A force of 4.0 N applied to a spring compresses it by 8.0 cm. What is the amount of work done to compress the spring by an additional amount of 5.0 cm?
A) 20 J
B) 0.26 J
C) 0.50 J
D) 2.0 J
E) 50 N/m
Question 2
A block is on a frictionless horizontal table, on earth. This block accelerates at 1.9 m/s2 when a 90 N horizontal force is applied to it. The block and table are then set up on the moon where the acceleration due to gravity is 1.62 m/s2.
What is the weight of the block on the moon? A) 77 N
B) 67 N
C) 58 N
D) 48 N
E) 39 N
Copepods, from Ernst Haeckel's 1904 work Kunstformen der Natur
Success, You Rock, Achievement, The way we work
Alzheimer’s medications work by intensifying the effect of acetylcholine at the receptor.
Statistics Canada, Labour Force Survey
How far apart should two protons be if the electrical force of repulsion exerted on each one is ...
A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction ...