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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Kinetic Energy of 0.2 kg Ball with 20 m/s Velocity
- pkossak
- · Replies 4 ·
Why does s = 1/2at² give 9 but the table shows 12?
- yu_wing_sin
- · Replies 26 ·
Critical point at origin for f(x,y)=ax^n+cy^n when Hessian determinant is zero
- pbialos
- · Replies 2 ·
Consequences of Air Impurities in Sulfur Burning
- recon
- · Replies 2 ·
Interest on principal over 5 years
- yourmom98
- · Replies 5 ·
Intersecting circles in 2D: find some coordinates
- Emieno
- · Replies 4 ·
Angle between vectors (2,1,-4) and (-3,0,1) using dot product formula
- philo51
- · Replies 4 ·
Angular Momentum Conservation: A Student on a Rotating Stool
- Wen
- · Replies 3 ·
Kinetic Energy Lost in Crumple Zones
- Physics_Student101
- · Replies 5 ·
Does x*y/(|x|+|y|) have a limit at origin and does an improper integral converge?
- pbialos
- · Replies 4 ·
How to convert Celsius to Fahrenheit
- Caesar_Rahil
- · Replies 4 ·
Setting Up DE for Spring Mass Motion
- Benny
- · Replies 2 ·
What Is the Equation of a Parabola with Vertex (-2, 3) and Focus (0, 3)?
- Dirac
- · Replies 8 ·
Using least-squares to fit an isochron for radiometric dating
- lilme
- · Replies 2 ·
Solving Ball Roll Down Ramp: 200 m/s Speed for Steel Ball
- ixbethxi
- · Replies 5 ·
Why Do Physics and Chemistry Define the 2nd Law of Thermodynamics Differently?
- asdf1
- · Replies 6 ·
Muon orbital radius in uranium atom
- shaiqbashir
- · Replies 5 ·
Chinese remainder theorem problem
- Benny
- · Replies 5 ·
Checking Boolean Algebra Solutions
- dagg3r
- · Replies 1 ·
R: How does a Moving-Coil Galvanometer Indicate Current Strength?
- phyphysics
- · Replies 3 ·
How Does the Attached Weight Affect the Angular Acceleration of a Rotating Rod?
- huskydc
- · Replies 13 ·
Time to melt ice in styrofoam cooler with given thermal conductivity
- pkossak
- · Replies 4 ·
Maximum acceleration of a Porsche on a concrete surface?
- philo51
- · Replies 4 ·
Calculating Work in Terms of Mass and Initial/Final Velocities
- marissa12
- · Replies 8 ·
Prove (x-1)/x < lnx < (x-1) using Mean Value Teorem
- iNCREDiBLE
- · Replies 2 ·
Stopping 15000 kg Truck with Friction and Gravity
- marissa12
- · Replies 2 ·
Solve Problem: Arrow Shot Horizontally Hitting Target 25m Away
- mystry4
- · Replies 2 ·
How to find the equations of the axis of the ellipse
- pbialos
- · Replies 2 ·
Rotational Collision: Mass, Radius & KE Lost
- huskydc
- · Replies 7 ·
Weight at different elevations in a tall building
- elissadi
- · Replies 6 ·
Calculating Water Output of a 2.0 hp Electric Motor
- psingh
- · Replies 6 ·
Why Do I Perform Poorly on Exams Despite Doing Well During the Term?
- rocketboy
- · Replies 6 ·
Ferris Wheel Height Function: Diameter, Location, and Time Analysis
- yourmom98
- · Replies 3 ·
Kinetic Energy of Cardinal & Baseball: Momentum Ratio
- philo51
- · Replies 5 ·
Finding and Verifying Saddle Points for f(x,y) = e^(1/x^2*y)
- pbialos
- · Replies 7 ·
What is the trial function for ODE with squared sine on the right hand side?
- Benny
- · Replies 7 ·
How Can I Succeed in My Undergraduate Calculus of Variations Class?
- Callisto
- · Replies 4 ·
Solve for three variables with only two variables?
- Shay10825
- · Replies 8 ·
If light enters a new medium perpendicularly
- michaelw
- · Replies 5 ·
Calculating Elongation of an Orange Spring
- brayrbob
- · Replies 2 ·
How do i use mathmatical symbols
- professor
- · Replies 4 ·
Proof of Combinatorial Problem: Summation from k=1 to n
- Mithal
- · Replies 2 ·
I really need an answer-Derive trig identity
- Dainy
- · Replies 2 ·
Linear programming model for two-year investment plans
- jetoso
- · Replies 2 ·
What is the paper's speed relative to the ground?
- aliciaw0
- · Replies 5 ·
Solve Kinematics Fireman Question: 28.7m, 49.5°, 39.6m/s
- pkossak
- · Replies 4 ·
Power series for ln(1+x²) and convergence of a series
- gokugreene
- · Replies 12 ·
Calculating Change in Length of Rubber Tube
- huskydc
- · Replies 7 ·
He atoms move faster than all of the Ne atoms
- pkossak
- · Replies 4 ·
Does Increasing Coil Turns Decrease Magnetic Flux Density?
