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.
The maximum and minimum transverse speeds of a point at an antinode
  • · Replies 22 ·
Replies
22
Views
42K
Question about a Pair of Forces - Newton's Third Law
  • · Replies 3 ·
Replies
3
Views
2K
Magnetic Field Question. Grade 12 Physics.
  • · Replies 5 ·
Replies
5
Views
2K
Find Maximum Velocity Range in Velocity Selector using Vmax and B values
  • · Replies 1 ·
Replies
1
Views
3K
At what point or points on the x-axis is the electric potential zero?
  • · Replies 4 ·
Replies
4
Views
29K
At which points on the x-axis (not at infinity) is the electric potential zero?
  • · Replies 8 ·
Replies
8
Views
20K
Force of Particle at x=-0.660 m | Alpha = 1.50 J/m^4
  • · Replies 1 ·
Replies
1
Views
4K
Law of Conservation of Momentum
  • · Replies 4 ·
Replies
4
Views
1K
How Do You Calculate the Magnetic Field at a Point Near a Current-Carrying Wire?
  • · Replies 3 ·
Replies
3
Views
2K
Equivalent Impedance: Find Z=84.907-j20.12 ohms
  • · Replies 6 ·
Replies
6
Views
2K
What is the Coefficient of Kinetic Friction on a Horizontal Surface?
  • · Replies 1 ·
Replies
1
Views
11K
Projectile Motion Time Question
  • · Replies 4 ·
Replies
4
Views
2K
Solving a Lengthy Spring Problem: My Attempts
  • · Replies 10 ·
Replies
10
Views
8K
Conceptual/mathematical center of mass question
  • · Replies 1 ·
Replies
1
Views
2K
Putty dropped on a frame suspended from a spring.
  • · Replies 3 ·
Replies
3
Views
8K
Types and structures of capacitors
  • · Replies 1 ·
Replies
1
Views
4K
** Question related to Orbital speed of star, Keep getting *10^4 to high?
  • · Replies 9 ·
Replies
9
Views
4K
What are the normal forces at points A and B in a moment and couple problem?
  • · Replies 8 ·
Replies
8
Views
2K
How Do You Calculate the Angle to Reach a Moving Target in a River?
  • · Replies 4 ·
Replies
4
Views
2K
What is Continuity of Function and How Does it Lead to A+B=C?
  • · Replies 2 ·
Replies
2
Views
2K
Mars balloon , forces, pressure
  • · Replies 7 ·
Replies
7
Views
11K
Help Free fall, looking for time of motion off of a bridge.
  • · Replies 3 ·
Replies
3
Views
2K
Speed of a truck wthout brakes down a hill
  • · Replies 1 ·
Replies
1
Views
2K
Understanding Newton's Third Law: Forces on a Box
  • · Replies 8 ·
Replies
8
Views
3K
How Do You Calculate Angular Momentum for a Rotating Rigid Body?
  • · Replies 3 ·
Replies
3
Views
8K
Magnetic forces (no calculations)
  • · Replies 2 ·
Replies
2
Views
1K
Calculate Metal Density Using Tension in Water - Step by Step Guide
  • · Replies 10 ·
Replies
10
Views
2K
Magnitude of induced voltage in conductor within AC solenoid
  • · Replies 1 ·
Replies
1
Views
3K
The box weighs 400lb and the person can pull with 200 lb of force.
  • · Replies 1 ·
Replies
1
Views
1K
Average Current in Coil Rotated in Magnetic Field
  • · Replies 1 ·
Replies
1
Views
5K
Forces in the triangle and pulley system
  • · Replies 5 ·
Replies
5
Views
10K
Calculating Angle of Incidence for Blue Light Using Refractive Index Data
  • · Replies 10 ·
Replies
10
Views
5K
Calculating the Spring Constant k of a Spring
  • · Replies 19 ·
Replies
19
Views
3K
Why doesn't a spinning top fall over instantly?
  • · Replies 24 ·
Replies
24
Views
17K
Question involving waves and a spring, help please?
  • · Replies 1 ·
Replies
1
Views
5K
Formula for the magnetic field inside a solenoid
  • · Replies 2 ·
Replies
2
Views
4K
Calculating Energy and Power in an Inductive Circuit
  • · Replies 2 ·
Replies
2
Views
4K
Troubleshooting Units in Energy Balance Problem
  • · Replies 1 ·
Replies
1
Views
2K
HELP Physics case study- Bungee jumping
  • · Replies 3 ·
Replies
3
Views
4K
Periodicity properties of complex exponentials in discrete/continuous time
  • · Replies 4 ·
Replies
4
Views
4K
Thermodynamics - partial differential
  • · Replies 6 ·
Replies
6
Views
2K
Why Is the Minimum Speed Where the Seat Exerts No Force?
  • · Replies 7 ·
Replies
7
Views
3K
Calculating the monochromatic flux of a star
  • · Replies 1 ·
Replies
1
Views
5K
Entropy Change in Blackbody Radiation System in Thermal Equilibrium
  • · Replies 1 ·
Replies
1
Views
2K
Actual Scenario Qualitative Wiring Problem
  • · Replies 1 ·
Replies
1
Views
2K
How Does Mass Affect Spring Stretch in Hooke's Law?
  • · Replies 1 ·
Replies
1
Views
3K
Voltages across circuit elements
  • · Replies 5 ·
Replies
5
Views
2K
Amplitude of a wave when changing depth
  • · Replies 3 ·
Replies
3
Views
7K
Thermodynamics: H2 - H1 and U2 - U1
  • · Replies 12 ·
Replies
12
Views
14K
Question on directions of currents and magnetic fields
  • · Replies 5 ·
Replies
5
Views
6K
Calculating m2: Spheres Collision Equation | Homework Help"
  • · Replies 2 ·
Replies
2
Views
2K
Why Am I Wrong in Calculating Forces on a Rotating Rod?
