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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Pendulum/planet circular motion
- mintyyf
- · Replies 2 ·
Net Electric Force on Charged Spheres
- rum2563
- · Replies 8 ·
Acceleration of a falling pinned stick
- Droo
- · Replies 1 ·
Mercury thermal expansion in glass flask
- Abarak
- · Replies 1 ·
Calculating Specific Heat of Unknown Sample Using Calorimetry
- trah22
- · Replies 2 ·
Centripetal Acceleration of curved exit ramp
- rash219
- · Replies 2 ·
Time for Light to Travel 54cm Through Glycerine in Aquarium
- leehom
- · Replies 1 ·
Calculating Angular Acceleration of Hollow Sphere with Pressure Difference
- WhoThat3
- · Replies 10 ·
Why Are Particles Deflected in Opposite Directions in a Magnetic Field?
- BMWPower06
- · Replies 4 ·
Number of lines/cm for the grating
- physicsstoodent
- · Replies 1 ·
Electrostatics concepts: resistors, capacitors, and fields
- rapha
- · Replies 4 ·
Tension between hanging boxes B and C in pulley system
- snoggerT
- · Replies 7 ·
Magentic induction and shielding
- serverxeon
- · Replies 2 ·
Kinematics Problem: Find Constant Separation of Ships
- f(x)
- · Replies 2 ·
Work done pushing a box at constant speed against friction
- mintyyf
- · Replies 6 ·
Total internal reflection at 60° face of zircon block in water
- floridianfisher
- · Replies 4 ·
Time for a projectile to reach orbital speed with given force
- Powerworks
- · Replies 1 ·
What is the Intensity Formula for Triple-Slit Interference?
- patapat
- · Replies 2 ·
Force on spinning ice skater's hand as a multiple of hand weight
- Abarak
- · Replies 2 ·
How Do You Calculate Acceleration and Tension in a Frictionless System?
- Aherald117
- · Replies 1 ·
The Mass of HD68988 Relative to Our Sun is 8.6 Times the Mass of the Sun
- Abarak
- · Replies 2 ·
Finding electric field from potential V(x,y,z) = A(x²,-3y²,z²)
- quackzilla
- · Replies 1 ·
Calculating Translational Energy in a Nitrogen Gas Vessel
- trah22
- · Replies 7 ·
What is the magnitude of the force of the block on the horizontal surface?
- Nance
- · Replies 2 ·
What is the acceleration of a falling rock with air resistance?
- Nance
- · Replies 7 ·
Why is the velocity of an H2 molecule after colliding with a 60nm photon so low?
- physgirl
- · Replies 2 ·
Does the rock travel 321m vertically when kicked off a bridge?
- MIA6
- · Replies 3 ·
What is the Average Power of a Sled Being Pulled with a Constant Force?
- ssb
- · Replies 5 ·
Air pressure in a tire after compression and heating to 40°C
- trah22
- · Replies 15 ·
Terminal velocity with Reynods# and Drag Coeff.
- joe3
- · Replies 1 ·
Force of air resistance in wind tunnel
- hover
- · Replies 5 ·
What Is the Ratio of Ms to Mc?
- WhoThat3
- · Replies 3 ·
How Do You Calculate the Index of Refraction in a Light Refraction Problem?
- floridianfisher
- · Replies 3 ·
Finding resistance of a carbon resistor with resistivity formula
- The Vin
- · Replies 3 ·
Which type of image does a solar oven and search light produce?
- leehom
- · Replies 5 ·
Translational energy vs. kinetic energy
- physgirl
- · Replies 3 ·
Find acceleration only given distance of slop and angle of elevation.
- avsj
- · Replies 3 ·
Calculating Kinetic Energy of a Charge at a Given Distance
- Aerosion
- · Replies 4 ·
Photon collision with H2 molecule
- physgirl
- · Replies 4 ·
Rate of current changing through an inductor
- supersunshine
- · Replies 1 ·
What is the length of the catapult?
- FilthyOtis
- · Replies 1 ·
Harmonics and fundamental frequency questions
- esmeco
- · Replies 2 ·
Finding the unknown force direction for ring in equilibrium
- RocketSurgery
- · Replies 2 ·
Motion of particle on wedge on smooth surface
- mybrainhurts
- · Replies 3 ·
Angular Momentum of a conical pendulum
- Momentum09
- · Replies 1 ·
Finding magnetic field component
- wendo
- · Replies 1 ·
Calculating Final Angular Speed in a Rotating System with Added Mass
- skinnyabbey
- · Replies 6 ·
Calculating Horizontal Velocity of Rock Kicked Off Bridge in Arkansas
- MIA6
- · Replies 4 ·
Rotational motion of a uniform solid disk
- Momentum09
- · Replies 5 ·
How to Calculate the Speed of a Solid Sphere on a Frictionless Incline?
