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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Simplifying forces for a block on an incline with applied force
- Asleky
- · Replies 5 ·
Total Length of a Stretched Spring: How Do I Calculate It?
- jakeginobi
- · Replies 4 ·
Why is the capacitor current positive in nodal analysis when current flows into the node?
- timnswede
- · Replies 2 ·
Motion of charge in electric and magnetic fields
- krbs
- · Replies 8 ·
Determine the location of her center of mass
- ual8658
- · Replies 5 ·
Circuit with Four Resistors and Two Switches
- Jake Russell
- · Replies 4 ·
Problem using Newton's 2nd Law F= m x A
- Bob K99
- · Replies 6 ·
Required heat, entropy change of object dropped in water
- ElectricEel1
- · Replies 3 ·
What time interval between wave fronts in S and S'?
- Breadsticks
- · Replies 5 ·
Acceleration of object at specific height?
- KDprevet
- · Replies 8 ·
Are these torques correct for a simple balancing/fulcrum exp
- Robert Parsons
- · Replies 4 ·
How Long and How Fast Do Divers Fall from Different Heights?
- x2017
- · Replies 7 ·
Induced EMF and total B-field in a shrinking circular loop
- Erik P
- · Replies 1 ·
Finding current and potential difference with Kirchhoff's laws
- WeiLoong
- · Replies 10 ·
Why does photoelectric current depend on intensity if max KE doesn't?
- Janiceleong26
- · Replies 19 ·
What is the smallest frequency difference that can be detected by the human ear?
- burningbend
- · Replies 13 ·
Particle Released From Narrow Potential - Fourier Transform
- BOAS
- · Replies 7 ·
Frequency of gears (given frequency of shaft)
- Reefy
- · Replies 9 ·
Projectile Motion - Two fired at different times
- cnstntcnfsn
- · Replies 14 ·
At any given instant, how fast might an electron be moving?
- Potatochip911
- · Replies 4 ·
Understanding Linear Momentum of Waves with No Mass
- Darly
- · Replies 1 ·
Forces of a basin surrounding a drain
- doneky
- · Replies 3 ·
Determining revolutions of a wheel
- brake4country
- · Replies 7 ·
Force of a wire induced by earth magnetic field
- R2D2
- · Replies 4 ·
Questions of single slit diffraction
- toesockshoe
- · Replies 3 ·
Finding Work From Impulse: Calculating Impact on a Ball by a Bat
- x2017
- · Replies 1 ·
Force on a dipole moving through a magnetic field
- pondzo
- · Replies 13 ·
How Much Work Does the Landing Mat Perform on Yelena Isinbayeva?
- x2017
- · Replies 21 ·
Battery terminal voltage with 5.0 Ω internal resistance
- mattbeatlefreak
- · Replies 3 ·
Electrical potential of the sphere
- Ivan Antunovic
- · Replies 20 ·
Calculating Input Voltage for Switched Op-Amp Circuit
- Gaz1873
- · Replies 7 ·
Why does an autofocus camera need to emit IR if objects already emit it?
- nightsparkling
- · Replies 3 ·
How to Calculate the Area Under a Curve for v(t) Using Integration?
- brycenrg
- · Replies 12 ·
Center of gravity vs center of buoyancy
- werson tan
- · Replies 6 ·
What is the surface current density at a general point on a conducting sphere?
- RobTwox
- · Replies 1 ·
Whats the force applied for a cart traveling up a hill?
- AndroidX7
- · Replies 28 ·
Current induced in concentric superconducting loops
- Holmez2_718
- · Replies 6 ·
How Do You Calculate the Velocity of a Point on a Rotating Disc?
- JJK1503
- · Replies 4 ·
How Do You Calculate the Acceleration of This Inflated Balloon?
- vinamas
- · Replies 4 ·
Dielectric in a capacitor in equilibrium
- Epiclightning
- · Replies 4 ·
Determine is box of unknown mass is sliding down a ramp?
- Jojo96
- · Replies 5 ·
Current directions in two-battery circuits with Kirchhoff's laws
- Epiclightning
- · Replies 17 ·
Inelastic Collision and kinetic energy?
- tvshonk
- · Replies 3 ·
Calculate the work done when a conductor moves through a mag
- DevonZA
- · Replies 2 ·
Finding the magnitude and direction of the electric field
- cvc121
- · Replies 4 ·
Displacement-distance vs Displacement-time graphs for waves
- Suhayl Patel
- · Replies 1 ·
Equation relating mass, time, distance, velocity, and force?
- The Exestentialist
- · Replies 6 ·
Determining universal gravitational constant G
- Tony Manilla
- · Replies 2 ·
Newton's Third Law and Car Crashes
- Balsam
- · Replies 7 ·
Why does a spinning egg keep rotating after you stop the shell?
