An elevator is accelerating upward at a rate of 3.8 m/s2. A block of mass 24 kg hangs by a low-mass rope from the ceiling, and another block of mass 63 kg hangs by a low-mass rope from the upper block.

(a) What are the tensions in the upper and lower ropes?

upper rope N
lower rope N
(b) What are the tensions in the upper and lower ropes when the elevator accelerates downward at a rate of 3.8 m/s2?

upper rope N
lower rope N

Urgent pls a. coal consumption levels off and remains flat. b. petroleum, natural gas, and renewables show an increase in consumption c. more nonrenewable resources continued to be consumed than renewable. d. there is little projected increase in nuclear energy use. e. carbon dioxide emissions are projected to decline as we approach 2040. global energy consumption is defined as the total energy used by an individual or organizations from around the world. use the graph above to analyze the projected energy consumption from now until 2040. which statements in the prompt apply? a) a, b, d b) b, c, d c) a, c, d d) a, b, c, d