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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Free body diagram(its simple but i don't know why i can't understand it)
- 1/2"
- · Replies 2 ·
Conical pendulum circular motion question
- Shanyn
- · Replies 14 ·
Electric and magnetic energy densities of the earth
- sept26bc
- · Replies 1 ·
Unit vector in xy plane perpendicular to (3,5,1)?
- PhizKid
- · Replies 3 ·
What does the sign of electric potential between two charges represent?
- Jalo
- · Replies 1 ·
How Do You Calculate the Orbital Speed of Satellites?
- Northbysouth
- · Replies 3 ·
Relation of Magnetic and Electric Force of particles in vacuum
- sept26bc
- · Replies 10 ·
Gravitational Forces Examined: Is F=mg Always True?
- darkmatter820
- · Replies 1 ·
How to find magnetic flux density at center and ends of solenoid
- Trip1
- · Replies 3 ·
Virtual Image Location for Negative Lens System?
- mrlevis
- · Replies 6 ·
Mass sliding down a wedge on a frictionless table
- assaftolko
- · Replies 7 ·
Bernoulli/ Continuity Eq'n problem
- jamesbiomed
- · Replies 3 ·
Impulse Momentum Method for Rotational
- freshbox
- · Replies 6 ·
Finding mass of ions in magnetic field
- s-f
- · Replies 16 ·
Current-carrying Wire in a Circular Magnet
- LovePhys
- · Replies 3 ·
Deriving formula for z coordinate and mass value.
- bobh.stein
- · Replies 8 ·
Which of the following statements about Gauss's law are correct?
- Slugger17
- · Replies 5 ·
Resnick Halliday Krane Unit Vectors question
- Neek 007
- · Replies 6 ·
Solving Impulse: Why Only 1 Method Works for Determining Change in Velocity
- Nito
- · Replies 3 ·
Simple problem on Lenz's Law application using Right Hand Rule
- Dana327
- · Replies 6 ·
Finding currents in a circuit using Kirchhoff's laws
- Cetullah
- · Replies 4 ·
What is the efficiency of a Carnot engine and the effectiveness of a heat pump?
- sora1607
- · Replies 1 ·
Trajectories of objects thrown from a height
- ostrich
- · Replies 7 ·
Work done by 225 N force at 40° dragging 50 kg crate
- xuhhad
- · Replies 17 ·
Why momentum isn't conserved on the y-axis for mass rolling on semicircular body
- assaftolko
- · Replies 14 ·
Calculating Charge for Replacing a Power Supply in an Electric Field Experiment
- CaptCakey
- · Replies 1 ·
Find the point of destructive interference of two waves.
- member 422733
- · Replies 3 ·
Is water level the same after an anchor is thrown from a boat?
- jamesbiomed
- · Replies 7 ·
Fnet=P-Pc=24-117.6=-93.6NFind Force Needed to Move 4kg Box in 3s
- bearsa113609
- · Replies 2 ·
Acceleration of a Wheel Connected to Two Blocks with Ideal Wire
- Tiba
- · Replies 12 ·
Work done in bringing a charge from infinite.
- Dodgers31296
- · Replies 1 ·
2 masses collide, one has spring. -Collision, Momentum, Spring energy
- azurken
- · Replies 3 ·
Total internal refraction inside an optical fiber
- member 422733
- · Replies 2 ·
How Far Does the Spring Compress When Two Colliding Masses Come to a Stop?
- azurken
- · Replies 3 ·
Why Doesn’t Load Power Keep Increasing with Load Resistance?
- JJBladester
- · Replies 4 ·
From angular momentum hamiltonian to angles(coordinates)
- jannyhuggy
- · Replies 1 ·
Magnetic Forces Between Current Carrying Wires
- s-f
- · Replies 17 ·
Gamma radiation. Nuclear, electromagnetic or both?
- Gringo123
- · Replies 1 ·
How far does a platform recoil when someone throws a ball across it?
- Parzival
- · Replies 4 ·
RC Circuit ; why RC=(VT/2 delta V)
- tom25
- · Replies 1 ·
Distance Covered While Acc, and Dec
- granitkr
- · Replies 4 ·
Calculate the work needed to move a test charge from point B to D
- shashaeee
- · Replies 6 ·
Can someone see if this is the right way to do? First time taking physics
- sammy852
- · Replies 2 ·
Method of Pins- Trusses (conceptual)
- giacomh
- · Replies 2 ·
Calculating the Coefficient of Friction in a Sled-Pulling System at Equilibrium
- Jimbo57
- · Replies 6 ·
Finding Time for Spring to Reach Equilibrium Length
- member 422733
- · Replies 2 ·
Finding time taken from ticker tape intervals to calculate acceleration
- bumbletiger
- · Replies 2 ·
U-shaped iron core with I-shaped iron core vs without
- fojkehelky
- · Replies 3 ·
How high is the stone at its highest? Relationships are given
- Mushroom79
- · Replies 8 ·
Find the Current using Force/Length Between Two Wires
- sozo
- · Replies 1 ·
How Can You Design a Simple Scale Using Cable Tension and Displacement?
