Help for a test no links easy 4rd grade questions and please give the right answer. Will give brainliest What is the texture? *
8. What is the mass? *
9. 2 cm tells which property? *
10. What is the sink/float property? *
11. What tool would help the students get a close look at the rock sample? *
12. What tool would help the students find the mass of the rock sample? *

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?