Which of the following observations represent conclusive evidence of an interaction? 1) Change of temperature without change of velocity2) Change of direction without change of speed3) Change of position without change of velocity4) Change of shape or configuration without change of velocity5) Change of identity without change of velocity

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Find the mass by adding the numbers from the three sliders

which pair of rays would be part of a ray diagram showing reflection? - a & b which pair of rays would be part of a ray diagram showing refraction? c & a