1.8kg 42J 9.8 how high is the shelf

When an object is heated it contracts. a. true b. false

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?