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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How Do You Calculate the Angle in a Diffraction Grating Equation?
- ibysaiyan
- · Replies 14 ·
Questions with uncertainties for lab reports
- hellothere123
- · Replies 10 ·
Is energy dissipated per unit charge in a circuit measured by e.m.f?
- Xcommunicated
- · Replies 1 ·
O-Level Physics: Resistance Questions Answered
- Xcommunicated
- · Replies 1 ·
What Forces Are at Play to Prevent Slippage Between Two Accelerating Boxes?
- zeion
- · Replies 3 ·
Maximum repulsion between two charges from a divided charge Q
- DIMSKK
- · Replies 4 ·
Electric dipole moment question
- DIMSKK
- · Replies 2 ·
Solve for di: Negative Effect on Object Distance?
- Grekory
- · Replies 3 ·
Calculating Velocity and Height of a Ball on a Frictionless Track
- mkuek
- · Replies 22 ·
Potential energy of a string question
- genu
- · Replies 6 ·
Volume work, absolute and relative pressure confusion
- kandelabr
- · Replies 2 ·
Can a Simple Glass Lens Focus White Light Correctly?
- jakey
- · Replies 4 ·
A couple basic conceptual questions
- haydn
- · Replies 5 ·
Resistence and double stranded wire.
- zebra1707
- · Replies 6 ·
Will batteries' terminal get discharged if the positive one is connected to
- Ahsan Khan
- · Replies 20 ·
Skier going down a hill force and motion question
- zeion
- · Replies 4 ·
Where between Earth and Moon is gravitational force balanced
- zeion
- · Replies 2 ·
Bungee Jump relating to force question
- zerogoal
- · Replies 8 ·
Orbital Velocity vs Mass and Orbital Velocity vs Radius
- ha9981
- · Replies 2 ·
Plumb Bob Problem at 34.5° North Latitude
- merksican
- · Replies 1 ·
Soccer - What was the impulse on the soccer ball
- gansta344u
- · Replies 2 ·
Calculating Speed of Roller Coaster Car at Top of Loop-the-Loop
- ceday
- · Replies 6 ·
Uranium isotope relative abundance at diff times
- thiev
- · Replies 1 ·
Locomotive, friction, and speed question
- xgoddess210
- · Replies 2 ·
Energy of a Photon: Wavelength, Frequency, Intensity, Speed, Polarization
- jakey
- · Replies 4 ·
Solve Energy/Work Q: Mass .263 kg Dropped on Spring k=252 N/m Compresses 11.8 cm
- vivekfan
- · Replies 1 ·
Finding current when voltage peaks in an RLC circuit
- Stingarov
- · Replies 14 ·
Electrostatics problem inslator and a conductor problem
- koab1mjr
- · Replies 2 ·
Bullet lodges in block attached to spring with 7.10 cm amplitude
- hellokitty
- · Replies 8 ·
Can Work Done Be Negative and Is Potential Energy Ever Negative?
- vivekfan
- · Replies 2 ·
Solving an ideal gas law problem with P1V1/T1=P2V2/T2
- j88k
- · Replies 1 ·
Did bad on my test but i think i get MOMENTUM
- zell_D
- · Replies 1 ·
Conservation of Energy Problem.
- TwinGemini14
- · Replies 1 ·
Finding The Tension force with different angles
- Ashleyz
- · Replies 6 ·
What Is the Electric Flux Density Between Charged Parallel Plates?
- adedoyin.mike
- · Replies 5 ·
Calculating Distance Between Wave Crest and Zero Acceleration Point?
- dietcokegal
- · Replies 5 ·
Refrigerator coefficient of performance with 5.40 K
- j88k
- · Replies 1 ·
Calculating Work and Thermal Efficiency of a Heat Engine
- j88k
- · Replies 3 ·
Calculating Gravitational Potential Energy of a Hanging Ball
- gansta344u
- · Replies 3 ·
Calculating Current Through a 100W Light Bulb
- phy112
- · Replies 1 ·
How does weight influence static and knetic friction?
- musi
- · Replies 4 ·
Index of refraction and speed of light.
- jakey
- · Replies 3 ·
Potential Energy and Kinetic Energy Question
- gansta344u
- · Replies 4 ·
Calculating Torque for Rotating Cylinder in V Groove
- Kurret
- · Replies 4 ·
A bus, a pendulum and acceleration
- jemerlia
- · Replies 3 ·
How can you calculate the value of 'g' without fancy equipment?
- DERRAN
- · Replies 2 ·
How Does Spring Stretching Affect Wave Speed?
- dietcokegal
- · Replies 1 ·
Does Throwing a Brick Overboard Increase or Decrease Lake Water Levels?
