Which statement is true concerning the evidence for black holes?

scientists can see black holes with powerful telescopes.

scientists can see the effect of black holes on nearby stars.

scientists can see trails left in space by black holes.

there is no evidence for black holes.

Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation