Author Question: In a supermarket, you place a 22.3-N (around 5 lb) bag of oranges on a scale, and the scale starts ... (Read 99 times)

ereecah · **on:** Jul 29, 2018

In a supermarket, you place a 22.3-N (around 5 lb) bag of oranges on a scale, and the scale starts to oscillate at 2.7 Hz. What is the force constant (spring constant) of the spring of the scale?

A) 650 N/m
B) 600 N/m
C) 330 N/m
D) 820 N/m
E) 410 N/m

Question 2

When 50 g of a certain 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? The specific heat of water is 1.00 kcal/kg C.

A) 0.33 kcal/kg C
B) 0.75 kcal/kg C
C) 1.3 kcal/kg C
D) 7.5 kcal/kg C