- vette982
- · Replies 1 ·
Can't Check Your Work: Conceptual Problems in Physics
- Jngo22
- · Replies 5 ·
Physics Conceptual Question: Buoyancy?
- Goodyearkl
- · Replies 1 ·
Mutual Inductance of solenoid and coil
- hellogirl88
- · Replies 1 ·
Electric potential: finding speed and distance?
- papi
- · Replies 4 ·
Finding velocity with magnetism?
- papi
- · Replies 2 ·
"Doppler Effect: Applying a 35 m/s Car
- dietcokegal
- · Replies 1 ·
Falling object rotating spherical shell via energy
- peaceandlove
- · Replies 2 ·
Electric Potential Inside a Parallel-Plate Capacitor
- k3N70n
- · Replies 1 ·
Identifying Forces on a Skier Sliding Down a 15 Degree Slope
- xgoddess210
- · Replies 2 ·
Calculating the x-component of a vector with magnitude and direction
- ymehuuh
- · Replies 2 ·
2 Objects connected by rigid rod moving perpendicular to each other
- physacks
- · Replies 6 ·
How Does a Spring System Work on an Inclined Plane?
- jabbie3
- · Replies 4 ·
How to Calculate Work Done by a Motor Pulling a Cup through a Parabola?
- Melawrghk
- · Replies 6 ·
Finding skid mark length for a braking car with friction
- wcbryant87
- · Replies 2 ·
Coin on Turntable: Find Max Distance w/o Slipping
- julz3216
- · Replies 5 ·
Vector Addition and Subtraction Questions
- ymehuuh
- · Replies 2 ·
How Many People Can a Raft Made of 9 Logs Hold Before Getting Wet?
- superjen
- · Replies 2 ·
What is the Speed of the Train as it Rounds a Curve?
- julz3216
- · Replies 7 ·
Coefficient of friction greater than 1 on a wooden ramp at 47°
- northern expo
- · Replies 2 ·
Calculating Frequency of a Transverse Wave on a String
- dietcokegal
- · Replies 1 ·
Electric field produced by 2 point charges
- rowkem
- · Replies 1 ·
What is the force acting on a 2kg object at the top of a parabolic trajectory?
- saveourpens
- · Replies 2 ·
Static Friction and angle of Repose
- genu
- · Replies 4 ·
Solving for Distance of a Rotating Wheel
- julz3216
- · Replies 4 ·
How Do You Calculate Momentum and Kinetic Energy in a Two-Car Collision?
- nofinga911
- · Replies 5 ·
Question on the effects of size of bulb on thermomters
- MforceXXII
- · Replies 16 ·
Series versus Parallel Capacitors
- zoner7
- · Replies 3 ·
Gravity Assist (Slingshot effect)?
- !Live_4Ever!
- · Replies 1 ·
Coeficient of kinetic friction
- genu
- · Replies 1 ·
Calculate Work and Crate Speed in Astronaut's Space Station Maneuvers
- WolfpackPride
- · Replies 1 ·
Using a capped barrel to create recoil when firing blanks from a 76mm tank gun
- prefetch
- · Replies 2 ·
Falling Velocity Relative to Weight
- coolguy9
- · Replies 9 ·
No idea how to start this tension/cable problem
- tatsalez
- · Replies 2 ·
Refraction in a Glass Cylinder with just 1 Number
- Phoenixtears
- · Replies 3 ·
Energy of conservation question
- physics120
- · Replies 2 ·
Centre of Mass of Isosceles Triangle?
- jereldc
- · Replies 1 ·
Rotation of a spool about rough ground
- bigevil
- · Replies 2 ·
Balls fired up in air, find their speeds
- physics120
- · Replies 10 ·
Constant speed uphill and increasing velocity with decreasing acceleration
- Jngo22
- · Replies 1 ·
Calculating Young Modulus to GPa
- saray1360
- · Replies 1 ·
Calculating Distance Traveled When Reacting to an Emergency
- Draggu
- · Replies 2 ·
Average force exerted on object by wall
- shadowice
- · Replies 3 ·
What is the acceleration and displacement of a ball rolling up and down a hill?
- Carl_M
- · Replies 3 ·
Collisions and Change in Momentum
- jabbie3
- · Replies 4 ·
Finding elastic constant given mass and elongation
- Prio
- · Replies 4 ·
Finding Time, given velocity and acceleration
- bustin
- · Replies 1 ·
How Do You Solve Basic Angular Motion Problems?
- KD-jay
- · Replies 2 ·
Distance from left end of beam to rope attachment point
- TG3
- · Replies 5 ·
What Does the Scale Read in Different Elevator Scenarios?
- nofinga911
- · Replies 7 ·
Kinetic Energy Calculation Using Average Velocity
- renob
- · Replies 5 ·