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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Why is radial acceleration negative in the elliptical orbit equation?
- Contadoren11
- · Replies 6 ·
Block sliding up and down a frictionless wedge that can slide
- REVIANNA
- · Replies 11 ·
How do you calculate a human volume from a given weight?
- 5P@N
- · Replies 6 ·
Ball dropped out a truck window, find bounce height and dist
- jbm1939
- · Replies 4 ·
Calculating the Potential of a Collapsing Droplet: A Scientific Approach
- gracy
- · Replies 23 ·
Conical pendulum on a pole: oscillation and angular frequency
- brinstar
- · Replies 9 ·
Estimating the Age of the Earth Using Uranium Decay
- says
- · Replies 3 ·
Spring force due to Axial and Torque load?
- Mechaman
- · Replies 4 ·
Force applied by cue to pool ball and friction during contact
- Drake M
- · Replies 1 ·
Classical mechanics (find trajectory and kinetic energy)
- NanoMath
- · Replies 1 ·
Trouble finding correct acceleration of a ball
- Drake M
- · Replies 6 ·
Magnitude of the Magnetic Field at point P
- Potatochip911
- · Replies 8 ·
Is my mass calculation method correct?
- 5P@N
- · Replies 2 ·
Friction Force exerted on an object
- RaeZ
- · Replies 6 ·
Current through Earth's center to produce magnetic field
- aldofbg
- · Replies 1 ·
Rotational motion of a door on a moving car
- physicstime
- · Replies 19 ·
I have a couple question I with atomic physics
- demolition35
- · Replies 3 ·
Charge and energy of a conducting sphere
- AsadaShino92
- · Replies 5 ·
Buoyant Force acting on a sphere
- Carrie
- · Replies 7 ·
Finding mass of cargo dropped from hot air balloon
- Mike13
- · Replies 4 ·
Car velocity with initial motion north and constant acceleration south
- baustin
- · Replies 1 ·
Relative motion or Newton first law?
- a lone fishy
- · Replies 11 ·
Express train braking to avoid freight train collision
- a lone fishy
- · Replies 5 ·
Calculating Forces and Moments for Static Equilibrium of a Structure
- Uhmazuba
- · Replies 1 ·
How Does Sliding Affect the Force Exerted by the Road on a Truck?
- leaf
- · Replies 4 ·
Current to keep cylinder from rolling down incline with wire coil in magnetic field
- Potatochip911
- · Replies 5 ·
Momentum in centre of mass reference frame
- REVIANNA
- · Replies 7 ·
Finding time from average speed
- a lone fishy
- · Replies 7 ·
Question based on laws of motion (inclined motion )
- Abhishek_R
- · Replies 1 ·
What is the Magnitude of Acceleration in the n Direction?
- goldfish9776
- · Replies 1 ·
Volume flow rate from pressure difference between tubes
- gotya581
- · Replies 1 ·
Special Relativity -- Elastic Particle Collision Algebra
- aamirza
- · Replies 1 ·
Are the units of volume compatible with the density units?
- CMATT
- · Replies 36 ·
What is the Solution to the Equipotential Surface Problem?
- gracy
- · Replies 32 ·
Does secondary current in a transformer depend on load resistance?
- Aryan Andaleeb
- · Replies 8 ·
What is the wave speed in the bridge?
- CMATT
- · Replies 2 ·
Motion of connected objects involving a pulley problem
- Theodore Hodson
- · Replies 11 ·
What frequency does the blood receive? What frequency return
- CMATT
- · Replies 1 ·
How to find the x coordinates of the centre of mass?
- Monkey D. Luffy
- · Replies 22 ·
Direction of polarization for monochromatic wave?
- magnesium12
- · Replies 3 ·
Adiabatic Expansion of a Gas: Final Pressure-Volume Product Calculation
- vetgirl1990
- · Replies 1 ·
Magnetic field at the centre of current carrying spiral
- Titan97
- · Replies 5 ·
Distance from one period to the next, ##e## in helical path.
- Potatochip911
- · Replies 1 ·
Moment of inertia for composite objects
- vetgirl1990
- · Replies 2 ·
How high will a helium balloon rise?
- vetgirl1990
- · Replies 10 ·
Rutherford Scattering Trajectory
- says
- · Replies 2 ·
How long after the decay do ##e^{-}## and ##e^{+}## Collide
- Potatochip911
- · Replies 2 ·
Kinetic energy lost during a collision?
- nips
- · Replies 3 ·
Should MA be included in calculating moment about A?
