A horizontal spring with spring constant 85 n/m extends outward from a wall just above floor level. A 9. 5 kg box sliding across a frictionless floor hits the end of the spring and compresses it 6. 5 cm before the spring expands and shoots the box back out. How fast was the box going when it hit the spring?.

All businesses can discriminate against workers based on a nation of origin b. immigration status c. mental disability d ane

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.

The smokey mountains have over 2,100 miles of rushing mountain streams and rivers that flow through the park. in each mile lives a diverse community of native fish, amphibians, insects, and larvae, some of which are found only in the southern appalachians. park managers and scientific researchers test many factors such as fish populations, the watersheds and water tests to determine a) too many lizards are present b) the water quality of the stream c) rainwater is running into local streams d) if visitors to the park are overstaying their welcome