Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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What types of energies can be generated from fire
- costa_1205
- · Replies 1 ·
Do electrons in a neutral metal rod experience net force from a charged rod?
- sgstudent
- · Replies 18 ·
Electric potential problem with two plates and different points (i'll elaborate)
- nadeem0322
- · Replies 1 ·
Rocket travels into space, emits sound - intensity/time question
- fuzzy361
- · Replies 2 ·
Downward acceleration in an elevator
- racecar12
- · Replies 9 ·
Distance and speed word problem. Introduction to vectors.
- Nirupt
- · Replies 9 ·
Equation for speed of charges (electrostatics)?
- devil0150
- · Replies 3 ·
Δt=6.7 s, Δx= .25 miles what is speed?
- burton95
- · Replies 6 ·
How Do Charges Affect Electrostatic Force?
- Bashyboy
- · Replies 5 ·
Space Dependence of Electric potential
- PhysicsRob
- · Replies 7 ·
Difference between fluorescent strip and compact fluorescent lamp
- moimoi24
- · Replies 11 ·
Calculating Thermal Expansion in a Steel Cable
- has1993
- · Replies 5 ·
Rearrange 0.05=(2.88/4*1*0.018)(0.05^2-r^2) for r^2
- rad10k
- · Replies 11 ·
Using Projectile motion to find the distance above a wall
- PensNAS
- · Replies 4 ·
Two moving objects; 1D; constant
- burton95
- · Replies 2 ·
Model rocket launched vertically with constant acceleration to 150m
- TheRedDevil18
- · Replies 15 ·
What is the purpose of a voltage divider in electric circuit analysis?
- GreenPrint
- · Replies 5 ·
Why is the girl and the sled accelerating in opposite directions?
- dwdoyle8854
- · Replies 4 ·
Spectral radiant exitance when given temperature
- Landshark
- · Replies 4 ·
How to get max velocity for simple pendulum
- PhizKid
- · Replies 1 ·
Projectile Motion - What angle should the quarterback throw the football?
- ElleElle
- · Replies 4 ·
3D tension problem (static equilibrium)
- silentskills
- · Replies 1 ·
Equivalent Resistance Simulator
- GreenPrint
- · Replies 2 ·
Finding electric field between two charges
- joel amos
- · Replies 3 ·
Position vector R of a particle moving x-y plane
- chris61986
- · Replies 1 ·
Uniform Circular Motion - Finding Fc/Ft without mass
- Elatric
- · Replies 1 ·
Finding angle through cross and dot product
- cxiangzhi
- · Replies 8 ·
Cards hanging off the end of a table problem
- dinospamoni
- · Replies 14 ·
Center of Gravity/ Seesaw problem?
- laneybaney
- · Replies 1 ·
Kinetic and gravitational potential energy and velocity
- pbonnie
- · Replies 6 ·
How much charge is enclosed by the box?
- AxM=Fam
- · Replies 2 ·
Kinetic and gravitational potential energy
- pbonnie
- · Replies 7 ·
Calculating energy needed to melt aluminum cans?
- MarianaMoon
- · Replies 5 ·
What conditions are needed so that a billiard ball slides rather than rotates?
- great_sushi
- · Replies 7 ·
Driving towards a deer; Constant
- burton95
- · Replies 1 ·
How Do You Calculate Current from a Single Oscillating Charge?
- bladesong
- · Replies 10 ·
Find the Foces in A and B and the tension in the wire
- Huumah
- · Replies 1 ·
Calculating Wavelength from Interference Pattern: Narrow Slits and Laser Light
- quicksilver123
- · Replies 6 ·
Find time to reach ball. 1D motion
- baird.lindsay
- · Replies 1 ·
A block on the platform of an acceleratin truck
- lep11
- · Replies 2 ·
Electrical and gravitational forces of protons
- joel amos
- · Replies 7 ·
Projectile at 12 m height with v = 4 m/s at 42°: find position at 9 m
- RjD12
- · Replies 12 ·
Guass Law involving conducting cylinders
- maiad
- · Replies 1 ·
What is the Ideal Current Source and How Does it Affect Circuit Design?
- GreenPrint
- · Replies 15 ·
Parallel plane - electric field and potential
- Deathnote777
- · Replies 3 ·
Shortest possible period of revolution of two identical gravitating solid spheres
- autodidude
- · Replies 13 ·
What is the validity of this electrical circuit?
- GreenPrint
- · Replies 8 ·
Does Object Size Affect Measurement Errors?
- dwdoyle8854
- · Replies 1 ·
Electric Potential of a triangle?
- dolpho
- · Replies 5 ·
Timelike separation: which of these two answers do you prefer?
- daselocution
- · Replies 2 ·
Problem regarding centre of mass and linear momentum.
