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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Velocity function of a variable force
- Piamedes
- · Replies 7 ·
What is the angular speed of the rotating wheel?
- chamonix
- · Replies 6 ·
Secondary Craters: Kinetic Energy & Ejection Velocity
- Kreizhn
- · Replies 3 ·
The Transformation from S to S''Relative Speed Between Frames S and S
- Domnu
- · Replies 3 ·
What is the Impulse and Average Force in a Collision between a Ball and Wall?
- Ready2GoXtr
- · Replies 9 ·
Fusion vs Fission: Energy Releasing Comparison
- solars
- · Replies 8 ·
Girl falling out of helicopter - kinematics
- solars
- · Replies 7 ·
Rotational Kinetic Energy Question (Regarding the Earth)
- zmoose27
- · Replies 2 ·
Momentum and velocity/position vectors
- deborahlane
- · Replies 4 ·
Point charge suspended between capacitor plates at 22° deflection angle
- waleye262
- · Replies 7 ·
Rotational Dynamics of a ring of mass
- mizzpink
- · Replies 5 ·
Beat freuqency of a saxophone and trombone at middle A (440 Hz)
- solars
- · Replies 6 ·
Calculating Electrostatic Force: q1 and q2
- Laxman2974
- · Replies 1 ·
What is the Average Force Exerted by a Wall on a Bouncing Ball?
- student 1
- · Replies 6 ·
Capacitance Vs Frequency and Voltage
- wisdomsearch
- · Replies 3 ·
Lawn mower accelerated from rest to 1.5 m/s in 2.5 s
- Larrytsai
- · Replies 13 ·
Investigation: Mechanical Energy in a Pendulum
- trossi
- · Replies 1 ·
Heat transfer calorimeter question
- borusik
- · Replies 3 ·
Determine the Magnitude of Force F
- Nacha
- · Replies 1 ·
Parallel Plate Capacitor True or False
- ysk1
- · Replies 1 ·
How Does Charge Placement Affect Electric Potential and Potential Energy?
- squissv
- · Replies 1 ·
How Do You Calculate Electric Fields and Forces Between Multiple Point Charges?
- squissv
- · Replies 1 ·
Relativity Question: What is the Relative Velocity and Time Elapsed?
- Domnu
- · Replies 1 ·
At Which Value of x is the Magnetic Field Zero?
- K3nt70
- · Replies 2 ·
How Does Time Affect the Velocity of a Kicked Soccer Ball?
- zileas
- · Replies 3 ·
Kirchoff's Rules: Solve P28.19 Circuit
- clairez93
- · Replies 5 ·
Cat and Mouse Chase: Calculating Landing Distance on a 1.5m Table
- pooka
- · Replies 4 ·
Where is Magnetic Force Zero for Two Parallel Wires?
- solars
- · Replies 2 ·
What direction does a compass point towards Earth's magnetic North pole?
- solars
- · Replies 4 ·
Thermodynamics Questions for Helium and Flourine
- Tofuphysics
- · Replies 1 ·
Ball thrown at wall moving toward you at speed w
- Domnu
- · Replies 1 ·
Rotational motion: rod in a tube
- SonOfOle
- · Replies 2 ·
How does the induced voltage change when pulling a coil out of a magnetic field?
- pooka
- · Replies 22 ·
Yo-Yo hovering: rotational motion and torque
- SonOfOle
- · Replies 2 ·
What Forces Act on an Object in Non-Uniform Circular Motion?
- confusedalot
- · Replies 4 ·
Determining displacement using components
- pitaaa
- · Replies 4 ·
Right-hand rule regarding magnetic fields
- clairez93
- · Replies 13 ·
Influence of gravitational force on earth
- ace123
- · Replies 21 ·
PSS 19.1 Turn Down the Volume Part C
- mantillab
- · Replies 3 ·
Decay - How does this notation represent a reaction?
- phyzmatix
- · Replies 2 ·
Phase difference between two sinusoidal waves at a point
- crazyog
- · Replies 1 ·
What is the frequency of the string now?
- crazyog
- · Replies 5 ·
Distance between centers of two suspended lead spheres
- aarunt1
- · Replies 5 ·
Energy levels of electrons excited by photons
- xArcherx
- · Replies 6 ·
Calculating Potential Difference Between Pt A and B
- solars
- · Replies 2 ·
QM: time evolution in an infinite well
- liorda
- · Replies 2 ·
When does Force of Friction = Fnet
- Larrytsai
- · Replies 3 ·
Golf ball projectile motion with unknown initial speed
- zileas
- · Replies 6 ·
How can I find the angle of a projectile from its velocity and equation?
- IBY
- · Replies 49 ·
What Vector Completes the Equation A + B + ? = Resultant Displacement?
- pitaaa
- · Replies 10 ·
What is the astronaut's speed when the spring's length is 1.2?
