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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2000 kg boat, motor force of 6000 N, resistance 2000 N
- Nick63
- · Replies 8 ·
Doppler effect with moving source and observer
- windowofhope
- · Replies 8 ·
How to find initial velocity with height, distance and angle
- Jordann2222
- · Replies 1 ·
Method of Members: finding reaction forces on pin-connected frame
- dlacombe13
- · Replies 9 ·
What is the change in entropy ΔS of the gas?
- kolua
- · Replies 2 ·
How to Apply Snell's Law Without Knowing the Index of Refraction?
- Hello2016
- · Replies 4 ·
Calculating the tension in rope of accelerating object
- TiernanW
- · Replies 8 ·
Moment of Inertia of Half Ring (Half Circle)
- Arman777
- · Replies 2 ·
Finding time interval from isotope ratios without decay constants
- Lagraaaange
- · Replies 17 ·
Does Increasing Molecules in a Constant Temperature Container Affect Pressure?
- Wombat11
- · Replies 2 ·
A coil moves into a magnetic field
- Ferranti_C_VB
- · Replies 1 ·
Zero Induced EMF: Find Rate of B Change for Problem 9
- CD135
- · Replies 3 ·
Acceleration of Two Blocks Connected by a Pulley on a Frictionless Ramp
- I_Auditor
- · Replies 1 ·
Why Do We Use Ramp Length Instead of Height in Rolling Sphere Calculations?
- jcruise322
- · Replies 3 ·
What is the Zeroth Law of Thermodynamics and why is it causing confusion?
- Jansen
- · Replies 5 ·
What is the Coefficient of Friction for a Lab Using Spring Scales?
- timsmith98
- · Replies 2 ·
Speed of toy car at highest point after leaving curved track
- Michele Nunes
- · Replies 5 ·
Determine the resultant displacement
- Physics2015
- · Replies 2 ·
Value of friction with constant velocity
- jcruise322
- · Replies 3 ·
Finding velocities in super elastic collision
- jcruise322
- · Replies 3 ·
Heated air below mercury pushes it out of glass tube
- marcbodea
- · Replies 9 ·
Thermal Expansion linear vs area expansion
- Searay330
- · Replies 6 ·
Forces on inclined plane question
- Jake14
- · Replies 2 ·
Rotational Motion: Calculating Time to Reach 750 RPM
- hannah12345
- · Replies 3 ·
Angular acceleration in moment of inertia
- dumbdumNotSmart
- · Replies 3 ·
Final velocity of satellite that falls from orbit
- jcruise322
- · Replies 14 ·
Finding direction of angular momentum of system~
- jcruise322
- · Replies 1 ·
How to Calculate Average Velocity on a Circular Track?
- cvc121
- · Replies 4 ·
Why do atoms in a solid act like hard balls?
- TaraaaK
- · Replies 2 ·
How does the altitude of an airplane affect the velocity?
- distalphalanx
- · Replies 3 ·
Kinetic and potential energy (satellite low orbit)
- lucphysics
- · Replies 6 ·
Thermal Question -- Carnot Engine
- StrSpeed
- · Replies 3 ·
Find Centre of Mass of a Metal Sheet
- Elena14
- · Replies 21 ·
Banking angle formula for circular motion on a highway
- Mitchell Arnott
- · Replies 7 ·
You can use LaTeX to format your equations. It is supported on PF.
- Noam M
- · Replies 2 ·
"speed rate of change" vs. "velocity rate of change"
- cj
- · Replies 4 ·
How Does Friction Affect Cars on Circular Tracks Compared to Straight Roads?
- ajaysabarish
- · Replies 4 ·
Direction of friction when a body moves in a circular track?
- ajaysabarish
- · Replies 5 ·
Nyquist frequency and sampling frequency
- pinkcashmere
- · Replies 2 ·
Sphere rotating about tangent axle: linear speed at lowest point
- dobiegerl
- · Replies 9 ·
Classical Mechanics - Statics - Mass and overhang
- Lito
- · Replies 1 ·
Newton's laws multiple choice question
- mcdavid&goliath
- · Replies 12 ·
How Do Lorentz Transformations Affect Clock Readings in a Moving Rocket?
- Colin Martin
- · Replies 8 ·
How much gunpowder does a rocket need?
- 168918791999
- · Replies 69 ·
Estimate the mean number of decays
- aaaa202
- · Replies 2 ·
Height of Mercury in a pipe after removing it from a tub
- Balint
- · Replies 6 ·
How is the direction (vector?) of momentum stored physically
- Benwade
- · Replies 5 ·
Finding total moment of inertia from acceleration in rotating system lab
- NinjaChachi
- · Replies 3 ·
Rounding measurement values and errors to significant figures in Excel
- phy9
- · Replies 13 ·
Magnetic dipole moment of a solenoid with 1080 turns
- lloyd21
- · Replies 43 ·
Speed of a Wave vs. Density of a Medium
- jumbogala
- · Replies 2 ·
Speed of a solid cylinder after unwinding
- BMZ
- · Replies 6 ·
How to find the specific heat capacity of a mixture?
- timsmith98
- · Replies 10 ·
Gauss' law for concentric circles
- gracy
- · Replies 141 ·
How Is Capacitance Calculated for Different Capacitor Areas?
- gracy
- · Replies 19 ·
Double slit experiment with a slit covered.
- Clara Chung
- · Replies 3 ·
Satellite orbital speed increase despite decreasing mechanical energy
- lucphysics
- · Replies 7 ·
Calculate velocity of block down a ramp using energy conserv
- Scatteredheroes
- · Replies 3 ·
Calculating Forces in a Concrete Slab Supported by a Chain
- OmniNewton
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Nodal analysis with dependent voltage source
- TheCanadian
- · Replies 4 ·
What is the equivalent resistance from A to B?
- faradayscat
- · Replies 1 ·
Velocity and Acceleration of a particle around a circle
- droidofthevoid
- · Replies 7 ·
Torque on rear wheel gears in an 18-speed bicycle
- Arman777
- · Replies 3 ·
Total acceleration from angular acceleration
- droidofthevoid
- · Replies 7 ·
Finding Work done without mass and friction force
- Ummuali
- · Replies 4 ·
How Does Friction Affect Work and Energy on an Inclined Plane?
- nikhi
- · Replies 3 ·
Calculating Magnetic Flux Needed for Ion Control
- tankarish
- · Replies 1 ·
Calculating Energy Transfer in a Radio with Current and Voltage
- Sace Ver
- · Replies 6 ·
Frog jumping to 1m height: finding initial velocity
- brendonsushi
- · Replies 1 ·
What happens to entropy when doubling the volume?
- fuselage
- · Replies 10 ·
Why is my momentum ratio calculation wrong?
- David112234
- · Replies 8 ·
Amplitude vs Location when KE=PE?
- bob tran
- · Replies 22 ·
Calculating Archerfish's Line of Sight Angle in Relation to Squirt Angle
- RaeZ
- · Replies 5 ·
Ball bouncing off wall at angle momentum problem
- David112234
- · Replies 4 ·
Electric field due to a Solid Non-Conducting Sphere
- Siddharth Barua
- · Replies 14 ·
Gravitational force on particle from three spheres
- struggles
- · Replies 15 ·
Why Does a Boat with a Fan and Sail Not Move According to Newton's Laws?
- Vibhor
- · Replies 16 ·
Amplitude and Period of Oscillation from Collision
- bob tran
- · Replies 2 ·
Various Physics Practice Problems for Exam
- Charles Lee
- · Replies 1 ·
Right Hand Rule for Magnetic Forces.
- Alameen Damer
- · Replies 1 ·
Restoring force and frequency for mass between two springs
- ztalira
- · Replies 1 ·
Period of Vibration of Torsion Pendulum
- Felicity Wang
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Determining the Spring Constant for a Pendulum with a Spring-Loaded Launcher
- arche1
- · Replies 3 ·
Finding a current in a circuit with a dependent source
- TheCanadian
- · Replies 7 ·
What is the Vertical Velocity of a Falling Rope Sliding Over a Peg?
- Matt951
- · Replies 13 ·
Gauss' Law for a Nonuniform Field
- Redfire66
- · Replies 1 ·
Average velocity? Average speed?
- CMATT
- · Replies 9 ·
Velocity for t->infinity with given equation of motion
- spacetimedude
- · Replies 2 ·
Elastic collision between alpha particle and gold Nuclei
- xoxomae
- · Replies 2 ·
Distance traveled with time-dependent force F(t)=f₀+αt+βt²
- ztalira
- · Replies 5 ·
How to visualize and understand position vectors
- Erkan Tur
- · Replies 4 ·
Why does an object move faster translational vs. rotational
- PhysicsInNJ
- · Replies 8 ·
Why Velocity is different in different equations?
- Gjmdp
- · Replies 6 ·
Least time for boat to cross (theory)
- a lone fishy
- · Replies 6 ·
Impedances of R, L, C, RL, RC, LC and RLC circuits
- Bruno Tolentino
- · Replies 1 ·
Length Contraction of Bridge rotated 30 degrees
- marimuda
- · Replies 31 ·
Time Constant ≠ Time constant from experiment
- Vaclav
- · Replies 9 ·
Calculating Uncertainty in Scientific Measurements
- qorizon
- · Replies 2 ·
Find speeds after 2D elastic collision between rubber pucks
- Valenti
- · Replies 4 ·
What is the Velocity of a Billiard Ball after a Horizontal Impulse of 2 N*s?
- Raios168
- · Replies 11 ·