- sankalpmittal
- · Replies 18 ·
Difference in shape, LxWxH, most similar proportions, regardless of scale
- xinlo
- · Replies 4 ·
What Is the Time Between Beats for This Displacement Function?
- BareFootKing
- · Replies 2 ·
Can You Use a Stone to Retrieve Your Frisbee?
- veg
- · Replies 10 ·
Cracking the Code: Solving Cylindrical Shells with Gauss's Law
- Klymene15
- · Replies 3 ·
In-Depth Pascal's Law Explanation
- Von Neumann
- · Replies 4 ·
Spring launcher equation for x so it hits the target
- firezap
- · Replies 2 ·
Calculating the heat in the circuit when adding resistances
- satycorn
- · Replies 6 ·
Finding V_out in circuit using mesh analysis
- charlies1902
- · Replies 8 ·
Does pendulum bob mass affect damping rate?
- JamieGreggary
- · Replies 3 ·
Finding the Force of Nucleus on a Single Electron of Plutonium
- anomalocaris
- · Replies 7 ·
Electric Field Inside a Conductor Using Gauss's Law
- SamuelLittle
- · Replies 2 ·
Pozitron-Electron interaction(anihilation)
- pop_ianosd
- · Replies 1 ·
Lost physics student problem with vectors
- Wats
- · Replies 10 ·
Determine forces acting on a plank at rest
- zeralda21
- · Replies 5 ·
Spring attached to two hanging objects
- GoGoGadget
- · Replies 7 ·
Integral for displacement from velocity
- burton95
- · Replies 4 ·
Mass of a steel I-beam with different thickness and height
- CollegeStudent
- · Replies 3 ·
Find Frequency and Amplitude from Max Velocity and Accn
- rocapp
- · Replies 10 ·
Finding amplitude of oscillation with only k, x, v, and a
- PhizKid
- · Replies 5 ·
Keplers third law: why kg doesn't cancel in the radius equation
- channel1
- · Replies 3 ·
Difficult vector word problem final step
- personguything
- · Replies 7 ·
Finding forces acting on spring/pulley system
- uglies1992
- · Replies 2 ·
Differential equation for force F(x) and disc with friction and air resistance
- uber_kim
- · Replies 1 ·
Find energy required to keep a rope oscillating
- rocapp
- · Replies 1 ·
Understanding Lightbulbs: Solving the Confusing Voltage Question in Physics
- Jarfi
- · Replies 3 ·
What prevents molecules from being too close to each other?
- sgstudent
- · Replies 21 ·
Calculating tangential velocity of an air parcel circulating a tornado
- Timebomb3750
- · Replies 3 ·
What is a phasor?
- azolotor
- · Replies 3 ·
Voltage distribution measured across graphite-filled square
- GreenPrint
- · Replies 28 ·
Person inside an isolated conductor
- megaspazz
- · Replies 2 ·
Electric Field on Two Connected Spheres
- dfetnum
- · Replies 9 ·
Finding r using point charges and work done by an electric force
- Rae_4
- · Replies 2 ·
The meaning of the delta dirac function
- anban
- · Replies 3 ·
F = MA 2009 # 14 (Momentum Quick Conceptual Question)
- SignaturePF
- · Replies 7 ·
How to Analyze Ball Collision with a Moving Wall When V << v?
- PhizKid
- · Replies 24 ·
F=MA 2009 #23 (Power of a Spring)
- SignaturePF
- · Replies 8 ·
Proton enters magnetic field in spiral trajectory
- songoku
- · Replies 3 ·
Find the angle between the two vectors
- skysunsand
- · Replies 13 ·
Rod supported by hinge and wire: finding hinge force
- StaticWaffles
- · Replies 6 ·
What form should I(t) take in AC circuit problems?
- charlies1902
- · Replies 3 ·
What is the total force exerted by block 2 on block 3 ?
- aruji73
- · Replies 5 ·
How Does Doubling the Mass Affect the Frequency of a Spring System?
- SignaturePF
- · Replies 11 ·
How Does Angular Momentum Vary with Orbital Distance in Physics?
- SignaturePF
- · Replies 3 ·
Work done to move a point charge
- dfetnum
- · Replies 7 ·
2009 F=MA Exam #6 (Conceptual Velocity Question)
- SignaturePF
- · Replies 3 ·
F=MA 2009 Exam # 18 (Pendulum, a small peg, and mass m)
- SignaturePF
- · Replies 6 ·
Moment of inertia of a uniform square about the x-axis
- heycoa
- · Replies 6 ·
2009 F=MA # 24 (A block tipping down an incline)
- SignaturePF
- · Replies 12 ·
Force between Mars and a satellite at 1.6 Mars radii altitude
- aruji73
- · Replies 2 ·