- lostie100
- · Replies 12 ·
Work from force and displacement vectors
- joe_
- · Replies 10 ·
Average friction force on a 20 kg curling stone
- HelloMotto
- · Replies 3 ·
What laws of motion are involved in the girl's fall while jogging in the park?
- solars
- · Replies 3 ·
Solving Rolling Disk Homework: Find V, ω, KE Rot & Trans
- nopistons93
- · Replies 10 ·
Finding apparent g in a rotating spacecraft from radius and spin rate
- solars
- · Replies 2 ·
Which of these is false about torque
- solars
- · Replies 2 ·
Can a Waterfall Ever Become Supersonic?
- spacethisride
- · Replies 1 ·
Speed Ratio of Two Children with Different Masses
- solars
- · Replies 3 ·
What is the reaction force to gravity on a falling leaf?
- solars
- · Replies 2 ·
Calculating Spacecraft Weight Using Newton's Second Law
- ledhead86
- · Replies 11 ·
Proving a known function of position via Chain Rule
- kylera
- · Replies 4 ·
Thin, Bent Rod, Continuous Charge
- K3nt70
- · Replies 19 ·
Pulley system with 2 kg hanging body and 3 kg body on table
- devanlevin
- · Replies 6 ·
Finding Amplitude for Horizontal Oscillation - 200 g Mass, 2.0 Hz
- nicksim117
- · Replies 15 ·
Resistance and temperature problem; answer does not agree with book
- clairez93
- · Replies 3 ·
Average acceleration with different accelerations
- kylera
- · Replies 2 ·
Why doesn't moon footage at 6x speed look like Earth gravity?
- ls89ca
- · Replies 2 ·
Calculating Revolutions of a Ball Dropped from a Ramp
- smilingsteph
- · Replies 6 ·
Velocity of Electron through potential difference
- jono_69a
- · Replies 3 ·
Wavelength and Fundamental Frequency of Standing Wave on 2m String
- pooka
- · Replies 9 ·
Rotational and translational KE of rolling cylinder on ramp
- smilingsteph
- · Replies 6 ·
Two blocks and a spring and Free Body Diagrams
- Piamedes
- · Replies 10 ·
Magnetic field at center of 60-turn coil with 0.2m radius and 4A current
- pooka
- · Replies 2 ·
Calculate the amount of work done on the box?
- jjl15hid
- · Replies 6 ·
Which Radians to Use in Calculating Phase Constants?
- lostie100
- · Replies 1 ·
How Do You Calculate the Motion of a Golf Ball in Physics?
- noraa
- · Replies 19 ·
Calculate RMS Velocity of Air at 72 cm-Hg, 344.7013 m/s, 22.6 C
- cyclonefb3
- · Replies 1 ·
C. What is the average energy released per fission event in this chain reaction?
- pooka
- · Replies 4 ·
Capacitance Problem; somewhat solved, but units are off
- clairez93
- · Replies 3 ·
Total entropy of the system change?
- GT1
- · Replies 1 ·
What is the time period for a rotating coil in a constant magnetic field?
- chukie
- · Replies 4 ·
Coulomb's Law and microcoulombs
- ramalik
- · Replies 16 ·
Two Insulated Balls: What is the length of each string?
- purduegirl
- · Replies 1 ·
Calculating Crate Acceleration: Force, Friction, and Net Force
- Larrytsai
- · Replies 2 ·
About rounding off for significant figures
- shortydeb
- · Replies 1 ·
Maximum oscillation amplitude for block
- CoasterGT
- · Replies 3 ·
Calculating Electric Field of a Metal Sphere
- chukie
- · Replies 16 ·
Solving Force on Block A in Accelerating Masses Problem
- Piamedes
- · Replies 2 ·
Finding charge on aluminum foil parallel-plate capacitor
- conniechiwa
- · Replies 5 ·
How Do You Calculate Rotations and Time With Uncertainty for Pulsar PSR 1937+21?
- truthfinder
- · Replies 6 ·
How to Calculate the Electric Field Near a Long Charged Wire?
- K3nt70
- · Replies 1 ·
Torque on a Current Loop in a B Field
- purduegirl
- · Replies 5 ·
Electric field of a charged arc
- brett812718
- · Replies 9 ·
How Long Does a Ball Take to Hit the Ground from a 12.5m Building?
- jameo15
- · Replies 3 ·
Why use x-rays to study crystals?
- chukie
- · Replies 2 ·
Halley's Comet speed at perihelion using energy conservation
- Jtappan
- · Replies 2 ·
The Relationship between work, force and distance
- tascja
- · Replies 4 ·
Work-energy theorem in relation to the velocity of two masses
- lfused
- · Replies 9 ·
Gas Expansion: The Property of Filling Volume and Shape
- vannenberg
- · Replies 2 ·