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wel
3 years ago
6

What is the Kinetic energy of a 2000 kg bus that is moving at 30m/s? Explain please

Mathematics
1 answer:
agasfer [191]3 years ago
4 0

There's a formula for that.

KE = (1/2)mv²

... = (1/2)(2000 kg)(30 m/s)²

... = 900,000 kg·m²/s²

... = 900,000 J

_____

It is helpful to know the relationship between kilograms, meters, seconds, and Newtons or Joules.

1 J = 1 kg·m²/s²

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Tricia spends $4.89 on 3 snack packs.
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Answer:

$1.63

Step-by-step explanation:

Divide 4.89 by 3

Answer: $1.63

Simple

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2 years ago
Hey! i’ll give brainliest please help
Elan Coil [88]

Answer:

I would assume it to be the second option, or B.

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3 years ago
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Rob Barros $15 from his father and then he borrows three dollars more drag numbers to write an equal using negative integers to
Vikentia [17]

Answer:

The amount of money in dollars that Rob owe his father is -$18

Step-by-step explanation:

From the given information:

Rob borrows $15 from his father and then he also borrows $3 more.

Thus, the amount he owes is father is now:

- $15  - $3 = - $18     Since we are using negative integers.

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2 years ago
Factories A and B produce computers. Factory A produces 3 times as many computers as factory B. The probability that an item pro
OleMash [197]

Answer:

P(A∣D) = 0.667

Step-by-step explanation:

We are given;

P(A) = 3P(B)

P(D|A) = 0.03

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Now, we want to find P(A∣D) which is the posterior probability that a computer comes from factory A when given that it is defective.

Using Bayes' Rule and Law of Total Probability, we will get;

P(A∣D) = [P(A) * P(D|A)]/[(P(A) * P(D|A)) + (P(B) * P(D|B))]

Plugging in the relevant values, we have;

P(A∣D) = [3P(B) * 0.03]/[(3P(B) * 0.03) + (P(B) * 0.045)]

P(A∣D) = [P(B)/P(B)] [0.09]/[0.09 + 0.045]

P(B) will cancel out to give;

P(A∣D) = 0.09/0.135

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3 years ago
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Question 10: 2/5 < 1/2
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