Finding the work function and the kinetic energy: Photoelectric effect
Question: 450-nm (450\(\times\)10\(^{-9}\) m) wavelength light is incident on sodium surface for which the threshold wavelength of the photoelectrons is […]
AC circuit: Finding the frequency of the power supply
Question: There is a AC circuit with a resistor \(R=50 \Omega\). When the time is zero, the voltage is equal […]
Physics of a spring: Relationship between potential energy and work
Question: A spring is stretched after 4.0-kg object is hung on it vertically. The displacement is measured as 0.020 m. […]
One dimensional problem on quantum mechanics: Infinite square well potential
Question: There is an infinite potential well of width \(a\) for a quantum system. Find the ground state energy. Answer: […]
Find a volume: Triple integral
Question: Evaluate \(\iiint_D x\sqrt{1+x^2+y^2+z^2}dxdydz\) The domain is \(D=\{(x,y,z) | x\geq 0, y\geq 0, x^2+y^2+z^2\leq 1 \}\). Answer: Use the polar […]
One dimensional quantum problem: A particle into the step potential
Question: Find the coefficients of transmission and reflection for a particle incident on the potential shown. The particle has energy, […]
How much is it shortened?: Lorentz contraction
Question: A 2.00-m stick is moving in one direction, and the length is observed as 1.00 m in the laboratory […]
Finding the intersection of two functions: logarithmic functions
Question: There are two functions: \(y = 2+\log_2(23-x) \) \(y = \log_{\sqrt{2}}(x-8)\) Find the \(x\)-coordinate of the intersection of these […]
Ballistic pendulum: The conservation of energy and momentum
Question: A 0.010-kg bullet is fired toward a 2.0-kg pendulum. The bullet is sucked in the pendulum block and both […]
Magnetic field by a circular ring with current flow: Calculus based
Question: As shown in the figure, there is a circular coil with current flow, \(I\). Knowing that the radius is […]