9 ·
Simple force/energy/work problem
- xecure
- · Replies 7 ·
What was the acceleration of the rocket?
- fcb
- · Replies 5 ·
What is the total work required to drive a screw into a block of wood?
- smhippe
- · Replies 2 ·
Cannon fired upward at 25 m/s reaches 50 m, finding g
- BTurner90
- · Replies 1 ·
If a skier jumps of the peak of a straight slope, when does it intersect?
- RoganSarine
- · Replies 17 ·
Capacitance of a landing plane in a thunderstorm
- sethman737
- · Replies 1 ·
Configuring the restoring force for a pendulum equation
- outdoorjunkie
- · Replies 4 ·
Finding Tension in a Frictionless Ladder
- Daniiel
- · Replies 28 ·
Interference pattern formed by an air wedge.
- semc
- · Replies 3 ·
Equation of uniformly accelerated motion
- fcb
- · Replies 12 ·
Work - energy theorem and conservation of momentum question
- hermy
- · Replies 5 ·
The potential energy of the molecules
- fawk3s
- · Replies 1 ·
How to Find the Resultant Vector of this Quadrilateral ?
- 5416339
- · Replies 5 ·
Finding the third force that balances two given forces
- dwagz
- · Replies 3 ·
How do forces explain the passenger seat object's motion when the car hits a wall?
- womatama
- · Replies 1 ·
Photon Output of 100kW FM Radio Transmitter
- phy_freak
- · Replies 3 ·
Rotating Conducting Cylinder in B - Induced Voltage
- xcvxcvvc
- · Replies 3 ·
Horizontal range of a projectile
- dink87522
- · Replies 1 ·
Calculating Heat Absorbed When Melting 15g Lead
- Mathys
- · Replies 2 ·
Angular Velocity Calc: Cross-Shape Object, KE, MOI, Energy
- jscherf92
- · Replies 1 ·
Constant angular acceleration of a rotating wheel
- jscherf92
- · Replies 1 ·
Calculating Doppler Shift with Ship Sonar and Moving Targets
- jackleyt
- · Replies 2 ·
Rearranging Coulomb's law to make A the subject
- missyfit
- · Replies 10 ·
Angular momentum in projectile motion of rock of mass
- mybrohshi5
- · Replies 1 ·
Finding equivalent resistance and current in parallel circuits
- dmsgo89
- · Replies 2 ·
Calculating Force, Work & Energy on Box Dragged at Angle
- cperfetto91
- · Replies 15 ·
Understanding Torque in a 2D Plane
- mybrohshi5
- · Replies 5 ·
How to Determine Current Direction in a Multi-Battery Circuit?
- Sky.Anthony
- · Replies 1 ·
Projectile Motion Review Work Check
- jacksonpeeble
- · Replies 1 ·
Calculating Relative Motion on a Moving Sidewalk
- SgtSniper90
- · Replies 1 ·
Can Pair Production Occur if Positron and Electron Have the Same Rest Energy?
- Kiwithepike
- · Replies 4 ·
Coriolis force on rotating plane
- Ayotte
- · Replies 2 ·
Find the Coefficient of Kinetic Friction for a 40N Case
- Mar17
- · Replies 2 ·
Centripetal Force and Tangential Velocity
- x0ji11y
- · Replies 1 ·
Oscillations Spring constant Newton's second law
- bfpri
- · Replies 1 ·
Average force when 20N stone falls 5m and embeds 5cm
- lorik
- · Replies 1 ·
How Do You Calculate Force for a Marble to Complete a Loop in a Rollercoaster?
- Breanne
- · Replies 4 ·
Moderating Neutrons: Calculating Kf/Ki Ratio
- Tanahagae
- · Replies 5 ·
How Much Potential Energy Does Water at the Top of a 200ft Waterfall Possess?
- Windseaker
- · Replies 6 ·
Forces on 3m cantilever held by steel cable at 30°
- smhippe
- · Replies 1 ·
Why does sunlight stop illuminating part of the tank bottom at 28°?
- semc
- · Replies 2 ·
Finding speaker frequency from destructive interference distance and sound speed
- adhoward24
- · Replies 1 ·
Calculating Secondary Amps in Step Up Transformer Problem
- sp1974
- · Replies 7 ·
Time Constant / Capacitor Charge Time
- Ascetic Anchorite
- · Replies 19 ·
PERE'S LAW AND THE FREQUENCY OF ELECTRON BEAM IMPACTS ON METAL
- promiseskept
- · Replies 3 ·
Frequency of sound coming from speakers
- Revvi
- · Replies 1 ·
Calculating Self-Inductance and Capacitance in Parallel Plate Transmission Lines
- malindenmoyer
- · Replies 1 ·
What is the force that the car exerts on the driver?
- smh745
- · Replies 1 ·
Field strength between two wires
- Maria H
- · Replies 1 ·
Coupled oscillators - mode and mode co-ordinates
- joriarty
- · Replies 1 ·
Work-Kinetic Energy Theorem applied to a Spring Force
- biker.josh07
- · Replies 4 ·
How Should the Spring Constant k Affect the Efficiency of a Catapult?
- pcgmks
- · Replies 1 ·
Calculate impulse force in inelastic collision
- Point Conception
- · Replies 1 ·
I don't understand this dynamics question?
- Cokebottle
- · Replies 2 ·
What Happens to Interference Patterns When an Air Wedge is Reversed?
- caliver
- · Replies 1 ·
How do you determine the sign of force components in statics?
- TreePerson
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Transverse wave through a wire, and tension.
- jmm5872
- · Replies 4 ·
How Do You Choose the Right Lens for Photographing a Building at 490m?
- Maria H
- · Replies 3 ·
Frictionproblem Yoyo on a horizontal plane.
- center o bass
- · Replies 11 ·
Ideas for 3D modeling a force diagram
- nmegabyte
- · Replies 8 ·
Time constants for RC and RL circuits with resistors in series and parallel
- jayz618
- · Replies 4 ·
Finding Bob's average density from weight in air and water
- jumbogala
- · Replies 4 ·
Physics multiple choice questions
- thisisfreaky
- · Replies 1 ·
Nuclear Model - Expression for Total Energy [Modern Physics]
- twotaileddemon
- · Replies 2 ·
Constant acceleration proof, dv/dt=a
- Beamsbox
- · Replies 5 ·
Is the Linear Attenuation Coefficient Proportional to Energy?
- timmo567
- · Replies 1 ·
Minimum Length for Safe 1000kg Plane Landing on 2000kg Barge
- sean-820
- · Replies 1 ·
What is the Speed of Galaxies by Redshift?
- iamthemeg
- · Replies 1 ·
Moment of inertia of a rolling can on an incline
- Paymemoney
- · Replies 13 ·
Biceps force needed to counteract 200 N load at 0.3 m from elbow
- mwoods18
- · Replies 1 ·
Kibble problem (linear motion chap. 2)
- levilevi
- · Replies 5 ·
Magnetic field at midpoint between opposite-current parallel wires
- SamTsui86
- · Replies 2 ·