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Marizza181 [45]
3 years ago
8

A lamp is rated for 240v,2.5A.what is the cost of using the lamp for 3hrs if 1kWh of electricity cost #12​

Physics
1 answer:
marshall27 [118]3 years ago
6 0

Answer:

≈ 22¢

Explanation:

240 / 1000 = 0.240 kV

0.240 kV(2.5 A)(3 hr) = 1.8 kW•hr

1.8 kW•hr($0.12/kW•hr) = $0.216

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A toy rocket launcher can project a toy rocket at a speed as high as 35.0 m/s.
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Answer:

(a) 62.5 m

(b) 7.14 s

Explanation:

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(b) Let the rocket takes time t to reach to maximum height.

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3 years ago
A 65.8-kg person throws a 0.0413 kg snowball forward with a ground speed of 32.5 m/s. A second person, with a mass of 58.7 kg, c
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Answer:

v_{1} = 2.490\,\frac{m}{s}

v_{2} = 0.023\,\frac{m}{s}

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v_{1} = 2.490\,\frac{m}{s}

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