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 Does Phase Change Affect Destructive Interference in Radio Waves?
- Arctangent
- · Replies 4 ·
How Do You Calculate Stopping Distances and Projectile Motion?
- thschica
- · Replies 2 ·
How Do You Calculate Thermal Equilibrium and Ice Formation Times?
- Goalcard
- · Replies 8 ·
Why is the x component of a vector cos(theta) and not sin(theta)?
- seang
- · Replies 4 ·
Object being pushed up an inclined plane
- Bushman
- · Replies 4 ·
Pressure gradient in a rotating centrifuge tube at angular velocity w
- Omar.Castillo
- · Replies 1 ·
Finding tree height from mirror image coverage
- unctarheels1
- · Replies 3 ·
Calculating the Minimum Height for a Safe Amusement Park Ride: A Physics Problem
- courtrigrad
- · Replies 3 ·
Fallacy in Work-Energy theorem?
- rushil
- · Replies 6 ·
What was the weight of the person?
- beaniegoober
- · Replies 3 ·
Are explosions soley the result of expanding gas?
- VonWeber
- · Replies 5 ·
Can Electrons Jump Between Energy Levels if the Energy is Not Precisely Matched?
- rushil
- · Replies 2 ·
What type of problem is this? Physics 1 practice final.
- chloeishere
- · Replies 3 ·
Electric fields and parallel plates
- F.B
- · Replies 1 ·
Solving a Two-Box Frictionless Physics Problem
- Alw
- · Replies 2 ·
What are the overtones of a clarinet?
- gapgirl1010
- · Replies 3 ·
Finding Electric Field on rod or ring?
- Brad_1234
- · Replies 1 ·
Max acceleration of mass-spring system with 0.50 kg mass and 230 N/m spring constant
- hshphyss
- · Replies 1 ·
What happens to electrons when atoms collapse into neutron stars?
- PhilipF
- · Replies 1 ·
Maximum kinetic energy for force F=F0*e^(-kx)
- brad sue
- · Replies 3 ·
Mass of Steam Needed for 1kg of Ice to Yield 20°C Water
- heelp
- · Replies 3 ·
How do heat engines work?
- cheez
- · Replies 3 ·
Angular speed and rotation problem
- suspenc3
- · Replies 4 ·
Calculate the ideal (Carnot) efficiency of a heat engine
- lilkrazyrae
- · Replies 6 ·
Forces on an inclined plane: how does the angle affect the normal force and friction?
- avb203796
- · Replies 3 ·
Calculating Spring Constant with Hook Weight Included
- burnside
- · Replies 2 ·
Specific heat; calormetry (no clue)
- heelp
- · Replies 1 ·
How Does the Weight of a 1500kg Animal Affect Earth and a Moon-Like Planet?
- avb203796
- · Replies 5 ·
How Does a Rocket's Trajectory Change Near a Star?
- skizm240
- · Replies 1 ·
Air pressure in a tire when temperature increases from 15°C to 46°C
- cdm1a23
- · Replies 3 ·
Polarized Free Electrons vs Polarity of Static Magnet
- Buckeye
- · Replies 2 ·
Wave properiies of supersonic jets
- gapgirl1010
- · Replies 4 ·
Maximum weight that helium balloon can lift
- Raiden9
- · Replies 1 ·
Football Throwing Problem: Solving for Horizontal Catch Distance
- ckymike
- · Replies 3 ·
How does gravity cause movement in a balance?
- eosphorus
- · Replies 14 ·
Energy conservation and e = mc^2
- iommi0028
- · Replies 3 ·
Minimum angle for a ladder against a frictionless wall
- naeblis
- · Replies 1 ·
Tetherball radius doubling: why does momentum seem non-conserved?
- eosphorus
- · Replies 8 ·
How does power relate to intensity?
- beanryu
- · Replies 4 ·
Final Angular Speed: 0.5m, 0.25kg, 23rad/s, 0.33Nm
- wholf09
- · Replies 3 ·
Moment of inertia / torque question
- ptlffrty
- · Replies 9 ·
Simple force down an inclined plane question.
- wasteofo2
- · Replies 7 ·
Calculating Escape Velocity for Reaching Altitude of 800km
- naeblis
- · Replies 5 ·
The Power of Heat: 16x More Energy at 550°C
- lilkrazyrae
- · Replies 3 ·
Solving for Extension Needed to Reach Target Distance with a Spring
- SS2006
- · Replies 3 ·
Projectile Motion of Diver Problem
- stuart_5
- · Replies 5 ·
Temperature at interface between aluminum and iron rods
- JJMezzapesa
- · Replies 3 ·
Simplifying a compound pendulum equation
- LENIN
- · Replies 2 ·
Having trouble on two problems- magnetism/inductance
- Grandmas
- · Replies 1 ·
Find angular speed of a point on the earth
- suspenc3
- · Replies 1 ·
Forces on an Accelerating Object
- sweet877
- · Replies 10 ·
How Do You Add Angular Frequencies in Wave Simulations?
