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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A powerboat, starting from rest, maintains a constant acceleration
- hey123a
- · Replies 6 ·
Particle explosion with relative velocity: conservation of momentum
- risingabove
- · Replies 5 ·
Understanding Motion Diagrams: Negative vs. Positive Acceleration
- Nitrate
- · Replies 2 ·
Internal energy and expanding gas
- tomahawk1985
- · Replies 1 ·
Periodically Dampened Oscillator
- Squire1514
- · Replies 1 ·
Finding tension in a pulley system with two masses
- Gbarretto23
- · Replies 1 ·
A Marble Rolls Around a Circular Cone - Diagram
- tg22542
- · Replies 5 ·
Electrical Energy Dissipation Across Resistors
- Yosty22
- · Replies 5 ·
Energy math question - Energy to melt lake ice sheet
- courtneywetts
- · Replies 20 ·
SIMPLE and somewhat fun questions I need answers for
- noobphysicist
- · Replies 3 ·
Tangent Lines/Instaneous Velocity
- pebbles3
- · Replies 8 ·
Force required to maintain Equilibrium
- member 392791
- · Replies 16 ·
Friction on a casing on a metal ring
- Victarion
- · Replies 4 ·
How Do You Calculate Average Speed in a River with a Current?
- physicsnobrain
- · Replies 22 ·
How to calculate tension in a rope?
- BEECHBOY707
- · Replies 1 ·
Energy spent by motor in a period
- bznm
- · Replies 27 ·
Fluid pressure question in US units
- freshman2013
- · Replies 1 ·
Can You Solve This Physics Problem About a Cannon, a Cliff, and a Moving Ship?
- Cassomophone
- · Replies 9 ·
Determine force angles so that acceleration is least
- MrMoose
- · Replies 4 ·
Finding trajectory equations for a projectile launched at angle θ
- majinsock
- · Replies 1 ·
When does a ball reach maximum height and what is that height?
- lulu234
- · Replies 10 ·
Calculating Average Velocity from Acceleration?
- SonnyBoy
- · Replies 1 ·
Phys Chem Heating water with electric current
- speny83
- · Replies 1 ·
Electric heater heat absorbed and power rating with unit conversion
- KevinO
- · Replies 4 ·
Calculate zenith distance given latitude and time of year?
- EzrealAsItGets
- · Replies 1 ·
Doppler effect with 2 sound sources
- papanik
- · Replies 3 ·
Velocity to acceleration then conversion from km/h to m/s2 confusion
- survivorboiii
- · Replies 15 ·
Draw a diagram of all the forces acting on block A.
- spriteboost
- · Replies 3 ·
0N/C Electric Field at center of equilateral Triangle
- Painguy
- · Replies 2 ·
Centripetal Acceleration of amusement ride
- hsphysics2
- · Replies 9 ·
Particle projected vertically at 30 m/s: finding times at 40 m and 15 m/s
- risingabove
- · Replies 3 ·
Distance a satellite travels in one day at 6.2 Earth radii
- astru025
- · Replies 11 ·
When to use linear vs quadratic drag force in motion problems?
- iScience
- · Replies 6 ·
Vector/Relative Motion Questions
- zak.hja
- · Replies 1 ·
Calculating an Intercept Course for a Coast Guard Speedboat
- lazyykid
- · Replies 2 ·
Gravitational force on 450 kg satellite at 6.5 Earth radii
- astru025
- · Replies 16 ·
Free fall, hit the target, projectile problem
- annakwon
- · Replies 1 ·
Finding Height With Projectile Motion
- Slovan
- · Replies 10 ·
How to Distribute Weight on a Table with Four Legs?
- aaron94116
- · Replies 2 ·
Running and Location/Distance Question
- physicsnobrain
- · Replies 19 ·
Vector / Relative Motion Problem
- jambliduo
- · Replies 1 ·
Kirk's spaceship: acceleration time needed to reach outpost 13
- fogvajarash
- · Replies 10 ·
Mastering the Cup-and-Ball Physics Problem in First Semester Kinematics Class
- scozzy
- · Replies 2 ·
Capacitor charge in series and parallel circuit
- Joshb60796
- · Replies 3 ·
Can you check this? - Charges and Forces
- Albeaver
- · Replies 1 ·
Spring constant in mass spring combinations
- mrcotton
- · Replies 2 ·
Work done on condensing steam in a piston
- mettw
- · Replies 3 ·
Electrostatics problem - accelerations of charged beads
- OckhamsHammer
- · Replies 3 ·
Mass attached to lower of 2 identical springs
- bfusco
- · Replies 7 ·
Flux calculation using Gauss’s Theorem
- manayay
- · Replies 1 ·
Finding A Vector Position Function For Projectile Motionh
- Bashyboy
- · Replies 20 ·
Possible Physics Projects Involving Photosynthesis and Respiration?
