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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Do relativistic effects make a star appear as small as a neutron star?
- IDOGAWACONAN
- · Replies 5 ·
Finding centroid of composite shape with triangles, square, and rectangle
- mratwi36
- · Replies 7 ·
Calculate Tension in Cables Using Pythagorus Formula
- mratwi36
- · Replies 1 ·
Algebra & Physics: When Rules Don't Apply
- madah12
- · Replies 5 ·
Solving Simple Capacitors Homework: Q, V, E
- HZXAHNLfzjSr
- · Replies 6 ·
Radius of curvature usng: M/I= σ/Y = E/R
- a5hl3yi
- · Replies 1 ·
Weight on a fulcrum style problem - Personal Interest
- c4nc3r
- · Replies 4 ·
Problem 1 on current electricity
- anshuiit
- · Replies 3 ·
How Do You Solve This Math Problem Using Substitution?
- anshuiit
- · Replies 1 ·
Help checking my velocity homework answers
- Mrnickles
- · Replies 4 ·
How do I find the surface charge of a cylinder?
- I dun get it
- · Replies 1 ·
What Is the Speed of the Elevator in a Rectilinear Pulley System?
- crazyman27
- · Replies 2 ·
Very very noob calculation verification [BEDMAS]
- seto6
- · Replies 8 ·
Electric field of nested conducting spheres with charges in nC
- roam
- · Replies 3 ·
Question on Velocity, two cars moving away from each other
- Mrnickles
- · Replies 4 ·
How Is Tension Calculated in a Pendulum String at 45 Degrees?
- carney
- · Replies 3 ·
Angular spread between two colour light (refraction)
- 8uhohs
- · Replies 3 ·
How Does Simultaneity Work in Einstein's Theory Without Equations?
- seto6
- · Replies 7 ·
Time for light to travel from tail to nose of moving spacecraft
- seto6
- · Replies 2 ·
Newton's Laws with Friction; Inclines
- rvnt
- · Replies 5 ·
Elastic/completely inelastic collision
- R.H.2010
- · Replies 1 ·
Change in Kinetic energy / Momentum
- R.H.2010
- · Replies 4 ·
Is the Area Under a Velocity-Time Curve Distance or Displacement?
- madah12
- · Replies 9 ·
How Can I Find the Coordinates of Rotated Points on a Stick?
- vonWolfehaus
- · Replies 3 ·
Vectors: Understanding and Calculating Resultant of 3 Vectors with Magnitude 10m
- shibu
- · Replies 5 ·
How do you rearrange equations to solve for a specific variable?
- LTutay
- · Replies 1 ·
About the electric field of a dipole
- norap
- · Replies 5 ·
When Does Upthrust Change?
- starwars32
- · Replies 9 ·
Finding electrostatic force and field from three charged spheres
- roam
- · Replies 8 ·
Interpreting angular momentum eigenstates as basis vectors
- Denver Dang
- · Replies 6 ·
Question regarding tension in a string.
- p75213
- · Replies 6 ·
Calculating Second Moment of Aria for Hollow Square Beams
- a5hl3yi
- · Replies 2 ·
Minimum volume of helium balloon to lift 240 kg load
- mizzy
- · Replies 5 ·
Mercury column depth when glass tube expands with temperature
- mizzy
- · Replies 8 ·
Red and violet light at glass-air interface with total internal reflection
- calgal260
- · Replies 3 ·
Graphing current vs. time in an RL circut
- Sheve
- · Replies 1 ·
Energy and Wavelength of a photon in pair production
- amme636
- · Replies 1 ·
Finding the number of turns in a tightly wound solenoid
- pat666
- · Replies 7 ·
Motion question that sounds too simple?
- Pronitron
- · Replies 1 ·
Calculating Recoil Momentum in Two-Dimensional Nuclear Decay
- rvnt
- · Replies 5 ·
What is the total energy of a simple pendulum in an accelerating frame?
- PhMichael
- · Replies 10 ·
What is the Maximum Pressure Exerted by a Block of Niobium on One of its Faces?
- Pronitron
- · Replies 2 ·
How Do I Find the Internal Resistance in this Circuit?
- arkofnoah
- · Replies 7 ·
A simple electric circuit question
- arkofnoah
- · Replies 15 ·
1 dimensional motion escape from a locked door
- madah12
- · Replies 8 ·
How Is Path Length Calculated for Light in an Optical Fiber?
- roam
- · Replies 3 ·
Why does ice form at Lake Michigan's shores but not the whole lake?
- graphicer89
- · Replies 4 ·
Derive the density relation to thermal expansion
- Ryker
- · Replies 2 ·
What angle to pull the yo-yo under so it doesn't roll?
