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KengaRu [80]
3 years ago
10

Evan notices a small fire in his workplace. Since the fire is small and the atmosphere is not smoky he decides to fight the fire

himself. What’s the one thing Evan didn’t consider?
Engineering
1 answer:
Norma-Jean [14]3 years ago
7 0

Answer:

not calling the firemean

Explanation:

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If the contact surface between the 20-kg block and the ground is smooth, determine the power of force F when t = 4 s. Initially,
grigory [225]

Answer:

The power of force F is 115.2 W

Explanation:

Use following formula

Power  = F x V

F_{H} = F cos0

F_{H} = (30) x 4/5

F_{H} = 24N

Now Calculate V using following formula

V = V_{0} + at

V_{0} = 0

a = F_{H} / m

a = 24N / 20 kg

a = 1.2m / S^{2}

no place value in the formula of V

V = 0 + (1.2)(4)

V = 4.8 m/s

So,

Power = F_{H} x V

Power = 24 x 4.8

Power = 115.2 W

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Explanation:

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Norma-Jean [14]

Answer:

C

Explanation:

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Answer:

C

Explanation:

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¿Cuándo se formarán cristales en una mezcla que se está evaporando?
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