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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Deriving the time equation from kinematics variables
- physiker99
- · Replies 1 ·
Doppler Effect with heart motion
- rpcarroll
- · Replies 1 ·
How much water boils when 7.67 kg of molten lead is poured into water?
- al86
- · Replies 1 ·
Can a particle follow a curved path without a force?
- ritwik06
- · Replies 2 ·
From Hot to Cool: A Change in Entropy
- kristibella
- · Replies 2 ·
Maximum upward force on 22kg box on 45° ramp at rest
- lanvin
- · Replies 5 ·
How Does the Moon Influence Earth's Tides?
- Farcry25
- · Replies 1 ·
Huge problem on hydraulic lifts
- mrjoe2
- · Replies 5 ·
Finding the Minimum Distance for Static Equilibrium with a Hanging Weight
- unreal89
- · Replies 8 ·
Time hollow cylinder spends on ramp
- cashmoney805
- · Replies 4 ·
How Fast Does the Rim of a Rotating Disk Move?
- 05holtel
- · Replies 1 ·
Expansion of Solids due to increases in Temperature
- jnbfive
- · Replies 2 ·
Finding force of friction on mass
- dannyboy8920
- · Replies 3 ·
Solving A Dog's Stream Crossing Challenge
- Throwback24
- · Replies 5 ·
Pressure on a wall due to n N2 molecules (close to ans)
- spaghed87
- · Replies 5 ·
Calculating Tension in a Rope Supporting a Mass
- 05holtel
- · Replies 1 ·
Acceleration of a mass connected to 2 different disks
- cashmoney805
- · Replies 3 ·
Difference in pressure question
- grog
- · Replies 4 ·
Final speed of 0.1 solar mass object falling into the Sun
- Ayame17
- · Replies 6 ·
Calculating Mars' Orbital Period in Earth Years
- Inertialforce
- · Replies 5 ·
Elasticity / Diving Board problem
- joshncsu
- · Replies 5 ·
Newton's Third Law: True or False?
- UNknown 2010
- · Replies 5 ·
Calculating the Mass Flow Rate for Point C
- jimbo71
- · Replies 5 ·
Calculating Power Needed for Roller Coaster
- Photographer
- · Replies 1 ·
How mass change if 30M above earth surface?
- xlzhsteven
- · Replies 5 ·
Moment of inertia of three blocks on a rod
- cantgetno
- · Replies 5 ·
How Do You Calculate the Moment of Inertia for a Compound Disk?
- cantgetno
- · Replies 5 ·
Rotational Kinetic Energy of an airplane propeller
- cantgetno
- · Replies 4 ·
Some small questions grouped together
- ritwik06
- · Replies 1 ·
Find Relative Velocity: Acceleration on Inclined Plane
- ritwik06
- · Replies 1 ·
Force at the end of a pivoted object
- saltine
- · Replies 3 ·
Apparent depth involving benzene on water
- rno88
- · Replies 5 ·
Satellite X and Y Orbital Period - Answer B: 1.4x10^6s
- Inertialforce
- · Replies 2 ·
Calculating Electromagnetic Energy from Satellite Dish
- ilovephysics2
- · Replies 1 ·
Tension in sagging clothesline and car braking distance
- cillaxe
- · Replies 1 ·
How do I calculate the uncertainity when converting minutes to hours?
- cbrowne
- · Replies 5 ·
Finding tension in cords with no numerical values given
- Jim4592
- · Replies 8 ·
How Does the Work-Energy Theorem Apply to Calculating Force on a Sled?
- Jim4592
- · Replies 3 ·
How to Calculate Coefficient of Kinetic Friction for Slowing Box?
- Jim4592
- · Replies 5 ·
Calculating Power of a Light Bulb
- Jim4592
- · Replies 2 ·
Law of universal gravitation on three objects
- xvortx
- · Replies 1 ·
Finding car mass from kinetic energy
- drumjunkie
- · Replies 2 ·
Calculating Force of Asteroid Slowing Down
- ChairmanMao
- · Replies 7 ·
Projectile problem w/ unkown velocity/time
- bmyer
- · Replies 2 ·
Projectile Motion with Given Angle and Velocity
- roboman32
- · Replies 2 ·
Force and work required to lift a 5kg sack at constant speed
- Jim4592
- · Replies 2 ·
Solving Claire's Physics Problem: Minimum Angle to Outrun an Arrow
- gemini2904
- · Replies 3 ·
Physics Question Regarding Impluse, Momentum, and Velocity.
- Jim4592
- · Replies 4 ·
What is the Linear Speed of a Child on a Rotating Merry-Go-Round?
- kaylanp01
- · Replies 17 ·
Minimum angle to outrun an arrow fired at 20 m/s
- gemini2904
- · Replies 10 ·
Is a particle with y-position -t² free along the y-direction?
