A student tests the pitch of different sized rubber bands by stretching them around a box and then plucking them. What pitch does a thick rubber band have, and why? A- A thick rubber band vibrates fast, so it produces a low pitch sound
B- A thick rubber band vibrates fast, so it produces a high pitch sound
C- A thick rubber band vibrates slowly, so it produces a low pitch sound
D- A thick rubber band vibrafos slowly, so it produces a high pitch sound

b is the correct answer

mark me brainliest and hope this

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally