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.
Determining the Change in Bulb Brightness by Changing Circuit
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What does the middle of a chain on a pulley mean?
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9
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803
Constant acceleration problem: Dog chasing a surprised cat
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13
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926
Two bars connected by a spring on a floor with friction
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37
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1K
The derivative of the dot product "distributes" over each vector
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706
Calculating the sum of displacement vectors
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764
A problem about the laws of conservation: Bullet colliding with a wood block
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28
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Force on a point charge near a uniformly charged rod
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3
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983
Two rods with fixed angle, find the velocity of the crossing point
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1
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633
Stumped on mathematical proof
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13
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637
A 50 cubic foot tank contains saturated 134a at 100F and a quality of 50%
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11
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946
How can "work" done by a force be negative?
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19
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1K
Torque that a grounded infinite sheet exerts on a dipole
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11
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1K
Two tanks are connected by a valve and line
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4
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846
Spring launcher firing steel balls
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2
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642
Circular motion question: Mass on a rod rotating in a vertical circle
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4
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913
Calculating Motor Force & Torque
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9
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843
Bead on a rod which is being pulled by an ideal string with velocity v
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27
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1K
Appliance plug connected wrongly: live neutral earth
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13
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698
Finding the direction of forces
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5
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663
Finding parallel or in-series resistors
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3
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715
Help needed on mass-energy equivalence
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7
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779
Momentum: instantaneous or average?
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9
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1K
Derivation process of Selection Rule of hydrogenic atom
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1
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522
A question about the perpendicular vector
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2
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532
Trouble understanding frames in relativity
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4
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831
Why does the PE of particles during steam condensation decrease?
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14
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982
Torque on a sign hung by a hinge
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3
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628
Acceleration of a ball at its max height after being thrown upwards
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11
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732
Oscillation of fluids in a U tube
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17
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1K
A microwave oven of mass 13.0kg is pushed a distance 8.80m up a ramp
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2
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656
Free-body diagram: Spring-loaded cylinder sliding on a metal rod
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34
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1K
A 2.8-kg block slides over the smooth icy hill -- Find the minimum speed to clear the pit
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1
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755
A household fridge removes heat, determine power the fridge draws
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8
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978
Find h in the problem involving a stone thrown upwards
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5
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580
Voltage-resistance graph for this circuit with a variable resistance
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4
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679
Work done by a balloon that is rising
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8
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779
Coefficient of friction of a sandwiched body
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15
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859
Kinematics, is this a poorly worded question?
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7
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843
Efficiency of Stirling Cycle - Is it the same as the Carnot Engine?
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14
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1K
Circular motion and moment of inertia - circle loop
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29
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1K
Pressure question: Weight of a car calculated from tyre contact patch area
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3
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904
Ionic thruster high school science project
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2
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707
Rolling without Slipping Demo
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8
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971
RCL series circuit analysis: Damping Constant
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1
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678
Electric field of a charged disc with a small circle cut out of it
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9
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760
Block tied to a fixed string on an accelerating wedge
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37
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2K
Use of imaginary charge vs Gauss' law
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12
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960
Relation between the velocity vector and the acceleration vector of an object
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1
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699
Issue deriving the third law of thermodynamics
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11
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1K
First Law of Thermo: Audience body heat warming a concert hall
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25
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1K
Rotational Dynamics problem with instantaneous frame of reference
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6
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722
Distribution of Energy when work is done on a system of 2 masses connected by a spring
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17
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2K
What Does -∂V/∂x Represent in Newton's Law?
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2
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2K
How to approach this question using SUVAT equations?
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8
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750
Confused about kinematic equations
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20
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2K
What is the relationship between tire size and pressure changes?
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13
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987
Moment of Inertia of Solid Sphere - Proof
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3
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5K
Reading of Ammeter for this circuit with Voltage Controlled Resistors
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9
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1K
Relation between Friction, Velocity, and Acceleration
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16
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995
Is this statement acceptable? (time derivative of a rotating vector)
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4
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687
Entropy Change For Van Der Waals Gas
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5
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600
Maximum Power dissipated at load resistor
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3
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956
Poiseuille law and friction force help
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5
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598
Reversible, adiabatic expansion - Entropy Change
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5
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717
Linear momentum but quadratic kinetic energy?
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4
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518
Are there two downward forces acting on the pivot of the rotating rod?
2
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67
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3K
Thermodynamics: Violating Clausius => Violating Kelvin
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10
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757
The motion of a skateboarder along and above a ramp
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2
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601
Deriving the particle's motion using numerical integration
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5
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702
Circular motion, coin on a rotating disk
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2
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780
Angular velocity- A toy train rolls around a horizontal track
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8
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772
Energy stored in the steady state circuit
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7
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709
Solving Kinematics Problem: V_o & Max Height
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7
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2K
Additivity of thermodynamic potentials?
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1
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489
Two Forces Acting Simultaneously
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6
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764
Electric field of a finite linear distribution of charge
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18
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1K
Conversion factor when converting from SI to natural units
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850
How do I calculate forces in a truss cross section?
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2
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622
Clausius' Theorem and Entropy
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792
Circular argument? Justification of equipotential points
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16
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843
Is My Calculation of Work Along a Defined Curve Correct?
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4
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689
Thermodynamics of a Heat Engine - (First/Second Law)
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2
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596
Finding the distance of a peg so that a pendulum can circle around it
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2
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945
Energy of springs connected in series and parallel
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13
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986
The specific work done on an ideal gas during an adiabatic process in a piston-cylinder system
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13
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965
Relative electrical energy consumption for different light bulb color temperatures
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3
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636
Frequency of Reflected light in special relativity
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1
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531
Confusion about work done by a gas - Thermodynamics
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15
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1K
Thermal exchange between warm object and ideal gas
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2
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797
Thermodynamics: Two gases in a container
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1
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614
Show that the radius of the exoplanet is about 1/2 of Earth’s radius
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2
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799
Total Energy vs Average Energy (Thermo)
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11
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891
Electric flux from line charge through plane strip
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7
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6K
Investigation into electric guitar pickups
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4
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3K
Electric field created by point charges
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6
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820
Confusion about applying Faraday's law to a circuit
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3
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891
What's the energy stored in a parallel plate capacitor?
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14
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1K
Mass Pulley and torque -- Confusion in this Atwood machine problem
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11
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980
Derive Gravitational Force and Field between two identical rods
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1
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450

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.

By offering explanations, examples, and guidance on physics problems, this service helps students grasp the basic principles of the subject, fostering a solid foundation for more advanced physics studies.

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