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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Will the Water Level Decrease When Ice Cubes Melt?
- tronter
- · Replies 1 ·
Motion of a Sphere: No Friction vs With Friction
- chaoseverlasting
- · Replies 3 ·
Calculating RMS Current from I(t)=3+4sinwt
- chaoseverlasting
- · Replies 2 ·
Determining speed experimentally
- TOD
- · Replies 17 ·
Calculating Tension in a Hanging Rope: To Add or Not to Add?
- Fusilli_Jerry89
- · Replies 3 ·
Car Braking Distance at Different Initial Speeds
- Mike667
- · Replies 16 ·
Mass per Unit Length of Violin Strings
- e(ho0n3
- · Replies 1 ·
Calculating Velocity Change of a 300g Ball with Impulse
- StellarZ
- · Replies 13 ·
Using physics in accident investigation
- physicsbum
- · Replies 14 ·
If friction cancels force why is work done when kinetic energy doesn't change
- Fusilli_Jerry89
- · Replies 1 ·
Quick force on the fulcrum of a lever?
- linuxux
- · Replies 6 ·
What are the frequency and maximum velocity of a wheel rolling without slipping?
- stinlin
- · Replies 2 ·
3-dimensional parametric equations
- JolleJ
- · Replies 8 ·
Two glass plates - next dark fringe?
- lizzyb
- · Replies 1 ·
Resolution of a 3 m dish at 4 GHz
- wakejosh
- · Replies 1 ·
What does 0.1 arc-seconds resolution mean for the Hubble telescope?
- wakejosh
- · Replies 1 ·
Pressure (force) from wind on a building
- differcult
- · Replies 8 ·
Is my calculation for the speed of light through water correct?
- wakejosh
- · Replies 1 ·
How does the Doppler shift affect hydrogen's emission spectrum?
- Bradracer18
- · Replies 5 ·
Information/calculations about radars
- Large dwarf
- · Replies 1 ·
Calculating Center of Mass for a System of Objects with Unequal Masses
- linuxux
- · Replies 7 ·
What is the entropy increase per kilogram
- bpw91284
- · Replies 5 ·
Minimum Distance Between Two Sound Sources
- e(ho0n3
- · Replies 2 ·
Difference between current and voltage
- iamnotageek
- · Replies 3 ·
What Is Johnny's De Broglie Wavelength Just Before Splashing?
- SamTsui86
- · Replies 2 ·
Spring compression when a 2 kg block collides with a 5 kg block
- r16
- · Replies 2 ·
Calculating Frictional Force and Speed in a Kinematics Bar Problem
- drivet
- · Replies 10 ·
Work to move spacecraft between Mars orbits
- doopokko
- · Replies 3 ·
A question on centripetal acceleration
- hubexcube
- · Replies 1 ·
Power needed for 85kg man to cycle 850m up a 5.2° incline at 15.6 m/s
- Fusilli_Jerry89
- · Replies 1 ·
What Are Some Unique Examples of Newton's Laws in Action?
- morgan82
- · Replies 1 ·
Final Speed of a Proton Accelerated by Potential Difference V: Velocity Formula
- koujidaisuki76
- · Replies 4 ·
Wavelength of light and interference pattern
- abeltyukov
- · Replies 6 ·
How Fast Is the Spaceship Traveling Relative to Earth in Terms of c?
- map7s
- · Replies 1 ·
How many bright rings are produced in Newton's Rings experiment?
- threewingedfury
- · Replies 3 ·
Wavelength and frequency of vibrating string and open tube
- PhysicsJoe101
- · Replies 3 ·
How Does Thruster Positioning Affect Rotational Motion in AUVs?
- e-dard
- · Replies 24 ·
How Does Firing Shells Affect the Speed of a Recoiling Car?
- neelakash
- · Replies 1 ·
Solving d²θ/dt² + (g/L)θ = g
- rcw110131
- · Replies 6 ·
Tension in a string along with a Pseudo force
- anantchowdhary
- · Replies 4 ·
Father pushing child on swing problem
- rcw110131
- · Replies 3 ·
Very simple double slit question.
- linuxux
- · Replies 2 ·
Room Thermal Energy Calculation
- iceman_ch
- · Replies 6 ·
Transmission through constructive interference
- threewingedfury
- · Replies 2 ·
How Does Electron Kinetic Energy Affect Barrier Penetration Probability?
- r-dizzel
- · Replies 1 ·
Finding individual-level data for Cox regression analysis
- AlmostFamous
- · Replies 3 ·
Angular velocity and period of a disc rotating about point on circumference
- rcw110131
- · Replies 2 ·
How Do You Isolate 'g' in the Equation s=ut+1/2at^2?
