The cohesion of water molecules to each other
Density = (mass) / (volume)
= (50.4) / (57.9) = 0.87 gm/cm³
Since the density is less than 1.0, the paraffin floats in water.
Since it's so close to 1.0 on the low side, the paraffin floats
with most of it under the water line.
Answer:
Explanation:
The first part of this question is simply asking us to convert the speed from miles per hour to meters per second:
choice C.
The next part wants us to use the equation for acceleration and find the acceleration:
where v is final velocity, v0 is initial velocity, and t is time in seconds (which was one of the reasons we had to convert the initial velocity from 60.0 mph to m/s):
and
a = 10.7 m/s/s, choice B.
A 500 g ball swings in a vertical circle at the end of a 1.4-m-long string. when the ball is at the bottom of the circle, the tension in the string is 18 n.
The ability of singers to shatter glass is due to the control of frequency in their voices. The sound waves will vibrate the air particles that surround the glass at its resonant frequency. The glass will break if a singer sings too loudly.
