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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Kinetic Energy of a wood on a spring?
- Bottomsouth
- · Replies 1 ·
Why does Coulomb's formula give positive force for like charges?
- nikromancer
- · Replies 2 ·
How Do You Calculate Average Back EMF in a Rotating Coil?
- marpple
- · Replies 18 ·
Finding the spring constant while stretching and compressing
- Eric0
- · Replies 1 ·
Ball 1 bounces backward in momentum problem, should it continue forward?
- yopy
- · Replies 1 ·
Do car and truck experience equal momentum change in a head-on collision?
- jabbie3
- · Replies 1 ·
Finding current across a capacitor in a circuit with two AC voltage sources
- Jimmeh
- · Replies 13 ·
Prom Colin: Physics Problems Answers (16,18,15,13)
- My Porsche
- · Replies 7 ·
Quantum Mechanics Question 1-D Well
- painedcompute
- · Replies 1 ·
Half Life of radioactive needle
- completenoob
- · Replies 3 ·
Electric force problem (determining unknown position to make zero net force)
- KYUI
- · Replies 4 ·
Calculating Force Applied to a Front Tooth Using Elastic Cord Tension
- shizfest
- · Replies 4 ·
What is the equation for finding the mass of an ion using a mass spectrometer?
- shimizua
- · Replies 4 ·
What Are the Correct Directions for the Forces in These Diagrams?
- shimizua
- · Replies 3 ·
Two elastic balls colliding head-on at equal speeds
- Jordash
- · Replies 10 ·
Magnetic Force of a copper wire
- Kandycat
- · Replies 3 ·
Finding the Electric Field Needed to Suspend a Charged Bead
- rockhao
- · Replies 3 ·
Free-Fall Homework: Find Velocity of Dropped First-Aid Kit
- bigzee20
- · Replies 1 ·
How Do You Calculate the Change in Velocity of a Flying Saucer?
- myusername
- · Replies 1 ·
Average Power Calculation in RLC Circuit at 402 Hz?
- icyspicy
- · Replies 1 ·
Trajectory of a Charge in an Electric Field
- TheLegace
- · Replies 1 ·
Speed of an electron in an electric field - trying to find my error.
- rowkem
- · Replies 3 ·
What is the maximum current and electric field in a charged wire?
- haroharo
- · Replies 3 ·
Torque has to equal zero, but introduce F
- jgeogh01
- · Replies 2 ·
Verifying an Electron's Final Speed After Releasing from Rest
- rowkem
- · Replies 1 ·
Calculating Speed of Light on a Spaceship: Earth Relative vs. Spaceship Relative
- tymartin
- · Replies 1 ·
Tangential acceleration - unknown term
- LCattell
- · Replies 2 ·
Simple Motion Questions [Grade 10 Level]
- myusername
- · Replies 4 ·
Momentum Conservation and Center of Mass
- TwinGemini14
- · Replies 2 ·
How Does the Uncertainty Principle Affect Momentum Measurement Accuracy?
- tymartin
- · Replies 1 ·
Understanding Snell's Law: How to Know When Light Bends
- Elbobo
- · Replies 2 ·
Riding a train from Chicago to Detroit
- tymartin
- · Replies 4 ·
Electric Potential at Center of Uniform Conducting Sphere?
- NeedPhysHelp8
- · Replies 4 ·
Why does air escaping a tire get cold?
- cdub27
- · Replies 2 ·
How do I approach physics proofs systematically?
- Jack21222
- · Replies 3 ·
Calculating the Rest Mass Energy of One Mole of Neutrons
- tymartin
- · Replies 3 ·
Capacitance and Max Potential Difference
- sonastylol
- · Replies 3 ·
Net magnetic force on a loop parallel to a wire
- Cheezay
- · Replies 3 ·
Finding pulley moment of inertia with blocks on incline and string
- semaj810
- · Replies 1 ·
Why does the total energy in a satellite's orbit change when it loses control?
- qazxsw11111
- · Replies 6 ·
Battery emf and internal resistance from current vs voltage graph
- Kandycat
- · Replies 1 ·
Oscillations of a weighted ruler
- qazxsw11111
- · Replies 1 ·
How to calculate azimuth from dX and dY in surveying
- StarFire
- · Replies 1 ·
Calculating complex cos curves from data
- brandy
- · Replies 1 ·
Car changes direction: find acceleration and displacement over 4.0 s
- davie08
- · Replies 12 ·
Atmosphere as a function of Zenith angle?
- Ai52487963
- · Replies 3 ·
Spherical mirror, shortest longest focal length
- Yroyathon
- · Replies 7 ·
Finding the Angular Velocity and Center of Mass in a Colliding System
- nns91
- · Replies 12 ·
The Role of the Spring in the Collision
- ch010308
- · Replies 3 ·
Looking at this simple light problem
- qazxsw11111
- · Replies 3 ·
Electrostatics 1st year engineering
- Dell
- · Replies 1 ·
Garden cart being pushed over a bump
- vladimir69
- · Replies 2 ·
What Angle Does Light Refract in Ice?
