Answer:
.7917 m/s
Explanation:
This is a conservation of momentum question. You have an object initially at rest (cart) so that object is initially at 0 momentum. Indiana Jones is 83.5 kg and running 3.75 m/s so he starts with a momentum of 313.125 kg * m/s because momentum is equal to mass * velocity. Once the person jumps in the cart, the cart and the person can be considered one object and by conservation of momentum, the momentum of the Indiana-cart system is equal to 313.125 kg * m/s. By that, we can set that momentum equal to the combined mass * joint velocity. So 313.125 = (83.5kg + 312kg) * joint velocity. Then just solve for the velocity. The answer should be smaller than the intial velocity of the person of 3.75 m/s because the mine cart is HUGE at 312kg.
The photoelectric effect cannot demostrate that light can behave like a wave. It demostrates that light carries energy in quantas and that the packages of energy arrive in a kinetic manner proving that light behaves as a particle. The experiment that demostrates that light behaves like a particle as we as like a wave is the double-slit experiment mixed with the photoelectic particle.
The motion of particles during the transmission of wave energy
is periodic. A periodic wave is a continuous oscillating motion that connects
with simple harmonic motion. It is usual that periodic wave particles also
experiences simple harmonic motion. Additionally, the particles on the surface
of the water travel in circular motions forming a wave across the surface.
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