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3 years ago

Bowling ball have a potential energy or kinetic energy as it sits at the top of a building and why

Mathematics

2 answers:

sashaice [31]3 years ago

6 0

Answer:

potential because there is no force acting upon it

Step-by-step explanation:

bija089 [108]3 years ago

5 0

Answer:

Potential Energy

Step-by-step explanation:

Its potential energy because its not moving if the bowling ball was doing something like rolling then it would be kinetic energy(moving energy). It is potential because it staying still. Potential energy is stored energy meaning its not moving

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2 years ago

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3 years ago

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3 years ago

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3 years ago

A news agency publishes results of a recent poll. It reports that candidate A leads candidate B by 10% because 45% of the poll p

natali 33 [55]

We need to use the formula to find Margin of Error but through the sample proportion, that is

$E=z*\sqrt{\frac{\hat{p}(1-\hat{p})}{n}}$

We will use a 95% confidence interval, that is a z value of 1.96 (Search in a Normal distribution table)

A) For A our $\hat{p}$ (proportion) is equal to 0.45. So applying the formula,

$E=1.96*\sqrt{\frac{0.45(1-0.45)}{900}}$

$E=3.25\%$

B) We make the same of point A, but change our proportion to 0.35

$E=1.96*\sqrt{\frac{0.35(1-0.35)}{900}}$

$E=3.116\%$

c) We need to calculate the SE through proportion for 0.1, that is

$SE = \sqrt{(\frac{\hat{p_1}(1-\hat{p_1})}{n})+(\frac{\hat{p_2}(1-\hat{p_2})}{n})}$

Then our Error is given by,

$E=z*SE$

$E=1.96*\sqrt(0.45*\frac{0.55}{900}+0.35\frac{0.65}{900}$

$E=0.045$

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3 years ago