The system shown above is released from rest. If the friction is negligible, the acceleration of the 4 kg block sliding on the table shown above is:
(Take g = 10 m/s2)
A. O m/s?
B. 1.7 m/s2
C. 3.3 m/s2
D. 5 m/s2
E. 10 m/s2
with explanation plz

Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?

Select the correct answer. what does the process of natural selection involve?