- catstevens
- · Replies 3 ·
Work Energy Theorem of a fired arrow
- Notyou
- · Replies 3 ·
Acceleration of a falling tower
- TimH
- · Replies 2 ·
Constant Acceleration of a motorist
- devyn
- · Replies 1 ·
Moments-calculate centre of mass
- tweety1234
- · Replies 12 ·
What is the wavelength of light in water when it enters a swimming pool?
- Soojin
- · Replies 3 ·
What is the Power Output of the Sun's Electromagnetic Waves?
- vrobins1
- · Replies 5 ·
Rotating cone filled with water
- largich
- · Replies 2 ·
Center of mass of a car from wheel scale readings
- kaylanp01
- · Replies 6 ·
How Much Does a Brass Wire Stretch Under a 5 kN Load?
- Soojin
- · Replies 1 ·
What is the Surface Current and Magnetic Field for a Rotating Charged Disc?
- lovinuz
- · Replies 1 ·
Uncertainty propagation for combined length and kinetic energy
- cbrowne
- · Replies 1 ·
Deriving Rotational Energy Equation for Rigid Bodies
- Crosshash
- · Replies 2 ·
Give the error formula for y=x5
- cbrowne
- · Replies 4 ·
Banking angle for 200m curve at 70 km/h and three force problems
- vballkatie22
- · Replies 3 ·
Determining types of interference
- jaejoon89
- · Replies 1 ·
Easy operations but somehow I'm wrong
- fallen186
- · Replies 1 ·
What Is the Density of a Sphere Submerged in Water?
- 05holtel
- · Replies 1 ·
Conduction heat transfer mechanisms
- Jennifer001
- · Replies 1 ·
Finding volume and density from weight in air and alcohol
- 05holtel
- · Replies 3 ·
What is the pressure at the bottom of the water layer?
- 05holtel
- · Replies 1 ·
Why Does Deep Water Reduce Foot Pain from Rocks?
- jimbo71
- · Replies 6 ·
Furnace Device: Answers & Solutions
- jimbo71
- · Replies 3 ·
Latent heat of fusion/latent heat of vaporization
- jimbo71
- · Replies 2 ·
Elastic Collision of Two Boxes: Kinetic Energy Transfer
- teckid1991
- · Replies 3 ·
How Does the Otto Cycle Affect Internal Energy Change?
- doggieslover
- · Replies 7 ·
Cylinders (or pulley) cord-motion
- fluidistic
- · Replies 15 ·
Kinetic Energy of gas Molecules
- Dulcis21
- · Replies 4 ·
A point on the rim of a 0.30-m-radius rotating
- debo
- · Replies 3 ·
How Is the Two-Slit Interference Pattern Formed and Analyzed?
- nokia8650
- · Replies 1 ·
How Far Can Professor Fich Move Before Exceeding the Rope's Tension Limit?
- bluejay1
- · Replies 1 ·
Solving Schrödinger Equation: A, V(x), and a Hint
- Messy
- · Replies 1 ·
Why does charging time scale linearly with RC if the voltage curve is exponential?
- jaejoon89
- · Replies 2 ·
What is the escape velocity for an object
- Inertialforce
- · Replies 1 ·
How Does Hitting a Cue Ball Above the Equator Affect Its Motion?
- bluejay1
- · Replies 1 ·
Gravitational force multiple choice question
- Inertialforce
- · Replies 4 ·
What is the Maximum Kinetic Energy of an Object Constrained by a Cord?
- hansel13
- · Replies 5 ·
Rotational Motion: Supernova to Pulsar Transformation
- myoplex11
- · Replies 1 ·
Elevator and unknown passenger mass
- retracell
- · Replies 6 ·
General Rule for Spring Compression?
- FrenchAtticus
- · Replies 5 ·
Velocity of a cork from a toy gun
- hansel13
- · Replies 6 ·
Center of Mass of a System Problem
- catstevens
- · Replies 1 ·
Thermodyanmics, thermal properties of matter
- Jennifer001
- · Replies 4 ·
How can I expand the time delay of neutrinos as a Taylor series?
- Epif
- · Replies 1 ·
How Is Ice Formed When Aluminum Cools Water?
- jason.maran
- · Replies 5 ·
Calculating Coefficient of Friction and Kinetic Energy in Bullet-Block Collision
- marialo
- · Replies 12 ·
Balls exerting gravitational force on eachother
- Axl Rose
- · Replies 1 ·
What is the Kinetic and Internal Energy of a Car-Truck Collision?
- gmagnus
- · Replies 1 ·
Can an exercise bike be used to generate heat for a room?
- Unassuming
- · Replies 7 ·
Why does angular momentum stay constant as plane moves past farmer?
- FisherDude
- · Replies 3 ·