A marble of mass of 10 g is placed on the track at the starting point. The height attained by the marble on the opposite side is measured. This is repeated five times.
Which of the following experimental results would support the conservation of energy
as it is explained in the reading?

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Abike rider starts from rest and accelerates 28.0 meters down a slope in 5.00 seconds. what is her acceleration? select one: a. 3.21 m/sec2 b. 1.75 m/sec2 c. 9.80 m/sec2 d. 2.24 m/sec2