- Balsam
- · Replies 2 ·
Converting Position/Time to Velocity/Time Graphs
- john lavoie
- · Replies 8 ·
Minimum velocity on inclined rotating rotor at 10°
- jaguar ride
- · Replies 23 ·
Relative velocity of vehicles moving at different angles
- dlacombe13
- · Replies 7 ·
Thermal Dynamics - Ring Heated Up
- Jordan D
- · Replies 11 ·
Archived Balanced length of a potentiometer wire
- kalupahana
- · Replies 2 ·
Carbon Dioxide in the Martian Ice Caps
- Raptor112
- · Replies 7 ·
Maximum height to push a fridge without tipping
- faradayscat
- · Replies 3 ·
Calculate Friction in Spring hanging from ceiling
- cellurl2
- · Replies 3 ·
How to Calculate the Height a Helium Balloon Ascends Using Mass and Density
- vinamas
- · Replies 12 ·
Why generalized force equals to zero?
- harmyder
- · Replies 8 ·
Pulling a Carpet: Min Force & Velocity of Centre of Mass
- Titan97
- · Replies 6 ·
Is the Impulse of Force Calculated Correctly in This Bullet and Block Collision?
- normal_force
- · Replies 25 ·
How to Find Angles in a Static Equilibrium System with Pulleys?
- kaienx
- · Replies 9 ·
What is the acceleration of the 10 kg block on the frictionless ramp?
- JustAverageSkill
- · Replies 14 ·
Would two conductors of same charge touch or not touch?
- notaphysmajor
- · Replies 1 ·
Elastic collision with a spring constant and unknown masses
- STUDENT vs HOMEWORK
- · Replies 2 ·
Thermodynamics conceptual problem
- Vibhor
- · Replies 13 ·
Curve fitting (Linearization) of functions (and thus graphs)
- Orha
- · Replies 7 ·
How Do You Calculate the Specific Latent Heat of Fusion of Nitrogen?
- henry ballantyne
- · Replies 1 ·
Electric Field of 2 charges on x-axis
- notaphysmajor
- · Replies 2 ·
Water fountain projectile motion with 3.5cm launch height
- dlacombe13
- · Replies 11 ·
Cylindrical barrel Hydrostatic Pressure
- BrianSauce
- · Replies 6 ·
Question on Rotational Motion and Torque Theory
- RoboNerd
- · Replies 21 ·
How to explain force in turning car
- RubinLicht
- · Replies 2 ·
Elevator acceleration when apparent weight doubles
- Derpicus
- · Replies 9 ·
Finding average force and time
- Kamisama
- · Replies 17 ·
How do I find distance given time and an arbitrary distance?
- Eclair_de_XII
- · Replies 36 ·
What Is the Minimum Energy Required to Break a Molecule Apart?
- Sheldonpayne
- · Replies 1 ·
Finding Angle of String with Two Charged Balls
- Quinn Pochekailo
- · Replies 1 ·
Locomotive stopping distance with 142N friction force
- bchq333
- · Replies 12 ·
How are Newton's 2nd and 3rd Law Both True?
- in the rye
- · Replies 12 ·
Why is 1.2g the Hypotenuse on an Inclined Plane?
- Jamie Bristow
- · Replies 3 ·
Charged particle released from rest: final speed calculation
- Jus10
- · Replies 5 ·
Archived Lenz' Law Scenarios for two wires with varying distance between them
- mnoodle12
- · Replies 1 ·
Shearing Force Direction in Fluid Mechanics
- goldfish9776
- · Replies 4 ·
Free falling particle near Earth's surface (Diff. Eq.)
- Potatochip911
- · Replies 22 ·
Why is the ratio of displacements in springs different than expected?
- erisedk
- · Replies 3 ·
Two objects attached with a spring
- giokrutoi
- · Replies 97 ·
Drag Racing Acceleration Question
- Grace204
- · Replies 10 ·
Kinetic energy of three protons with two positrons at square corners
- Titan97
- · Replies 9 ·
Particles connected with a string
- erisedk
- · Replies 1 ·
What is the induced current in a resistor due to a moving wire with current?
- IndyKuma
- · Replies 1 ·
Calculating Initial Velocity of Water After Nozzle Increase
- goldfish9776
- · Replies 6 ·
Why Is the Resultant Force on the Blade Directed Downwards?
- werson tan
- · Replies 5 ·
Why aren't pressures equal at the same point in Bernoulli's equation?
- werson tan
- · Replies 16 ·
How to find the acceleration of a rebounded ball?
- Eclair_de_XII
- · Replies 17 ·
What do 2.1 and 0.35 represent in this force equation?
- werson tan
- · Replies 7 ·
Work Done on 100 kg Block by 100 N Force in 4s
- x2017
- · Replies 5 ·
How Do You Convert Between Lux and W/m²?
- says
- · Replies 5 ·
How to find the acceleration of a ball rolling on ground?
- Eclair_de_XII
- · Replies 14 ·