  • · Replies 9 ·
Replies
9
Views
3K
Derivatives of Exponential Cosine Function
  • · Replies 4 ·
Replies
4
Views
2K
Calculating the Number of Collisions Required for Neutron Moderation
  • · Replies 2 ·
Replies
2
Views
2K
Calculate the surface charge distribution on a metal disc
  • · Replies 1 ·
Replies
1
Views
3K
Cofficient of static friction between table and rope
  • · Replies 3 ·
Replies
3
Views
16K
How Does an Air Conditioner Affect Entropy and Heat Transfer?
  • · Replies 3 ·
Replies
3
Views
8K
Solving a Physics Problem: Car Drives Off a Cliff
  • · Replies 3 ·
Replies
3
Views
10K
Electrical oscillations of an RLC circuit
  • · Replies 6 ·
Replies
6
Views
7K
Inductor and Capacitor at different frequencies
  • · Replies 1 ·
Replies
1
Views
2K
Calculating Phase Transitions in a Water-Ice Mixture
  • · Replies 5 ·
Replies
5
Views
3K
How Do We Measure the Size of the Galaxy with Limited Telescope Scans?
  • · Replies 1 ·
Replies
1
Views
4K
Gravitational Potential Energy of a jump
  • · Replies 2 ·
Replies
2
Views
3K
How Do You Calculate the Distance a Block Travels Off a Ramp?
  • · Replies 2 ·
Replies
2
Views
2K
Find the angular frequency of torsional pendulum
  • · Replies 1 ·
Replies
1
Views
6K
What are the Thermodynamic Considerations for an Air Conditioner Cooling a Room?
  • · Replies 1 ·
Replies
1
Views
3K
How did i get this wrong? launching projectile
  • · Replies 1 ·
Replies
1
Views
1K
Work done on an inclined slope?
  • · Replies 1 ·
Replies
1
Views
6K
Electrostatics, electrons, protons, and all that good stuff
  • · Replies 4 ·
Replies
4
Views
5K
Deriving Motion Equation from Newton's Second Law
  • · Replies 1 ·
Replies
1
Views
8K
What are the forces involved in a brake test on dry concrete?
  • · Replies 1 ·
Replies
1
Views
2K
Calculating Acceleration and Tension for a Cart with an Overhanging Weight
  • · Replies 1 ·
Replies
1
Views
1K
Magnetic field of rotating sphere
  • · Replies 5 ·
Replies
5
Views
32K
Solving a Balloon Mass Calculation: Find Minimum Gas Mass Needed
  • · Replies 3 ·
Replies
3
Views
3K
Thermodynamics: Solving for Initial Temperature of Copper in Ethanol Solution
  • · Replies 3 ·
Replies
3
Views
3K
Tricky(?) Centripetal Motion Problem
  • · Replies 19 ·
Replies
19
Views
2K
What is the average angular deceleration of the rear wheel?
  • · Replies 1 ·
Replies
1
Views
2K
Resonance of a Parallel LCR network
  • · Replies 3 ·
Replies
3
Views
3K
Sliding bar constraint equations
  • · Replies 6 ·
Replies
6
Views
4K
A Physics Kinematics Grade 11 question
  • · Replies 7 ·
Replies
7
Views
4K
How much light passes through a window?
  • · Replies 6 ·
Replies
6
Views
3K
Help Solving a Stalled Car Problem
  • · Replies 1 ·
Replies
1
Views
4K
Projectile Motion: Is Final Y Velocity Lower Than Initial? Impact on Time?
  • · Replies 1 ·
Replies
1
Views
4K
Ring moving along frictionless arc
  • · Replies 2 ·
Replies
2
Views
1K
What is the Tension in Each String for a Hanging Ball?
  • · Replies 5 ·
Replies
5
Views
4K
Frictionless Ramp question, should be very simple
  • · Replies 19 ·
Replies
19
Views
2K
How does telephone signal transfer work?
  • · Replies 2 ·
Replies
2
Views
2K
How is τmax/rmax related to the second moment of area?
  • · Replies 1 ·
Replies
1
Views
2K
Help - Electrical Current vs Water temperature
  • · Replies 1 ·
Replies
1
Views
2K
Flow of electricity and resistivity (ohms law)
  • · Replies 4 ·
Replies
4
Views
6K
Flow of electricity: Open versus Closed Circuit
  • · Replies 1 ·
Replies
1
Views
7K
Kirchoff's Laws to find all currents flowing in the cct
  • · Replies 21 ·
Replies
21
Views
4K
Angular Velocity with Bike Tires
  • · Replies 2 ·
Replies
2
Views
7K
Actual vs percieved depth. optics question
  • · Replies 1 ·
Replies
1
Views
2K
A Leaning Plank. Find where it looses contact.
  • · Replies 33 ·
2
Replies
33
Views
7K
Energy resultant of Solidification Point Of Ethanol
  • · Replies 1 ·
Replies
1
Views
3K
Elliptical Orbit Homework: Find Angular Momentum
  • · Replies 3 ·
Replies
3
Views
2K
How Does Capacitance Change with Angle in Non-Parallel Plate Capacitors?
  • · Replies 2 ·
Replies
2
Views
8K
How Do You Calculate the Moment of Inertia for a Cubic Slab?
  • · Replies 4 ·
Replies
4
Views
4K
Resonance of a Parallel LCR network
  • · Replies 1 ·
Replies
1
Views
2K