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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Does a closer satellite have lower total energy?
- Yatin
- · Replies 3 ·
What is the Charge on a Capacitor with Given Area and Plate Separation?
- gracy
- · Replies 104 ·
Maximum force pulling a wheel without it slipping
- WinterGrascph
- · Replies 2 ·
Why use center of mass moment of inertia in torque equation for rolling sphere
- jcruise322
- · Replies 15 ·
Finding Time and Velocity for a Motorcycle Accelerating at 1.6m/s^2
- werson tan
- · Replies 2 ·
Attempting to understand relativity and time dilation
- Prierin
- · Replies 6 ·
Conservation of Energy vs Conservation of Momentum problem
- TheDemx27
- · Replies 4 ·
What Is the Minimum Angle to Keep the Boxes Stationary on an Inclined Plane?
- whitejac
- · Replies 2 ·
Collision of two rolling bodies
- Arka420
- · Replies 3 ·
What is the flaw in my logic for solving this Newton's 2nd law problem?
- David112234
- · Replies 6 ·
Change in pressure when merging tubes
- Gerald Funk
- · Replies 5 ·
What is the relationship between tangential and radial acceleration?
- De_Dre01
- · Replies 1 ·
Find distance traveled given electric field + vf and vi
- Shaif
- · Replies 5 ·
Two Toilet Papers dropping-Rotational Inertia
- CentrifugalKing
- · Replies 11 ·
Free body diagram force direction for a wheel on an incline
- whitejac
- · Replies 4 ·
(0.04)c(33.7-23.5)+(0.08)c(33.7-39.6) Find C
- Andrei316
- · Replies 3 ·
Newton's laws: impact force, orbital centripetal force, weight on Earth
- stephaine
- · Replies 4 ·
Bullet acceleration into moist clay
- thehitchcocks
- · Replies 4 ·
Verifying plane wave solution to time-independent Schrödinger equation
- mrojc
- · Replies 1 ·
Tension of a pendulum and force components
- **Mariam**
- · Replies 8 ·
Finding equivalent capacitance between A and B with isolated component
- gracy
- · Replies 67 ·
Speed of wedge when block reaches the bottom on frictionless surfaces
- AnwaarKhalid
- · Replies 10 ·
Force between two current carrying wires
- Shivansh Mathur
- · Replies 2 ·
Calculate force on point charges
- Shivansh Mathur
- · Replies 2 ·
Solving for potential energy after time t.
- blipped
- · Replies 4 ·
Direction of (Inertial) centrifugal force here?
- AHashemi
- · Replies 5 ·
Why is the 200 N·m moment included in the y-axis equation?
- werson tan
- · Replies 14 ·
Counter emf generated in a motor at full speed
- lloyd21
- · Replies 1 ·
Rotation of wheel between two non-slip surfaces
- Brian in Twisp
- · Replies 7 ·
Surface Charge Density of Coaxial Cylinder with Canceling Electric Fields
- engnrshyckh
- · Replies 3 ·
Freefall problem of a diver jumping horizontally upward
- RaeZ
- · Replies 7 ·
Black hole calculations, the "Event Horizon Telescope"
- Ellie Snyder
- · Replies 1 ·
Dynamics/kinematics of rotating sphere
- faradayscat
- · Replies 4 ·
Finding tension and support reactions for a pole with cables and two signals
- DarkAriel7
- · Replies 12 ·
Error Propogation for Half-Life
- Alejandro Golob
- · Replies 4 ·
Driven simple pendulum - system of first order ODEs
- Edge Of Pain
- · Replies 4 ·
How do I solve for rotational dynamics using Newton's second law?
- Dusty912
- · Replies 20 ·
Finding time in a pulley system
- Axel7
- · Replies 3 ·
Question regarding finding velocity give force and mass
- jcruise322
- · Replies 3 ·
Quantitative Analysis of Electron Motion in a Uniform Magnetic Field
- lloyd21
- · Replies 20 ·
What is the current in the loop
- lloyd21
- · Replies 13 ·
Special relativity two moving frames
- whatisreality
- · Replies 3 ·
Voltage Drops in Series Resistors
- Drizzy
- · Replies 10 ·
Does the Angle of a V-Tube Influence Fluid Oscillations?
- ljeonjko
- · Replies 4 ·
How to calculate bridge deformation based on "design"?
- David Goldman
- · Replies 4 ·
Finding Dimensions of plates in Electric Field
- lloyd21
- · Replies 29 ·
Calculating Apparent Weight on a Rotor Ride
- LesterTU
- · Replies 3 ·
Principle behind electrostatic shielding?
- Dr.azwar
- · Replies 4 ·
Check Paper: Describe Apparatus, Sensor, Data, Physics, Writing
- BiGyElLoWhAt
- · Replies 2 ·
What is the Momentum Change in Pairs Figure Skating?
