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.
Question on Thermal Physics. [it feels impossibly difficult to me]
  • · Replies 11 ·
Replies
11
Views
5K
Calculating Repulsive Force between Two Charges at Different Distances
  • · Replies 13 ·
Replies
13
Views
3K
How to determine phase constant?
  • · Replies 7 ·
Replies
7
Views
7K
Finding Spring with kinetic friction involved
  • · Replies 1 ·
Replies
1
Views
2K
When do I need to square values in hydraulic equations?
  • · Replies 11 ·
Replies
11
Views
3K
What Is the Coefficient of Static Friction for an Aston Martin V8 Vantage?
  • · Replies 23 ·
Replies
23
Views
7K
The weight of an astronaut during take off?
  • · Replies 16 ·
Replies
16
Views
8K
Light Reflection: Path Length Difference?
  • · Replies 3 ·
Replies
3
Views
4K
Rings of Electric Field and Gauss's Law
  • · Replies 19 ·
Replies
19
Views
6K
Boost Your Performance: Energy & Velocity Tips for Optimal Results
  • · Replies 8 ·
Replies
8
Views
2K
How Were the Atomic Weights Calculated in Question 50?
  • · Replies 5 ·
Replies
5
Views
2K
Backwards Design for Roller Coaster: Projectile Motion
  • · Replies 3 ·
Replies
3
Views
3K
Relativity: Rocket shoots a bullet straight down
  • · Replies 2 ·
Replies
2
Views
3K
Force of Repulsion between two people with 1% more electrons than protons
  • · Replies 4 ·
Replies
4
Views
13K
Velocity, Force of Friction, and Total Energy in a System Question
  • · Replies 1 ·
Replies
1
Views
2K
A ball rolls in a bowl find the disantce it goes up to.
  • · Replies 1 ·
Replies
1
Views
2K
Solve the Work-Energy Problem: Is There a Mistake?
  • · Replies 1 ·
Replies
1
Views
2K
Can anyone help me slove this question?
  • · Replies 1 ·
Replies
1
Views
2K
Oscillating velocities, and energy
  • · Replies 1 ·
Replies
1
Views
2K
What is the speed of the spaceship as measured by Joe?
  • · Replies 3 ·
Replies
3
Views
2K
Light attracted to earths gravity
  • · Replies 1 ·
Replies
1
Views
2K
Thermal Properties - Specific heat.
  • · Replies 1 ·
Replies
1
Views
3K
Electric Potential of a Cylinder using Poisson's Equation
  • · Replies 4 ·
Replies
4
Views
6K
Working out experimental periodic time from a wieghted spring in s.h.m
  • · Replies 10 ·
Replies
10
Views
3K
Calculating Courses for Motorboat Travel with Constant Current
  • · Replies 2 ·
Replies
2
Views
2K
Determining Direction of Force: FAQ
  • · Replies 1 ·
Replies
1
Views
2K
Series Circuit: How Do Components Balance Power?
  • · Replies 2 ·
Replies
2
Views
2K
Finding B field within solenoid.
  • · Replies 1 ·
Replies
1
Views
2K
Relationship between potential and induced emf?
  • · Replies 3 ·
Replies
3
Views
5K
Closing a door by throwing something at it
  • · Replies 4 ·
Replies
4
Views
12K
Thermal expansion of brass and iron rings
  • · Replies 2 ·
Replies
2
Views
4K
Rlc circuit with ac current source
  • · Replies 4 ·
Replies
4
Views
3K
What Factors Influence Simple Harmonic Motion in a U-Tube?
  • · Replies 2 ·
Replies
2
Views
2K
Projectile motion - ball in circular motion
  • · Replies 4 ·
Replies
4
Views
3K
What is the larmor radius of an electron in the inner van allen belt?
  • · Replies 1 ·
Replies
1
Views
5K
Appropriate arrangement of light meter circuit with LDR and resistor question:
  • · Replies 3 ·
Replies
3
Views
3K
Hey I was wondering why I got this problem wrong on magnetic fields
  • · Replies 4 ·
Replies
4
Views
11K
Resistors in Series with a lightbulb
  • · Replies 4 ·
Replies
4
Views
3K
What is the relationship between spring stiffness and length?
  • · Replies 7 ·
Replies
7
Views
4K
Parallel Plate Capacitor Conundrum
  • · Replies 5 ·
Replies
5
Views
5K
Finding the gravitational field of a rod
  • · Replies 6 ·
Replies
6
Views
8K
How Can DeMorgan's Law Be Applied to Implement (A+B).(A+C) Using NAND Gates?
  • · Replies 3 ·
Replies
3
Views
3K
Magnification of 1/4: Invert and Enlarge Image? True or False
  • · Replies 1 ·
Replies
1
Views
1K
What is the Biot-Savart Law and How is it Used to Calculate Magnetic Fields?
  • · Replies 2 ·
Replies
2
Views
2K
Solving Otto Cycle Problem: Find p2, p3, p4, T2, T3, T4, V2, V3, V4
  • · Replies 1 ·
Replies
1
Views
4K
Find the direction of the missing vector?
  • · Replies 1 ·
Replies
1
Views
2K
The Slope of a Normal Force vs Applied Force Graph
  • · Replies 5 ·
Replies
5
Views
31K
Can you not separate a scalar into x and y components?
  • · Replies 9 ·
Replies
9
Views
3K
Collision of Two Carts with Springs Attached
  • · Replies 2 ·
Replies
2
Views
5K
Projectile Motion with displacement and time
  • · Replies 7 ·
Replies
7
Views
2K
What is the direction of the induced current in the loop for each situation?
