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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Canoe and Man Motion: Finding the Relationship Between Distance Traveled
- alex.pasek
- · Replies 19 ·
What Is the Focal Length of the Concave Lens in This Lens-Mirror Combination?
- avalanche007
- · Replies 1 ·
Electric field using dielectric constant
- Issy
- · Replies 9 ·
How does a black body emit as much energy as it absorbs?
- GM Jackson
- · Replies 5 ·
Magnitude and Direction of an (E) Electric field of a square
- Sipko
- · Replies 9 ·
Calculating Force Needed to Maintain Constant Speed in Car
- TT0
- · Replies 8 ·
Find the change of internal energy of the air.
- MaiteB
- · Replies 5 ·
Magnetic moment of paramagnetic crystal
- Je m'appelle
- · Replies 1 ·
Did I Properly Answer the Angular Resolution Question?
- shanepitts
- · Replies 3 ·
Find the time needed to warm the water to a temperature
- MaiteB
- · Replies 3 ·
Is My Approach to Finding Absolute Magnitude Correct?
- shanepitts
- · Replies 5 ·
Find the molar specific heat for each gas.
- MaiteB
- · Replies 1 ·
Describe the motion of the rock particle at point B during t
- physicsSOS
- · Replies 9 ·
Calculating Quantum Tunneling Probability - 1.524 eV, 343 pm, 2.654 eV
- alexis12
- · Replies 1 ·
A simple astrophysics rough estimate exercise
- shanepitts
- · Replies 4 ·
AwaGreat, Awa! Looking forward to your response.
- Awanerv
- · Replies 8 ·
Calculating Frequency of a Simple Pendulum | Length 80cm
- CannonSLX
- · Replies 2 ·
Power Dissipated by 60W Bulb in 20V Source[/B]
- estike
- · Replies 17 ·
Beat frequency and length question. (grade 11)
- Ethan_Tab
- · Replies 19 ·
Reflectance Equal to Transmittance
- says
- · Replies 2 ·
Equivalent Emf in case of polarity being changed
- Quotes
- · Replies 3 ·
Energy, momentum and elastic collisions
- yellowfish
- · Replies 7 ·
How Does a Squirrel's Motion Affect the Dynamics of a Rotating Ring?
- Karol
- · Replies 26 ·
Uniform Circular Motion: a concept question
- kostoglotov
- · Replies 4 ·
Speed of a jet (challenging doppler effect)
- Ethan_Tab
- · Replies 3 ·
Find the mass of ice that melts during the hit.
- MaiteB
- · Replies 10 ·
Magnetic equivalent circuit question
- theone
- · Replies 8 ·
Energy release from beta plus decay
- joeshmo
- · Replies 3 ·
Find the growth of temperature of the gas
- MaiteB
- · Replies 2 ·
Interference pattern for thin films
- devd
- · Replies 3 ·
Average kinetic energy of particles of an ideal gas
- Sipko
- · Replies 9 ·
Solving Inclined Plane Problems
- zesi
- · Replies 5 ·
Efficiency calculation for solar cells
- ExoP01
- · Replies 1 ·
Finding possible heights of mercury in two joined manometers
- toforfiltum
- · Replies 23 ·
Find the force which makes the box jump
- kaspis245
- · Replies 39 ·
Circuit Components-Potential differencd across LDR (photoresistor)
- wei1006
- · Replies 2 ·
How do equal water depths affect gravitational potential energy?
- toforfiltum
- · Replies 12 ·
Why Does a Smaller Mass Reach the End of a Frictionless Track First?
- Q7heng
- · Replies 5 ·
Concept: Question on formation of parallel capacitors
- physicslearner
- · Replies 3 ·
Decelerating box on a truck and work
- physicsisgreat
- · Replies 14 ·
Can one calculate velocity from force used?
- Q7heng
- · Replies 3 ·
System analysis of a centrifuge
- Vorrawit
- · Replies 3 ·
Total angular momentum of atom in its ground state
- daleklama
- · Replies 6 ·
Calculating the Period of a Simple Harmonic Oscillator with a Pivoted Metal Rod
- MMONISM
- · Replies 3 ·
An athlete executing a long jump leaves the ground at a 29.5
- Superstar
- · Replies 4 ·
Electric charge and potential energy
- brake4country
- · Replies 12 ·
How to show that Electric and Magnetic fields are transverse
- leonardthecow
- · Replies 3 ·
Lifting an elephant with a pulley & rope
- Lamont
- · Replies 7 ·
Mechanics Qualifying Exam Question
- Jeremymu1195
- · Replies 10 ·
Expressing current through a circuit
- Ozmahn
- · Replies 3 ·
Finding the Ratio and Height of a Double Ball Drop Collision
- Puddles
- · Replies 2 ·
Elastic Collision Formula: Solving for Final Velocity and Mass Ratios
- Puddles
- · Replies 2 ·
What direction does friction point in a diagram of a spring?