- Hashika
- · Replies 8 ·
How Does Fluid Pressure Influence Pump Placement in Wells?
- gokuls
- · Replies 1 ·
Newton's Second Law ODE Question
- MIBinRN
- · Replies 5 ·
Electric field strength between two points.
- Dodgers31296
- · Replies 6 ·
Separation between lowest energy states
- Flucky
- · Replies 5 ·
Finding final position with constant acceleration, given time and initial conditions
- sammy852
- · Replies 4 ·
How Do You Calculate the Swing Angle in a Conical Pendulum?
- ImStuck1
- · Replies 15 ·
What is the Kinematics Problem for a California Condor Carrying Carrion?
- yjstudent
- · Replies 6 ·
Determining direction of magnetic field
- s-f
- · Replies 6 ·
Finding position and Velocity of a dropped Sandbag from 40.0m above the ground
- Toranc3
- · Replies 4 ·
Why is normal force mg ± mg sin θ, not mg cos θ?
- bchung606
- · Replies 2 ·
How much energy is needed to place 4 positive charges
- shashaeee
- · Replies 3 ·
Electric potential for flat sheet
- WannabeNewton
- · Replies 10 ·
What is the sign and magnitude of the unknown charge
- shashaeee
- · Replies 7 ·
Where can a third charge +Q be placed so that it experiences a zero force?
- shashaeee
- · Replies 3 ·
Interference - Q done, is it right?
- Flucky
- · Replies 4 ·
Ranking impulse and momentum for three crates pushed for 3 seconds
- Justinmcg67
- · Replies 2 ·
Finding a constant of proportionality (Astro)
- lquinnl
- · Replies 19 ·
Projectile Motion problem (is my textbook wrong?)
- Element1674
- · Replies 7 ·
Torsional pendulum setup with masses at the ends
- yaluubill
- · Replies 2 ·
What are the three situations in which light does not travel in a straight line?
- lydiakim
- · Replies 1 ·
Particle moving in Simple Harmonic Motion
- smsport
- · Replies 6 ·
How to make a proof for complementary angles of elevation.
- Shanyn
- · Replies 14 ·
How Do Rotating Disks Measure Bullet Speed?
- Parzival
- · Replies 3 ·
Effective Current Impedance Calculation without Inductive Coupling
- radicaled
- · Replies 3 ·
How Do Cars A and B Interact on a Position-Time Graph?
- Toranc3
- · Replies 2 ·
Projectile angles and speed (x and Y) near impact
- coneheadceo
- · Replies 5 ·
Show, using directional arrows, which transition corresponds to
- IntegrateMe
- · Replies 11 ·
Quantum Mechanics (potential well)
- roam
- · Replies 8 ·
Finding bearing and position vectors of moving ships
- phospho
- · Replies 2 ·
Calculating Half-Life from Radioactive Decay
- sklotz
- · Replies 4 ·
How does ladder operation in an anharmonic oscillator lead to a value of 3?
- rubertoda
- · Replies 6 ·
Forces on a rectangle and semicircle in a magnetic field
- radicaled
- · Replies 7 ·
Free Fall and Vertical Velocity: Solving for Time at Same Level
- warchief
- · Replies 1 ·
Hip pad compression and acceleration during a fall
- Toranc3
- · Replies 7 ·
Magnitude of current passing through unit area in atmosphere(He2+ and O2-)
- dawn_pingpong
- · Replies 10 ·
What is the formula for the width of the potential box?
- dawn_pingpong
- · Replies 1 ·
Calculating the mass of the earth's atmosphere
- dawn_pingpong
- · Replies 2 ·
What is the maximum glide distance for an airplane with an engine failure?
- roam
- · Replies 16 ·
What fraction of the kinetic energy is converted to other forms in collision?
- dawn_pingpong
- · Replies 4 ·
Understanding Approximations in Angular Motion Equations
- Joshuarr
- · Replies 1 ·
Is the problem wrong (deals with resolving vectors into their components)?
- awesome_irl
- · Replies 4 ·
Finding jumping height on an unknown planet given Mass/Radius
- rkiecaboose
- · Replies 8 ·
The Right Hand Rule for Magnetic Fields
- s-f
- · Replies 3 ·
A uniform chain problem (Mechanics)
- assaftolko
- · Replies 7 ·
Ball projectile motion with 50m height and 200m range, motorcycle cliff jump
- bmguico
- · Replies 10 ·
What Is the Average Force Produced by One Gallon of Gasoline?
- teremala
- · Replies 2 ·
Finding gravitational potential energy height in rotational work-energy problem
- freshbox
- · Replies 29 ·
Calculating Standing Wave Diagrams and Wave Speeds for Closed Cylinders
- quaere verum
- · Replies 1 ·
Calculate capacitance of conductors
- s-f
- · Replies 3 ·