1. What first alerted the person who found the bodies that something was wrong? The dog was barking wildly
His weekly pay was less than expected
The house was on fire
The door was unlocked

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.)

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.