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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Constraint and forces in two-pulley two-mass system
- revolve
- · Replies 8 ·
Radius of a circle with a magnetic field and electron velocity
- skibum143
- · Replies 3 ·
What is the Efficiency of a Carnot Engine?
- CINA
- · Replies 4 ·
Friction force on a 10-kg crate pulled with 40 N
- kenjiro310
- · Replies 2 ·
Electric potential, hard problem
- fluidistic
- · Replies 5 ·
Mechanics - find the coefficient of friction
- mohdakram
- · Replies 2 ·
What is the tension between two connected train cars in a toy locomotive system?
- sheepcountme
- · Replies 12 ·
Law of Conservation of Energy Question
- kylepetten
- · Replies 7 ·
Is the Calculated Speed and Wavelength of a Sound Wave Accurate?
- Brittykitty
- · Replies 2 ·
Mass vs. Average Period Squared
- noname1
- · Replies 19 ·
Calculating Average Induced EMF of 100-Turn Coil in 0.36s
- matt72lsu
- · Replies 6 ·
How many stars in our galaxy if they had the mass of our Sun.
- balletgirl
- · Replies 4 ·
Derivation of mechanism of charging capacitor
- thereddevils
- · Replies 2 ·
Maximum speed Tarzan can tolerate
- balletgirl
- · Replies 1 ·
What is the period of revolution for an artificial planet
- balletgirl
- · Replies 2 ·
Electric Field vs. Electric Potential
- JJBladester
- · Replies 3 ·
Projectile range with launch height above target
- rajesh.msen
- · Replies 2 ·
How is the formula for period of oscillation derived?
- TyErd
- · Replies 2 ·
Finding the time in a tension problem
- foozeball2468
- · Replies 17 ·
Question envolves the centre-of-mass and momentum.
- Philippe007
- · Replies 16 ·
What is the relationship between Young's modulus and bulk modulus in tin?
- tanzerino
- · Replies 5 ·
Evaluate the magnitude of the gravitational field at the surface of the planet
- huybinhs
- · Replies 32 ·
How much will it weigh at the equator?
- huybinhs
- · Replies 19 ·
Finding range for a projectile launched at 45 degrees
- Awsom Guy
- · Replies 20 ·
What are the units for Molar Mass in Chemistry and Physics?
- SAT2400
- · Replies 4 ·
What are the implications of a frictionless wedge with accelerating mass?
- sheepcountme
- · Replies 5 ·
EC and DC circuits, using matrices
- congo
- · Replies 5 ·
Cannon & Cliff: Minimum Muzzle Velocity & Horizontal Flight
- steph2010
- · Replies 15 ·
Work Problem: Calculate Force, Work & Friction
- lockedup
- · Replies 4 ·
Optics - Images with two convave mirrors
- kihr
- · Replies 4 ·
Why Does Calculating the Speed of a Runaway Cable Car Involve Both Masses?
- mullets1200
- · Replies 1 ·
Calculating Inductance in an RL Circuit
- n.hirsch1
- · Replies 3 ·
Force pulling on rope with mass in ice block problem
- mullets1200
- · Replies 3 ·
Finding equivalent capacitance and voltage in a mixed series-parallel network
- SuperCass
- · Replies 2 ·
What Is the Minimum Coefficient of Friction Required to Navigate a Curve Safely?
- reticpythons
- · Replies 3 ·
How Long Does It Take to Orbit the Moon at an Altitude of 100km?
- balletgirl
- · Replies 4 ·
Voltage in a Circuit: Calculate with Current Divider
- -EquinoX-
- · Replies 3 ·
Finding tension in a rope problem
- mullets1200
- · Replies 4 ·
Finding the Angle of Velocity After a Collision at an Angle
- gods_laughing
- · Replies 3 ·
Where will the image of the candle be formed?
- kihr
- · Replies 5 ·
Electric Potential in a triangle
- Zywo
- · Replies 1 ·
Finding how weight placed on a ruler affects its oscillation.
- 1NS4N3 4ZN
- · Replies 1 ·
Power Calculation for 1100 kg Object at 5 m/s
- bandgeek27
- · Replies 3 ·
What is the spring constant of the spring
- noname1
- · Replies 3 ·
Time it takes for a satellite to orbit the Earth
- balletgirl
- · Replies 5 ·
What is the scalar product V_1(DOT)V_2 ?
- Rellsun
- · Replies 4 ·
Thin film intereference basic question
- perilawaits
- · Replies 1 ·
How Long to Reach the Top Walking on a Moving Escalator?
- optoracko
- · Replies 4 ·
What Is the Final Speed After Two Hockey Players Collide?
- Precursor
- · Replies 4 ·
What is the velocity of the object after it has been displaced by the spring?