- Ginny Mac
- · Replies 1 ·
Pendulum problem - What is the magnitude of the torque?
- suspenc3
- · Replies 1 ·
Coefficient of Friction of brakes
- sweet877
- · Replies 12 ·
Finding Angular Acceleration for Easy Rotation Quest
- suspenc3
- · Replies 1 ·
How Does a Spring Affect Maximum Compression in a Totally Inelastic Collision?
- suspenc3
- · Replies 3 ·
Zero Electric potential and null electric field
- fmilano
- · Replies 1 ·
Center of Gravity: Finding 0.387m from 1kg Sphere?”
- Greenrose
- · Replies 5 ·
Calculating the work done by friction
- NutriGrainKiller
- · Replies 11 ·
Calculating Resultant Velocity of Colliding Particles - Homework Check
- elle
- · Replies 2 ·
Conservation of Energy and calculating potential energy?
- suspenc3
- · Replies 5 ·
Linear velocity of arm segments in volleyball spike
- stuart_5
- · Replies 1 ·
What is the lift force exerted by the air on the rotors?
- thschica
- · Replies 3 ·
Centripetal force of a block on a string
- physics10
- · Replies 4 ·
What Force Lifts the Bicycle Wheel Off the Ground?
- physics10
- · Replies 4 ·
Finding hinge force on a uniform boom with tension wire
- naeblis
- · Replies 3 ·
Calculate Temperature for Closed Expansion Joint on Steel Bridge
- lilkrazyrae
- · Replies 5 ·
Temperature change boiling water
- lilkrazyrae
- · Replies 6 ·
How Do Two Friends Balance a 200kg Crate Up Stairs?
- Greenrose
- · Replies 1 ·
Solve Collision Lab: Mass 1 & 2 = 0.541 kg | Error %?
- F.B
- · Replies 3 ·
Friction Question an incline plane with two angles
- SS_KingTiger
- · Replies 1 ·
Calc 320g H2O Melting Ice @ 68°C
- lilkrazyrae
- · Replies 3 ·
How Far Must a Glider Travel to Achieve 14 Joules of Work with a 19N Weight?
- lando45
- · Replies 8 ·
Change in internal energy when system absorbs heat and does work
- lilkrazyrae
- · Replies 6 ·
2 questions (weightlessness and SHM)
- KatieKangaroo
- · Replies 5 ·
Left Hand Rule for a Straight Conductor
- 29 clicks
- · Replies 1 ·
PHysics (Torque?) problem BAFFLING
- coey
- · Replies 2 ·
Optics - Beam illuminating coin under water
- frozen7
- · Replies 1 ·
Finding the sun's surface temperature from solar radiation intensity
- smallbadwolf
- · Replies 9 ·
Mechanical Energy: A to B, Forces -70J/+50J
- nrc_8706
- · Replies 6 ·
A Problem on Thermal Equilibrium
- smallbadwolf
- · Replies 3 ·
Solving an Electrostatic Force Problem
- eok20
- · Replies 4 ·
Checking momentum and kinetic energy conservation in a collision lab
- F.B
- · Replies 6 ·
Can an object with constant angular velocity experience net torque?
- hshphyss
- · Replies 1 ·
How Is Electric Field Amplitude Related to Power in Electromagnetic Waves?
- Tcat
- · Replies 1 ·
How Long Does It Take a Rolling Sphere to Reach the Edge of a Rotating Platform?
- dilberg
- · Replies 11 ·
Determine the angle of incidence
- lw11011
- · Replies 2 ·
Calculating Stretching of a Wire: 2.5m Long
- naeblis
- · Replies 3 ·
Finding angular velocity from kinetic energy then angular momentum
- kingyof2thejring
- · Replies 5 ·
Does 6 kW Cooling Fan = 6 kW of Heat?
- TSN79
- · Replies 4 ·
Induced EMF ~ Faraday's Law/Lenz's Law
- Kali8972
- · Replies 4 ·
Finding initial velocity for slingshot egg launcher
- gogetagritz
- · Replies 3 ·
Calculating Total Force on a 1/2 Wavelength Section of a Wave-Rope System
- sari47
- · Replies 1 ·
Square coil torque balance in vertical magnetic field
- Pseudo Statistic
- · Replies 3 ·
Average induced emf in circular loops with changing magnetic field
- Kali8972
- · Replies 2 ·
Center of Rotation w/ 4 Objects: Finding Tension
- SS2006
- · Replies 5 ·
How Does the De Broglie Wavelength Relate to Scattering Angles?
- QueenFisher
- · Replies 3 ·
Golf ball hit at 20 degrees from 4m cliff lands in ocean after 5 seconds
- avb203796
- · Replies 5 ·
How Much Energy Is Needed to Convert Ice at -108°C to Water Vapor at 1108°C?
- zhen
- · Replies 4 ·