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 I calculate static and dynamic pressure for a wind tunnel lab report?
- octo17
- · Replies 1 ·
Amount of work in displacing a brick
- rudransh verma
- · Replies 40 ·
Why use P=V²/R instead of P=I²R for resistors in series
- bluesteels
- · Replies 9 ·
Newton's Cradle same diameter, different mass
- lostagain
- · Replies 1 ·
Two balls one thrown up and other down
- rudransh verma
- · Replies 16 ·
Same frequency sounding different
- vcsharp2003
- · Replies 23 ·
How can I find "dx" in a straight line of electric charge?(Picture)
- MatinSAR
- · Replies 2 ·
Time dilation and length contraction for a rocket
- PainterGuy
- · Replies 12 ·
The velocity of the particle as a function of time
- yesmale4
- · Replies 3 ·
Direction of of the velocity vector for particles in a sound wave
- vcsharp2003
- · Replies 7 ·
How Is the Electric Field Calculated for a Point Outside a Charged Ring?
- MatinSAR
- · Replies 11 ·
Point charge in cavity of a spherical neutral conductor
- guyvsdcsniper
- · Replies 8 ·
Finding the initial velocity of a thrown object using its time to max height
- MaronKun
- · Replies 7 ·
Circular aperture diffraction resolution criterion
- AManFromSpace
- · Replies 7 ·
Experimental investigation of Faraday's Law of Induction
- billyt_
- · Replies 6 ·
The time for a proton to reach a certain velocity
- dirb
- · Replies 4 ·
Exam Prep: Electric Field - Is It Zero?
- bluesteels
- · Replies 2 ·
Finding launch angle and velocity boost for Hohmann transfer to moon
- dirb
- · Replies 1 ·
Work per particle of a NaCl chain
- guyvsdcsniper
- · Replies 5 ·
Why do I have a bending moment and an axial displacement here?
- Mech_LS24
- · Replies 6 ·
Kinematics - can't find the initial velocity according to the image
- Physics_learner
- · Replies 2 ·
Should I Consider the Electric Field Outside a Uniformly Charged Sphere?
- guyvsdcsniper
- · Replies 2 ·
Which object is in static equilibrium?
- Pawn
- · Replies 12 ·
Why does work by gravity use vertical displacement, not displacement along the incline?
- simphys
- · Replies 7 ·
Inconsistent problem about centrifugal/contact force
- FranzDiCoccio
- · Replies 12 ·
Heat transfer and entropy change for water vaporizing at 10 MPa
- Nick Goodson
- · Replies 2 ·
Work done on a pendulum by gravity
- simphys
- · Replies 7 ·
Displacement Electric Field Outside Dielectric Material
- RyanUSF
- · Replies 6 ·
Potential Energy of the Atmosphere
- boopdebeep
- · Replies 1 ·
Changing capacitance effect on ripple in full rectification circuit
- kaiiliana
- · Replies 4 ·
The distance traveled by a molecule at a specific temperature
- Hananism
- · Replies 5 ·
Why is work done zero when force areas cancel on both sides of x-axis?
- songoku
- · Replies 6 ·
Hot air balloon mass including increase in mass with balloon volume
- Finn_J
- · Replies 8 ·
Orientation of Major Axis for polarized light
- Blanchdog
- · Replies 3 ·
Does a ball thrown upward have the same time of flight as one thrown at an angle?
- crism7
- · Replies 14 ·
Shock absorber design for egg-safe rocket landing at 20m/s
- greg_rack
- · Replies 25 ·
Electric potential and field near parallel dipoles
- coulthardb
- · Replies 2 ·
[Optics] Questions on the Stokes shift
- rinalai
- · Replies 1 ·
Finding the acceleration of the ball in contact with the ground during bouncing
- Lay1
- · Replies 16 ·
Work required to extract heat from a refrigerator
- guyvsdcsniper
- · Replies 2 ·
Ideal gas law- Find the pressure
- Woopa
- · Replies 8 ·
Where does the equation C=2*sqrt(km) for Critical Damping come from?
- physics51
- · Replies 5 ·
Fluid Mechanics: Fluid Transfer Between Two Reservoirs at Different Heights
- ShaunG123
- · Replies 7 ·
Momentum conservation for a trolley ejecting oxygen gas
- songoku
- · Replies 7 ·
Finding an expression for the efficiency of a heat engine
- guyvsdcsniper
- · Replies 5 ·
Do i need to find the x and y components?
- crism7
- · Replies 2 ·
Two blocks against a wall: why does friction point upward on each block?
- rudransh verma
- · Replies 19 ·
A satellite in orbit in a system with one planet and two moons
- lorenz0
- · Replies 1 ·
How does tightening a guitar string affect its frequency?