- Momentum09
- · Replies 2 ·
Problem about constructing graphs.
- MIA6
- · Replies 4 ·
Finding electric potential difference
- wendo
- · Replies 3 ·
Speed of image relative to mirror when walking at an angle
- Mekiel
- · Replies 15 ·
Question on refraction of light
- daisyhur
- · Replies 2 ·
Calculating Density of Vapor After Heating 3-Liter Vessel
- glitchy
- · Replies 2 ·
Speed of transverse wave in a rope with given tension and mass
- marcellopezciur
- · Replies 3 ·
Which variables are constant in different types of projectile motion?
- avsj
- · Replies 2 ·
How Does Doubling Pressure Affect Temperature in a Sealed Argon Tank?
- glitchy
- · Replies 2 ·
What is the initial velocity of the rocket?
- suxatphysix
- · Replies 3 ·
Force on supports of a diving board with diver at end
- Momentum09
- · Replies 2 ·
Can someone check if i'm doing this right?
- leehom
- · Replies 2 ·
Questions on Newton's Law of Gravitation
- toutou
- · Replies 2 ·
Solving Circuit Problems: Finding Current in a Complex Circuit
- The Vin
- · Replies 2 ·
Electric Field of Two Unequal Point Charges
- dystorsion
- · Replies 3 ·
How far is the image of the star from the concave mirror?
- leehom
- · Replies 3 ·
Image location and magnification for object at center of curvature of concave mirror
- leehom
- · Replies 8 ·
Momentum Conservation - so hard
- rum2563
- · Replies 4 ·
Apparent distance of object in planar mirror
- leehom
- · Replies 16 ·
What does two-dimensional motion mean?
- MIA6
- · Replies 4 ·
Finding the second force when a particle moves at constant velocity
- snoggerT
- · Replies 2 ·
Calculating Rotational Kinetic Energy of a Falling Ball-Rod System
- Momentum09
- · Replies 10 ·
Not an actual hw problem, but it might as well be
- lampshade
- · Replies 1 ·
Ladder Question - Force of friction required to prevent ladder from slipping
- avsj
- · Replies 4 ·
Motion in a circle of helicopter rotor
- Edwardo_Elric
- · Replies 1 ·
Proving Constant Horizontal Velocity for Particle w/ Drag Force
- Demonsthenes
- · Replies 1 ·
How Is the Net Gravitational Force Calculated in a Triangular Particle System?
- Demonsthenes
- · Replies 1 ·
Hydrometer rod length, average density, and mark spacing for nine density values
- ^DsOoMmI^
- · Replies 1 ·
Three Blocks with Forces: Calculating Contact Forces
- chopramon
- · Replies 2 ·
Particle with drag force proportional to speed squared
- Demonsthenes
- · Replies 2 ·
Gravitational force moon problem
- Demonsthenes
- · Replies 1 ·
What is the total change in angle of reflection when mirror is tilted by 80?
- leehom
- · Replies 1 ·
Calculating the Distance of an Eye Chart: Tanya's Story
- leehom
- · Replies 1 ·
Trig problems (relating to FBD)
- mujadeo
- · Replies 2 ·
Bicycle wheel angular velocity and deceleration with braking
- ladolce
- · Replies 2 ·
Determining Car Speed Using Doppler Effect and Frequency Change
- exi
- · Replies 11 ·
Two blocks on an incline, trying to find acceleration
- mujadeo
- · Replies 13 ·
What does the 'sum' in vector addition refer to?
- MIA6
- · Replies 1 ·
How Do Capacitors Store Charge in Different Configurations?
- ilanwamh
- · Replies 2 ·
Doppler Effect II (Both observer and source in motion)
- exi
- · Replies 4 ·
Superposition of moments of Inertia
- Momentum09
- · Replies 5 ·
Frictionless pulley and static equilibrium
- heartofaragorn
- · Replies 2 ·
Gravitational Force on a 1.2kg Textbook at Various Distances from Earth's Center
- FilthyOtis
- · Replies 2 ·
An object rolling along a hemispherical bowl
- Momentum09
- · Replies 3 ·
Angular motion using Newton's Laws
- Sparky500
- · Replies 29 ·
Understanding Newton's Second Law in a System of Two Connected Blocks
- sweet-buds
- · Replies 10 ·
Solving for Kinetic Energy with Circular Wheel and Weight: Equation Included
- Momentum09
- · Replies 5 ·
How Does Archimedes' Principle Apply to Hydrometer Design?
- ^DsOoMmI^
- · Replies 1 ·
Tension of rope between two blocks
- sweet-buds
- · Replies 1 ·