2 Points
Which of the following statements are not true about gravity? Check all that
apply.
A. Gravity exists only on Earth.
O
B. Gravity exists between two objects that have mass.
O
C. Gravity is a force that pulls two objects together.
D. Gravity exists in the whole universe.
E. Gravity doesn't exist between Earth and the sun.

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.

Place me with this question is my last question

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.