- Large dwarf
- · Replies 1 ·
Finding error in spring constant from Hooke's law
- Firepanda
- · Replies 9 ·
How to calculate velocity in the y-direction
- stringa
- · Replies 4 ·
Discover the Focal Length of a Convex Mirror Using Object and Image Distance
- Bk8907
- · Replies 1 ·
Our class has only completed ~50% of the Physics B Curriculum
- AznBoi
- · Replies 6 ·
How much sweat is lost if 630W is dissipated as heat?
- miava
- · Replies 1 ·
How did Archimedes solve the crown problem?
- W24JBLV
- · Replies 2 ·
Problem on conservation of energy/momentum
- siddharthmishra19
- · Replies 14 ·
How Does the Index of Refraction Affect Light Speed in Different Materials?
- Bk8907
- · Replies 5 ·
Springs in series and parallel : Problem for U
- sss_1981
- · Replies 4 ·
Which Mirrors and Lenses Produce Virtual Images?
- Bk8907
- · Replies 2 ·
Elementary physics of falling bodies.
- Randomer Guy
- · Replies 10 ·
Block floating at the oil-water interface
- W24JBLV
- · Replies 11 ·
What is the final velocity of a falling body?
- Randomer Guy
- · Replies 10 ·
I'm lost on this one, i think its a torque question.
- linuxux
- · Replies 2 ·
Confusion about the Work-Energy Theorem
- AznBoi
- · Replies 2 ·
Can Arctan Still Determine Satellite Antenna Direction on a Curved Earth?
- ttback
- · Replies 5 ·
Kinetic energy of space probe problem
- chouZ
- · Replies 2 ·
Simple Harmonic Motion and equilibrium problem
- robbondo
- · Replies 5 ·
Torque on a Massful Beam with Load
- amdma2003
- · Replies 4 ·
How Does Adding Mass Affect the Angular Speed of a Spinning Disk?
- Wurz
- · Replies 8 ·
How Does Adding More Springs Affect Extension in Hooke's Law Experiments?
- thang08
- · Replies 4 ·
Energy/Work/Efficiency/Metabolic Rate Question
- miava
- · Replies 2 ·
How Can a Cricketer's Bowling Technique Influence Projectile Motion?
- NASSAfellow
- · Replies 2 ·
Understanding Right Hand Rules - Namely w/ parallel wires
- orb
- · Replies 8 ·
How do I calculate the electric potential
- nroquet
- · Replies 5 ·
Show that the potential energy of a simple pendulum is proportional
- xXmarkXx
- · Replies 5 ·
Calculating Half-life of 6He through Beta Minus Decay
- physicsstudent14
- · Replies 2 ·
Questions about units and conversion
- AznBoi
- · Replies 3 ·
Quick Questions on Fluids: Pressure, Density, and Hydraulic Lifts Explained
- future_vet
- · Replies 5 ·
Can a 1000N push move a 100kg box up a 20° ramp with friction?
- skittlez411
- · Replies 11 ·
Implications of general relativity for the structure of space and time
- peps
- · Replies 1 ·
04_39 Buoyant forces and densities
- AznBoi
- · Replies 1 ·
Dropping a Ball in a Moving Bus
- bagheera
- · Replies 2 ·
*Serious* Questions about Voltage / PE
- kaotak
- · Replies 3 ·
Pi/2 Translational Difference in y(x,t) Equations
- Helicobacter
- · Replies 3 ·
Rolling Hoop - Angular Momentum
- cardioid
- · Replies 5 ·
Temperature Change and heat loss
- William Bush
- · Replies 9 ·
How Do You Calculate Average Speed from Uniform Acceleration Data?
- ImsoFly
- · Replies 7 ·
Trigonometric identity forced oscillations
- Gyroscope
- · Replies 1 ·
Calculate the resolution in linear travel of the tape
- polyperson
- · Replies 1 ·
Coaxial resistors, coaxial capacitors and self-energy of charged sphere
- Ave Kar
- · Replies 1 ·
What is the ratio of the largest slit width to the smallest?
- Mitchtwitchita
- · Replies 5 ·
A GRAVITATIONAL POTENTIAL ENERGY questions
- rootX
- · Replies 9 ·
A capacitor-like system, is this really a cap?
- joemok
- · Replies 5 ·
Solving the B(1-r)e^x Equation: B-re^x or Be^x-Bre^x?
- Lee
- · Replies 1 ·
Electron and positron annihilation
- Psi-String
- · Replies 2 ·
Understanding Power Sources: Solving a Circuit Question with V=IR Method
- shibme
- · Replies 2 ·
Work done in an Isobaric expansion
- iceman_ch
- · Replies 3 ·
What is the Constant Speed of an Elevator with a 14kW Motor and 1100kg Mass?
- A.J.
- · Replies 3 ·
What are the forces acting on a particle in equilibrium on an inclined plane?
- jernobyl
- · Replies 6 ·
What Is the Spring Stiffness Constant in This Car Collision Scenario?
- skittlez411
- · Replies 3 ·