Example Solutions for

Step-by-Step Physics


Mechanics

Get help solving problems involving the motion of objects under external forces.

Compute average velocity, displacement or time step by step using a single formula:

Derive the solution for projectile motion:

Calculate the density of an object step by step:

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Oscillations & Waves

Explore the steps for solving common calculations involving waves and oscillating systems.

Find the step-by-step solution for the change in the frequency of sound from a moving source:

Explore the steps to solve for the frequency of a spring under damped harmonic motion:

Calculate the speed of a wave along a string:

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Electricity & Magnetism

Follow the steps for solving equations involving the electromagnetic force.

Derive the force and potential between two electric charges:

Compute the steps for the total resistance of resistors in parallel:

Explore the computation for capacitance between two concentric spheres:

Calculate the magnetic field inside an ideal solenoid:

Show the steps for the voltage gain and output voltage of an inverting amplifier:

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Thermodynamics

Follow the steps for solving equations for thermodynamic systems and principles.

Compute the change in internal energy:

Show how to derive the heat capacity ratio:

Find the efficiency of thermodynamic cycles step by step:

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Optics

Compute the steps for solving optics equations, including refraction, reflection and diffraction.

Find the steps to solve for the angle of refraction:

Solve for image distance and magnification in different mirrors:

Explore lens equations step by step:

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Relativity

Find the steps for relativistic calculations like time dilation, red shifts and kinetic energy.

Find the steps for relativistic effects like length contraction:

Solve for relativistic red shifts:

Compute the steps for relativistic momentum:

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Astrophysics

Get step-by-step assistance with astronomy problems.

Convert parallax to distance in parsecs or light years:

Compute the steps to determine the period for a body to orbit the sun:

Derive luminosity from apparent magnitude and distance:

Learn the steps to calculate the entropy of a massive black hole:

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Quantum Mechanics

Compute the steps for solving calculations involving quantum mechanics.

Solve for the energy of a photon given its wavelength:

Find the steps to solve for the Compton wavelength shift:

Compute the broadening of emitted wavelengths due to quantum uncertainty:

Apply the de Broglie relationship to find the wavelength of particles moving at high speed:

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Fluid Mechanics

Solve calculations for the mechanics of fluids step by step.

Calculate flow through a pipe using Poiseuille's law:

Solve for a Reynolds number step by step:

Compute the height reached by capillary action:

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Conservation of Energy

Apply the law of conservation of energy to derive physical properties of a system.

Find the maximum height reached by a projectile launched from the ground:

Determine the maximum velocity reached by a pendulum:

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