I will give all my points For who ever answers this A ball rolls down a ramp. starting from rest. After 4.9 seconds, its velocity is
7 m/s. What is the acceleration of the ball?

One of the methods used to reduce energy use is: a. energy efficiency c. energy conservation b. energy reservation d. energy holding select the best answer from the choices provided a b c d i know the answer is not option a

Apatient is in need of hydration. which type of solution are the patient's cells most likely in?

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.