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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Calculate the voltmeter reading for this circuit with 2 sources and 2 resistors
- songoku
- · Replies 5 ·
What is the net force on the current loop?
- Meow12
- · Replies 8 ·
Different forms of Stokes' theorem
- MatinSAR
- · Replies 3 ·
Wooden sphere rolling on a double metal track
- Hak
- · Replies 97 ·
Mass on a spring from equilibrium
- mancity
- · Replies 1 ·
Problem understanding solution of a question about a hydrogen-filled balloon
- TahirMaqbool
- · Replies 24 ·
Why body A has greater acceleration?
- Iamconfused123
- · Replies 13 ·
Calculus Problem: Blowing Up a Spherical Balloon
- Idan9988
- · Replies 3 ·
The phenomenon of the ruler trick
- Anonim2831
- · Replies 7 ·
Finding the correct star radius
- wanwa
- · Replies 3 ·
Projectile Motion Question (Envelope of trajectories) query
- laser
- · Replies 42 ·
Viscosity by Falling Sphere Equations
- xenoidmaster
- · Replies 2 ·
Parallel Axis Theorem Not Working
- laser
- · Replies 28 ·
Arrange bulbs in descending order of brightness
- Jahnavi
- · Replies 3 ·
Force field in spherical polar coordinates
- MatinSAR
- · Replies 20 ·
Actual Working of Weighing Machine (Normal vs gravitational force)
- Physicsnb
- · Replies 36 ·
Which Spring Constants to Use for Magnet Oscillation Experiment?
- Boileddog
- · Replies 1 ·
Finding force and acceleration in connected blocks system
- srnixo
- · Replies 58 ·
Matrices: a normal M, a projection Q, Hermitian transpose of product
- nomadreid
- · Replies 1 ·
Does a signal called "EN" stand for something special in this circuit?
- zenterix
- · Replies 1 ·
How Does Dimensionality Affect Phonon Polarizations?
- Kyuubi
- · Replies 1 ·
Finding angle in carnival swing problem
- star33
- · Replies 5 ·
A charge inside a ring, small oscillation
- ermia
- · Replies 2 ·
Importance/Use of Gauss' Law and Ampere's Circuital Law
- Aurelius120
- · Replies 30 ·
What are the voltages generated from this current source?
- zenterix
- · Replies 2 ·
Problem on Differential Pulleys
- nirmalya1basu
- · Replies 11 ·
Plot ##i_A## vs ##v_A## characteristics for this nonlinear network
- zenterix
- · Replies 7 ·
Distributed weight of inclined beam.
- Mohmmad Maaitah
- · Replies 11 ·
What is the angle of static equilibrium for a ladder on ice?
- engineerr
- · Replies 3 ·
Calculate the resistance to add in parallel to balance this bridge circuit
- Saibot
- · Replies 6 ·
Find the amount of work done against gravity in moving a 150kg rocket
- sdfsfasdfasf
- · Replies 4 ·
What is the most effective nozzle size and water speed for maximum thrust?
- user079622
- · Replies 28 ·
Finding electric potential of an infinite line charge at z axis
- physics1000
- · Replies 64 ·
Seeking advice on "simple" pendulum problem
- some bloke
- · Replies 27 ·
Minimum film thickness for interference fringes from Hecht's Optics
- phymath7
- · Replies 11 ·
Frequency of oscillations given 3 springs at angles ##\frac{2\pi}{3}##
- curious_mind
- · Replies 16 ·
What is the power per square meter of a sun on a planet?
- GlubbyJug
- · Replies 22 ·
Find the Retarding Force due to Eddy Currents
- icemanhv
- · Replies 5 ·
Block on slope. Different answers using energy vs forces
- laser
- · Replies 5 ·
Why are the forces on torque tension and not the weight of the mass?
- j04015
- · Replies 7 ·
Speed of ball on pendulum with Mechanical Energy
- VaitVhat52
- · Replies 9 ·
Energy loss in pulley-spring system with slow release
- Aurelius120
- · Replies 24 ·
Varying fluid (density) in a cylinder rolling along an inclined plane
- mostafaelsan2005
- · Replies 130 ·
Torque before slipping in a refrigerator
- mancity
- · Replies 3 ·
Friction between tractor tyres and the ground
- laser
- · Replies 4 ·
Does a massless string cause a normal force when attached to a wall?
- laser
- · Replies 2 ·
Vertical Velocity Graph versus Time on a Slope
- mancity
- · Replies 2 ·
A particle moving in a parabolic path in the ##x-y## plane
- brotherbobby
- · Replies 40 ·
Finding current of circular (toroidal) solenoid
- Grandpa04
- · Replies 4 ·
Problem involving space elevators
- pepos04
- · Replies 19 ·
Calculate a radius of a circle on a screen
- Lotto
- · Replies 3 ·
Circular motion of a rollercoaster car on a loop-the-loop
- Jolene
- · Replies 14 ·
Maximum voltage in the primary circuit of a transformer
- lorenz0
- · Replies 2 ·
How Do You Solve for Final Velocities in Elastic Collisions?
