the independent variables are the different
laudry detergent
the dependent variable is color of the cloth
after washing
the control variables are the amount of water
added and by washing one cloth b just water
<span>hypothesis: the cloth washed with laundry
detergent is cleaner than the cloth that is just washed by water. </span>
Answer:
300 m/s
Explanation:
2d = vt
v = 2d/t
v = 2×90/.3
v=300 m/s
d = distance
t = time
v = velocity/speed of sound
Answer:
Im pretty sure its 11 m/s east because it is 22 m/s hitting 11 m/s and the force is harder hitting
Explanation:
im not 100% sure becasue i did this stuff a while ago
Answer
given,
Length of pipe, L = 2.65 m
speed of sound, v = 343 m/s
Pipe is open end Pipe
a) Lowest frequency
condition, for open end pipe


For lowest frequency

n = 1

f₁ = 64.72 Hz
b) For second frequency in bugle
n = 2

f₂ = 129.43 Hz
for n = 3

f₃ = 194.16 Hz
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