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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Circular Motion -- Finding Centripital Acceleration, Speed, etc.
- beniamin
- · Replies 7 ·
Capacitor value -- series/parallel caps to increase voltage
- anand raj
- · Replies 2 ·
What is the effect of a fridge on the temperature of a well-isolated house?
- franceboy
- · Replies 24 ·
What is the work required to push three protons to form an nucleus?
- Jonsson
- · Replies 5 ·
Finding the cross-sectional area of a steel rod for Young's modulus calculation
- fightboy
- · Replies 1 ·
Solving a Pole-Leaning Problem with Negligible Mass
- Born
- · Replies 14 ·
Vertical spring with one attached mass and one unattached
- Razvan
- · Replies 2 ·
Why Is Resultant Wave Energy Proportional to Amplitude Difference?
- somecelxis
- · Replies 7 ·
Escape velocity of an Earth-Moon system
- cragar
- · Replies 3 ·
What Are the Speeds of Two Cars Meeting on a Highway?
- ajay.05
- · Replies 4 ·
Beats- time taken for waves to be in phase again
- somecelxis
- · Replies 4 ·
Calculating average energy of a system with 3 energy levels
- thercias
- · Replies 2 ·
Find heat loss given metabolic rate in a closed system
- fishes
- · Replies 3 ·
Potential at all points due to uniformly charged infinite cylinder
- oddjobmj
- · Replies 1 ·
How Does Adding a Resistor Affect Power Dissipation in a Parallel Circuit?
- Alexander2357
- · Replies 9 ·
Finding Expected Lateral Displacement From a Risley Prism
- Pythia
- · Replies 1 ·
Find an electric field around a hollow insulating sphere.
- hockey
- · Replies 1 ·
Changing the distance between capacitor plates
- Feodalherren
- · Replies 4 ·
Find energy lost due to friction, and final speed of block.
- manrayboy
- · Replies 1 ·
A ring with charge Q and radius 'r'
- squelch
- · Replies 5 ·
Positive charge "Q" is distributed uniformly around a semicircle
- squelch
- · Replies 8 ·
Deceleration of Train to Avoid Collision
- egrr10
- · Replies 1 ·
A projectile kinematic in 2 d problem using baskeballs?
- chapstick42
- · Replies 1 ·
Thick spherical shell Question.
- twinpair
- · Replies 5 ·
Kinetic Friction and Hemispherical Dome
- engineer2b
- · Replies 1 ·
Velocity and height at each time interval
- mastermind1
- · Replies 3 ·
Value of theta of first minimum
- desmond iking
- · Replies 3 ·
Correct Distance of 28.856m between 2 Points at 350°C
- Karol
- · Replies 5 ·
Specific heat capacity of copper
- sunquick
- · Replies 3 ·
Finding coefficient of thermal expansion
- Junkwisch
- · Replies 1 ·
Finding charge and separation in a parallel plate capacitor
- camel-man
- · Replies 10 ·
Why Are We Interested In Node Voltages?
- xatu
- · Replies 11 ·
How to compute for Pressure without the acceleration on the Force?
- nms03
- · Replies 4 ·
Computing Theoretical and Experimental Acceleration
- kukumaluboy
- · Replies 2 ·
Projectile Motion: Angle of Impact
- stripedcat
- · Replies 2 ·
Find velocity and acceleration (positive or negative)
- Kerrie yu
- · Replies 8 ·
Canoe Velocity Relative to River: 0.413m/s
- zippeh
- · Replies 4 ·
How high will the projectile be at 5 km downrange?
- jdawg
- · Replies 1 ·
Ratio of contact forces between blocks in a chain of eight blocks
- The Wanderer
- · Replies 4 ·
Electrical potential inside a sphere using integration
- PANTS187
- · Replies 1 ·
Incline plane problem - acceleration, time, and velocity
- Schnitzel
- · Replies 1 ·
How Fast Should the Second Stone Be Thrown to Hit the Ground Simultaneously?
- Physicsnoob90
- · Replies 6 ·
Rotating a laser at Moon so that spot has v>c
- EnlightenedOne
- · Replies 3 ·
Finding acceleration on a position-time graph
- salmayoussef
- · Replies 6 ·
What Stresses Keep a Shear-Stressed Block in Equilibrium?
- Will Flannery
- · Replies 12 ·
Freight train acceleration: why v=v0+at gives wrong answer
- remcalister
- · Replies 3 ·
Sound waves and amplitudes Problem
- alingy1
- · Replies 2 ·
Position vs Time Lab: Modeling the Relationship for Motorized Cars
- MrPyromaniac
- · Replies 2 ·
What Does Derivation Mean in a General Relativity Context?
- bmb2009
- · Replies 3 ·
What is the Velocity of a Car at the End of the Initial 2.09-Second Interval?
- Physicsnoob90
- · Replies 14 ·
How much oxygen absorbing area does an insect have?
