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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A 300 MHz plane wave propagating through a non-conducting medium
- pallab
- · Replies 2 ·
Overdamped oscillator solution as hyperbolic function?
- Vitani11
- · Replies 4 ·
Approximating number of collisions in canal ray tube
- timetraveller123
- · Replies 23 ·
Calculation of the least value of PD needed to produce x-rays
- Asmaa Mohammad
- · Replies 11 ·
Final velocities with the inclusion of air resistance
- sohjau
- · Replies 4 ·
Kinetic energy in ocean current
- pinkfishegg
- · Replies 2 ·
Finding battery EMF and internal resistance from two load resistances
- lb20
- · Replies 11 ·
Why does elastic potential energy need the factor of 1/2?
- elijugh
- · Replies 12 ·
How to use the coefficient of kinetic friction?
- Hannah
- · Replies 36 ·
Velocity of bullet before hitting a pendulum
- kinalee8
- · Replies 11 ·
Solving for C in terms of L: Find C in RLC Circuit for 950kHz Station
- Poetria
- · Replies 5 ·
Rolling cylinder or slipping cylinder reaches bottom first?
- vcsharp2003
- · Replies 5 ·
Thermodynamics Gas Mixture - Dew Point Temperature
- Reefy
- · Replies 4 ·
Magnetic field on a solenoid: Y-intercept
- SetepenSeth
- · Replies 1 ·
How Do You Calculate the Magnetic Moment and Torque of a Rectangular Loop?
- superslow991
- · Replies 3 ·
Why is the Gibbs Free energy equal to this:
- grandpa2390
- · Replies 24 ·
Understanding Magnetic Interactions in Current Carrying Wires
- jlmccart03
- · Replies 1 ·
Identifying Magnetic Interactions
- jlmccart03
- · Replies 9 ·
Calculating mass of the horizontal leg of a L shaped lever
- ridiculoid
- · Replies 9 ·
Voltage reflections in coaxial cable transmission line
- shivik89
- · Replies 2 ·
Acceleration of the object, distance, kinematic coefficient
- MagdaStan
- · Replies 2 ·
E-field between two equipotential surfaces
- lonelypancreas
- · Replies 3 ·
Current direction in two coils for net magnetic field of 4.10 µT
- superslow991
- · Replies 3 ·
Atwood with Sliding mass and real pulley
- SadDan
- · Replies 4 ·
Finding mass and length on a balanced beam with uncentered fulcrum
- EthanVandals
- · Replies 13 ·
Moment of Inertia Ratio for Disk and Ring with Point Mass
- EthanVandals
- · Replies 14 ·
Energy to accelerate an 1kg object to 0.9965c?
- Robert23
- · Replies 8 ·
Magnetic force on triangular loop of wire
- rmiller70015
- · Replies 3 ·
Constructive interference with sound -- word problem
- late347
- · Replies 15 ·
GRE Entropy Question: Problem 21 in Attached File - Solution Debate
- Silviu
- · Replies 10 ·
Mass-radius relation of a white dwarf - calculating radius
- Ryaners
- · Replies 7 ·
Comparing weights underwater, on beach, and mountain
- tomwilliam2
- · Replies 11 ·
Torque in a spool of thread for 3 cases
- ehf
- · Replies 2 ·
What Exhaust Pipe Diameter is Needed for a Given Exhaust Speed?
- pizics
- · Replies 1 ·
Derive KE of rotating ring and disk
- yosimba2000
- · Replies 6 ·
Magnetic force on current carrying wire
- superslow991
- · Replies 6 ·
Disk colliding with rod: angular momentum with unknown disk radius
- tennisgirl92
- · Replies 10 ·
Confusion with formulas for wavefunctions
- Cocoleia
- · Replies 5 ·
Oscillation Problem -- Why does my way not work?
- katha
- · Replies 5 ·
What fraction of its energy does accelerating proton shed?
- Ahlibaba
- · Replies 1 ·
Relationship between period and time in oscillators
- Vitani11
- · Replies 3 ·
Electricity -- Effect of heating a thermistor in this circuit
- Kajan thana
- · Replies 14 ·
Rotating rod returning to its initial position
- Helphelphelp
- · Replies 5 ·
How do I calculate the moment of inertia for a uniform bar with attached balls?
- jackthehat
- · Replies 5 ·
Energy conservation of ice problem
- paulxu11
- · Replies 3 ·
Contact force of block on a wall
- dodosenpai
- · Replies 5 ·
Relativistic Collision - Momentum and Energy
- Eve Torchic
- · Replies 7 ·
Finding force to bring a 10 kg system to rest in 5 seconds
- EthanVandals
- · Replies 8 ·
What is the exhaust pipe diameter required for the given exhaust speed?
