A0.210-kg block along a horizontal track has a speed of 1.70 m/s immediately before colliding with a light spring of force constant 4.50 n/m located at the end of the track.

(a) what is the spring's maximum compression if the track is frictionless
(b) if the track is not frictionless, would the spring's maximum compression be greater than, less than, or equal to the value obtained in part (a)? greater lessequal

How does an observation about an object differ from an inference about that object

Boiling water is an example of physical change. true or false

Takumi works in his yard for 45 minutes each saturday. he works in the morning, and he wears sunscreen and a hat each time he works in the yard. what does takumi hope to reduce through his actions? the likelihood of stochastic effects, such as dna mutations the severity of stochastic effects, such as cancer the severity of non-stochastic effects, such as cancer the likelihood of non-stochastic effects, such as radiation sickness