- Danya314
- · Replies 11 ·
What is the average power of the warmer bath in this thermal dynamics problem?
- MMONISM
- · Replies 6 ·
Melting ice - how many photons?
- mss90
- · Replies 1 ·
How Is Maximum Kinetic Energy Calculated in the Photoelectric Effect?
- mss90
- · Replies 4 ·
How can stepping up and down the voltage save energy in power transmission?
- Angie K.
- · Replies 2 ·
Interferometer to measure refractive index of a gas
- Robsta
- · Replies 1 ·
Atwood Incline Pulley problem with two pulleys
- Puddles
- · Replies 7 ·
What is the direction of current flow in coil X when placed near coil Y?
- anonymousZ10
- · Replies 5 ·
Having trouble solving this problem due to its wording
- Dellb89
- · Replies 26 ·
Refraction of Light question assistance needed
- Issy
- · Replies 3 ·
How Does Conservation of Momentum Affect Kinetic Energy in Collisions?
- Puddles
- · Replies 8 ·
Filling a Tank with Water: Solving for Time
- Chase11
- · Replies 9 ·
Magnetic fields out of long wires
- winterbell
- · Replies 2 ·
Solving Water Storage Tank Problem with Bernoulli's Equation
- VanessaN
- · Replies 3 ·
The interference of light and diffraction
- Sox281212
- · Replies 2 ·
Can symmetry help me solve this circuit? Circuit diagram question
- princejan7
- · Replies 7 ·
Rank the volume of the three points with the weakest first
- Nina stena
- · Replies 19 ·
Angular momentum & Energy using Yukawa's potential
- Nigsia
- · Replies 15 ·
Thermal expansion (Simple) (attempt posted)
- Bjorn J
- · Replies 1 ·
Acceleration-time graph: average distance and average force
- moenste
- · Replies 13 ·
Question regarding induced e.m.f
- anonymousZ10
- · Replies 4 ·
The Relationship between Current and Temperature in Semi-Conductors
- Jimmy87
- · Replies 6 ·
Metal sheets of various mass left out in the Sun
- Flucky
- · Replies 10 ·
How does Carnot Cycle Expand and Compress Isentropically?
- I<3NickTesla
- · Replies 5 ·
Help I made a physics problem for a project
- Scott_j
- · Replies 20 ·
IGCSE Physics Boyle's law question
- yohanes775
- · Replies 2 ·
Moment of inertia of rod about an axis inclined
- Raghav Gupta
- · Replies 37 ·
How much does the spring stretch?
- kaspis245
- · Replies 7 ·
What Is Back EMF in DC Motors and How Does It Affect Performance?
- navm1
- · Replies 3 ·
Help with a work/kinetic energy/potential energy problem
- toesockshoe
- · Replies 49 ·
Create DIY Light Intensifier Using Disposable Materials
- Zoe F
- · Replies 4 ·
Projectile Motion/ Air Resistance Question
- VanessaN
- · Replies 3 ·
Show that the Energy Transfer is given by
- vmr101
- · Replies 11 ·
Tension on a Rope Deflected by a Pulley: Differentials
- russphelan
- · Replies 1 ·
How do I reduce the outer loop in the first question with 3 inputs?
- John54321
- · Replies 11 ·
Major and minor axes of elliptically polarized light
- Robsta
- · Replies 2 ·
Overtones in a string (equation for wave)
- Incand
- · Replies 3 ·
Need clarification on adiabatic process and heat capacity
- worryingchem
- · Replies 51 ·
Electricity flow in a light sensitive theft alarm
- FaridAbhmad
- · Replies 9 ·
Final Velocity of 5.0g Bullet: 117m/s
- Ayesha Shafique
- · Replies 5 ·
How Does Gun Speed and Bullet Type Affect Projectile Motion?
- 674411ST
- · Replies 1 ·
What Is the Potential of a Spherical Shell with a Grounded Inner Sphere?
- Alettix
- · Replies 15 ·
Can someone explain to me what centripetal acceleration?
- toesockshoe
- · Replies 18 ·
How Accurate Is Lucy's Measurement of Gravity in Melbourne?
- Ruturaj Vaidya
- · Replies 4 ·
Thermodynamics question with heat gain from surroundings considered
- FaroukYasser
- · Replies 2 ·
Charging capacitors in series with another capacitor
- LeoWongFromHK
- · Replies 5 ·
Helmholtz Free Energy Legendre Transformation
- says
- · Replies 1 ·
Why are P/M and D/H defined oppositely in Electromagnetism
- I<3NickTesla
- · Replies 2 ·