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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Is the ball motion in Gravity Master realistic compared to real physics?
- motleycat
- · Replies 1 ·
How thick must glass be to absorb 90%, 99%, and 99.9% of light?
- Astro Student
- · Replies 14 ·
How Do You Calculate Support Reactions in Beam Structures?
- amraneze
- · Replies 9 ·
Height of Pendulum Homework: A&B Answered, C&D Yet to Solve
- Taylor22
- · Replies 1 ·
Ice in water question - what is final temperature?
- Tyler H
- · Replies 11 ·
Finding Tension in a Ring on a Smooth Hoop
- omegasquared
- · Replies 10 ·
Angular radius of a star from effective temperature and flux
- FaraDazed
- · Replies 1 ·
Find the speed of a Block going up an incline
- Lucy90
- · Replies 1 ·
Draw vectors for a car being dragged along a ramp
- RUphysics3
- · Replies 6 ·
Why does shorting lamp A damage the lamps or supply?
- Janiceleong26
- · Replies 4 ·
Why Use e.m.f. Instead of Terminal Voltage for Power Calculation?
- Janiceleong26
- · Replies 2 ·
Positive and negative signs on Work
- bigsmile
- · Replies 1 ·
Pendulum - Maximum Angle in 2nd half of swing
- bigsmile
- · Replies 3 ·
Why does s = vt - 0.5at² give two positive times for a ball dropped from a tower?
- mcairtime
- · Replies 6 ·
How Can I Determine ε and σ for Lennard Jones Potential in an FCC Structure?
- Helpless guy
- · Replies 3 ·
What is the dating ratio of a rock sample that contains 87Rb and 86Sr?
- Granger
- · Replies 1 ·
Uncertainty in Radioactive Decay Dating Calculation
- Granger
- · Replies 1 ·
What is the half-life of proton decay in order to detect 3 decays in one year?
- Granger
- · Replies 2 ·
Egg Drop Project and Kinetic Energy
- jackrc11
- · Replies 1 ·
Potential difference of each resistor
- GBC
- · Replies 1 ·
Find maximum thrust of a rocket blasting off
- RUphysics3
- · Replies 7 ·
Magnitude and direction of acceleration
- AshleyAg
- · Replies 2 ·
Centripetal Forces and the Bucket in a Circle
- AAAA
- · Replies 5 ·
What Factors Cause a Car to Skid on a Circular Track with Kinetic Friction?
- Nishikino Maki
- · Replies 3 ·
Ion Flow Through a Channel: Current and Charge
- GBC
- · Replies 2 ·
B-particles inappropriate for scattering experiment
- Janiceleong26
- · Replies 2 ·
Determining the mass of a free to move piston
- 1729
- · Replies 11 ·
Finding Tension in a Massless String on an Inclined Plane
- toboldlygo
- · Replies 3 ·
Finding currents through resistors with Kirchhoff's law
- Toon
- · Replies 1 ·
Finding the height of a fall given force on impact
- astrocytosis
- · Replies 15 ·
Does convergence of field lines mean zero enclosed charge?
- Vibhor
- · Replies 4 ·
Average force exerted on a baseball
- vaibzzz123
- · Replies 3 ·
Question concerning Doppler effect
- diredragon
- · Replies 17 ·
Diffraction grating, distances between maxima
- TheKShaugh
- · Replies 3 ·
Understanding Electromagnetic Induction: Flux and Induced e.m.f.
- accountdracula
- · Replies 1 ·
Understanding Projectile Motion: Definitions and Concepts
- RohanTalkad
- · Replies 2 ·
Final speeds of two boxes pushed with different forces
- hairetikos
- · Replies 5 ·
How do I find theta for calculating torque in a given situation?
- Fischercr
- · Replies 3 ·
Complete set of compatible observables for given matrices
- Frank Einstein
- · Replies 4 ·
Coulomb's Law: Calculating the Force between Two Charged Balls
- Drizzy
- · Replies 4 ·
Magnetic Field [Perpendicular wires]
- Antonius
- · Replies 3 ·
Does a purely rotating body have zero linear momentum?
- erisedk
- · Replies 1 ·
Block and spring on ramp; find compression
- physics8763
- · Replies 18 ·
Girl on Slide: Solving for Normal Force, Energy Transfer, and Final Speed
- King_Silver
- · Replies 4 ·
Width of principle maxima in n slit diffraction
- Sharlom
- · Replies 2 ·
Conservation of energy, bungee jumping
- asdfg
- · Replies 5 ·
What is the Correct Magnitude of P in a System of Forces?
- werson tan
- · Replies 32 ·
Man walking on boat with no friction
- Lydia5
- · Replies 7 ·
Magnetism Wire Loop: Solve Problem in 1.5 Hours
- ellatha
- · Replies 2 ·
Conducting plate inserted between capacitor plates
- Abdul.119
- · Replies 1 ·
Time-Averaging the Potential Energy
- Calpalned
- · Replies 18 ·
How does rotational motion influence static friction?