- vcsharp2003
- · Replies 23 ·
How to take a moment into account for deflection of a beam
- Mech_LS24
- · Replies 8 ·
Find Time to Reach Top of Beaker (10 cm)
- Orlo
- · Replies 16 ·
Cartesian and polar coordinate in Simple pendulum, Euler-Lagrange
- Father_Ing
- · Replies 4 ·
Voltage Null Points of a Mechanical Meter Bridge
- Shreya
- · Replies 2 ·
Electric field due to three point charges
- emmanual
- · Replies 4 ·
Finding distributed load q in deformable solid traction problem
- Lantean
- · Replies 5 ·
Magnetic field's effect on a charged particle's motion
- agnwib
- · Replies 9 ·
Units of the dot product D·E in SI units
- millahjallar
- · Replies 20 ·
How does sound reflect at the open end of an organ pipe?
- vcsharp2003
- · Replies 4 ·
What is the Proof for Newton's Law of Cooling Formula Using Quadratic Equation?
- guyvsdcsniper
- · Replies 6 ·
Microstates for a gas of hard spheres in a box
- happyparticle
- · Replies 8 ·
Facts about waves - UK BMAT exam question
- AndrewMorris
- · Replies 5 ·
Finding kinetic energy and initial velocity of a cart over time
- amelia2222
- · Replies 6 ·
Show that the solutions to the Fresnel Equation are real and positive
- Blanchdog
- · Replies 5 ·
Direction of motion of points on a rope as a wave travels
- vcsharp2003
- · Replies 7 ·
A truck and a car coming to a stop
- rudransh verma
- · Replies 24 ·
F = ma for a lift (elevator) carrying passengers
- hendrix7
- · Replies 5 ·
Electric field lines of H2O molecule
- guyvsdcsniper
- · Replies 5 ·
Ideal index of refraction for single layer AR coating
- Blanchdog
- · Replies 4 ·
Electric Field acting on a point charge
- guyvsdcsniper
- · Replies 23 ·
Electric Field as a function of r, evaluating bounds
- guyvsdcsniper
- · Replies 4 ·
Boundary conditions ##\vec{B}## and ##\vec{H}##
- happyparticle
- · Replies 3 ·
To find the angle between the ground and rods in limiting friction
- gnits
- · Replies 5 ·
Calculate the total force on the Earth
- anajonicholson
- · Replies 3 ·
Does Acceleration Affect Tension in a Sphere and Car System?
- rudransh verma
- · Replies 18 ·
Pulley and weights hanging from spring balance
- rudransh verma
- · Replies 8 ·
2D kinematics -- Calculate the acceleration of the jumping athlete
- Stewkatt
- · Replies 3 ·
What's wrong with my solution? -- Area moment of inertia
- mobsaleh
- · Replies 4 ·
Correct Angle for FSW in Fabry-Perot Interferometer
- Blanchdog
- · Replies 2 ·
How to find the angle where the required pull is minimum?
- simphys
- · Replies 25 ·
What is the tension in a rope when a monkey accelerates up?
- rudransh verma
- · Replies 66 ·
Displacement and average velocity for object with three motion stages
- Stewkatt
- · Replies 8 ·
Helix Angle or Pitch Angle for this Solenoid carring Current?
- magiladd
- · Replies 4 ·
Three weights and two pulley problem
- rudransh verma
- · Replies 13 ·
Verification of a problem -> force needed for car stopping in 1.8cm
- simphys
- · Replies 10 ·
I understanding a concept about motor efficiency
- pizzamakeren
- · Replies 11 ·
Time dependant Potential Energy in ion trap
- Anmoldeep
- · Replies 1 ·
What is magnitude of dynamic force?
- Mech_LS24
- · Replies 9 ·
Potential Difference over Capacitors in Series
- nmfowlkes
- · Replies 6 ·
Why does a test charge near a conductor reach equilibrium?
- nmfowlkes
- · Replies 2 ·
Disk with rod attached rotating about the center of the disk
- lorenz0
- · Replies 13 ·
Magnetization formula for neodymium magnet vs temperature
- IBphysics
- · Replies 12 ·
Resulting force of an object with variable movement
- Thietlan
- · Replies 9 ·
Gravitational Field and Potential at certain point
- songoku
- · Replies 20 ·
What factors affect stopping and directional control in basketball shoes?
- potatonecromancer
- · Replies 5 ·
Frequency of Oscillations of a Bead Resting on a Gas
- penguin46
- · Replies 19 ·
Question on a Gauss's Law problem
- dliu1004
- · Replies 1 ·
Max initial angle so that the projectile range keeps increasing
- simphys
- · Replies 18 ·
Derive ##\dfrac{\rho_1}{\rho_2}=\dfrac{T_2}{T_1}##
- Istiak
- · Replies 22 ·
Why Did My Second Approach to Finding the Block's Acceleration Fail?
- guyvsdcsniper
- · Replies 2 ·
Boundary conditions (E and D) for a dielectric sphere
- happyparticle
- · Replies 78 ·