Question

1. choose the best answer.

who proved mathematically that there was a direct relationship between matter and energy?
heinrich hertz
niels bohr
albert einstein
max planck

1. choose the best answer.

what did michael faraday and james clerk maxwell predict?
energy is restricted to specific levels.
energy absorbed by atoms is quantized.
light behaves as an electromagnetic wave.
light behaves like a particle.

Explanation:

• For question 9: Albert Einstein's famous equation \(E = mc^{2}\) mathematically shows the direct relationship between matter (\(m\)) and energy (\(E\)). Heinrich Hertz is known for work on electromagnetic waves. Niels Bohr made contributions to atomic structure (e.g., Bohr model of the atom). Max Planck is associated with quantum theory (Planck's constant \(h\)).
• For question 10: Michael Faraday and James Clerk Maxwell's work led to the prediction that light behaves as an electromagnetic wave. The idea that energy is restricted to specific levels and energy absorbed by atoms is quantized is more related to quantum theory (e.g., Bohr, Planck). The concept that light behaves like a particle (photon concept) was developed later, especially with Einstein's work on the photoelectric effect.

Answer:

1. Albert Einstein
2. Light behaves as an electromagnetic wave.