Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
A cylinder has two sides containing gas and water separately
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641
Finding the angular velocity of a pendulum
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3
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966
Number of bright fringes given by diffraction grating on a screen
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6
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3K
How Many Lines Per Millimeter Does the Diffraction Grating Have?
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5
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15K
What’s gone wrong with my derivation of the Lorentz Factor?
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7
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842
Find ratio of brightness & the distance the 6th dark fringe is from central fringe
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5
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704
Coulomb's law to find electric field for charge density function
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11
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1K
Find smallest distance x from y-axis for both constructive & destructive interference to occur
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5
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772
Find smallest value of y for constructive interference
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3
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641
EMF induced in moving rod in B-field, why is "L" length of wire frame?
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4
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795
Why is vertical displacement second order in horizontal displacement for coupled oscillator?
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8
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781
Induced EMF due to a moving magnet
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7
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866
How to Apply Derivatives in Physics Problems?
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1K
How to calculate pressure when two forces are exerted
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23
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1K
Equivalent resistance of this 6-sided circuit
2
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59
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2K
Please help with this suggested solution involving electrostatic press
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14
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1K
Find the change in the time required, if acceleration increases by the differential amount 'da'
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7
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1K
Solving for potential using surface charge density of a sphere
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3
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1K
Tension in a string which connects 3 pulleys
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12
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1K
Particle in one dimension wave function from Quantum Mechanics
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3
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769
Minimal distance between two planes moving perpendicularly
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6
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781
Analyzing acceleration of block on a ramp connected to a pulley
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15
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2K
Friction problem of a block sandwiched between 2 surfaces
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6
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1K
How friction acts on a block moving down a slope moving side to side
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2
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912
How to find the equivalent resistance of this infinite circuit?
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10
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2K
The div in cartesian coordinates
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2
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769
Find the location of the diver's reflection in the convex mirror
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19
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875
Find the electric field between 2 finite discs
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16
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1K
Find the location and length of the final image
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2
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914
Man pulling a boat along the water with a rope (from above on a steep bank)
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31
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2K
Material Selection - Hooke's law [not]
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14
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843
Tension Force Problem (applying Work-Kinetic Energy Theorem)
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16
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1K
Falling mass, additionally accelerated by a rope
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18
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1K
Calculating torque on a pendulum
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2
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829
Electric field lines outside a neutral conducting spherical shell
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12
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2K
How to calculate quality factor for RLC circuit?
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6
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1K
Gauss' law for charge distribution of a point charge at the origin surrounded by an insulating sphere
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1
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636
Mass atop four springs with external input: Reduce vibration amplitude by factor of ten
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3
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895
What mass must be placed on the cord to keep the pulley from rotating?
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1
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935
Ratio of volumes in a vertical cylinder with a piston
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3
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770
Estimating damped harmonic oscillator parameters from this plot of the oscillations
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9
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2K
A rod that falls while rotating from the end of a table
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11
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2K
Question about Projectile Motion: Throwing a Flower Pot from a Balcony
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18
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1K
Doubt regarding View factor/shape factor of infinite inclined plate
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3
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755
The speed of the point of intersection of two uniformly moving lines
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24
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2K
Theoretical velocities at different heights sliding down an inclined plane
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4
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863
How to determine if electrical components are connected in parallel or in series?
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10
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1K
Electric flux through an inclined cylinder
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16
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1K
A charge q approaching two stationary charges q1 and q2
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7
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973
Analyzing this 2-lens optical system
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5
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1K
Charge conservation for 3 parallel charged plates
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19
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1K
Force transmitted to a block in viscous fluid through a spring, cord, and pulley
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6
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850
Two Inverted Pendulums connected by a rope
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10
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557
Gauss' law problem -- Should the field due to both the inside and outside charges be taken into account?
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28
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1K
Help finding the change in potential energy in this problem
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9
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793
Textbook 'The Physics of Waves': Linearity of Forced Oscillator
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6
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874
Induced currents on a pair of separated dipole antennas
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2
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678
Thermodynamic cyclic process - 2 isobaric and 2 adiabatic
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5
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733
Ball launched from a height of 5 meters --- Projectile motion
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12
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1K
Block on top of an inclined plane, with a rough surface, that moves with constant acceleration
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41
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4K
Energy analysis of the system (leaking bucket from Morin's "Mechanics"
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5
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1K
Textbook 'The Physics of Waves': Lifetime of SHM Oscillators
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5
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788
Textbook 'The Physics of Waves': Calculating Work Done by Force
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2
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900
Textbook 'The Physics of Waves': Reason to force us to consider complex solution for harmonic motion?
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3
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935
Is there a limit on how much energy a photon might have in a FOR?
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10
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861
How to parametrize motion of a pendulum in terms of Cartesian coordinates?
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1
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1K
Is the line integral of tangential force in pendulum equal to the negative of change in potential energy?
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3
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904
What is meant by small oscillations for this potential energy function?
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2
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829
Initial velocity of bird landing on horizontal wire modeled as spring
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7
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997
Circular motion of a Weightless rod
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18
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913
Electric field of point along the central vertical axis of a triangle
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3
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886
Proving Newton's 3rd law from conservation of momentum
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2
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748
Finding speed of two billiard balls in elastic collision
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9
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964
Electromagnetism - Infinite plane of charge & Tension
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9
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746
Measurement of the Stefan-Boltzmann constant
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6
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665
Why is the superposition principle valid here?
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5
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816
Morin 3.7 -- Block sliding sideways on an inclined plane
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11
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1K
How Do Mass and Weight Differ?
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29
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1K
Equivalence of Euler-Lagrange equations and Cardinal Equations for a rigid planar system
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4
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1K
Rotating simple harmonic oscillator
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11
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2K
Deriving speed equations | Elastic collision
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1
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752
Force analysis of a spring-bob system
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2
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664
Block on top of moving slab, with a rough surface - When does v_b=v_s?
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27
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1K
Impulse and perfectly inelastic collision between 2 points
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4
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809
Conservation of energy of a bow and arrow
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3
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801
Stretched spring attached to the center of a pure rolling disk
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11
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1K
What is taken as datum level for the following absolute potentials?
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2
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578
Applying Force on a Cylinder at an Angle
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8
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842
Free Body Diagram of Mass-Spring System
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5
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1K
Conservation of Mechanical Energy - Which Equation To Use?
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9
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1K
Closest distance of approach between 2 charged particles
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5
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1K
System of two wheels of different sizes with an axle through their centers
2
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67
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4K
Change in Entropy When Mixing Water at Different Temperatures
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5
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1K
Question About Momentum: Ball Rolling up a Curved Ramp
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12
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2K
Homer Simpson spinning inside an hourglass
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4
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608
Resultant force on a parachutist
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11
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944
A moving boat with a flag on its mast
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15
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1K
Calculating work done by a gas
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2
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782
Length Contraction Problem for a Rod in a Spaceship
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4
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596
Perfectly inelastic collision between Projectile and a hinged disk
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26
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1K

Intro Physics Homework Help

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