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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Concept of Potential Energy -vs Electric Potential in an EField
- Schoomy
- · Replies 1 ·
The Fundamental frequency of an open organ pipe
- jen0519
- · Replies 2 ·
Why is work defined as force times distance, not force times time?
- aloshi
- · Replies 1 ·
A rebound and kinetic energy problem with a little specific heat
- redsmithers91
- · Replies 3 ·
Boat crossing river with 4 m/s current to reach dock directly across
- jamesdubya
- · Replies 12 ·
Car horn Doppler effect with beats from wall reflection
- meeklobraca
- · Replies 1 ·
Calculating Power Output of Tension T on Mass M at Incline θ
- EV33
- · Replies 1 ·
Calculating Tension Force for Different Masses
- bentrinh
- · Replies 1 ·
Calculate the Speed of a Baseball with Mass 145g and Kinetic Energy 122 J
- njohnson222
- · Replies 3 ·
A sphere with a given mass floating in water.
- qwerty11
- · Replies 10 ·
Calculating Net Gravitational Force Between Multiple Objects
- phyhelpme
- · Replies 10 ·
Satellite moving in a stable circular orbit
- ronartest
- · Replies 7 ·
When and how do I use sin and cos regarding 2-D collisions?
- JohnMC
- · Replies 4 ·
Maximum height Superman can jump at 86.9 degrees with 181 m/s initial velocity
- theoblivin8r
- · Replies 3 ·
Wave problem It's been driving my crazy for last hour
- asd1249jf
- · Replies 3 ·
Elastic Collision: Kinetic Energy and Spring Compression
- geauxKTM
- · Replies 3 ·
Plank tipping point with painter on overhang
- qwerty11
- · Replies 7 ·
How Do You Calculate the Capacitance of a Multi-Layer Spherical Capacitor?
- fluidistic
- · Replies 4 ·
How Do Hearing Aids Amplify and Filter Sound?
- Unstoppable13
- · Replies 1 ·
What is the Velocity of the Combined Freight Cars in a Collision?
- jazzysoshort
- · Replies 2 ·
Upward Acceleration of an Object
- uazaga
- · Replies 13 ·
Can radar show twice the car's speed due to relative velocity?
- uicha
- · Replies 3 ·
Calculating the Force on a 65kg Barrel Rolling Down a 1.2m Ramp
- Brittykitty
- · Replies 5 ·
Torque of a particle at position (i+4j)m with force (6i+3j)N
- qwerty11
- · Replies 11 ·
Bad Movie Physics : How do I prove this wrong?
- amandacate
- · Replies 3 ·
Fractional Reduction of Earth's Gravity at Halfway to Center
- Kaxa2000
- · Replies 18 ·
Projectile Motion - Niagra Falls
- crono_
- · Replies 4 ·
Magnetic field at a point and differential i
- fluidistic
- · Replies 3 ·
Understanding Particle Motion and Stable Equilibrium in a Potential Energy Graph
- darksummoning
- · Replies 2 ·
How long does a ball stay in the air when hit at 18 m/s?
- ash312
- · Replies 3 ·
Calculate Speed on a Circular Track with Radius 135m
- Brittykitty
- · Replies 6 ·
Momentum. I did all of them, can u check if i got them right? thank you
- Ronaldo21
- · Replies 1 ·
How Does a Pulley System Affect Force and Energy Transfer?
- Ronaldo21
- · Replies 1 ·
How Do You Calculate the Initial Speed of a Bullet Using Mass and Height?
- ems1312
- · Replies 1 ·
Why Is the Bond Order of B2 2- Calculated as 1.5?
- stacker
- · Replies 1 ·
Solving a Physics Problem: Finding Pole Mass, Forces & Distance
- PhilCam
- · Replies 1 ·
How Can You Verify and Complete Parametric Equations for Projectile Motion?
- DomoArigato12
- · Replies 1 ·
Finding the phase angle of a pendulum swinging.
- meeklobraca
- · Replies 1 ·
Calculating Angular Speed of a Merry-Go-Round After Adding a Child
- phyhelpme
- · Replies 4 ·
Water flow speed from piston moving in connected tubes
- PhilCam
- · Replies 4 ·
Net force on roof from wind? Using Bernoulli's eq?
- ronartest
- · Replies 2 ·
Elevator free fall with shock absorbers and spring constant
- electriceel
- · Replies 4 ·
Bead sliding down a frictionless wire: speed at points B, D, E
- Ronaldo21
- · Replies 5 ·
What particle mass escapes a planet with escape velocity and thermal motion?
- nitefalls
- · Replies 3 ·
Yes, that is correct. Good job!
- Unkownentity
- · Replies 22 ·
How Much Force Does Water Apply to a Sandbag Dropped from a Hot-Air Balloon?