  • · Replies 1 ·
Replies
1
Views
3K
Amplitude of horizontal mass-spring system
  • · Replies 1 ·
Replies
1
Views
10K
Two questions from physics 11 that my teacher cannot figure out. HELP
  • · Replies 15 ·
Replies
15
Views
11K
Find the EMF in the loop as a function of time.
  • · Replies 1 ·
Replies
1
Views
4K
Capacitors & Electric Fields and how they change relative to each other
  • · Replies 4 ·
Replies
4
Views
2K
Increasing Damping Ratio: Does it Make a Circuit More/Less Damped?
  • · Replies 2 ·
Replies
2
Views
2K
What is the frequency of the source in the given RLC circuit?
  • · Replies 8 ·
Replies
8
Views
3K
Spectrum & energy level of neutral hydrogen
  • · Replies 1 ·
Replies
1
Views
3K
Infinite number of polarisers (Malus's law)
  • · Replies 1 ·
Replies
1
Views
5K
Air Trapped in Capillary Tubes: Understanding Pressure and Volume Changes
  • · Replies 13 ·
Replies
13
Views
17K
A conceptual question about the force of light waves when reflected
  • · Replies 2 ·
Replies
2
Views
2K
What speed will the ball hit the ground?
  • · Replies 2 ·
Replies
2
Views
5K
Ramp, block, and elastic potential energy
  • · Replies 4 ·
Replies
4
Views
4K
How Does a Capacitor Affect the Voltage Output of a Power Source?
  • · Replies 18 ·
Replies
18
Views
3K
What is the width? Please take a look at my work
  • · Replies 5 ·
Replies
5
Views
3K
Angular acceleration and angular velocity
  • · Replies 4 ·
Replies
4
Views
34K
Elementary kinetics problem - Using calculus is different result from algebra
  • · Replies 13 ·
Replies
13
Views
3K
Is Negative Work Possible with a String?
  • · Replies 5 ·
Replies
5
Views
2K
Finding the electric field vector along the bisector
  • · Replies 5 ·
Replies
5
Views
4K
Electrostatics, conductor infinite sheets
  • · Replies 28 ·
Replies
28
Views
4K
Static equilibrium mass and plank problem
  • · Replies 4 ·
Replies
4
Views
4K
Gravitational Potential Energy and Work Energy Theorem
  • · Replies 3 ·
Replies
3
Views
10K
Potential energy of a system (gravity)
  • · Replies 2 ·
Replies
2
Views
2K
Equilibrium of bicycle going in a circle
  • · Replies 7 ·
Replies
7
Views
3K
Forces of static friction question
  • · Replies 22 ·
Replies
22
Views
7K
What is the Lowest Angle of θ1 for Total Internal Reflection?
  • · Replies 3 ·
Replies
3
Views
3K
Ratio of distance before bar slides
  • · Replies 7 ·
Replies
7
Views
3K
Which Beaker Has a Higher Temperature After Heating by 15°F and 15°K?
  • · Replies 3 ·
Replies
3
Views
4K
Reaaranging a Bernoulli Equation.
  • · Replies 1 ·
Replies
1
Views
2K
Gauss' law when charge terminates
  • · Replies 18 ·
Replies
18
Views
3K
Direction of a positive charge's velocity in an electric field.
  • · Replies 7 ·
Replies
7
Views
2K
How Do You Calculate Average Velocity with Acceleration and Initial Speed?
  • · Replies 2 ·
Replies
2
Views
3K
Buoyant force of an aluminum block
  • · Replies 3 ·
Replies
3
Views
8K
Tangential and radial acceleration
  • · Replies 2 ·
Replies
2
Views
2K
Finding the kinetic energy of an electron
  • · Replies 1 ·
Replies
1
Views
2K
What Force Does a Charged Particle Experience in a Magnetic Field?
  • · Replies 5 ·
Replies
5
Views
5K
How Does Refraction Affect Laser Beam Diameter?
  • · Replies 3 ·
Replies
3
Views
5K
Change in entropy as gas expands?
  • · Replies 5 ·
Replies
5
Views
3K
Question about calculating electric field made by finite point charges
  • · Replies 2 ·
Replies
2
Views
2K
Finding the time it takes for light to pass an object
  • · Replies 3 ·
Replies
3
Views
7K
Collision Avoidance: Δv to Avoid Collision by x
  • · Replies 12 ·
Replies
12
Views
4K
Orbits and Kepler's Laws Question
  • · Replies 4 ·
Replies
4
Views
7K
Determining velocity of objects after collision
  • · Replies 1 ·
Replies
1
Views
7K
Period for SHM of a block on a spring shot by a bullet
  • · Replies 4 ·
Replies
4
Views
9K
How Does Gauss' Law Apply to Electric Fields in a Hollow Sphere?
  • · Replies 4 ·
Replies
4
Views
33K
Work and frequency caused by mutual potential energy
  • · Replies 4 ·
Replies
4
Views
3K
How Far Does a Block Slide Up a Ramp Before Stopping?
  • · Replies 3 ·
Replies
3
Views
5K
Torricelli Barometer and atmospheric pressure
  • · Replies 1 ·
Replies
1
Views
2K
Calculating Momentum & Velocity After Football Collision
  • · Replies 16 ·
Replies
16
Views
3K
Length contraction - problems with transformation and time
  • · Replies 3 ·
Replies
3
Views
3K