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oksano4ka [1.4K]
3 years ago
15

A rock falls for 1.43 seconds. how far did it fall?

SAT
1 answer:
creativ13 [48]3 years ago
5 0

The Answer is 10.03 m

Explanation:

Given,

time =1.43 s

distance =?

acceleration= 9.81

Now by the formula

s=ut + 1/2 gt^2

s= 0× 1.43 +1/2 (9.81)×(1.43)^2

s= 10.03 m

therefore distance = 10.03 m

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Two fifth grade classes are attending an amusement park as a field trip. Their teachers purchased the tickets for the class and
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Answer:

1 Adult ticket=$35

1 Children ticket=$20

Step-by-step explanation:

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6C+6A=330

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42C+30A=1890

42C+42A=2310

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credits to Michael for the secondary part

7 0
3 years ago
The surface tension of water in air is approximately 0.00518 lbf/ft. if the atmospheric pressure is 14.7psia, what is the pressu
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Based on the calculations, the pressure inside this droplet is equal to 2,909.35 kPa.

<u>Given the following data:</u>

  • Surface tension = 0.00518 lbf/ft to N/m = 0.00702 N/m.
  • Atmospheric pressure = 14.7psia to kPa = 101.35 kPa.
  • Diameter = 0.01 mm to m = 0.00001 m.

Radius, r = \frac{diamter}{2} =\frac{0.0001}{2} = 0.000005 m.

<h3>How to determine the pressure inside a droplet.</h3>

For a droplet with only one surface, its pressure is given by this formula:

P_1-P_2=\frac{2 \tau}{r} \\\\P_1=\frac{2 \tau}{r}+P_2

Substituting the given parameters into the formula, we have;

P_1=\frac{2 \times 0.00702}{0.000005} + 101.35\\\\P_1=2808+ 101.35

Inside pressure = 2,909.35 kPa.

Read more on pressure here: brainly.com/question/24827501

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