- Brittykitty
- · Replies 1 ·
Calculating Moment of Inertia of Grinding Wheel - 45 N Brake Applied
- rent981
- · Replies 1 ·
Refrigerator and its light bulb
- wildanpradana
- · Replies 2 ·
About VT(threshold voltage) of MOS
- xhwubai
- · Replies 1 ·
What happens to the lost energy in these situations?
- Kaxa2000
- · Replies 7 ·
What Is the Initial Speed of a Block Given Friction and Distance?
- schyuler2
- · Replies 1 ·
Water flowing in and out of a bucket
- Pinkk
- · Replies 1 ·
Determination of the spring constant of a jumping spring
- Tony Whelan
- · Replies 2 ·
Finding unknown frequency from beats?
- Idrees
- · Replies 6 ·
Sound and hearing - conceptual question?
- Kaxa2000
- · Replies 1 ·
What happends when we oscillate three pendulums next to each other?
- Idrees
- · Replies 7 ·
Ferris wheel problem - vertical circles and centripetal acceleration
- therest
- · Replies 1 ·
Airplane Vector: Solving for Direction of Flight
- EV33
- · Replies 3 ·
Sattelite orbiting mars, work done to change distance.
- mark_dollar
- · Replies 4 ·
Find the maximum velocity of the block
- PhilCam
- · Replies 9 ·
Constructive Interference of Sound
- lafalfa
- · Replies 20 ·
Kinetic Energy, Work Done, and Inclines
- orbits
- · Replies 2 ·
Is work done by gravity positive or negative when walking down stairs?
- rent981
- · Replies 6 ·
Angular Momentum, Torque, and Acceleration for a Moving Body
- itr
- · Replies 13 ·
Lattice Energy - Hard question - I keep getting wrong answer
- stacker
- · Replies 5 ·
Electromagnetic problems 4 and 7 from EM4WS5
- Rastabot
- · Replies 1 ·
Work Done by Tension of Mass on a string
- rent981
- · Replies 10 ·
Finding the force of water in a pool on a vertical wall
- chenying
- · Replies 8 ·
What is the lattice energy of LiI? Given the information below.
- stacker
- · Replies 1 ·
Derive velocity function for pendulum
- quantum13
- · Replies 1 ·
Calculating Velocity & Displacement of a Dropped Object
- Kaxa2000
- · Replies 4 ·
Projectile Motion of Car Problem
- triamanda
- · Replies 1 ·
Finding Net Force with the Coefficient of Friction
- triamanda
- · Replies 2 ·
Loop-the-loop Conservation of energy
- erice
- · Replies 4 ·
Conical pendulum speed at 25.5 degrees with 14.6 kg mass
- sirfinklstin
- · Replies 3 ·
How Long Will It Take to Stop a Sled?
- srishtig
- · Replies 2 ·
Buyoancy Question the day before the final
- addnecro
- · Replies 12 ·
Finding phase constant for a spring oscillator at t = 0.69 s
- BlackHayze
- · Replies 7 ·
Calculating Average Speed of Ball in First 5 Seconds
- schyuler2
- · Replies 7 ·
What Are the Velocities of Hockey Pucks After a Collision?
- tamir102
- · Replies 2 ·
What Height Will the Projectile Strike the Barrier?
- schyuler2
- · Replies 1 ·
How Do You Calculate Rocket Motion Parameters Over Time?
- Dulle
- · Replies 1 ·
Can I calculate the EMF for a moving conducting rod perpendicular to a wire carrying current?
- noleknight16
- · Replies 10 ·
Finding magnitude of the tension of a cord
- schyuler2
- · Replies 1 ·
Is the Combined Force Exerted by Student and Fish 80N?
- Brittykitty
- · Replies 1 ·
What is the force exerted on a car and driver during acceleration?
- Brittykitty
- · Replies 1 ·
Radiocarbon Dating: % of C-14 Remaining in 41,000 Yr Sample
- Nope
- · Replies 5 ·
How Do You Calculate the Velocity of a Corner of a Falling Tilted Plate?
- rosie2985
- · Replies 1 ·
What Would We See if the Sun Suddenly Darkened?
- v_pino
- · Replies 1 ·
Calculate the magnetic field at 2 points (checking my result)
- fluidistic
- · Replies 6 ·
Projectile Motion Problem with stunt driver
- orbits
- · Replies 2 ·
Calculating the forces in a dropped object's impact
- Greywolfe1982
- · Replies 1 ·
Finding velocity from force and distance for a 2.59 kg object
- xlogit3k
- · Replies 3 ·
Tricky Collision Problem: Solving for Block Masses and Heights
- jj2443
- · Replies 3 ·
Air Navigation and Course Correction. Semester exam in 45 minutes.
- pablot93
- · Replies 1 ·
Which ball will hit the ground first?
- Idrees
- · Replies 4 ·
Angular velocity of a Rod after a Ball hits it.
- cocoon
- · Replies 6 ·
How do you identify converging vs diverging lenses from principal rays?
- rei
- · Replies 6 ·
Force acted on a falling object.
- JZC
- · Replies 4 ·