Author Question: A 100-efficient engine is being used to raise a 89-kg crate vertically upward at a steady rate. If ... (Read 40 times)

gonzo233 · **on:** Jul 29, 2018

A 100-efficient engine is being used to raise a 89-kg crate vertically upward at a steady rate. If the power output of the engine is 1620 W,

how long does it take the engine to lift the crate a vertical distance of 18.7 m? Friction in the system is negligible.

Question 2

A 22-A current flows into a parallel combination of 4.0-, 6.0-, and 12- resistors. What current flows through the 12- resistor?

A) 18 A
B) 11 A
C) 7.3 A
D) 3.7 A