An all female guitar quintet is getting ready to go on stage

An all female guitar quintet is getting ready to go on stage. The lead guitarist, Karen, Who is always in tune, Plucks her low E string and the other 4 members, squaentially, do low E string and Karen\'s low E string. These are the initial beat frequencies for each guitarist: f_beat, Evite = 5 Hz f_beat, Fraja = 3 Hz f_Didne = 0 Hz f_beat, = 1Hz Rank each member on the basis of the frequency of her low E string. a. The correct ranking cannot be determined because need more information than just the initial beat frequency. A flask of water rests on a scale that reads 100 N One at a time, each of four small blocks of unknown material are held completely submerged in the water by a rigid rod of negligible mass and volume. The mass and volume of each block is given in the table. The blocks do not touch any part of the flask. Rank these blocks on the basis of the scale reading when the blocks are completely submerged.

Solution

14.

Answer is a)The Correct ranking cannot be determined because need more information than just the initial beat frequency.

Because the beat frequency between Karen\'s guitar and Diane\'s guitar is 0 , these guitars play the exact same note and are in tune.To tune an instrument using beats, more information than just the beat frequency is needed. In addition to recording the initial beat frequency , each member, except Diane, also records the change in the frequency (increase or decrease) when they increase the tension in their low E string.

----------------------------------------------------------------------------------------------------------------------------------------------

15.

Answer is C>A=B>D

Buyonant force on a submerged object is given by

F=pgV

where p=density

g=9.81 m/s²

V=volume

F_A =2*(50*10^-3)*9.8 =0.98 N

F_B =0.5*(200*10^-3)*9.8 =0.98 N

F_C=4*(50*10^-3)*9.8 =1.96 N

F_D = 0.5*(100*10^-3)*9.8=0.49 N

Mass(g)	Volume(cm3)	Density =M/V (g/cm3)
100	50	2
100	200	0.5
200	50	4
50	100	0.5