- pineapplebanana
- · Replies 20 ·
How can the coefficient of friction change? Does it?
- Ameer Bux
- · Replies 8 ·
Understanding Energy Loss of 2 Joules in Circuits with Changing Capacitance
- Touuka
- · Replies 10 ·
Why neglect the change of volume of water in a heat problem
- laser
- · Replies 8 ·
Alpha particle close to the nucleus
- Juli
- · Replies 3 ·
Thermo Final Review - specific heat for ideal gas
- dwsky
- · Replies 2 ·
Can conservation of angular momentum apply when mass M increases?
- laser
- · Replies 4 ·
Does Mechanical Energy of a Planet Change in an Elliptical Orbit?
- mancity
- · Replies 1 ·
Flow rate experiment not producing same results as the Hagen-Poiseuille law?
- mahdis
- · Replies 17 ·
Two stars orbit their common center of mass
- mancity
- · Replies 2 ·
Point charge with very thin metal sheet along a spherical surface
- pepos04
- · Replies 21 ·
Pushing a block against the wall of an elevator that is accelerating
- MatinSAR
- · Replies 42 ·
Analytical mechanics- working with Lagrangian and holonomic constraints
- ronniegertman
- · Replies 4 ·
Question on height of a jump in terms of Power (from WPE chapter, JEE level)
- annjee212
- · Replies 5 ·
Angular momentum of rotating hoop
- BroPro
- · Replies 2 ·
What is the maximum current in a RL circuit using V=IR?
- skibidi
- · Replies 13 ·
Why does the derivative of fluid velocity equal zero in this non-inertial frame problem?
- tracker890 Source h
- · Replies 37 ·
Calculate the spring constant of oscillating mass on a spring colliding with a wall
- Aurelius120
- · Replies 31 ·
Why can we move the spring with constant speed when we apply a force?
- Lotto
- · Replies 29 ·
Pearson HW23, The Little Prince
- Enginearingmylimit
- · Replies 2 ·
Relation between Mutual information and Expectation Values
- blueinfinity
- · Replies 2 ·
Write boolean expression describing this circuit
- zenterix
- · Replies 4 ·
Sinusoidal Radiation Statements (T/F)
- o79
- · Replies 2 ·
Q: In a relative non-inertial reference frame, the fluid velocity is zero?
- tracker890 Source h
- · Replies 3 ·
Spring Problem Involving Variables and Constants Only
- Argonaut
- · Replies 3 ·
How would we define a value for acceleration if only the direction is changing?
- mancity
- · Replies 2 ·
Show that the Poiseuille field of flow is rotational
- Ben2
- · Replies 6 ·
Make 2 launchers that shoot a straw with clay at the end
- Jhonny boy
- · Replies 3 ·
What can I add to a Taekwondo body protector scoring systeme to be more stable?
- Anas Benti
- · Replies 1 ·
Is the Final Velocity of a Fly Impacted by an Elephant's Mass?
- cxza
- · Replies 28 ·
Torque in a parallel combination of springs
- Aurelius120
- · Replies 8 ·
Why isn't (1/2)(mv₀)² = 1/2(M+m)gh valid for conservation of energy?
- j04015
- · Replies 9 ·
Find the linear speed of the particle when system rotates about axis
- Aurelius120
- · Replies 6 ·
Find the equation of state of each gas
- curious_mind
- · Replies 4 ·
Scarf modelled as a pulley system - questioning the mass ratio
- laser
- · Replies 3 ·
Challenging problem about an impact with a smooth frictionless surface
- pepos04
- · Replies 55 ·
Energy of a water tank with compressed air
- davidpele
- · Replies 5 ·
Inflating a Balloon (elastic balloon vs. paper balloon)
- lily001
- · Replies 8 ·
Why tension and weight resolution gives different results in equilibrium
- laser
- · Replies 4 ·
The biomechanics of elbow extension
- thegoose
- · Replies 1 ·
Minimum force required to keep two blocks from not falling
- nafisanazlee
- · Replies 4 ·
Derivation of angular velocity using the unit circle
- jnuz73hbn
- · Replies 5 ·
Optimal boom attachment point to prevent crane overturning
- eitan77
- · Replies 23 ·
How Does Induced Current Change with Loop Acceleration Through a Magnetic Field?
- ChuFta
- · Replies 8 ·
T-shaped pendulum total mechanical energy
- Nate
- · Replies 8 ·
Conservation of Energy with Gravitational Potential Energy
- zachary570
- · Replies 6 ·
Why combining two 12V batteries in parallel gives 12V, not 24V
- Maghraby
- · Replies 16 ·