Introductory Physics Homework Help Forum

Post thread
Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Calculate the volume integral over a cone of height h and radius r
  • · Replies 28 ·
Replies
28
Views
2K
Electromagnetism Help: Get Unstuck Now!
  • · Replies 5 ·
Replies
5
Views
1K
Location of point mass based on graphs
  • · Replies 3 ·
Replies
3
Views
1K
Correct statement about thermodynamics process
  • · Replies 5 ·
Replies
5
Views
2K
Image distance of a Keplerian telescope
  • · Replies 7 ·
Replies
7
Views
3K
Microwave standing wave calculations (max/min Intensity, Wavelength)
  • · Replies 51 ·
2
Replies
51
Views
5K
Multipath Microwave EM: Max & Min Intensity Regions
  • · Replies 10 ·
Replies
10
Views
2K
What is Velocity.length_squared?
  • · Replies 32 ·
2
Replies
32
Views
2K
How to calculate the wind force acting on a water drop?
  • · Replies 39 ·
2
Replies
39
Views
4K
Calculating Average Acceleration of a Particle Moving in a Circle
  • · Replies 15 ·
Replies
15
Views
2K
How do we obtain an ampere-hour rating given voltage and watt-hour?
  • · Replies 4 ·
Replies
4
Views
2K
Two charged beads with a third bead in equilibrium
  • · Replies 32 ·
2
Replies
32
Views
4K
Water wheel and hydroelectric power question
  • · Replies 12 ·
Replies
12
Views
2K
Confused about direction of electric field
  • · Replies 7 ·
Replies
7
Views
3K
Calculating Tension in a System of Trolleys
  • · Replies 18 ·
Replies
18
Views
2K
Speed of a star in Special Relativity
  • · Replies 6 ·
Replies
6
Views
2K
Application of Newton's second law to a horizontal pulley
  • · Replies 2 ·
Replies
2
Views
1K
Pressure difference between the top and bottom surfaces of this cube
  • · Replies 3 ·
Replies
3
Views
961
Signs of work done and delta K.E.
  • · Replies 2 ·
Replies
2
Views
1K
Velocity vs Speed (What's more relevant here?)
  • · Replies 4 ·
Replies
4
Views
2K
Wind drag problem with a ball hanging on a rope
  • · Replies 6 ·
Replies
6
Views
3K
Physics IA: Distance B/w Pendulum & Alum. Block, Finding Damping Coefficient
  • · Replies 9 ·
Replies
9
Views
2K
[Kinematics] Calculating the maximum height reached by the ball
  • · Replies 4 ·
Replies
4
Views
2K
Solve Disk & Coil Spring Motion: Get Amplitude Help
  • · Replies 7 ·
Replies
7
Views
2K
How much time do I have to catch a coin?
  • · Replies 2 ·
Replies
2
Views
1K
Find Universal Gravitational Constant w/ Torsion Balance Timelapse Recording
  • · Replies 8 ·
Replies
8
Views
2K
Calculate Distance Traveled: Instantaneous vs. Average Velocity
  • · Replies 5 ·
Replies
5
Views
2K
Interference of 2 spherical waves
  • · Replies 1 ·
Replies
1
Views
1K
Find Isobaric Expansion & Pressure-Volume Coefficient for Solid
  • · Replies 4 ·
Replies
4
Views
2K
Finding gauge pressure for gas inside light bulb as it heats up
  • · Replies 6 ·
Replies
6
Views
2K
Combined Rotation and Translation of a Rectangular Plate
  • · Replies 9 ·
Replies
9
Views
2K
Why does ##Sigma T. x=0## hold for tension
  • · Replies 1 ·
Replies
1
Views
1K
Finding acceleration of the pulley block system
  • · Replies 23 ·
Replies
23
Views
3K
How Can I Measure Kinetic Energy in a Non-Inertial Reference Frame?
  • · Replies 4 ·
Replies
4
Views
2K
Conventional current definition and a variation on that definition
  • · Replies 4 ·
Replies
4
Views
1K
Runner Impulse Question: Estimate Power of Runner Leaving Blocks
  • · Replies 14 ·
Replies
14
Views
2K
Coplanar system or Convergant forces?
  • · Replies 13 ·
Replies
13
Views
2K
Determining the interval between two F1 cars
  • · Replies 30 ·
2
Replies
30
Views
3K
How Do You Calculate Capacitance in a DC Circuit with a Fully Charged Capacitor?
  • · Replies 3 ·
Replies
3
Views
2K
Why Won't a Disk Rotate on a Frictionless Bearing?
  • · Replies 5 ·
Replies
5
Views
2K
Simple question regarding weight flow rate and specific gravity
  • · Replies 11 ·
Replies
11
Views
3K
Physical Pendulum - Theoretical equation
  • · Replies 15 ·
Replies
15
Views
6K
Fluid Dynamics - Using the Manometer Equation
  • · Replies 6 ·
Replies
6
Views
3K
Average Speed Question for a Train that Accelerates and then Decelerates
  • · Replies 20 ·
Replies
20
Views
2K
Two masses accelerate towards each other
  • · Replies 2 ·
Replies
2
Views
1K
Find Lowest Speed to Yank Tablecloth - F/dt=0
  • · Replies 12 ·
Replies
12
Views
1K
Net torque on a cylinder by multiple applied forces
  • · Replies 13 ·
Replies
13
Views
2K
IB Extended Essay research project on relativity
  • · Replies 13 ·
Replies
13
Views
3K
Find spring constant k using an electrical circuit
  • · Replies 10 ·
Replies
10
Views
3K
Potential inside a rectangular pipe
  • · Replies 2 ·
Replies
2
Views
2K
Terminal Velocity of a Falling Parachutist
  • · Replies 5 ·
Replies
5
Views
2K
Question about this Radial function Rl(r)
  • · Replies 1 ·
Replies
1
Views
978
Laplace operator in spherical coordinates
  • · Replies 1 ·
Replies
1
Views
1K
Why Define Internal Energy Using Average Mechanical Energy?
