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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Inelastic Collision and Finding Initial Velocity
- pitaaa
- · Replies 2 ·
Equilibrium and Torque and minimum mass
- tambourine
- · Replies 8 ·
Having hard time understanding Universal gravity Law
- HelloMotto
- · Replies 5 ·
Pressure needed to pump water 1532m up a vertical pipe
- Gear300
- · Replies 5 ·
Force on electron as it travels through conductor
- NATSALANE
- · Replies 9 ·
What defines an algebraic fraction
- ramstin
- · Replies 6 ·
Efficiency of nuclear powerplants
- maithie
- · Replies 6 ·
How Much Does 2.9955623e+05 Tonne Weigh?
- designerdan08
- · Replies 4 ·
How Large Should the Second Tank Be to Achieve the Desired Pressure Increase?
- pavadrin
- · Replies 1 ·
Kinetic energy measurement in a non-normalizable state
- jalobo
- · Replies 1 ·
What is the speed of the traveler ?
- kevinlatt
- · Replies 5 ·
How Much Energy Can a 450 m² Solar Panel Collect in an Hour?
- kdrobey
- · Replies 2 ·
Finding mass moment of inertia of a triangle with area density
- dgm
- · Replies 4 ·
Cyclotron accelerating protons to 20 MeV with potential gap 100 kV
- bhargavdjoshi
- · Replies 1 ·
What is the electric field at the origin due to a distribution of charges?
- purduegirl
- · Replies 3 ·
How come a bouncing ball does not exhibit SHM characteristics?
- .NoStyle
- · Replies 5 ·
Finding current in a coil with changing magnetic field
- MeKnos
- · Replies 5 ·
Induced current in copper wire
- vigintitres
- · Replies 3 ·
What is the charge that can be stored on this capacitor
- ziplock2k
- · Replies 3 ·
I'm not sure what you're asking. Can you clarify?
- kdrobey
- · Replies 3 ·
Solving Planetary Motion: X & Y's Circular Orbits
- lempkema
- · Replies 3 ·
Pacemaker and Wire with Current
- myersb05
- · Replies 11 ·
What is the Tension in the Horizontal Cable Supporting a Crane?
- jrrodri7
- · Replies 1 ·
Equivalent capacitance of 4-capacitor network circuit
- purduegirl
- · Replies 22 ·
Calculate Density of Spherical Planet - 2.58hr Orbit
- lempkema
- · Replies 6 ·
Electric field inside a coaxial wire and copper shell using Gauss's law
- purduegirl
- · Replies 10 ·
Average emf in a 150-turn rectangular coil rotating in a magnetic field
- purduegirl
- · Replies 18 ·
Rotating meterstick problem w/ weights.
- jrrodri7
- · Replies 3 ·
Physics problems for Texas Science Teaching Exam
- brute25
- · Replies 3 ·
Friction problem from Halliday and Resnick
- Farnak
- · Replies 4 ·
What is the position of a particle at maximum speed?
- jrrodri7
- · Replies 7 ·
Thermal Expansion of a brass plug
- 0338jw
- · Replies 8 ·
What is the limit for the time of travel for a projectile with large damping?
- loonychune
- · Replies 4 ·
Calculating River Flow Rate from Boat Trip Data
- osker246
- · Replies 7 ·
Finding Speed of Satellite in Geosynchronous Orbit
- Lance WIlliam
- · Replies 3 ·
If a planet has Earth's mass but twice Earth's gravity, what is its radius?
- Lance WIlliam
- · Replies 12 ·
How Do You Calculate Net Torque with Different Forces and Angles?
- mmark
- · Replies 2 ·
Displacement: Vector or Scalar?
- mmark
- · Replies 1 ·
Solving Sailboat Problem: Magnitude and Direction of Wind Velocities
- ridlejs
- · Replies 1 ·
Calculating Current and Phase Angle in a Series RLC Circuit
- kdrobey
- · Replies 3 ·
Ball thrown from top of building
- jhoffma4
- · Replies 1 ·
How Can Mary Row Across a Flowing River?
- osker246
- · Replies 1 ·
Why Does the Force Calculation on Parallel Wires Yield Zero?
- myersb05
- · Replies 1 ·
Finding Kevin's speed before grabbing his brother in elastic collision
- spidey12
- · Replies 2 ·
Why does current diverge but increase slowly if R=0 in an RL circuit?
- tuananh3ap
- · Replies 7 ·
Frequency where reactence is zero
- kdrobey
- · Replies 6 ·
Physics: Torque and static equilibrium
- Frantelle
- · Replies 1 ·
How Far Will the Ball Strike the Opposite Wall?
- roam
- · Replies 2 ·
Finding Absolute Permeability from Magnetization
- SuccessTheory
- · Replies 12 ·
What is the Power Factor of a Series RCL Circuit at 2520 Hz?
- kdrobey
- · Replies 3 ·
Finding A and B to Satisfy A X B = B
- student 1
- · Replies 4 ·
Find angular acceleration when wheel rotates 2π radians in 2 seconds
- student 1
- · Replies 7 ·
What is the Critical Period for a Neutron Star and How is it Estimated?
