1. You walk into science and drop your books on the table. Calculate the
energy of the sound wave you created using this table:
2 cm
3 cm
4 cm
5 cm
A =
amplitude
I
A2 = square
of the
amplitude
4
9
E = energy
8 units
units
units
units

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?

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2