A mass suspended from a spring is raised a distance of 5 cm above its resting position. The mass is released at time t=0 and allowed to oscillate. After one third of a second, it is observed that the mass returns to its highest position, which was 4. 5 cm above its resting position. What is the rate of change of the position of the mass at t = 2. 1 seconds?.

Why do you think electric energy for households is generally supplied by power plants instead of by an electric generator at home.

Which statements are true for invasive species? 1. they always stabilize an ecosystem. 2. they’re always successful in adjusting to a new habitat. 3. they often compete with the native species for resources. 4. they have the ability to displace the native species. 5. they’re always pests.

Which set of lines provides the best textual evidence for why death ought not be proud? a)and soonest our best men with thee do go, rest of their bones and souls' delivery! b)one short sleep past we wake eternally and death shall be no more: death thou shalt die! c)death be not proud though some have call'd thee mighty and dreadful for thou art not so: d)from rest and sleep which but thy picture be 5 much pleasure then from thee much more must flow