- FNL
- · Replies 2 ·
Find potential at O and capacitance between A and B
- KUSHAGRA
- · Replies 6 ·
Find accel. of g on Saturns Moon.
- Lance WIlliam
- · Replies 7 ·
Calculating Mars's Orbital Period Using Kepler's Third Law
- Lance WIlliam
- · Replies 3 ·
Finding Weight on Inclined Plane
- tod88
- · Replies 3 ·
Particle oscillating with acceleration a = k(100-x), find k and velocity at x = 120mm
- noodle_snacks
- · Replies 2 ·
Relationship between velocity and stopping distance
- Twickel
- · Replies 1 ·
Energy, work, 2 masses on incline
- FurFur
- · Replies 37 ·
Checking if a Force is Conservative: A Tutorial
- asi123
- · Replies 3 ·
What is the Maximum Magnetic Force on an Electron in a Television Set?
- kdrobey
- · Replies 2 ·
Calculating Coefficient of Friction: Newton's 3rd Law Examples
- honeycoh
- · Replies 1 ·
Electric potential difference during a thunderstorm
- pumpkin485
- · Replies 1 ·
Planet Velocity at Aphelion: Find the Answer
- Ready2GoXtr
- · Replies 1 ·
Weight on a planet with 1/100 Earth's mass and 1/4 Earth's radius
- Ready2GoXtr
- · Replies 7 ·
A Proton Moving Freely in a Constant Magnetic Field
- myersb05
- · Replies 7 ·
Why do different materials have different specific heat capacities?
- Christopher M
- · Replies 3 ·
Tightrope walker: finding mass from cable tensions at 70° and 80°
- fatmanx
- · Replies 6 ·
How Do You Calculate the Two Possible Angles of an Airplane in a Magnetic Field?
- kdrobey
- · Replies 1 ·
Solenoid length of wire problem
- kayak4life87
- · Replies 6 ·
What is the Torque on a Looped Wire in a Uniform Magnetic Field?
- ketchuppy
- · Replies 4 ·
Calculating Maximum Magnetic Force on Electrons in a Television Set
- thompson.1674
- · Replies 3 ·
Rotational kinetic energy of a 200 kg flywheel at 3160 rad/s
- Djbari
- · Replies 4 ·
Calculating Force Between Parallel Wires
- waleye262
- · Replies 3 ·
Angular Frequency Change with Mouse Movement on Wagon Wheel
- sheevz
- · Replies 2 ·
Determining Velocity and Direction of Second Ball After Collision
- konceptz
- · Replies 7 ·
Destructive interference from airplane reflection at 1152 kHz
- jhoffma4
- · Replies 1 ·
How Far Did the Car Travel Given Work, Mass, and Coefficient of Friction?
- Takuya925
- · Replies 8 ·
Find the center of mass of a semi-circular plate
- Debelius
- · Replies 1 ·
Calculating Work Done by a Carnot Engine
- Darth Geek
- · Replies 5 ·
How Does Angular Acceleration Arise in a Rotating Cylinder with Multiple Forces?
- Ready2GoXtr
- · Replies 8 ·
How far are you from the intersection when you begin to apply the brakes?
- osker246
- · Replies 10 ·
Will a 100 kg buoyant force lift a 90 kg weight attached to a lever and wedge?
- alibaba2
- · Replies 1 ·
Special Relativity- Acceleration without Linear Algebra
- Battlemage!
- · Replies 3 ·
Why do energy equations change when I shift the reference point on a vertical spring?
- nothing123
- · Replies 2 ·
Finding angular speed and center of mass velocity from an impulse
- dirk_mec1
- · Replies 8 ·
Estimating organ pipe frequency from a photograph
- physicsdawg
- · Replies 5 ·
Is My Spring Equation Correct? A Quick Check
- asi123
- · Replies 3 ·
Deriving moment of inertia from rotational dynamics
- HT3
- · Replies 1 ·
Determine the horizontal component
- Larrytsai
- · Replies 2 ·
Why Does a Sliding Rod Lose Contact with the Wall at Two Thirds Its Height?
- gloacha
- · Replies 1 ·
Periodic wave direction question.
- NBAJam100
- · Replies 3 ·
What is the Total Time for a Sprinter Reaching Top Speed in 2.14 Seconds?
- osker246
- · Replies 3 ·
What Determines the Phase Constant in Oscillatory Motion?
- BioCore
- · Replies 5 ·
How Fast Does Water Exit a Hole in a Tank?
- Gear300
- · Replies 2 ·
How Do You Calculate Electrical Parameters of a Heater in an RLC Circuit?
- purduegirl
- · Replies 11 ·
Finding velocity from kinetic energy with KE = 1,400,000 J and mass 1500 kg
- huskiehenne
- · Replies 1 ·
Potential Energy and the Electric Potential Difference
- WGDawg3
- · Replies 1 ·