- salmayoussef
- · Replies 7 ·
How many liters of shot does Ben need to carry out his demonstration?
- mshiddensecret
- · Replies 1 ·
Velocity of a single-stage rocket
- B3NR4Y
- · Replies 10 ·
Determine Coefficient of Friction
- killaI9BI
- · Replies 12 ·
What is the Correct Electric Charge Force Diagram for a Single Charge?
- Kavorka
- · Replies 2 ·
Understanding Physics Symbols: Cos∠ and Sin∠
- Maddie1609
- · Replies 2 ·
Minimum kinetic energy of an Alpha particle confined to a nucleus
- Brianrofl
- · Replies 4 ·
Use dimensional analysis to derive Poiseuille's Law
- devon
- · Replies 12 ·
Two charges touching each other
- Rectifier
- · Replies 4 ·
Diffusion rate of oxygen through skin
- fishes
- · Replies 2 ·
Magnitude of resultant of three force as small as possible
- redtop2
- · Replies 1 ·
Hooke's Law- measurement of mass/weight
- thennathalie
- · Replies 10 ·
Divergence in cylindrical/spherical coordinates
- deedsy
- · Replies 1 ·
Thermal Elongation of Alumina: 0.00036
- Karol
- · Replies 4 ·
What does V1 mean when marked at a point in a circuit?
- string
- · Replies 2 ·
How to Calculate the Motion of a Dropped Fish in a Projectile Problem
- IronManTable
- · Replies 11 ·
Deceleration of a man falling off a cliff into snow
- salmayoussef
- · Replies 4 ·
Block accelerating down incline with different friction coefficients
- physicshelpppp
- · Replies 1 ·
What Speed Does the Railway Carriage Achieve After an Inelastic Collision?
- physicshelpppp
- · Replies 9 ·
Charge Leakage in Suspended Spheres with Varying Approach Velocity
- DriggyBoy
- · Replies 2 ·
Solving for Velocity as a function of height (y) with quadratic drag
- Yosty22
- · Replies 2 ·
Friction force on an inclined plane
- Daisy
- · Replies 2 ·
Velocity Lorentz Transformation
- teaJ
- · Replies 2 ·
Fluid statics - two water tanks
- toothpaste666
- · Replies 6 ·
Calculating Convective Heat Loss for Unclothed Person
- swiftmatt
- · Replies 10 ·
Book sinking in ocean: net force from gravity and buoyancy
- tmschmidt24
- · Replies 3 ·
How Does Breathing Affect Water Vaporization and Caloric Loss?
- swiftmatt
- · Replies 3 ·
How Does Mass Affect the Oscillation Frequency of a Spider's Web?
- toothpaste666
- · Replies 14 ·
Circuit source current question
- orangeincup
- · Replies 3 ·
Finding absolute and relative uncertainty in functions
- Ali0086
- · Replies 5 ·
Red Fringe Count in Young's Double Slit Experiment
- somecelxis
- · Replies 7 ·
Spring stretched by weight, find spring constant
- SarahLynn2012
- · Replies 3 ·
Find the flux through the equilateral triangle with corners at
- apebeast
- · Replies 3 ·
Finding tension in a wire between two charged objects
- NickPA
- · Replies 1 ·
Solving Gauss's Law Problem: Excess Electrons in Plastic Sphere
- A.J.710
- · Replies 1 ·
Uncertainty in falling object height from (2.0 ± 0.1)s
- psstudent
- · Replies 3 ·
Modern Physics-Einstein's Postulates/Relativistic Velocity
- giraffe
- · Replies 6 ·
Why is acceleration at the collision point greater than between bounces?
- Karol
- · Replies 4 ·
Solve KVL: Find V1, V2 Using Voltage Divider Rule
- orangeincup
- · Replies 1 ·
Solved: Width of Slit with Monochromatic Light 550nm is 0.055mm
- somecelxis
- · Replies 4 ·
Maximum Voltage Across Inductor in Series RLC Circuit Occurs at Which Frequency?
- anand raj
- · Replies 5 ·
Formula for calculating collision speed from distance and time
- Daisy
- · Replies 1 ·
Physical Pendulum Formula Derivation
- Parto0o
- · Replies 1 ·
Calculating density of a perovskite structure, a question, phase diagr
- Junkwisch
- · Replies 5 ·
Why is acceleration multiplied by half of t squared in kinematics?
- benshields
- · Replies 3 ·
How to Solve Parallel Circuit Problems in Electronics
- camel-man
- · Replies 4 ·
Can you solve a series circuit problem with 3 resistors and a 24V battery?
- camel-man
- · Replies 4 ·
What is the Maximum Angular Velocity of a Reverse Three-Speed Transmission?
- orangeincup
- · Replies 8 ·
Analog to digital temperature sensor
- orangeincup
- · Replies 10 ·
Particle Angular Velocity Problem
- user3298
- · Replies 1 ·