A) The north poles are at position A and B

b)

The north pole is at position A and the south pole is at position B

c)

There are no poles in magnets

d)

The south poles are at position A and B

e)

The south pole is at position A and the north pole is at position B

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.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

A10 kg box initially at rest is pulled 18 meters across a horizontal, frictionless surface by a 40 n force. what is the block’s final velocity over the 18 meters?