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.
Spherical pendulum confusion [Issue resolved]
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2
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344
Launch service between two stations along a flowing river
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21
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595
Book plots position & force on the same graph, still gets right answer
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8
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534
Why is source force + electrostatic force = 0 inside battery?
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10
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891
Relativistic motion and length contraction
2
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44
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1K
Circular motion doubt: Angular velocity vector for general planar motion about a point in the plane
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6
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420
Critical frequency of Faraday Waves?
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6
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760
Find starting velocity from golfer launching ball
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7
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505
Why is the electric field inside a conducting hollow/filled sphere zero?
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2
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385
Slope of N - t graph of radioactive decay
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2
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415
Question about Feynman diagram showing annihilation
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4
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459
Coupled oscillator question
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2
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383
Tension in a Two-Crate System on a Frictionless Surface
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7
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417
Forces at play in a pendulum (conceptual doubt)
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7
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428
How do I fix the signs in Faraday's Law in RL Circuit?
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5
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562
Resistivity calculation from two-probe resistance measurement of sheet
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2
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342
Simple pendulum with moving support
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4
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530
Change in the unit vectors
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10
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441
Coupled pendulum-spring system
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3
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441
Field transformations in the z-direction
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7
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1K
Pendulum attached to a rotating vertical disk
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2
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498
The value of the spring constant k that I calculate seems too high
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11
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574
Understanding the math of definition of electromotive force
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1
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584
Length of string in a standing wave
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19
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792
Field due to an electric dipole (Halliday & Resnick, Ch. 27 problem 23)
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3
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304
Understanding a very simply RL circuit
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1
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474
Small oscillations of a simple pendulum placed on a moving block
3
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73
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3K
Lab Exercise: Measuring "g" using Conservation of Energy
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12
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519
Kinematics problem from a competition: Will the 2 sliding boxes collide?
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6
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515
Flashing light beacon from Earth reaching spaceship moving away at 0.75c
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5
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391
Rolling Sphere On Incline
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1
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448
Block sliding on a semicircular track with friction
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10
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731
The maximum reversible work in thermodynamics (2)
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1
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456
Formula derivation connecting vertical water flowrate & horizontal distance moved by a suspended sphere
6
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207
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7K
Impulse and momentum / work-energy
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5
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450
The maximum reversible work in thermodynamics
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22
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862
Do you graph the energy levels of a ##1s^1## atom the same as a ##1s^2## atom?
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12
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479
Magnetic dipole moment and integration surfaces (Introductory Electromagnetics - Magnetistatics)
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4
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504
Charge on a grounded conducting sphere in a uniform electric field, after ungrounding and movement
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1
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773
Conservation of momentum (center of mass) in projectile launches
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15
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764
Range of frequency heard by observer related to Doppler effect
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8
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585
Vertical displacement with time of a projectile
2
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48
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2K
Spring Constant Force Problem Help
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12
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499
Is current flowing into a battery always equal to current flowing out?
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12
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641
Total Internal Reflection and Transmitted Wavelength
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1
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453
Understanding self-inductance in a solenoid.
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3
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697
Condition for resolution of two point sources of light
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2
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467
How do I model this function? (Damped Harmonic Motion)
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19
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611
Emf in coil rotating inside magnetic field
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3
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475
Refraction of light when traveling from air to glass
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6
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619
Finding critical angle: not sure which one is correct
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13
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509
Origin of repulsive force on a magnet approaching conducting ring?
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5
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662
A wheel of radius r rolls along a curve
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13
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747
Electronic Circuits - Calculate voltage
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4
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692
Newton's third law and weight
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13
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587
Query related to Two-Dimensional Motion
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9
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690
Camera drone and speed of air below it
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5
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519
Graph of viscous force and velocity
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15
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660
Projectile motion, initial height and range given, find initial velocity
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8
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1K
Need to derive a formula for the number of red giants
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8
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682
Question about time dilation
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22
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572
Derive trig equations 4, 5, and 6 from 1, 2, and 3
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13
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2K
Friction - same direction as motion?
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10
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779
Center of mass acceleration for an inclined plane and mass m
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18
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699
How Much Vertical Acceleration Does a Jet Need to Avoid a Hill?
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2
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416
How Does Coriolis Force Influence Particle Motion in Rotating Systems?
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3
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649
2 Masses attached by a spring in the vertical axis
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8
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637
Minimum work done to push the cube over
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14
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599
Gauss' Law for a conducting / non-conducting sheet
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5
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696
Is the Charge Conservation Correct in This Meson Decay Feynman Diagram?
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8
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601
Find the value of ##t## when ##P## returns to ##X##- Kinematics
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25
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2K
Find the tension in the rope PQ
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7
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379
How Do You Correctly Cancel Angular Momentum in Physics Problems?
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3
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756
Question about acceleration of free fall
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23
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924
Calculate voltage over capacitor and resistance
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7
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595
Solve the problem involving the velocity - time graph
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3
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495
Find in terms of ##h## when ##P## comes instantaneously to rest
2
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35
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1K
Question about the energy of 2 blocks with a spring between them
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12
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480
How Is Work Calculated on a Conveyor Belt with Friction?
2
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53
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1K
Find the initial velocity ##U##
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3
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523
How Does Energy Transform in a Bungee Jump?
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7
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425
2 Masses and a Wheel (with mass)
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6
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491
Horizontal force by block on a beam
2
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45
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1K
Calculate the frequency of rotation when a coin flies off a turntable
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8
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601
Trouble solving for end state of two control volumes in a rigid tank
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12
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1K
Help again in interpreting a pulley with a spring and a block
2
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52
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2K
Find the value of ##T## and distance of particle in the first ##4## seconds
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2
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605
A small disk and a bigger half disk
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9
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434
Making sense of sequence of ideas in MIT OCW's 8.02 notes on Faraday
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1
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749
Rotating ball and string Rotational Kinetic Energy?
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6
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7K
Why Isn't the Spring Force Sum of Both Ends?
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5
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621
What is the induced magnetic force on this closed current loop?
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12
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949
Calculating the spring force constant K
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14
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933
Determining Inductance L in an LC Circuit
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5
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852
Power, force, velocity and tension...
2
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38
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965
How Do Power, Force, and Velocity Interact?
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14
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402
The ratio between two horizontal speeds in this pendulum arrangement
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1
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331
Inelastic collision of two squares
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14
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413
Two bodies connected with an elastic thread moving with friction
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6
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833
How to obtain correct negative sign in calculation of motional emf?
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2
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523

Intro Physics Homework Help

Introductory Physics Homework Help is a service that assists students in their assignments related to the fundamental principles of physics at the introductory level.

This support involves elucidating key concepts such as mechanics, electromagnetism, thermodynamics, and optics. Tutors or resources providing introductory physics homework help aim to aid students in problem-solving, understanding theoretical foundations, and applying mathematical techniques.

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