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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Is the m/e Equation Valid When F = 0 in J. J. Thomson's Experiment?
- Samanko
- · Replies 1 ·
Find the time when the projectile runs into the hill (with air resistance)
- Moolisa
- · Replies 6 ·
Apply the Delta Wye Transform to a Circuit
- rugerts
- · Replies 13 ·
Startup Guide: How to Begin Your Business
- trASHf
- · Replies 7 ·
How to find the coefficient of friction?
- trASHf
- · Replies 3 ·
Relativistic Density - Check My Work & Learn Methods
- LilRubyKinz
- · Replies 34 ·
Differentials of Entropy for Air and Water at Different Temperatures
- yamata1
- · Replies 6 ·
Solve for the total Kinetic Energy change with unknowns
- Balti
- · Replies 12 ·
Optics: refraction and reflection
- denniszhao
- · Replies 1 ·
What does the slope of an Fapplied vs Fnormal graph represent?
- joshqg
- · Replies 9 ·
How To Calculate The Force Of Water Exerted On A Full Tank
- tomtomtom1
- · Replies 7 ·
Where can I find the following coefficients for a car?
- Dohako
- · Replies 1 ·
How Does Braking Compare to Turning in Avoiding Collisions?
- brotherbobby
- · Replies 9 ·
Potential energy of an electric dipole
- Samanko
- · Replies 2 ·
Lateral magnification in mirrors, simple issue
- Addez123
- · Replies 3 ·
How do I calculate Heisenburg's Uncertainty Principle?
- Ng Yau Ming
- · Replies 16 ·
Why Are Some Resistors in Parallel While Others Are Not?
- User1265
- · Replies 1 ·
How can I calculate the smallest speed of a proton in a nucleus?
- NoctusPartem
- · Replies 3 ·
Find the maximum potential difference across a series circuit
- mhrob24
- · Replies 11 ·
The total equivalent capacitance
- Samanko
- · Replies 7 ·
The speed of a spaceship flying through dust
- Haorong Wu
- · Replies 4 ·
Santa's Sleigh (Newton's 2nd Law-1D) Acceleration, Horizontal Motion
- Angelx26
- · Replies 6 ·
Maximum Compression for a Block on Spring
- Abu
- · Replies 3 ·
Is My Calculation of a Rolling Steel Hoop's Acceleration Correct?
- dyn
- · Replies 1 ·
Need help with 2 Kinematics questions (New to forum and physics)
- shivam28
- · Replies 2 ·
Circular Motion: Write expression for the period in terms of r and g
- ColoradoGrrrl
- · Replies 2 ·
How Do You Find the Diameter of a Wire Using Voltage and Length?
- Leanne
- · Replies 26 ·
Work/Energy in a Magnetic Field
- MyoPhilosopher
- · Replies 4 ·
Volume of ice needed to mitigate ocean warming since 1871
- awink16
- · Replies 3 ·
What's the use of unit vectors?
- Odette
- · Replies 3 ·
Collision of a puck and a brick
- ac7597
- · Replies 6 ·
Find the charge on the plates of a parallel-plate capacitor w/ dielectric
- mhrob24
- · Replies 3 ·
Is the Equation F=2+4v Dimensionally Correct for Calculating Force?
- daf10
- · Replies 3 ·
Help with a pulley problem with 3 masses
- nuclearfireball_42
- · Replies 31 ·
Relating Uncertainty in Time to Uncertainty in Wavelength
- Blanchdog
- · Replies 1 ·
Finding the constant of this retarding force
- Like Tony Stark
- · Replies 2 ·
Finding the frequency of very small oscillations
- Bjarni
- · Replies 2 ·
Signal Generator, Oscilloscope and Capacitor
- User1265
- · Replies 4 ·
Energy Received Physics of Sound question
- annafagin
- · Replies 1 ·
A Motorcyclist crossing a stretch of land
- Mioojo
- · Replies 4 ·
Deriving an expression for change in internal energy
- Krisd98
- · Replies 5 ·
Triple Product Rule Equivalency
- WhiteWolf98
- · Replies 2 ·
Initial conditions in simple harmonic motion
- Like Tony Stark
- · Replies 11 ·
Minimum separation between incoming proton and alpha particle
- issacnewton
- · Replies 24 ·
What happens to a pendulum clock in a lift when the cable breaks?
- songoku
- · Replies 14 ·
Newton's Second Law for Translation and Rotation
- BayRan
- · Replies 2 ·
How Do You Calculate Torque Generated by Water Flow?
- EEristavi
- · Replies 2 ·
Accel of 2 Masses & 3 Pulleys: F=Ma Solution
- Gbox
- · Replies 7 ·
What is the maximum tension and friction force for a block held on an incline?
- brotherbobby
- · Replies 19 ·
Is the Calculation for the Center of Gravity of Two Spheres and a Rod Correct?
