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 to Calculate Induced EMF in a Wire Loop Near a Solenoid
- whatisreality
- · Replies 10 ·
Collision involving blocks and pulley
- Tanya Sharma
- · Replies 73 ·
What is the minimum range of angles?
- mss90
- · Replies 2 ·
Electric Field of a Uniformly Charged Cylindrical Surface
- erisedk
- · Replies 2 ·
DC Motor: Solving for Load Speed w/ Torque Relation
- theone
- · Replies 1 ·
Is the worksheet image too difficult to read?
- Judoliam
- · Replies 1 ·
Will house burn down enclosing camera in foam ball?
- Paul Uszak
- · Replies 8 ·
Calculate the net force on the object
- subopolois
- · Replies 1 ·
Calculating Relativistic Momentum for Physics Students
- Cell_52797
- · Replies 3 ·
Relationship Between Bicycle Tire Pressure and Speed
- doctorwho55
- · Replies 3 ·
Very basic question on particle dynamics
- TomW17
- · Replies 4 ·
Projectile motion with linear air resistance and characteristic time
- ma18
- · Replies 12 ·
What is the direction of induced current
- nawand
- · Replies 6 ·
Peak current flowing in a circular metal loop?
- Mattman182
- · Replies 1 ·
Speed of a satellite above the earth?
- Tangeton
- · Replies 2 ·
Man walking on a floating canoe: how far does it move?
- 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 ·
Angular resolution using the Rayleigh criterion formula
- 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 ·
Estimating Milky Way mass from orbital velocity and radius
- shanepitts
- · Replies 4 ·
AwaGreat, Awa! Looking forward to your response.
- Awanerv
- · Replies 8 ·
Frequency of a simple pendulum with 80cm length
- 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 ·
When can reflectance equal transmittance at normal incidence?
- 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 ·
Finding rope length to lift 2200 kg elephant 15 m with pulley
- 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 ·
Tension in a cable between two vertical poles with sag
- 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 ·
Time to fill 180 m³ tank from pipe with 22 m/s water flow
- 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 ·
Finding current through Rg using symmetry in a circuit with two voltage sources
- princejan7
- · Replies 7 ·
Rank the volume of the three points with the weakest first
- Nina stena
- · Replies 19 ·
Circular orbit in Yukawa potential: finding angular momentum and energy
- Nigsia
- · Replies 15 ·
Thermal expansion (Simple) (attempt posted)
- Bjorn J
- · Replies 1 ·
Finding distance and force from a 15 s acceleration-time graph
- 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 ·
Torque, momentum and falling distance in Lord of the Rings problem
- 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 ·
At what angle does a mass slide off a frictionless sphere?
- 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 ·