A 2. 5-kg box, sliding on a rough horizontal surface, has a speed of 1. 2 m/s when it makes contact with a spring (see the figure). The block comes to a momentary halt when the compression of the spring is 5. 0 cm. The work done by the friction, from the instant the block makes contact with the spring until is comes to a momentary halt, is -0. 50 j.

Keep your choice of a major there is probably no single correct choice. a ) to yourself. b) in perspective. c) based solely on the expectations of others. d) all of the answer choices are correct.

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.

These three organisms are interdependent on each other for their survival. what will happen if foxes are eliminated from the region? a. there will be more rabbits and less grass in the region. b. there will be more grass and fewer rabbits in the region. c. there will be fewer rabbits and less grass in the region. d. there will be more rabbits and more grass in the region.