- paulxu11
- · Replies 5 ·
How Do You Calculate the Final Speed of a Bullet-Block System?
- Rijad Hadzic
- · Replies 13 ·
Examples of conversion of gravitational PE to heat energy?
- vcsharp2003
- · Replies 2 ·
Potential Divider Circuits (resistor + LED)
- Jimmy87
- · Replies 6 ·
How Is Work Calculated with a Nonconstant Force?
- Rijad Hadzic
- · Replies 10 ·
What is the trajectory of a projectile and how is it related to parabolas?
- quicksilver123
- · Replies 21 ·
How much energy does the force of gravity apply to a bullet?
- Hilmy atha
- · Replies 9 ·
Block hung from vertical spring
- Rijad Hadzic
- · Replies 12 ·
Proving the period of a pendulum
- GetSchwifty
- · Replies 8 ·
Equation of Motion for a Disk inside a Rotating Ring
- Angelo Niforatos
- · Replies 5 ·
2 Conveyors with different speeds
- omarmorocci
- · Replies 7 ·
Calculating Relative Velocity of Spaceships Using GRE Relativity Equations
- Silviu
- · Replies 6 ·
Relation of attenuation and swamping
- Faiq
- · Replies 5 ·
The force LRO experiences due to moons gravity?
- Rijad Hadzic
- · Replies 3 ·
Conceptual question on polarization
- Yashbhatt
- · Replies 3 ·
Finding the optical power of a contact lens
- ilovejava
- · Replies 1 ·
When does a converging lens produce an image twice the object size?
- FelaKuti
- · Replies 2 ·
Point of Maximal Tension for Vertical Circular Motion
- vijayram
- · Replies 5 ·
Rod struck by clay: inelastic and elastic collisions
- Truman I
- · Replies 10 ·
Energy required for rocket to reach escape velocity from orbit
- Jared
- · Replies 5 ·
Rank in order, from largest to smallest, the resistance (eq)
- Ali Zain
- · Replies 2 ·
Placing object between 2 spherical mirrors
- ilovejava
- · Replies 3 ·
Tension in string when ball is at the top of a circle
- Rijad Hadzic
- · Replies 7 ·
Calculating the EMF in the coil while the field is changing
- Ly444999
- · Replies 6 ·
What is the deceleration of the ball?
- Hussain
- · Replies 5 ·
What is the work done by friction in a sliding and rolling ring?
- vijayram
- · Replies 17 ·
How Does Inserting a Dielectric Affect Capacitance and Potential?
- Arman777
- · Replies 11 ·
Charge density required to create an electric field
- Cepterus
- · Replies 2 ·
A box slides down with initial V, force needed to stop it?
- Hilmy atha
- · Replies 10 ·
Gas work -- Heating the gas in a cylinder with a weighted piston on top
- charlie05
- · Replies 13 ·
Voltage at the end of a coaxial cable with 1kΩ source and 10Ω load
- shivik89
- · Replies 5 ·
Coherent state problem in quantum mechanics
- BREAD
- · Replies 1 ·
Special relativity and particle accelerator
- timetraveller123
- · Replies 26 ·
Calculating torque of rotator cuff muscle
- James_The_Ern
- · Replies 7 ·
Electric Potential Problem: Using the Method of Images
- BREAD
- · Replies 1 ·
Difference b/t equilibrium and unstretched length of spring?
- Vitani11
- · Replies 7 ·
Electric field and surface charge density problem
- BREAD
- · Replies 1 ·
Design a series RLC filter for 10kHz
- Kelsi_Jade
- · Replies 6 ·
How much charge does the battery deliver?
- Kelsi_Jade
- · Replies 9 ·
Calculate the voltage between points A and B
- Kelsi_Jade
- · Replies 16 ·
BJT and MOSFET complete analysis
- Cocoleia
- · Replies 28 ·
Find the Current Flowing through each resistor
- Kelsi_Jade
- · Replies 9 ·
Find the magnetic field at the point
- Stendhal
- · Replies 3 ·
Pauli Matrices in the Basis of Y?
- Destroxia
- · Replies 10 ·
Calculating magnetic flux of a rod
- yahelra
- · Replies 2 ·
Find the capacitance of C3 and its charge
- Kelsi_Jade
- · Replies 5 ·
What is the initial deceleration of the impala?
- Rijad Hadzic
- · Replies 1 ·
What angle should the board be placed?
- Rijad Hadzic
- · Replies 15 ·
Self inductance of a coaxial system of cylinders
- cheapstrike
- · Replies 10 ·
Spherical Shell-Potential Energy, Energy density
- Arman777
- · Replies 19 ·
Diffusion of energy by heat flow
- Nacho Verdugo
- · Replies 1 ·
Finding equilibrium position for Lennard-Jones force
- Nacho Verdugo
- · Replies 14 ·