A rock accelerates down a hill at 7m/s2 with a force of 30.0N. What is the mass of the rock?

m=EF / a

Explanation:

m=30.0N / 7m/s2

m=4.2857...

m=4.29kg

srry if wrong but

hope it helps

take care

low freq = 100 mhz

low wavelength =101.7m

length = 3x10^8/freq

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

i really hope this answer you out! it makes my day people like you and giving back to the community that has me through school! if you could do me a favor, if this you and this is the very best answer and you understand that all of my answers are legit and top notch. mark as brainliest! and have a awesome day!