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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Confusion about type and quantity of force being exerted
- Chozen Juan
- · Replies 2 ·
Energy and momentum conservation
- REVIANNA
- · Replies 13 ·
Justification for spring in series/parallel
- RubinLicht
- · Replies 1 ·
How does graded-index material reduce pulse spreading in optical fibres?
- Barclay
- · Replies 5 ·
Why did Maria's bottle crumple in the cold?
- Drizzy
- · Replies 15 ·
Is it more energy efficient to evaporate water or boil it?
- Drizzy
- · Replies 4 ·
Ionisation energies of paired vs unpaired electrons.
- Robsta
- · Replies 1 ·
Archimedes principle boat displacement
- Drizzy
- · Replies 10 ·
A particle on the edge of an inclined spinning disc
- jack476
- · Replies 2 ·
Min. and max. mass to keep pulley system stationary
- Alexstrasza
- · Replies 5 ·
Pendulum Question Homework: Resolving Tension Components
- Aninda
- · Replies 3 ·
Correct use of words to describe a polarized lens. Grammar
- Barclay
- · Replies 2 ·
Simple Harmonic Motion Average Velocity
- tridianprime
- · Replies 10 ·
Determine the velocity after collision
- goldfish9776
- · Replies 7 ·
Gravity, acceleration and velocity question
- sona
- · Replies 9 ·
Frequency of a bead on a parabolic wire
- azarue
- · Replies 3 ·
Work done negative and positive
- MBBphys
- · Replies 3 ·
Why can’t transverse waves travel through a gas or liquid?
- Barclay
- · Replies 13 ·
Calculating efficiency of 1.9 kW induction cooktop heating 1 litre of water
- Stavrosnt
- · Replies 12 ·
Calculating Tension and Reaction Forces in a Ball and Socket Joint
- goldfish9776
- · Replies 11 ·
Determine the perpendicular distance for couple
- goldfish9776
- · Replies 15 ·
What is the change in potential energy of two blocks in a physics problem?
- Physicscookie
- · Replies 12 ·
Work and Heat Transfer in a Magnetic Field: Conduction Rod on Conducting Rails
- Titan97
- · Replies 5 ·
Resultant Moment of Force Around Point O: 20 Nm Clockwise
- Saanchi
- · Replies 2 ·
Why Can't I Use Standard Cosine Calculations for Non-Orthogonal Axes Forces?
- goldfish9776
- · Replies 5 ·
A question on thermal stress and axial force in a structure
- manutd@13
- · Replies 9 ·
Universal Gravitation problem - Satellite Orbit
- Thewindyfan
- · Replies 4 ·
Water waves travelling from deep to shallow water
- Barclay
- · Replies 4 ·
Why can one person win a finger-pulling game if Newton's third law makes forces equal?
- Drizzy
- · Replies 19 ·
Solving Gas Chamber Problem: Pressure Equality in 3 Compartments
- Dr.azwar
- · Replies 3 ·
Free body diagram with friction
- Radic S
- · Replies 8 ·
Can Individual Zero Angular Momenta Result in Nonzero System Angular Momentum?
- jcruise322
- · Replies 7 ·
Electric Field and Potential due to Induced Charges
- gracy
- · Replies 3 ·
Maxwell's theory and electrons in orbits
- erisedk
- · Replies 2 ·
Cathode Ray Tube and magnetic field Question
- Andrew Wang
- · Replies 1 ·
Calculating Distance Traveled During Acceleration
- Anon1456
- · Replies 2 ·
Why does volume change if pressure varies linearly with temperature?
- Hlud
- · Replies 7 ·
Energy dissipated by a loop of muscle in an MRI machine
- kostoglotov
- · Replies 2 ·
The magnitude of the force of friction
- Anon1456
- · Replies 4 ·
Rolling coin on larger coin: when does contact break?
- dwinsemius
- · Replies 4 ·
Magnetic train forces and how they affect velocity
- mathewmical
- · Replies 32 ·
KCL to Find Voltage Between a and b
- Gbox
- · Replies 3 ·
Will the Block Slide on an Accelerating Inclined Plane?
- Biker
- · Replies 4 ·
Trying to come up with possible topic for physics experiment
- cmkluza
- · Replies 3 ·
When the speed of light is slower than it should be.
- Aizenta Tyriel
- · Replies 9 ·
Can potential energy be greater than total energy?
- thomasb1215
- · Replies 5 ·
Calculating Electric and Magnetic Fields from Radiation Emitted by a 100 W Bulb
- erisedk
- · Replies 3 ·
Electrostatics || A cone charged unifomly, find intensity
- Ciumko
- · Replies 3 ·
Askew Pitot tube, airplane velocity measurement
- distalphalanx
- · Replies 1 ·
How Does Friction Change with Applied Force?