- brotherbobby
- · Replies 2 ·
What Determines Gravitational Potential Energy?
- Harry17
- · Replies 4 ·
Not necessarily homework help but I do not understand Field lines
- Boop de Boop
- · Replies 2 ·
Dipole moment from electrostatic potential equation
- Iriasrol
- · Replies 4 ·
Sig Figs when the Uncertainty is Larger than the Values
- Browntown
- · Replies 1 ·
Understand a Conceptual question on Scattering
- claymine
- · Replies 2 ·
Spectrophotometric Determination of Fe2+ (Beer's Law)
- fbeaker
- · Replies 1 ·
Momentum and impulse of a football
- ac7597
- · Replies 2 ·
I don't know how I got "mysterious energy" in a Carnot heat pump
- Philip Robotic
- · Replies 4 ·
Understanding Sign Conventions in Elevator Tension Problems
- Abu
- · Replies 6 ·
Work-Energy in carrying something down
- lightlightsup
- · Replies 8 ·
Write an expression w1 of the angle shown in the first picture
- Karl Karlsson
- · Replies 4 ·
Calculating the power delivered when a block of mass m slides along
- Mimosapudica
- · Replies 14 ·
Newton's second law along a line
- Jrogers201
- · Replies 9 ·
Water Pressure and 2 dimensional motion
- EEristavi
- · Replies 5 ·
Particle bouncing between walls
- Josh0768
- · Replies 3 ·
A uniform rod allowed to rotate about an axis and then it breaks
- Kaushik
- · Replies 18 ·
Power developed by a person on eating 100g of ice per minute is?
- Mimosapudica
- · Replies 4 ·
Calculate this Spring's Potential Energy
- EEristavi
- · Replies 28 ·
Interactions and Potential Energy
- CJoy
- · Replies 2 ·
Why does a log float horizontally?
- RubinLicht
- · Replies 7 ·
How are the angles involved in deriving magnetic fields for a current loop?
- jisbon
- · Replies 2 ·
How can I calculate the acceleration in this system?
- Noor_Arnaoud
- · Replies 2 ·
Force on a sphere due to a conducting plate
- SingDingLing
- · Replies 5 ·
Combined Gas Law: Find Volume V2
- serendipityfox
- · Replies 8 ·
Escape velocity of an iron asteroid
- ac7597
- · Replies 5 ·
Calculate the centripetal acceleration of the car
- Wolves
- · Replies 4 ·
Analyzing My Attempts at a Question
- Wolves
- · Replies 5 ·
Zeeman effect: Experimental Setup and Explanation
- Kartoshka123
- · Replies 1 ·
Why Are My Calculations for Current in Moving Rods Using the Blv Rule Incorrect?
- fizzyfiz
- · Replies 2 ·
Tension in Rope using Torque? Did I do this correctly?
- kepherax
- · Replies 3 ·
How to find an average acceleration using an average velocity?
- Cacti
- · Replies 5 ·
Moment of Inertia of a Rectangular Picture Frame
- kepherax
- · Replies 3 ·
Diffraction Gratings: Calculating Wavelength for CD ROM
- Sarah0001
- · Replies 6 ·
Finding equations for simple harmonic motion given a graph
- Like Tony Stark
- · Replies 3 ·
Acceleration of a mass lowered by a motor (Help with Non-Ideal Pulley)
- Kermit_the_Phrog
- · Replies 4 ·
Calculating Centrifugal & Coriolis Forces at Rest
- tina21
- · Replies 1 ·
Wave motion and two detectors to measure that motion
- tina21
- · Replies 2 ·
Estimate the mass of the water (Carnot cycle)
- fizzyfiz
- · Replies 10 ·
Are the Forces Different in Parallel and Series Springs?
- posto002
- · Replies 3 ·
How Do You Apply the Lagrange Equation to a Hoop at Theta Equals Zero?
- Shahbakht
- · Replies 1 ·
Very basic circuit question about a Wheatstone Bridge
- User1265
- · Replies 7 ·
Two different answers for compound pendulum problem
- etotheipi
- · Replies 3 ·
Tension in a rotating rod at various places
- brotherbobby
- · Replies 3 ·
Smooth rolling ball rolls down hill, how far can it fly?
- Addez123
- · Replies 3 ·
What is the correct way to solve for weight on two pulleys?
- Addez123
- · Replies 10 ·
Speeding bullet, average force by post on bullet
- serendipityfox
- · Replies 10 ·
What is the coefficient of friction for a pen rolling down a book?
- cs44167
- · Replies 3 ·
Parallel Plate Capacitance and Charge Time
- HelloCthulhu
- · Replies 7 ·
Finding the period of a pendulum in motion along a curve
- Like Tony Stark
- · Replies 8 ·
Circuit Q Basics: Understand Electrical Circuits
- User1265
- · Replies 5 ·