Author Question: A very light ideal spring stretches by 21.0cm when it is used to hang a 135-N object. What is the ... (Read 87 times)

anshika · **on:** Jul 29, 2018

A very light ideal spring stretches by 21.0cm when it is used to hang a 135-N object. What is the weight of a piece of electronic equipment that would stretch the spring by 44.9cm if you hung the equipment using the spring?

A) 405 N B) 289 N C) 176 N D) 63 N

Question 2

Velma passes Mort at a high speed. Velma and Mort each have identical light-clocks. Mort and Velma both observe both clocks to tick simultaneously at 12 noon on both clocks. Velma observes that Mort's next tick occurs

A) before or after or at the same time as her own tick, depending on Velma's precise speed relative to Mort.
B) at the same time as the tick on her clock.
C) before her own clock ticks.
D) after her own clock ticks.
E) only when the moon is full.