Author Question: If we use 67 W of power to heat 148 g of water, how long will it take to raise the temperature of ... (Read 77 times)

tnt_battle · **on:** Jul 29, 2018

If we use 67 W of power to heat 148 g of water, how long will it take to raise the temperature of the water from 15C to 25C? The specific heat of water is 4190 J/kgK.

A) 22 s B) 5.3 s C) 114 h D) 93 s

Question 2

An open organ pipe is tuned to a given frequency. A second pipe with both ends open resonates with twice this frequency. What is the ratio of the length of the first pipe to the second pipe?

A) 1
B) 2
C) 4
D) .5