  • · Replies 10 ·
Replies
10
Views
2K
How to Simplify the Laplace Equation in Spherical Coordinates?
  • · Replies 2 ·
Replies
2
Views
1K
An electric circuit problem involving 5 current variables
  • · Replies 28 ·
Replies
28
Views
2K
Are suvat equations valid in 2 dimensional motion for constant acceleration?
  • · Replies 5 ·
Replies
5
Views
2K
Fluids: Concept about Fluid Pressure in a relation with Force and Area
  • · Replies 6 ·
Replies
6
Views
3K
Can a harmonic be louder than the fundamental frequency?
  • · Replies 9 ·
Replies
9
Views
8K
Direct proportionality equations
  • · Replies 4 ·
Replies
4
Views
1K
Moving Source, Observer at Rest, derivation for Doppler effect
  • · Replies 2 ·
Replies
2
Views
2K
Deriving density formulae from first principles
  • · Replies 17 ·
Replies
17
Views
2K
Airplane Vector Problem: Drawing the diagram
  • · Replies 10 ·
Replies
10
Views
2K
Find equivalent resistance R in the circuit
  • · Replies 10 ·
Replies
10
Views
2K
Chain rule and division by zero
  • · Replies 12 ·
Replies
12
Views
2K
Find power needed to fly this airplane using momentum considerations
  • · Replies 3 ·
Replies
3
Views
1K
Torque on a pulley (2 masses connected by a string hanging from 2 pulleys)
  • · Replies 17 ·
Replies
17
Views
2K
Loop problem with skier on ramp going into a loop-the-loop
  • · Replies 13 ·
Replies
13
Views
2K
Multiple Tanks Concept: Changing Water Level Difference
  • · Replies 26 ·
Replies
26
Views
2K
Solving Elastic Collision of Two Balls: Theory & Solutions
  • · Replies 15 ·
Replies
15
Views
4K
Find the equivalent resistance between two points in terms of R
  • · Replies 7 ·
Replies
7
Views
1K
Electric heat generation from parallel rods carrying current in an oil bath
  • · Replies 11 ·
Replies
11
Views
2K
Special Relativity: What are the events in the question?
  • · Replies 29 ·
Replies
29
Views
3K
How did the textbook get this answer? (satellite motion question)
  • · Replies 2 ·
Replies
2
Views
1K
Evidence that the Earth rotates in Space
  • · Replies 5 ·
Replies
5
Views
3K
Uncertainty in Newton's law of cooling
  • · Replies 3 ·
Replies
3
Views
1K
Doppler effect derivation for moving observer and stationary source
  • · Replies 7 ·
Replies
7
Views
3K
Optimum Battery (and Wire) to Power 10x Mini 1.5V Bulbs in Parallel?
  • · Replies 6 ·
Replies
6
Views
2K
Question about this unit conversion principle (multiplying by "1")
  • · Replies 16 ·
Replies
16
Views
2K
Does a Bent Wire Affect Induction Calculations?
  • · Replies 7 ·
Replies
7
Views
2K
Mass-energy conservation in nuclear reactions
  • · Replies 3 ·
Replies
3
Views
1K
Electric flux through a hemisphere due to these charge configurations
  • · Replies 51 ·
2
Replies
51
Views
7K
What does this expression involving Partial Derivatives mean?
  • · Replies 5 ·
Replies
5
Views
931
Find unknown wind velocity given airlplane's speed
  • · Replies 3 ·
Replies
3
Views
2K
Calculating torque about a point with given forces
  • · Replies 5 ·
Replies
5
Views
3K
Analyse motion of an oscillator: x(t)=0.2cos(12*pi*t)
  • · Replies 5 ·
Replies
5
Views
2K
I know everything to do on this problem except one thing
  • · Replies 5 ·
Replies
5
Views
1K
Question on Time-Independent Perturbation Theory
  • · Replies 3 ·
Replies
3
Views
2K
Air Density & Bernoulli's Equation: Tolerance Explained
  • · Replies 4 ·
Replies
4
Views
1K
Explanation for Newton II giving negative mass in my Physics lab results please
  • · Replies 44 ·
2
Replies
44
Views
4K
Magnetic field at origin due to infinite wires and semicircular turn
  • · Replies 3 ·
Replies
3
Views
3K
Circular Motion: Tangential and Normal Acceleration
  • · Replies 5 ·
Replies
5
Views
2K
2D kinematics problem -- Skateboard ramp jump calculations
  • · Replies 4 ·
Replies
4
Views
2K
No problem, happy to help! Good luck with your project.
  • · Replies 15 ·
Replies
15
Views
2K
Graphing velocity, acceleration, and position
  • · Replies 6 ·
Replies
6
Views
1K
Center of gravity of this body: y = (x^2)/a (rotated about the x-axis)
  • · Replies 4 ·
Replies
4
Views
1K
What is the velocity vector of (rsin(phi), rcos(phi), 1) ?
  • · Replies 4 ·
Replies
4
Views
1K
Wheelie of a car coming out of a ditch: what is the correct model?
  • · Replies 125 ·
5
Replies
125
Views
8K
Sig Figs: Understand 2 Sig Fig Solutions
  • · Replies 8 ·
Replies
8
Views
1K
Gradient (1/r): Homework Equation Solutions
  • · Replies 8 ·
Replies
8
Views
32K