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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Deformation of a spring being accelerated
- Like Tony Stark
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How Is pV = 1/3 Nmc^2 Derived in Kinetic Theory?
- etotheipi
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Find the distance that the block has to move so that....
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Prove that a mass has simple harmonic motion
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Confusion in Adding Vectors: How to Find Missing Magnitudes and Angles?
- Alexandra Fabiello
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Rewriting the Ampere's law in term of free currents only
- Riemann9471
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Using Y to Delta Transformation to Find Currents
- rugerts
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Why is the change in entropy of a heat pump in one cycle equal to zero?
- yecko
- · Replies 18 ·
Change in the energy content of an isobaric process
- diaaa2
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How Do Coriolis and Centrifugal Forces Affect Train Motion?
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How can I input formulas and images on Physics Forums?
- Overberg
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Kinematic Equations: Find the time t when two objects meet
- StephanieSamperio
- · Replies 10 ·
Deriving an equation for theta via the Projectile Motion Trajectory Eq
- lightlightsup
- · Replies 3 ·
Is the Calculation of Spring Deformation in an Accelerating Room Correct?
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Maximizing radiation southward, minimizing it northward, antennas
- PhDeezNutz
- · Replies 7 ·
What is the relationship between Helium's atomic mass and the Rydberg constant?
- MaestroBach
- · Replies 1 ·
Static Friction in Circular Motion
- Softwarm
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Work and energy of an object on a ice slope
- ac7597
- · Replies 7 ·
Dielectric interface plate capacitor at angle alpha
- lena_2509
- · Replies 1 ·
Work of a object moving across surfaces with different friction
- ac7597
- · Replies 3 ·
How can we find the center of mass of a solid cone?
- Nimarjeet Bajwa
- · Replies 3 ·
Understanding the Math Behind A: Minimum Length of Plane Mirror
- User1265
- · Replies 14 ·
Show that the flywheel inside the train counteracts lean in a curve
- Karl Karlsson
- · Replies 4 ·
Blocks in a room which is being accelerated
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Convert J/mol k into atm cm^3/mol k
- Mr-Thirty
- · Replies 6 ·
Work of gravity on an object sliding down a frictionless sphere
- ac7597
- · Replies 12 ·
Why do I feel centrifugal acceleration when standing on a revolving ball?
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Finding angular velocity for a rope to be cut
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Is the Normal Force on m2 Affected by Vertical Acceleration in Different Cases?
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Radiation Q: C Answr w/1cm Alum Plate?
- User1265
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Calculus Homework Check (vectors/forces)
- samstim
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Find the E-Field between plates when given only given part of the total voltage
- mhrob24
- · Replies 19 ·
Finding initial velocity when given only mass and distance
- jessie763
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Parallel circuit with internal resistance
- dbag123
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How much force do I exert on the Earth?
- cs44167
- · Replies 6 ·
"Tension: T1 vs T2 - What is Correct?
- physicswizard93
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Calculate the amount of charge in Amp*seconds
- dbag123
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Finding the acceleration of a pulley system including an inclined plane
- Majd64
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Find the electric field inside and outside of a spherical shell superposition
- Davidllerenav
- · Replies 12 ·
Find the angle so that it seems that Mars is approaching to you
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What is the magnitude of resultant force on a car on a banked curve?
- brsclownC
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Understanding Pseudo-Forces in Non-Inertial Frames
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Calculating constant of elasticity of springs in a car
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Rotating cylinder rolling without slipping in a B field
- jisbon
- · Replies 9 ·
Conservation of energy: a mass and pulley system
- smashueatu
- · Replies 11 ·
Acceleration acting on a block lying on a wedge (non-inertial frame)
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Tension in the string while it descends
- Asterast
- · Replies 8 ·
Temperature change brought about by radiation
- Sai Maurice
- · Replies 23 ·
Sink time of a cap with varying hole diameters
- Jefffff
- · Replies 21 ·
How to Solve Acceleration of Cart on 3 Different Slopes?
