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meriva
2 years ago
10

Joe gained 5 pounds. John gained 14 pounds. Jordan lost 20 pounds. Josh lost 11 pounds. Who had the biggest change in weight? A.

Jordan B. Joe C. John D. Josh
Mathematics
2 answers:
photoshop1234 [79]2 years ago
8 0

Answer:I think Jordan is this a trick question

Step-by-step explanation:

Marrrta [24]2 years ago
7 0
Jordan has the biggest weight change
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A hairdryer transfers 36,000J in one minute, what is the power rating of the hairdryer?
Verdich [7]

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1. 600 watts

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3. 55%

4. 20 J

5. The cost of running the fire is 8p.

Step-by-step explanation:

1. Energy = 36 000 J , t = 1 minute = 60 seconds

Power = \frac{energy}{time}

           = \frac{36000}{60}

          = 600 watts

2. Power = \frac{work done}{time}

⇒ work done = Power × time

                      = 99 × 360

                      = 35640 J

3. Efficiency = (Output / Input) × 100

                    = \frac{55}{100} × 100

                    = 55%

4. Work done = Force × distance

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                      = 20 J

5. Given that 1 KWh cost 2p, Power = 4 KW and time = 4 hours.

  Power = \frac{energy}{time}

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3 years ago
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