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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How Do Wave Velocities and Frequencies Change in a Compound Wire System?
- gboff21
- · Replies 8 ·
Damped oscillator consecutive amplitude ratio
- Uniquebum
- · Replies 2 ·
Two connected springs and potential energy as a function of x and y
- Diff.Ed
- · Replies 1 ·
Calculating Time and Angle of Impact in Free Fall Physics Problem
- laladude
- · Replies 2 ·
Inclined plane with spring underneath.
- dttah
- · Replies 7 ·
Is the Current Zero When a Capacitor is Fully Charged?
- charlies1902
- · Replies 4 ·
What is the effect of a negative charge on the right hand rule?
- grscott_2000
- · Replies 5 ·
Force between 2 parallel plates
- khfrekek1992
- · Replies 5 ·
I insert in my calculator cos 50x60 = 42.42
- luigihs
- · Replies 6 ·
Calculating Heat Loss through 1m Glass Pane - 15oC Difference
- luigihs
- · Replies 2 ·
Flux at Earth's surface and Poynting vector
- Silversonic
- · Replies 2 ·
Rappelling climber: why use cos(10°) for rope tension torque
- PirateFan308
- · Replies 1 ·
How Long Does It Take a Train to Reach Twice Its Threshold Speed?
- bernvall
- · Replies 3 ·
What is Electrical energy measured in?
- Rychelle
- · Replies 1 ·
Maximum height using Newton's second law
- Trobocop
- · Replies 5 ·
A 5cm long, 30g lead bullet strikes a wall at 27°C and melts on the wa
- Physics8o8
- · Replies 1 ·
Carbon dating age of a 5g charcoal sample from an ancient fire pit
- Jon1527
- · Replies 9 ·
A 50cm wavelength EM wave in air has 50mW/m^2 of energy.
- Physics8o8
- · Replies 1 ·
Finding the initial velocity using quadratic
- Rammer24
- · Replies 1 ·
A 2cm diameter cylindrical solenoid of 10 loops and 20cm long
- Physics8o8
- · Replies 2 ·
Particle Energy on a Smooth Sphere: Finding the Point of Departure
- bernvall
- · Replies 2 ·
Deriving the Energy-Momentum Formula
- Rulesby
- · Replies 1 ·
Question in thermodynamics-melting of ice.
- hale2bopp
- · Replies 2 ·
Induced EMF in Non-Uniform Magnetic Field
- arl146
- · Replies 33 ·
Using hookes law to find impulse
- captainhooke1
- · Replies 2 ·
Hollow shere energy and velocity
- tebes
- · Replies 1 ·
Moment of Inertia of a Small Sphere Revolving on a String
- cc2hende
- · Replies 1 ·
Why do the boy and his image have the same speed in a plane mirror?
- Faris1985
- · Replies 2 ·
Work with drag problem. Blimp being pulled downward.
- gabbiegirl
- · Replies 1 ·
Understanding Acceleration and Motion with a Constant Acceleration Formula
- demv18
- · Replies 1 ·
What Happens to Gas Temperature in an Isothermal Expansion?
- maurice2705
- · Replies 4 ·
Spring motion/Friction/Freefall problem
- jjd101
- · Replies 4 ·
Doppler shift of an approaching source with interference problem
- Solidearth
- · Replies 3 ·
What is the Angular Speed of a Freely Rotating Cylinder?
- tebes
- · Replies 6 ·
Two cylinders rolling without slipping
- smallflight
- · Replies 12 ·
Magnitude of vector, negative in part.
- feathermoon
- · Replies 3 ·
Minimum separation between pucks
- GingerKhan
- · Replies 11 ·
How to Calculate the Inclination Angle of a Plane from Acceleration?
- tarheels88
- · Replies 8 ·
What are the magnitude and direction of the friction force?
- skysunsand
- · Replies 3 ·
Circular motion with no frictional force
- lucas1
- · Replies 1 ·
What is the largest value of Fw the cords can withstand?
- badhorserides
- · Replies 3 ·
What is force if acceleration is .75? (inclined plane)
- skysunsand
- · Replies 3 ·
Design a $40 Egg-Protecting Device for the Egg Drop Challenge
- Doominater84
- · Replies 5 ·
Specific Heat Capacity of metal in water
- jendrix
- · Replies 6 ·
Is it possible to find Vout in this case ?
- Femme_physics
- · Replies 24 ·
What Is the Heat Capacity in an Isothermal Process?
- maurice2705
- · Replies 1 ·
Given linear density of two strings of total length 4m, find total length.
- chris_avfc
- · Replies 18 ·
Calculating Work Done by Air in a Siphon Pump for Water Barrel
- chingel
- · Replies 17 ·
Collision with an object after circular motion.
