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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Determine the type of measurement by classification
- Miristeri
- · Replies 2 ·
Finding tension in ropes supporting a hanging mass
- litelboi
- · Replies 21 ·
Potential in spherical shells
- per persson
- · Replies 2 ·
Internal Resistance Affect the Balancing Length in a Potentiometer?
- tellmesomething
- · Replies 12 ·
Robot starts to overturn when reaching to pick up a load
- crystallizedyogurt
- · Replies 2 ·
Distance rolled of sphere vs cylinder with same m, r, and v
- I_Try_Math
- · Replies 5 ·
Determine energy required to stop rolling mass
- I_Try_Math
- · Replies 10 ·
Required force for sphere start rolling
- eyeweyew
- · Replies 2 ·
Applying conservation of string to a pulley system
- mancity
- · Replies 5 ·
Finding the reflected wave amplitude at a string junction
- Ark236
- · Replies 8 ·
Tension in a rope hanging between 2 trees
- Manish_529
- · Replies 24 ·
How do I calculate the Tension in a rope going over a smooth pulley?
- carlcla
- · Replies 19 ·
Liquid rocket engine excercise
- mirko9670
- · Replies 1 ·
Connecting a number of EMF sources in a circle to form a circuit
- tellmesomething
- · Replies 9 ·
Friction force on a ball falling through a body of water
- NikolasLund
- · Replies 9 ·
Is the Trigonometric Analysis of Conveyor Belt Forces Correct?
- Aariz
- · Replies 6 ·
Gradient and Divergence in spherical coordinates
- physicss
- · Replies 3 ·
Making a vehicle go straight on carpet
- Kiblur
- · Replies 8 ·
A Braking System with Spikes for Cars
- Alateo
- · Replies 4 ·
Torque on a Circular Current Loop under a Misaligned Magnetic Field
- domephilis
- · Replies 1 ·
Rod with Current on Rails in Magnetic Field
- domephilis
- · Replies 12 ·
A problem in applying Kirchhoff's Voltage Law
- Patrick Herp
- · Replies 1 ·
Body attached to a block by a spring, shaped like an inclined plane
- kekpillangok
- · Replies 1 ·
Ball revolving around a massive disc and a cube placed at centre
- someone_2156
- · Replies 1 ·
Finding the intermediate height of a ball in terms of its maximum height
- SelzerRS
- · Replies 3 ·
Time taken for a planet to collide with the Sun
- someone_2156
- · Replies 10 ·
Why is there no current flow in the middle branch? (Circuits problem)
- phantomvommand
- · Replies 8 ·
Why does temperature coefficient of resistance use R(t) not R₀ in the denominator?
- tellmesomething
- · Replies 6 ·
Find the density of surface charges at the boundary of two conductors with different resistivities
- tellmesomething
- · Replies 6 ·
Trying to tie two runners of different speeds over a race
- josephn
- · Replies 30 ·
Can Energy Conservation Solve the Angular Velocity Problem?
- nafisanazlee
- · Replies 6 ·
How do we represent a triangle wave for input voltage in this circuit?
- zenterix
- · Replies 3 ·
Why is Radial Acceleration Ignored for a Rotating Board?
- momo1111
- · Replies 9 ·
Concept of different accelerations on rotations of rigid bodies
- cyap
- · Replies 10 ·
Relativistic Decay and Separation Between Moving Nuclei A and B
- alex_ts
- · Replies 1 ·
Looking for observed rotation periods of various Foucault pendulums at different latitudes
- RandomDude1234
- · Replies 6 ·
Textbook 'The Physics of Waves': Varying Force Amplitude
- brettng
- · Replies 3 ·
Expression for magnitude of the constant friction force
- Racoon5
- · Replies 7 ·
Energy conservation equation to find equation for final velocity
- Racoon5
- · Replies 4 ·
How Many Eggs to Turn a 40lb Flywheel in a Vacuum?
- gibsnax
- · Replies 10 ·
Effect of rim width on a frisbee's stability and range
- Anjish
- · Replies 8 ·
Rocket + Connected Body Dynamics problem
- Mohammad Ishmas
- · Replies 47 ·
Quantum Mechanics Boundary conditions
- MaxJ
- · Replies 3 ·
Uncertainty in particle position
- MaxJ
- · Replies 3 ·
Derivation of reflection and transmission probability formulas
- MaxJ
- · Replies 2 ·
Why is the direction of kinetic/static friction up a ramp?
