Author Question: A 2-kg mass is hung from a spring (k = 18 N/m), displaced slightly from its equilibrium position, ... (Read 80 times)

ssal · **on:** Jul 27, 2018

A 2-kg mass is hung from a spring (k = 18 N/m), displaced slightly from its equilibrium position, and released. What is the frequency of its vibration?

A) 1.5/ Hz
B) 1.5 Hz
C) 3.0/ Hz
D) 3.0 Hz
E) 1.5 Hz

Question 2

If 50 g of material at 100C is mixed with 100 g of water at 0C, the final temperature is 40C. What is the specific heat of the material?

A) 0.33 kcal/kg C
B) 0.75 kcal/kg C
C) 1.33 kcal/kg C
D) 7.5 kcal/kg C
E) 33 kcal/kg C