- LilRubyKinz
- · Replies 10 ·
Atwood System - max. height of the lighter object
- laurs
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Determine when (m), and how long the rocket should fire.
- pnstu
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Rotating a given vector about an axis
- brotherbobby
- · Replies 4 ·
Finding the angular velocity of a rotating arm
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Calculate the Heat Loss in a Hot Water Tank from a Shower
- Howlin
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Calculating the torque of the Laplace force on this coil
- merdeka
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Determine the potential energy function of the charged particle
- SLTH02
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What are the spatial dimensions of the plot?
- gabriellelee
- · Replies 1 ·
Finding the Thevenin equivalent by zeroing
- Jelsborg
- · Replies 6 ·
Finding the displacement of an electron between 2 charged rods
- jisbon
- · Replies 11 ·
Total work of a directional wind on a mailman
- ac7597
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What is the energy released by Tritium when it decays?
- SebastianRM
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Finding distance east given west dist., velocities, and average velocity
- Alexandra Fabiello
- · Replies 3 ·
Α baseball player throws the ball....
- Michael_0039
- · Replies 3 ·
Understanding Sum to Infinity in Geometric Progression
- Sarah0001
- · Replies 2 ·
Springs in series affecting the uncertainty
- edwan001
- · Replies 1 ·
How can air density be accurately calculated at different altitudes?
- Addez123
- · Replies 8 ·
How do I solve this physics problem of mechanics and Newton's laws?
- mayalevy2
- · Replies 2 ·
Kinetic friction coefficient calculation gives 0.45 instead of 0.37
- Addez123
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Correct statement about coils moving in and out of a magnetic field
- songoku
- · Replies 12 ·
Using Current and Voltage Dividers
- rugerts
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Electric energy density in the dielectric of a coaxial cable
- adamaero
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Work required to attach the bowstring to the bow?
- SLTH02
- · Replies 6 ·
Measuring position and velocity from a non inertial reference frame
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- · Replies 9 ·
Correct statement about gravitational force, field and potential
- songoku
- · Replies 12 ·
Prove that “leading clocks lag”
- alexmahone
- · Replies 8 ·
Acceleration and tension of a block on an inclined plane
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Calculate internal temperature and energy changes
- Pochen Liu
- · Replies 1 ·
Rounding of Final Value with Sig Figs
- Browntown
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Body connected to two parts of a rope on an inclined plane
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Gravitation attraction of a mountain
- ac7597
- · Replies 16 ·
Find the tensions acting in different ropes that conect three bodies
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Two cells in series with internal resistors -- calculate the current
- lalallaland
- · Replies 7 ·
Find the attractive force of gravity between two objects
- ac7597
- · Replies 8 ·
Understanding a Homopolar Generator
- jisbon
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Using Newton's Laws: Friction, Circular Motion, Drag Forces
- Sunwoo Bae
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Unit vector notation, why use 3 letters for a component?
- lboulden
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Identifying Serial and Parallel Connections
- rugerts
- · Replies 9 ·
What Is the Variation of Force With Respect to Radius in Circular Orbit?
- Samsmith47
- · Replies 5 ·
Mastering Motion on a Plane: Solving the Defiance Drake Question
- CJoy
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Phase difference between two points
- songoku
- · Replies 6 ·
Finding angular velocity when the CM is directly below the pivot
- jisbon
- · Replies 15 ·
Which force acts perpendicular to the side faces of an axe head?
- NathanRB
- · Replies 6 ·
Conceptual understanding/question of guass and Coulomb’s law
- Tryingtolearn123
- · Replies 5 ·
Forces acting on a block which is lying on another block
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Two batteries with inner resistor in parallel
- lalallaland
- · Replies 4 ·
Doubts on the sign of acceleration
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Box and a Spring on on an inclined plane
- ac7597
- · Replies 11 ·
Tangential Acceleration Problem, UCM
- stark3000
- · Replies 2 ·
Find the force needed for a body on an inclined plane to be static?
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- · Replies 1 ·