Light incident on a surface at an angle of 45° undergoes diffused reflection. At what angle will it reflect? A.
only at angles less than 45°
B.
only at angles greater than 45°
C.
only at 45°
D.
at any angle between -90° and 90°
E.
only at 0°

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.