- snacksforsale
- · Replies 7 ·
A rolling ball accelerating down an incline
- Mr Sun
- · Replies 4 ·
Mass of escaped air from a cylinder
- moenste
- · Replies 2 ·
Conservation of momentum or kinetic energy?
- udtsith
- · Replies 5 ·
A rifle barrel question related with Kinetic Energy Theorem
- youngC0610
- · Replies 2 ·
Trajectory - different start and end height, limited knowns
- jambraun
- · Replies 27 ·
Why does tension act downward in this problem?
- werson tan
- · Replies 8 ·
Calculating work done on parcel given a specific process?
- Foxhound013
- · Replies 5 ·
Conceptual Question on Projectile Motion
- Raios168
- · Replies 2 ·
Algebra in potential barrier problem
- Summer95
- · Replies 3 ·
Newton's third law a book and table
- mugen715
- · Replies 2 ·
Calculate N Slit Diffraction: Grating Width 5cm, Slit 0.0001cm, λ 5.5 x 10-5cm
- Sharlom
- · Replies 5 ·
Modeling a Black Box Circuit for Maximum Power Transfer
- haha1234
- · Replies 1 ·
Calculating Energy Components in a Pogo Stick Jump
- Haveagoodday
- · Replies 8 ·
Why moment at point C differs from book's answer at point D
- werson tan
- · Replies 6 ·
Calculating Angular Acceleration and Torque in a Rotating Motor System
- helpme101
- · Replies 5 ·
A problem on two dimensional kinematics
- Winsy
- · Replies 5 ·
Maximum acceleration of 1500 kg car on concrete surface?
- senpim
- · Replies 1 ·
What Angle Below the Horizontal Does a Hockey Puck Hit the Ground?
- Im_eNVy
- · Replies 11 ·
Two Midterm Questions: Velocity of Falling Ball and Acceleration of Braking Car
- Whatup202
- · Replies 5 ·
Calculating Energy from Mass Using E=mc²
- ElegantSir
- · Replies 7 ·
A rock with a weight of 10 N is resting on a table.
- Dillion
- · Replies 6 ·
Finding Velocity from only distance
- Jonathan.rls
- · Replies 3 ·
Solving a Series Circuit with Unequal Resistor Powers
- crom1
- · Replies 12 ·
Block projected up 30° slope with kinetic and static friction
- raindrop264
- · Replies 7 ·
Car accelerated by repulsion of two point charges
- wackyvorlon
- · Replies 3 ·
How to sketch a "2nd grade s-t" from a "linear v-t"
- Optikspik
- · Replies 2 ·
Driving force over time to produce acceleration (graph)
- moenste
- · Replies 6 ·
Finding the unit vector and calculating Fba magnitude
- werson tan
- · Replies 4 ·
Velocity, acceleration, collision
- PhysicsBoyMan
- · Replies 20 ·
How can I prove that T1 equals T2 in this system?
- Optikspik
- · Replies 8 ·
How to draw a coordinate system
- Optikspik
- · Replies 2 ·
Synchronized clocks in a moving frame
- davon806
- · Replies 6 ·
Multiple choice buoyancy problem
- 1729
- · Replies 6 ·
How much work, speed and distance
- Haveagoodday
- · Replies 15 ·
Direction of Tension: FBD Down vs Up
- werson tan
- · Replies 3 ·
Deriving Angular Momentum in a Particle Inside a Cone Problem
- Tanya Sharma
- · Replies 47 ·
Minimum distance to avoid collision using relative motion
- cr7einstein
- · Replies 2 ·
Linear kinematics problem with limited variables.
- Btipold
- · Replies 3 ·
What is the Terminal Velocity of a Skydiver with Given Parameters?
- newbe318
- · Replies 3 ·
Finding friction coefficient, car unbanked curve.
- blee2x2
- · Replies 3 ·
Finding the point where the line of action intersect with r
- werson tan
- · Replies 3 ·
Finding resultant force from three components
- werson tan
- · Replies 1 ·
Deriving t = 2(vi)/g*sin(theta) for projectile motion
- Paradise Jack
- · Replies 10 ·
Child jumping off rotating merry-go-round: energy vs momentum
- Prannoy Mehta
- · Replies 16 ·
Finding the coefficient of Kinetic force with an angle
- KellyTarzuoty
- · Replies 4 ·
How to find the final velocity o
- Jessica Lewis
- · Replies 2 ·
Find the acceleration of the wedge (see picture)
- Nathanael
- · Replies 10 ·
Velocity with negative acceleration
- PhysicsBoyMan
- · Replies 3 ·