- goldfish9776
- · Replies 9 ·
Finding final velocity of 5 kg object after 30 N·s impulse
- baileydancer98
- · Replies 2 ·
Sphere Rolling Down Hill into Projectile Motion
- Ichigo449
- · Replies 3 ·
Kinetic energy ignoring friction
- David Earnsure
- · Replies 4 ·
Finding friction force on a 10 kg object sliding down a 15° incline
- Heatherfeather4
- · Replies 7 ·
Box Pulled on Rough Horizontal Surface - Frictional Force
- physicsday
- · Replies 7 ·
Springs and potential/kinetic energy
- Carrie
- · Replies 10 ·
Is There a Reaction at C in this Moment Equation?
- goldfish9776
- · Replies 15 ·
Why Does Increasing Velocity Decrease Pressure in Fluid Dynamics?
- Wombat11
- · Replies 3 ·
Solve Work/Energy Problem: 5.9E4 s Answer
- jtb93
- · Replies 1 ·
Electromagnetic Waves in Spherical Coordinates
- BOAS
- · Replies 1 ·
Statics Questions - Equilibrium in a pulley system
- Wilson123
- · Replies 3 ·
Find work done by force given distances and times
- dsb1713
- · Replies 9 ·
Is the Power Expended by a Fan Cart Constant?
- IMAGINETHINGS
- · Replies 4 ·
Finding planet radius from transit depth
- ezach1
- · Replies 17 ·
How Is Energy Dissipated in a Capacitor and Resistor Circuit?
- Hashiramasenju
- · Replies 7 ·
Two Blocks & Spring: Max Extension 30 cm
- takando12
- · Replies 20 ·
Why are statements 1, 3 and 4 incorrect for a ball in a rotating groove?
- vaibhav garg
- · Replies 12 ·
Entropy change mixing oil and water question
- rockinrack
- · Replies 7 ·
How Long to Fill Tank with 3 Pumps?
- gloppypop
- · Replies 2 ·
Why are the accelerations of the bowling ball and football not equal?
- polekitten
- · Replies 2 ·
What is the spring constant for the bungee cord used in the given scenario?
- Bryson Stevens
- · Replies 4 ·
Average back emf induced in coil
- lloyd21
- · Replies 5 ·
Electric potential from two concentric conducting spheres
- Potatochip911
- · Replies 1 ·
Image distance after passing through lens and mirror
- Dhananjay97
- · Replies 5 ·
Group and phase velocity of a wave
- Sharlom
- · Replies 2 ·
Infinite Acceleration on a mass-less string
- Samit Chak
- · Replies 5 ·
Minimum work to transport electron?
- qlzlahs
- · Replies 8 ·
Introductory Physics question in Forces and Works chap.
- KT KIM
- · Replies 2 ·
Work and energy in squatting problem
- Physicsis
- · Replies 17 ·
What is the Tension and Acceleration in Newton's Law of a Sled Problem?
- mace42
- · Replies 3 ·
Calculating acceleration offset by C.G.
- The Don
- · Replies 2 ·
Gate supported by two rings on a rod with friction
- dlacombe13
- · Replies 23 ·
Is photon gravity lensing affected by frequency (energy)?
- Benwade
- · Replies 2 ·
Work done by constant force on 7.6 kg body in 0.5 s
- milla7
- · Replies 4 ·
Internal Energy of 1 mole of Ideal Gas
- Symara Cyr
- · Replies 6 ·
How to Calculate the Current Flowing Through a Gold Wire?
- david12445
- · Replies 8 ·
Physics Lab Permability of free space
- lloyd21
- · Replies 7 ·
Calculation of Tensions on Strings that suspends an object
- Samit Chak
- · Replies 11 ·
Moment of inertia for two point masses at given coordinates
- vetgirl1990
- · Replies 5 ·
Entropy change of calorimetric process
- vetgirl1990
- · Replies 4 ·
Conical Pendulum with lift and tension
- physicszilla
- · Replies 8 ·
Work done by force when position is given by t = √x + 2
- Bhumanyu Arun
- · Replies 6 ·
Minimum Angle for Increasing Distance of Projectile?
- Hashiramasenju
- · Replies 7 ·
Cheese wheel rolling off hemispherical dome
- Ichigo449
- · Replies 24 ·
Motion of a point mass (circular motion)
- Carson Birth
- · Replies 5 ·
Finding angular velocity -- circular motion
- Kevin Lester
- · Replies 1 ·
Problem in orienting two plates as instructed in question
- gracy
- · Replies 41 ·
Finding pressure on a dielectric between a capacitor
- Titan97
- · Replies 1 ·
How Do Launch Angles Affect Projectile Energies and Impact Forces?
- TheRandomCrab
- · Replies 27 ·
How Do You Calculate Max and Min Transverse Speeds in a Wave on a String?
- sadieboo24
- · Replies 1 ·
Finding Escape Speed for an Electron that's Initially at Res
- Potatochip911
- · Replies 9 ·