- chipotleaway
- · Replies 1 ·
Dropping Package Homework: Newton's 2nd Law & Position in Flight
- Bashyboy
- · Replies 2 ·
Michelson interferometer average power derivation
- leroyjenkens
- · Replies 4 ·
Golf ball hit into window 50m away and 50m high
- physicsnobrain
- · Replies 4 ·
Calculating Charge on a Parallel Plate Capacitor with Changing Distance
- jaydnul
- · Replies 2 ·
Projectile Motion Calculation: Finding the Landing Distance of a Launched Object
- physicsnobrain
- · Replies 4 ·
Finding launch angle from horizontal distance and initial height
- Marven345
- · Replies 9 ·
Arrow shot at 61° from 15m height: position and landing displacement
- golbez22
- · Replies 7 ·
Checking Speed/Velocity Porblem Answers
- Medgirl314
- · Replies 7 ·
Kinematics in 1D. I with setting up the question
- hey123a
- · Replies 4 ·
Electric potential from two charges at different distances
- irivce
- · Replies 3 ·
What is the Gravitational Force on Two Satellites Circling Earth?
- astru025
- · Replies 1 ·
How Do You Calculate Electric Field at Multiple Points Between Two Charges?
- danish1991
- · Replies 8 ·
Reynolds number and drag coefficient of a cylinder
- ngc2024
- · Replies 4 ·
How Does Gauss's Law Apply to a Uniformly Charged Sphere?
- yaro99
- · Replies 1 ·
How Does Block 1's Acceleration Compare to Block 2's in a Dual Pulley System?
- ashrafi
- · Replies 1 ·
Initial velocity of home run hit
- Kr.m.h.
- · Replies 1 ·
Constant velocity and turning around
- fogvajarash
- · Replies 16 ·
A simple rotational motion question
- nil1996
- · Replies 6 ·
Checking Speed and Velocity Problems
- Medgirl314
- · Replies 2 ·
Find angular momentum, energy, and distance of closest approach
- oddjobmj
- · Replies 30 ·
How Do I Solve Kirchhoff's Loop Rule Problem in MATLAB?
- lee_sarah76
- · Replies 6 ·
What Is the Net Electric Flux Through Each Closed Surface?
- yaro99
- · Replies 1 ·
Easy 3d Moment with Couples question, Scalar approach.
- Willjeezy
- · Replies 4 ·
Atwood Machine: Acceleration of m1
- thatguy101
- · Replies 1 ·
How Is Velocity and Acceleration Affected as a Carousel Slows Down?
- studentofphy
- · Replies 3 ·
Moment of a pole of unknown height
- PensNAS
- · Replies 6 ·
Stone thrown horizontally from 45 m building landing 64 m away
- xtrubambinoxpr
- · Replies 11 ·
Bernoulli, Gauge pressure in hose?
- kogai
- · Replies 4 ·
Simple? Motion Equation Problems
- harujina
- · Replies 4 ·
What is the work done by a spring on a block at various positions?
- shawn14parker
- · Replies 6 ·
How Do You Calculate the Numerical Aperture of This Optical System?
- Aelo
- · Replies 10 ·
Finding dimensions and SI units of constants in x=α+(2/3)βt^(3/2)
- studentofphy
- · Replies 7 ·
How Do Velocity and Acceleration Vectors Behave in Projectile Motion?
- physicsnobrain
- · Replies 6 ·
Find Mass M1 Given Acceleration, Angle, and Friction
- thatguy101
- · Replies 7 ·
Why is the electric flux through a cube with perpendicular field zero?
- Tautomer22
- · Replies 2 ·
One-dimensional dynamics question
- Ascendant78
- · Replies 2 ·
Find F2 on a particle given velocity vector and F1 vector
- MrMoose
- · Replies 7 ·
Figure out how far up the incline of the hill the box slides.
- jumbogala
- · Replies 2 ·
Calculating Electric Flux in a Nonuniform Field: A Cubic Box Example
- kopinator
- · Replies 4 ·
Initial Speed and Projectile Motion
- Rubber Ducky
- · Replies 4 ·
Drag on a marble shot through water
- oneamp
- · Replies 6 ·
Depth of field with aperture stop selection for a portrait lens
- Aelo
- · Replies 1 ·
Dart hitting falling monkey between two buildings
- annakwon
- · Replies 3 ·
Can You Calculate the Landing Point of a Ball on a Roof?
- jutman1776
- · Replies 5 ·
Mass on inclined plane, string has mass
- deekin
- · Replies 5 ·
What does the angular momentum quantum number l represent?
- Astronomer1
- · Replies 2 ·
How Do Friction and Normal Force Act on a Rod at an Angle?
- nil1996
- · Replies 1 ·