- dttah
- · Replies 8 ·
Calculating Density of an Object Based on Submersion Percentage
- deathshero
- · Replies 7 ·
Elastic collision with the floor
- dttah
- · Replies 2 ·
Calculating Gravitational Force on a Point Mass in the Presence of a Cavity
- maurice2705
- · Replies 1 ·
Coefficient of static friction of uniform rod
- maurice2705
- · Replies 2 ·
Rain and man problem. (relative motion)
- Aakaersh
- · Replies 1 ·
What is the angle of displacement from the vertical for a hanging mass on Earth?
- rbwang1225
- · Replies 11 ·
(21-23) thermodynamics problem. Finding efficiency for the human body
- qspartan570
- · Replies 1 ·
What Are the Forces on a Supported Beam?
- jjd101
- · Replies 52 ·
Spring oscillation amplitude and period after inelastic collision
- jjd101
- · Replies 13 ·
Gravitational Potential Energy (Multiple Choice Question)
- McAfee
- · Replies 5 ·
How Do You Calculate the Period of SHM from a Cosine Function?
- Crusaderking1
- · Replies 4 ·
Electric potential inside a spherical shell
- TrolliOlli
- · Replies 1 ·
Rotational Kinematics/Momentum Problem
- jjd101
- · Replies 23 ·
Work and internal energy change during gas compression at constant pressure
- qspartan570
- · Replies 1 ·
What is the Frequency of Small Amplitude Oscillations in an Inverted Pendulum?
- jjd101
- · Replies 14 ·
Designing a slow-descending yo-yo with counter-torque
- physics094
- · Replies 5 ·
Velocity Ball In Air: 4s, 81.6m
- C42711
- · Replies 6 ·
Force between 2 parallel, charged, conducting sheets.
- khfrekek1992
- · Replies 2 ·
Nonuniform circular motion problem.
- feathermoon
- · Replies 4 ·
Calculating Time and Velocity of a Falling Object
- C42711
- · Replies 2 ·
Rate of heat transfer passing from the boiling water to the ice bath
- lalahelp
- · Replies 6 ·
Entropy of a quantum sized material
- phoenix133231
- · Replies 1 ·
Finding maximum speed and amplitude from two oscillator states
- jjd101
- · Replies 4 ·
Fnding the rms speed of hydrogen
- qspartan570
- · Replies 3 ·
Would a perfectly uniform sphere survive tidal forces in a black hole?
- studentxlol
- · Replies 1 ·
Tension in Strings Holding Up Shelf
- ARL91
- · Replies 2 ·
Finding Amplitude and Acceleration in a Spring Oscillation Problem
- jjd101
- · Replies 24 ·
Entropy Change of Ice-Water System
- majormuss
- · Replies 11 ·
Why is momentum conserved for objects in free fall if gravity changes momentum?
- -Dragoon-
- · Replies 1 ·
How Much Oxygen Does a Medical Cylinder Hold at Different Pressures?
- qspartan570
- · Replies 1 ·
Finding the harmonics of a flute
- Greywolfe1982
- · Replies 7 ·
Compute acceleration and tension in the cord
- skysunsand
- · Replies 4 ·
How Do You Calculate the Kinematics of Touching Spheres Under External Force?
- dougla
- · Replies 8 ·
How fast does the 75 kg diver leave the 300 kg raft?
- jer_hall99
- · Replies 2 ·
Relative Time Dilation and Aging in Space Travel
- disneygirl828
- · Replies 4 ·
Direction of Induced EMF (Faradays Law) Confusion
- jegues
- · Replies 2 ·
Box being pushed up an inclined plane
- bajangal1
- · Replies 5 ·
Induced EMF Moving Current Loop
- jegues
- · Replies 2 ·
Difficult circular motion problem
- utm01
- · Replies 5 ·
Constructive and destructive interference from two loudspeakers 2.00 m apart
- forestmine
- · Replies 26 ·
Calculating angular acceleration and angular velocity
- Dave_1984
- · Replies 10 ·
Sled with person jumping off then compressing a spring
- tomgackle
- · Replies 7 ·
How to Calculate the Angle for a Boat Crossing a River with a Current?
- bajangal1
- · Replies 2 ·
Giraffe Pressure Difference - 20Pa
- disneygirl828
- · Replies 1 ·
How fast is an ocean wave with given displacement and time function?
- forestmine
- · Replies 6 ·
Find Displacement Amplitude for 79.8dB Wave
- Gavandeshaq
- · Replies 1 ·
Finding image height when magnification and object height are unknown
- PhysicsGirl90
- · Replies 7 ·
Does releasing weights affect angular speed on a rotating stool?
- kirby27
- · Replies 14 ·
Buoyant Force and Displacement Volume of a Boat in Lake Superior
- disneygirl828
- · Replies 4 ·
Solving Physics Homework: Velocity & Time of Rock in a Hole
- swiftracer
- · Replies 5 ·
Calculating Moment of Inertia of a cube
- yttuncel
- · Replies 13 ·