- temujin
- · Replies 2 ·
How can I calculate Planck's constant?
- DaltonGR
- · Replies 2 ·
Calculating Probability of Division Manning Decrease
- iNCREDiBLE
- · Replies 2 ·
Find an expression for the acceleration
- aliciaw0
- · Replies 7 ·
The Tire's Velocity at the Embankment's Top: 2.8 m/s
- huskydc
- · Replies 2 ·
Kinetic friction of crate being pulled
- jp04
- · Replies 2 ·
Angle Calculation in Inelastic Collisions
- hhh79bigo
- · Replies 10 ·
How Much Water Flows Through a 6mm Hole in a Tank Per Second?
- badman
- · Replies 5 ·
Finding Density Constant for Part (c) of Question
- WY
- · Replies 2 ·
How much would a hydrogen atom be deflected in the Stern-Gerlach experiment?
- matrix5
- · Replies 5 ·
Rates of Change Sliding Ladder Application
- Dirac
- · Replies 14 ·
Magnetic flux and direction of induced current
- michaelw
- · Replies 4 ·
Calculating Force of Beam on Support at A
- huskydc
- · Replies 4 ·
How Is Static Friction Affecting the Boy and the Crate's Movement?
- marissa12
- · Replies 2 ·
How to Calculate Acceleration in a System with Two Blocks and a Pulley
- huskydc
- · Replies 2 ·
Finding the approach to a momentum collision problem
- Kchu
- · Replies 5 ·
Heat Energy: 30,000kg Snow > 1mL Water
- skrewd1
- · Replies 4 ·
Some Physic question on kinematics, mechanics that i couldn't solve
- Wen
- · Replies 19 ·
Wavelength in water, violet brightness, total internal reflection, and polarization
- michaelw
- · Replies 7 ·
Finding initial velocity of a cannonball fired at 45 degrees over 100 meters
- MisterNi
- · Replies 6 ·
Blood Transfusion: Calculating Height of Bag
- ussrasu
- · Replies 5 ·
How to find the determinant of a 3×3 matrix
- Spunky_Dunky
- · Replies 7 ·
What is the maximum horizontal force
- pkossak
- · Replies 11 ·
Conservation of angular momentum in sport
- lektor
- · Replies 2 ·
What Wavelength Is Expected from Scattered Gamma Rays at 60 Degrees?
- shaiqbashir
- · Replies 2 ·
Buoyancy and hydraulics problems with boat and balloon
- PhysicsNoob88
- · Replies 18 ·
Force of recoil on machine gun
- frozen7
- · Replies 2 ·
Projectile motion arrow question
- Lalasushi
- · Replies 2 ·
Can Different Species Forming Relationships Be Viewed as Metasystem Transitions?
- dkrelle
- · Replies 2 ·
How Does Heat Transfer Affect Entropy Between the Sun and Earth?
- pkossak
- · Replies 3 ·
Show a sequence of amounts are a geometric series
- yourmom98
- · Replies 4 ·
Understanding Variation of Parameters in Linear Differential Equations
- EvLer
- · Replies 2 ·
Epsilon-Delta Proof for f(x)=1/(1-||x||) Continuity and Unboundedness
- pbialos
- · Replies 2 ·
Least time for two blocks to move 5 m without top block sliding
- psingh
- · Replies 5 ·
When will they pass each other>
- rlmurra2
- · Replies 2 ·
Can Charged Particles Emit Radiation in a Dielectric Medium Faster Than Light?
- shaiqbashir
- · Replies 2 ·
Calculating Action from a Resonant LC Circuit
- shaiqbashir
- · Replies 2 ·
Is Integration the inverse of differentiation?
- rampalli_aravind
- · Replies 11 ·
Proving Exactness of a Differential Form with Poincaré's Lemma
- jeanf
- · Replies 2 ·
Solving a Problem: Find Mass of Box, Given Two Wire Support Beam Data
- pkossak
- · Replies 3 ·
How to choose a physics project topic
- Rohin.T.Narayan
- · Replies 3 ·
Two questions involving linear independence
- kant
- · Replies 11 ·
What is the speed of a train based on observed changes in frequency?
- pkossak
- · Replies 3 ·
What Would Happen if Sun's Gravity Was Turned Off?
- rlmurra2
- · Replies 2 ·
What is the tension in the cable car's cable?
- marissa12
- · Replies 3 ·
Calculating Force Exerted by Water Pumped at a Given Rate and Velocity
- hhh79bigo
- · Replies 3 ·
How Is Time a Variable in Physics?
- Shanos
- · Replies 3 ·
How Does Changing Pipe Radius Affect Pressure in Laminar Flow?
- ussrasu
- · Replies 6 ·
How Do You Solve This Multivariable Limit Problem?
- Hessam
- · Replies 2 ·
Find X-Intercept of y=atan(b(x-c))+d in Radians
- yourmom98
- · Replies 12 ·
Calculating Molarity of Sulfuric Acid Solution
- ~angel~
- · Replies 6 ·