- Drizzy
- · Replies 9 ·
Slower magnet spin produces higher induced voltage in coil
- Fielding
- · Replies 3 ·
Problem sources for inertial forces and rotating reference frames
- trooch
- · Replies 1 ·
A basketball is thrown straight down and bounces back up
- BensonCa
- · Replies 17 ·
How much kinetic energy to propel an object
- 5P@N
- · Replies 1 ·
Finding volume of a submerged object
- quaticle
- · Replies 8 ·
Different methods of finding the weight-work in a pendulum
- NooDota
- · Replies 3 ·
The # of bright fringes in a double slit with finite width?
- Plana
- · Replies 3 ·
Where brick hits ground after sliding off a roof w/ friction
- isabelrose
- · Replies 3 ·
Calculating gravitational pull on surface for large object
- 5P@N
- · Replies 1 ·
Force applied by a constant stream of particles
- LaszloNagy
- · Replies 1 ·
Moment of a Force: How to Find an Unknown Force on a Pivoted Metre Stick
- Rumplestiltskin
- · Replies 3 ·
How large is the resultant force on Gavin's toy car after he kicks it?
- Drizzy
- · Replies 2 ·
What is the force required to hold a pizza peel level with a pizza on it?
- BensonCa
- · Replies 3 ·
Convex Lens Problem: Find Focal Length
- Siddharth Venu
- · Replies 1 ·
Throw a ball, initial velocity?
- Drizzy
- · Replies 11 ·
Help with contour plots of effective potential in R3BP.
- Hjortlund
- · Replies 1 ·
Calculate T for Maximum Altitude: 1D Kinematics Problem Solution
- David112234
- · Replies 5 ·
Graphical Derivation of x = Asin(ωt)
- Izero
- · Replies 7 ·
How high is the snow pile if a kid jumps off it and lands on the ground?
- Drizzy
- · Replies 2 ·
Different diameter rotational inertia
- David Earnsure
- · Replies 7 ·
Derivation of moment of inertia of a solid sphere
- joe5185
- · Replies 4 ·
How to convert arcsec to steradians
- Teenion
- · Replies 3 ·
Did the Pressure of a Monatomic Gas Change During Isentropic Heating?
- kolua
- · Replies 3 ·
3 pulleys - 2 masses on incline plane
- Saints-94
- · Replies 35 ·
Time taken for amount of a nuclear material to remain
- InsaneScientist
- · Replies 5 ·
Can with water rotates -- the water forms a paraboloid
- Karol
- · Replies 23 ·
Fluid - Work done to blow a soap bubble
- huyhohoang
- · Replies 1 ·
Direction of the components of a vector using trigonometry
- dlacombe13
- · Replies 6 ·
Stopping distance, Book is wrong?
- Oz123
- · Replies 4 ·
Distance of geosynchronous satellite from earth
- hangontoyourego
- · Replies 4 ·
Does a ball rolling up a ramp gain both kinetic and potential energy?
- soccer5454
- · Replies 9 ·
Acceleration of elevator and force in cable
- Wilson123
- · Replies 19 ·
Does a car's momentum change affect Earth's momentum equally?
- Tim Wu
- · Replies 3 ·
Classical mechanics:effective spring const
- REVIANNA
- · Replies 9 ·
Mass on elastic rope collides with ceiling, finding extension after collision
- Foemph
- · Replies 6 ·
Acceleration of object climbing a 60-degree incline with friction
- Genti
- · Replies 7 ·
Pellet fired through one foam block, embeds in second block
- thehitchcocks
- · Replies 5 ·
Signal to noise ratio and uncertainty in magnitude
- CGM
- · Replies 2 ·
Electric field of dipole moment
- Incand
- · Replies 6 ·
Final Temperature and Time to Reach it When Adding Ice to Rum and Coke
- Kbenjamin827
- · Replies 12 ·
Power generated by radioactive decay
- leehufford
- · Replies 6 ·
Correlation between orbit eccentricity and mechanical energy
- Contadoren11
- · Replies 5 ·
How does the mass of a ball affect the % of energy loss
- Drake M
- · Replies 5 ·
30 kg boy in a 1000 kg elevator moving up 5 m/s
- Nick63
- · Replies 15 ·
Magnitude of magnetic field at distance from central axis
- qlzlahs
- · Replies 2 ·
Electric Field Symmetry in a Circular Charge Distribution
- Martin V.
- · Replies 3 ·
Induced Current in Square Loop
- qlzlahs
- · Replies 3 ·
2000 kg boat, motor force of 6000 N, resistance 2000 N
- Nick63
- · Replies 8 ·
Doppler effect with moving source and observer
- windowofhope
- · Replies 8 ·
How to find initial velocity with height, distance and angle
- Jordann2222
- · Replies 1 ·