Zaccharias Janssen was a scientist who studied properties of light and invented one of the first compound microscopes in the late 1500s. Which property did Janssen most likely believe about light during the time of his invention?a.Light bends around objects.
b.Light bounces off surfaces.
c.Light travels in a curved path.
d.Light is made up of waves.

Answers

Answer 1

Answer:

Answer : Option B) Light bounces off Surfaces.

Explanation : Zaccharias Janssen a scientist who was a spectacle maker, is considered to be the founder of a compound microscope; believed that the ray of light when focused on a reflecting surface bounces back. This was the main property of light which he discovered and which led him to a new innovation.

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The diagram shows a ball resting at the top of a hill. Which statement best describes the energy in this system

Answers

Answer:

Option A is correct.

A.The potential energy in the system is greatest at X.

Explanation:

A ball resting at the top of a hill will have greatest potential energy because when an object is at rest it tend to have greatest potential energy. When It moves from position X to Y the potential energy of the ball will decrease and its kinetic energy will increase.

Answer choices are listed below.

A.The potential energy in the system is greatest at X.

B.The kinetic energy in the system is greatest at X.
C.Total energy in the system decreases as the ball moves from X to Y.
D.Total energy in the system increases as the ball moves from X to Y.

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