- tymartin
- · Replies 1 ·
Circuits capacitors, voltage and charge problem.
- zyphriss2
- · Replies 1 ·
How Do Newton's Laws Explain the Motion of Two Men Pushing Each Other?
- pkc111
- · Replies 1 ·
Calculate Force from Energy of a Particle
- ila1985
- · Replies 2 ·
How to use the gradient to find Electric field
- howell
- · Replies 1 ·
How Does the Force on a Particle Change with Position in a Potential Well?
- bakin
- · Replies 1 ·
What is the common velocity of the arrow
- missmerisha
- · Replies 4 ·
Porro prism and Refraction of Light
- Nano
- · Replies 1 ·
Average power consumption in watts
- enchanteuse
- · Replies 4 ·
Force on Charge Moving in Magnetic Field
- Kandycat
- · Replies 3 ·
Using e in a Formula: Electric Potential
- hardwork
- · Replies 2 ·
Linear law with charging a capacitor
- nelsyeung
- · Replies 7 ·
Angular Momentum Conservation Near a Planet: True or False?
- tnutty
- · Replies 3 ·
How to Solve Kinematics Problems with Acceleration and Velocity?
- davie08
- · Replies 2 ·
Is the period 3.44 × 10⁻⁵ s for a 29 kHz frequency?
- -EquinoX-
- · Replies 5 ·
How can the energy absorbed by the water be more than the energy output?
- lnvoker
- · Replies 2 ·
Is the Electric Field Inside a Hollow Dielectric Sphere Zero?
- -EquinoX-
- · Replies 1 ·
How does Temperature affect Resistance?
- roxychc43
- · Replies 1 ·
How Does a Dielectric Affect Capacitor Voltage for Equal Energy Storage?
- kgigs6
- · Replies 2 ·
Index of refraction for vegetable oil
- WizKid77
- · Replies 1 ·
Minimum force in a single turn square loop
- Cheezay
- · Replies 1 ·
Determine the change in internal energy, of the gas during this process
- new^2^physics
- · Replies 2 ·
How Much Energy is Required to Double the Kinetic Energy of Iron Atoms in a Rod?
- roxxyroxx
- · Replies 1 ·
Physics I question Skydiver falling
- bpatel4116
- · Replies 1 ·
I have a test tomorrow can someone me with this vector problem?
- davie08
- · Replies 3 ·
Two Charges, Find Spot of Zero Potential
- kgigs6
- · Replies 1 ·
Proton acceleration between parallel plates
- KYUI
- · Replies 3 ·
Charge distribution in a conductor (using maxwell's equations)
- sweep123
- · Replies 7 ·
How Long Does It Take for a Locomotive to Reach 32 m/s After Crossing?
- ferishta
- · Replies 6 ·
What is the rms current draw of a microwave operating at 1180 W and 120 Vrms?
- saritche
- · Replies 8 ·
Amusement park ride gravitation problem
- holmeskaei
- · Replies 1 ·
How Do Forces Affect Hanging Blocks Connected by Ropes?
- mattw4466
- · Replies 1 ·
How far does the electron move before reaching its turning point?
- rushton_19
- · Replies 4 ·
Is the chain on a rotating amusement park ride strong enough?
- holmeskaei
- · Replies 4 ·
Why doesn't dropping a weight increase torque on a pivoted lever?
- Ertosthnes
- · Replies 13 ·
Momentum and Impulse on a Toy Car: How to Find Velocity and Momentum?
- Shatzkinator
- · Replies 3 ·
Baseball hit at 30 m/s and 30° hits window 12 m high
- seraphimhouse
- · Replies 1 ·
Quantum Physics Question - Second Year University level.
- coffeem
- · Replies 3 ·
Electric potential: point charge in a hollow charged conductor
- misa
- · Replies 4 ·
How Far Does the Block Travel After Being Launched by a Compressed Spring?
- jfbueno
- · Replies 10 ·
A bullet with mass of 0,005g hits a wooden block with a mass of 1,2kg velocity
- pirates
- · Replies 1 ·
Electric force on alpha particle near gold nucleus
- austin1250
- · Replies 4 ·
What Is the Velocity of a Hammer Sliding Down a Roof?
- seraphimhouse
- · Replies 2 ·
Find the speed of light in silica
- stickyriceyum
- · Replies 2 ·
How Do You Calculate Electric Potential and Field on a Circular Plate's Axis?
- Kruum
- · Replies 13 ·
Center of mass and moment of inertia of a weighted wheel
- Stryder_SW
- · Replies 4 ·
Calculating Torque for Constrained Wheel Rotation
- Stryder_SW
- · Replies 11 ·
Finding how high a winch can lift a mass before the battery discharges
- georgedaisuki
- · Replies 5 ·