- Heisenberg7
- · Replies 7 ·
Heated gas pushing a mercury column out of a cylinder
- highschoboy004
- · Replies 10 ·
Temperature of two subsystems at equilibrium
- f3sicA_A
- · Replies 7 ·
Doppler effect for bat echolocation with moving source and observer
- pot
- · Replies 12 ·
Momentum transfer from laser reflecting inside a cubic box
- dark_matter_is_neat
- · Replies 4 ·
Explain why applying different forces to objects of different masses result in different accelerations
- helloword365
- · Replies 9 ·
Incandescent Bulb - suitable approximation for voltage-current curve
- RodionGork
- · Replies 2 ·
Diophantine equations and physics
- Weavyside
- · Replies 1 ·
Underground cables faulty point detected
- tellmesomething
- · Replies 24 ·
Motion of an electron inside the cavity of a charged sphere
- Zayan
- · Replies 5 ·
How to solve this driven RLC circuit?
- zenterix
- · Replies 13 ·
Electrostatics and current problem with 3 metallic balls
- tellmesomething
- · Replies 29 ·
Driven torsional oscillator equation setup
- zenterix
- · Replies 5 ·
Find the mass of odium for both solid and liquid state
- hraghav
- · Replies 9 ·
Find the final temperature of the combined honorite and odium?
- hraghav
- · Replies 5 ·
Mechanisms Involved When Charging a Battery
- tellmesomething
- · Replies 10 ·
Find final temp of 2 substances once they have reached equilibrium
- hraghav
- · Replies 6 ·
What is the meaning of the intercept of a particular solution to damped oscillator?
- zenterix
- · Replies 7 ·
Magnetic Field of an infinite current-carrying wire at a point
- BuggyWungos
- · Replies 5 ·
To what extent does this system behave as a pendulum?
- l4teLearner
- · Replies 1 ·
Force on a block placed on a rotating disc, calculated in different reference frames
- Aurelius120
- · Replies 25 ·
How does a simple circuit work?
- tellmesomething
- · Replies 12 ·
Why is current constant through a resistor?
- BuggyWungos
- · Replies 11 ·
Did I Misuse the Parallel Axis Theorem for Polar Moment of Inertia?
- Usaid3112
- · Replies 2 ·
Why is the current in a conductor equal to zero when not connected to a circuit?
- tellmesomething
- · Replies 13 ·
Why does electric potential energy increase if you move against the field?
- BuggyWungos
- · Replies 6 ·
Determining angular velocity of weight attached to a cord and cylinder
- I_Try_Math
- · Replies 23 ·
Electromagnetic force on a positively charged particle
- Sat-P
- · Replies 3 ·
Why would this be accelerating positively?
- helloword365
- · Replies 6 ·
Calculating the Relative COG of Two Masses
- slobberingant
- · Replies 20 ·
Pistons placed on top of communicating vessels
- highschoboy004
- · Replies 20 ·
Is Linear Momentum Conserved in This Case? (sliding box hits a floor tile)
- Heisenberg7
- · Replies 2 ·
Image velocity from a moving mirror when object moves faster
- Zayan
- · Replies 5 ·
Calculating moment of inertia for automobile engine torque
- I_Try_Math
- · Replies 6 ·
Confusion over acceleration of gravity as positive/negative
- helloworld2941
- · Replies 10 ·
A cylinder has two sides containing gas and water separately
- highschoboy004
- · Replies 4 ·
Finding the angular velocity of a pendulum
- I_Try_Math
- · Replies 3 ·
Number of bright fringes given by diffraction grating on a screen
- lorenz0
- · Replies 6 ·
How Many Lines Per Millimeter Does the Diffraction Grating Have?
- Ericv_91
- · Replies 5 ·
What’s gone wrong with my derivation of the Lorentz Factor?
- ryan2
- · Replies 7 ·
Single slit diffraction: brightness ratio and 6th dark fringe distance
- hraghav
- · Replies 5 ·
Coulomb's law to find electric field for charge density function
- Su6had1p
- · Replies 11 ·
Finding smallest distance for constructive and destructive interference
- hraghav
- · Replies 5 ·
Find smallest value of y for constructive interference
- hraghav
- · Replies 3 ·
EMF induced in moving rod in B-field, why is "L" length of wire frame?
- phantomvommand
- · Replies 4 ·
Why is vertical displacement second order in horizontal displacement for coupled oscillator?
- zenterix
- · Replies 8 ·
Induced EMF due to a moving magnet
- phantomvommand
- · Replies 7 ·
How to Apply Derivatives in Physics Problems?
- Heisenberg7
- · Replies 9 ·
How to calculate pressure when two forces are exerted
- physics565
- · Replies 23 ·
Equivalent resistance of this 6-sided circuit
- Sat-P
- · Replies 59 ·
Contact force and electrostatic force in an electrostatic press
- tellmesomething
- · Replies 14 ·
Find the change in the time required, if acceleration increases by the differential amount 'da'
- Heisenberg7
- · Replies 7 ·
Solving for potential using surface charge density of a sphere
- BuggyWungos
- · Replies 3 ·