Asurveyor measures the distance across a straight river by the following method: starting directly across from a tree on the opposite bank, he walks 118 m along the riverbank to establish a baseline. then he sights across to the tree. the angle from his baseline to the tree is 36.0°. how wide is the river?

Aray diagram for a refracted light day is shown. what does the dashed line represent

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)