- GreenPrint
- · Replies 6 ·
Total charge lifted by the charge escalator
- ozma
- · Replies 6 ·
Thermal vs drift velocity, water molecule forces, and composite resistivity
- iymat
- · Replies 3 ·
Why is my Atwood's Machine homework solution incorrect?
- GreenPrint
- · Replies 1 ·
Intervals of increase and the intervals of decrease?
- BuffaloSoulja
- · Replies 3 ·
Acceleration Vectors: Calculating Average Acceleration in a Direction Change
- GodOfYou
- · Replies 3 ·
At what distance from a carbon nucleus is the electric potential 2.1 V?
- 05holtel
- · Replies 1 ·
Finding speed of an object when it hits the ground, after free fall.
- austin944
- · Replies 4 ·
How Much Does Cooling Cost on a Hot Day with a 5-Ton AC?
- xmonsterx
- · Replies 7 ·
Greater influence on movement: Mass OR Gradient?
- 01010011
- · Replies 3 ·
How Do You Calculate Tension in a Cable Connected to Springs?
- aftershock
- · Replies 4 ·
What is the force between two magnets with different magnetic field strengths?
- dymand68
- · Replies 1 ·
Drawing a FBD for a Cup Spinning on a Lazy Susan
- crybllrd
- · Replies 1 ·
What happens when rotating a microwave receiver by 90°, 180°, 270°, and 360°?
- Jason17
- · Replies 1 ·
Does Wavelength Times Frequency Determine Speed of Light?
- bonjour
- · Replies 7 ·
Relationship between Newton's 2nd and Momentum?
- Glorzifen
- · Replies 9 ·
Particle in magnetic field, determining speed
- Tekee
- · Replies 4 ·
Power reduced by half every 2 km; speed of light in optic fibre
- reallydumb
- · Replies 1 ·
Finding specific enthalpy of saturated steam at 4.8 MPa and 40°C
- bp123
- · Replies 5 ·
Calculate curl of rotating bucket of water
- joe:)
- · Replies 3 ·
Calculating Frequency in SHM with Amplitude, Velocity, and Mass
- izzyfish
- · Replies 1 ·
Transformer problem (falling off of one, that is)
- statue
- · Replies 1 ·
Solution to Thermo Ice Melting Problem
- mysticjbyrd
- · Replies 2 ·
Expansion of an Ideal gas(molecular thermodyanmics)
- casiobeats
- · Replies 3 ·
Doubling Resistance of 1 Mile Copper Wire - 68 ohms
- dymand68
- · Replies 5 ·
How Do You Calculate Hydrostatic Pressure and Force in an Aquarium?
- 3.141592654
- · Replies 1 ·
What is the magnitude of each charge?
- dymand68
- · Replies 1 ·
Nails going down the side of the roof
- charan1
- · Replies 4 ·
Solving for Pressure in Four Cylinder Thermodynamic Problem
- alex1261
- · Replies 7 ·
Inertia and Kinetic energy of the sun
- Torrenza
- · Replies 3 ·
Coloumb's Law Three Charges in a Line (units question)
- thermocleanse
- · Replies 2 ·
Conceptual - Dot Product and Work
- mybrohshi5
- · Replies 6 ·
Calculating Average Velocity for a Remote Controlled Vehicle in 4.0 Seconds
- adhoward24
- · Replies 1 ·
Calculating Power Loss in Transmission Line with Transformers
- aizen92
- · Replies 2 ·
Car energy use with constant velocity and regular stops
- much12
- · Replies 2 ·
How much force is required to start a block moving on level ground?
- grrer
- · Replies 11 ·
Minimum time for boat to cross river with current
- ƒ(x)
- · Replies 6 ·
Does the water level rise when a boat sinks?
- glass.shards
- · Replies 9 ·
How fast will the pebble be travelling with respect to the center of the wheel
- huybinhs
- · Replies 2 ·
Interesting Physics research topics
- Eutrophicati
- · Replies 2 ·
Calculating resultant forces given FBD
- cdn88
- · Replies 4 ·
Headlight power consumption and gasoline efficiency calculation
- lha08
- · Replies 1 ·
How is work calculated on an inclined plane for a block of ice?
- gracedescent
- · Replies 1 ·
Free body diagram with circular motion
- crybllrd
- · Replies 5 ·
Three step gas cycle with heating, expansion and cooling
- xmonsterx
- · Replies 2 ·
Calculating the Z Component of a Force: Solving for the Unknown Vector Component
- Brophi
- · Replies 4 ·
Relative Acceleration of a Bolt on a Train
- optoracko
- · Replies 12 ·
Helium balloon centrifugal force
- gracedescent
- · Replies 4 ·
What is the Temperature of the Oven?
- lha08
- · Replies 1 ·
Finding conductance from current and voltage
- lha08
- · Replies 4 ·
Electric Field in and outside a cylinder
- reising1
- · Replies 4 ·