- Ryker
- · Replies 12 ·
Calculating Voltage Across Capacitor: EMF and Internal Resistance Question"
- coffeem
- · Replies 3 ·
me with this projectile problem
- mheghan23
- · Replies 1 ·
Finding current using in a loop
- seto6
- · Replies 2 ·
Find the speed of an electron given momentum
- psilovethomas
- · Replies 1 ·
How Is the Image Size Calculated in a Concave Mirror?
- roam
- · Replies 3 ·
Relative Velocity Vector question
- rvnt
- · Replies 4 ·
Magnetic field inside a solenoid and single wire loop
- pat666
- · Replies 2 ·
Why does the slope of a PT Graph equal the VT graph?
- am2010
- · Replies 4 ·
Acceleration: Meters per second per second
- am2010
- · Replies 4 ·
N"Confirming Answers to Vector Splitting Problem
- mratwi36
- · Replies 2 ·
Rate of heat flow by conduction question
- ProgMetal
- · Replies 4 ·
Effect of Temperature on Frequency
- missileblitz
- · Replies 4 ·
How Is Torque Calculated on a Rectangular Coil in a Magnetic Field?
- coffeem
- · Replies 1 ·
Recoil velocity of atom interms of mass and energy
- NUFC
- · Replies 4 ·
Resistance of ammeter and voltmeter
- arkofnoah
- · Replies 14 ·
Solving for the Temperature of an Outer Space Station Wall
- mizzy
- · Replies 18 ·
Why Are Velocity-Distance Graphs Not Common?
- am2010
- · Replies 1 ·
Car decelerating from 50 km/h over 100 m
- german1234
- · Replies 2 ·
Magnetic field in solenoid with closely spaced copper wire
- pat666
- · Replies 2 ·
Magnetic Field Of Two Parallel Wires
- rstlr
- · Replies 6 ·
Calculating resistance of wired cubes
- Tusike
- · Replies 6 ·
Calculating the Lioness' Meal: v_{L}>v_{G}
- Petr Mugver
- · Replies 7 ·
Finding wavelength from frequency using v = fλ
- garyadamson
- · Replies 7 ·
Relativistic velocity addition with v = u = 0.01c
- seto6
- · Replies 2 ·
Acceleration of blocks on a massive pulley system
- sona1177
- · Replies 10 ·
Electrostatic Potential from a uniform line of charge?
- coffeem
- · Replies 9 ·
Quantifying Energy in an Electron-Proton System
- arkofnoah
- · Replies 2 ·
Which calculation should i use?@_@
- shakie_ija
- · Replies 1 ·
How fast is the car moving when
- sona1177
- · Replies 1 ·
Stone dropped from rising balloon at 50m height
- nirajnishad
- · Replies 4 ·
Very simply find potential where its zero question
- Brown Arrow
- · Replies 3 ·
What is the Mass of Water Left in a Calorimetry System After Steam is Added?
- mizzy
- · Replies 22 ·
Calculating Minimum Force for Turning a Barrel over a Step
- tgpnlyt7095
- · Replies 32 ·
How Is Tension Calculated in a Rope Held by Two People Leaning Back?
- haloschief
- · Replies 3 ·
Centripetal force and total force?
- paperweight11
- · Replies 4 ·
Ball colliding with pivoted pole angular momentum problem
- Lachlan1
- · Replies 2 ·
How Do You Calculate Tensile Load from Stress and Strain?
- a5hl3yi
- · Replies 2 ·
Studying Conservation of Momentum in Shooting a Bullet
- madah12
- · Replies 7 ·
Conversion from grams/liter to valume of the container
- tony69
- · Replies 4 ·
Calculating Resistivity of a Cylinder with a Hole
- Alexstre
- · Replies 1 ·
Where do you put the angle in force diagrams?
- ewolf335
- · Replies 1 ·
Can Gauss's Law Be Applied to a Charged Circular Ring?
- NOMI_2009
- · Replies 1 ·
What does the slope of a speed vs. time graph represent?
- Astar
- · Replies 3 ·
How Do You Calculate River Flow Velocity in a Kinematics Problem?
- LHC_23
- · Replies 2 ·
Calculating Resistance in a Hollow Cylinder with a Pierced Hole
- Mythian
- · Replies 1 ·
Turning Effects of Forces ( principle of moments )
- tgpnlyt7095
- · Replies 10 ·
Queston on workng out Stress in a Beam
- a5hl3yi
- · Replies 12 ·
Uncertainty formula in resistor
- jinx007
- · Replies 1 ·
How Far Back Must the Spring Be Pulled to Swing the Masses Around the Pivot?
- Mercfh
- · Replies 1 ·
A wire exerting force on two poles
- Ryker
- · Replies 10 ·