High frequency = D, short wavelength
Normal force for the rock because that makes an object stable at its position.
static friction because micro-welts hold its particle on its position so it doesn't change in position by a potential energy. Gravity makes it stay on the ground because its force attraction between an object and the earth.
Hope this helps <span />
Velocity = displacement/time
1.6 = 253/t
t = 158.125
It takes them about 158 seconds
Low levels of fecal coliform
Answer:
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