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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Calculating the speed of an object
- Nal101
- · Replies 2 ·
How Fast Must an Astronaut Spin for 2.89g Acceleration?
- africanmasks
- · Replies 1 ·
Photoelectric effect with free electrons.
- Ed Aboud
- · Replies 1 ·
What Does the 'Kissing Circle' Reveal About Momentum and Net Force?
- Nal101
- · Replies 1 ·
Charge Inside A Non-Conductive Charged Spherical or Cylindrical Shell
- 1st1
- · Replies 4 ·
How Is the Effective Stiffness of an Interatomic Bond Calculated in Iron?
- magma_saber
- · Replies 1 ·
Calculating K.E: 0.0136 J Solution
- sfx81
- · Replies 2 ·
Ball Momentum Calculation: A Simple Guide
- PolyFX
- · Replies 1 ·
Calculate the flux of the indicated electric field vector through the circle
- cwatki14
- · Replies 4 ·
Wave Interference Pattern Question
- wilson_chem90
- · Replies 1 ·
Dimensions of Force, Pressure: F, p
- you_of_eh
- · Replies 4 ·
Physics: When a 58-g tennis ball is served?
- triplel777
- · Replies 6 ·
Gravitational Force on Object Stationary to Earth's Surface
- semc
- · Replies 10 ·
Friction and constant velocity
- ffrancis
- · Replies 3 ·
Coefficient of static & kinetic friction
- ffrancis
- · Replies 2 ·
What is the Initial Charging Current and Charge Stored on a Capacitor?
- alexburns1991
- · Replies 4 ·
What are the key concepts in Special Relativity?
- awri
- · Replies 2 ·
Algebra in Constant Motion Derivation.
- sponsoredwalk
- · Replies 1 ·
Find the Speed of a Block: Force, Friction, and Time
- Zhalfirin88
- · Replies 6 ·
Ball thrown to cliff (projectile problem)
- Bryon
- · Replies 9 ·
How to Calculate Distance and Velocity in a Police Chase Scenario?
- Rker
- · Replies 3 ·
Two-body elastic collisions in two dimensions
- Zarathustra1
- · Replies 4 ·
Discover Acceleration Questions and Answers with Given Data
- 1irishman
- · Replies 4 ·
How Do Electron and Positron Speeds Relate to Their Charge and Separation?
- nns91
- · Replies 1 ·
How Does Air Resistance Impact Force During an Egg Drop Project?
- lee132
- · Replies 1 ·
Monochromatic transverse wave problem
- Gil-H
- · Replies 2 ·
Is the Momentum Calculation for the Circus Animals Accurate?
- Ion1776
- · Replies 2 ·
Centrifuge Acceleration Calculations
- kser
- · Replies 5 ·
Finding necesary Muzzle Velocity?
- sciwizeh
- · Replies 10 ·
Planetary Physics Homework: Mass of Planet Without Satellite
- fredrick08
- · Replies 1 ·
Solving the Kinetic Friction and Tension of Two Blocks
- mooney82
- · Replies 1 ·
Waiting for a Friend: Solving a Time Difference Problem
- black_hole
- · Replies 1 ·
How to Determine E Field from Multiple Infinite Sheets?
- {taylor}
- · Replies 1 ·
Acceleration of oneself to the moon
- psilovethomas
- · Replies 10 ·
Calculate the buoyant force of a liquid
- semc
- · Replies 4 ·
Calculating how to overcome drag
- rosie_burk
- · Replies 1 ·
SAT Physics Help: Understanding Thermal & Electric Forces
- bl75
- · Replies 2 ·
Fixing a Minor Circuit Mistake - Learn From My Experience
- Oijl
- · Replies 7 ·
Capacitance Circuit - Voltage and Charge
- PerfPhys
- · Replies 1 ·
Kinematics: 3 unknowns, find Time.
- Rubix
- · Replies 7 ·
How Do I Solve for X in This Complex Physics Equation?
- pookisantoki
- · Replies 5 ·
Fallin with constant speed what is the force of air resistnace
- kennymr22
- · Replies 1 ·
How Far East Did the Backpacker Walk?
- crono_
- · Replies 3 ·
What is the acceleration of a car on a semicircular track?
- tjohn101
- · Replies 5 ·
Find the friction force impeding its motion
- kwehner
- · Replies 2 ·
Solving Head Start Questions for Cars A & B Races
- halbe1
- · Replies 1 ·
Physics football tackle problem
- briguy1812
- · Replies 1 ·
Graphing question: Reversal of x and y axis & effect on slope and y-intercept
- unigal13
- · Replies 1 ·
Acceleration as a function of time
- halbe1
- · Replies 5 ·
Package Drop Time Calculation for Ascending Helicopter
- halbe1
- · Replies 10 ·
How Does Kinetic Friction Affect Acceleration and Speed of a Block?
- jrk613
- · Replies 1 ·
Finding Initial Velocity with Given Acceleration Ratio
- jacksonpeeble
- · Replies 2 ·
Minimum Force for Moving a Sled on a Horizontal Surface
- tutojean
- · Replies 3 ·
How Does a Sprinter's Acceleration Affect Race Time?
- SuperCass
- · Replies 1 ·
Is the Pulley System in Equilibrium?
- engineer248
- · Replies 3 ·
Force on object at angle to acceleration
- djtsmith007
- · Replies 3 ·
How Do You Solve for g in the Equation a = 1/(1+C) g sin θ?
- einsteinette
- · Replies 3 ·
What Is the Maximum Mass and Weight That Can Be Moved Without Breaking the Wire?
- jewjew
- · Replies 1 ·
Physics Problem, cant find mistake, okz help
- Ion1776
- · Replies 1 ·
Chasing Cats and Dogs: Solving for Time and Distance
- ILC grade 11
- · Replies 2 ·
How high is the cliff and speed of sound?
- katamoria
- · Replies 6 ·
How to Find Heat Absorbed and Entropy Change in a Copper Block?
- dancergirlie
- · Replies 3 ·
Calculating Magnitude & Direction of Net Force on Charge A
- Sprite101
- · Replies 5 ·
Finding Initial Velocity w/o Time to clear a specific height
- jkcali2ooo
- · Replies 8 ·
Help with this problem on non-uniform circular motion?
- tjohn101
- · Replies 16 ·
Point Charge accelerated by charged ring
- riincanavi1
- · Replies 2 ·
How Do You Solve for X in a Basic Statics Problem?
- Jim Newt
- · Replies 1 ·
Circular motion jet fighter problem
- bcjochim07
- · Replies 1 ·
A Question about Frictional Forces
- peterpam89
- · Replies 2 ·
Very Basic Physics that I'm struggling on
- aguycalledwil
- · Replies 1 ·
Elastic collision neutron problem
- thornza
- · Replies 12 ·
Displacement, velocity and acceleration
- pookisantoki
- · Replies 1 ·
How can I find the velocity of a proton?
- peaceinmideas
- · Replies 5 ·
Rocket Thrust Balancing Gravity
- Piamedes
- · Replies 4 ·
Rocket velocity/displacement problem, HELP
- UNDEAD WAFFLE
- · Replies 1 ·
2-Dimensional Motion (non-trajectory)
- joeG215
- · Replies 8 ·
Free Falling Bodies: Calculating Time for Wrecking Ball
- pookisantoki
- · Replies 5 ·
Calculating Multistage Rocket Velocities
- Piamedes
- · Replies 2 ·
Normal force at the top of a hill
- Tin Man
- · Replies 3 ·
Solving Speed & Velocity: Backpacker Walks 5.58km West & East
- pookisantoki
- · Replies 4 ·
Basic Kinematics Questions - What's wrong with my answers?
- Rker
- · Replies 6 ·
Calculating Displacement of a Diver in Free Fall
- pookisantoki
- · Replies 3 ·
Help with these HW problems involving grav acceleration, circular motion, etc?
- tjohn101
- · Replies 1 ·
F=Ma Problem Help: Kinetic Energy of Rotating Device
- euroazn
- · Replies 2 ·
How does mass affect the launch of a catapult and the projectile flight?
- ericahlstedt
- · Replies 1 ·
A rock rolling down an incline-velocity and force
- NDbogan
- · Replies 3 ·
A silly question that im really stuck on after 4 hours of staring at it
- ILoveCollege
- · Replies 3 ·
Kinematics - finding time given height and acceleration
- indietro
- · Replies 5 ·
Understanding the Relationship between Energy, Frequency, and Wavelength
- semc
- · Replies 1 ·
Initial velocity when deacelerating at a constant rate
- xc630
- · Replies 1 ·
What was the car's velocity at t=0?
- indietro
- · Replies 4 ·
Uniform electric field and a proton
- tag16
- · Replies 6 ·
Solve a Physics Problem: Finding Time in the Air for a Kangaroo Jumping 3.0m
- rakesh44
- · Replies 1 ·
Can someone me do this problem
- rakesh44
- · Replies 3 ·
Physics highest point reached by skateboarder
- triplel777
- · Replies 9 ·
How Much Work Does Friction Do on a Crate Sliding Down a Ramp?
- cbeeson23
- · Replies 2 ·
Work done by frition on a crate
- cbeeson23
- · Replies 6 ·
Golf Ball Released from Tall Building: Velocity & Impact
- prowlerplayer
- · Replies 1 ·
How Does Air Resistance Impact Projectile Motion in Sports?
- hidajua
- · Replies 1 ·
What is the Maximum Height a Basketball Reaches When Thrown Upward?
- swirly90
- · Replies 1 ·