- uni2820
- · Replies 6 ·
Why is momentum conserved in non-isolated systems with external forces?
- vetgirl1990
- · Replies 4 ·
How does the diameter of a funnel affect the speed of air passing through it?
- Gerald Funk
- · Replies 6 ·
How Do You Calculate Angular Acceleration After a Collision?
- MARK STRETERS
- · Replies 1 ·
Capacitor Charge Calculation for Series Connection with 9.0V Battery
- gracy
- · Replies 17 ·
A simple relativistic time question
- Dodsy
- · Replies 8 ·
How Do You Calculate Car Mass from Kinetic Energy Change?
- Marts12
- · Replies 6 ·
I think I understand, but where do you find force?
- Laura0901
- · Replies 47 ·
Kinetic Gas Theory Calculations
- Jimmy87
- · Replies 1 ·
Conservation of angular momentum of disk and bullet system
- jcruise322
- · Replies 3 ·
Finding moment of inertia when two rotating disks combine
- Mia
- · Replies 1 ·
Circular Motion Question searching for Centripetal force
- claytonwideman
- · Replies 1 ·
Finding the force to pull out a wedge with friction
- OmniNewton
- · Replies 9 ·
Why is Block B not experiencing a normal force in this static friction problem?
- OmniNewton
- · Replies 10 ·
Question regarding block and pulley system with inertia
- jcruise322
- · Replies 4 ·
Recoil velocity on frictionless surface
- Valenti
- · Replies 3 ·
How Is Angular Momentum Calculated in Different Pivot Scenarios?
- Mia
- · Replies 7 ·
Moving vehicles and Doppler Effect
- Nishikino Maki
- · Replies 9 ·
Trouble understanding - to + vs + to - current flow
- pecchiaw12
- · Replies 5 ·
Ideal Mechanical Advantage of this bicycle?
- Rionic
- · Replies 3 ·
Rolling without slipping over a plank
- (Ron)^2=-1
- · Replies 12 ·
Perfectly Elastic Collision Arrow / Finding Final Velocity
- De_Dre01
- · Replies 2 ·
Determining the direction of friction
- OmniNewton
- · Replies 4 ·
Find expression for electric field from magnetic field
- charlief
- · Replies 4 ·
Does Walking with a Suitcase Involve Work?
- Baconfish
- · Replies 2 ·
What Happens to the Tensions in a Cut String Problem?
- Vibhor
- · Replies 10 ·
Special Relativity -- Velocity transformation
- Lito
- · Replies 1 ·
Dynamics of Rotational Motion: Quarry Crane Problem
- Creepypunguy
- · Replies 2 ·
Calculating acceleration when only have time and distance
- artworkmonkey
- · Replies 4 ·
How does an underwater seal prevent air from entering the chest tube?
- Sarah00
- · Replies 4 ·
Egg Drop Project with Tiny Requirements
- kate1415
- · Replies 5 ·
Equivalent capacitance:pentagon shape
- gracy
- · Replies 7 ·
How fast is ball thrown up to come down in 2 seconds
- David Earnsure
- · Replies 10 ·
Finding potential of conducting sphere
- Titan97
- · Replies 23 ·
Potential Energy of an Electron in a Battery
- erisedk
- · Replies 6 ·
First Law of Thermodynamics - Piston
- rpthomps
- · Replies 19 ·
How Do You Prove Static Equilibrium in a Three-Mass, Two-Pulley System?
- kaienx
- · Replies 27 ·
Determine static coefficient of friction
- werson tan
- · Replies 12 ·
Voltage Distribution in a Circuit with Broken Lamps
- Drizzy
- · Replies 1 ·
Rate of Change of Diffraction Pattern with Increasing Distance Between Slits
- phyvamp
- · Replies 1 ·
Moment of inertia about center of mass with four holes?
- tshah321
- · Replies 9 ·
Questions about rolling and direction of static friction?
- Warlic
- · Replies 6 ·
Free body diagram for a sliding contact
- Racer_Rob
- · Replies 9 ·
How to calculate the force on charge?
- Lukas94
- · Replies 1 ·
What is the threshold velocity for using the relativistic energy equation?
- Drizzy
- · Replies 8 ·
Total Moment of Inertia of Two Rods
- Raios168
- · Replies 8 ·
What is the solution to the 12 resistor cube problem using symmetry?
- Abhishek Gupta
- · Replies 3 ·
Average current by particle moving in circle
- songoku
- · Replies 3 ·
What does a voltmeter read when a switch closes in a circuit?
- Drizzy
- · Replies 13 ·
Phase angle in parallel RLC circuit without resistor
- AKJ1
- · Replies 1 ·
Determine the force to enable the object to move down
- werson tan
- · Replies 5 ·