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attashe74 [19]
2 years ago
13

How much kinetic energy does a 4kg cat have while running at 9 m/s

Physics
2 answers:
Natalka [10]2 years ago
7 0

Answer:

162 joules

Explanation:

Kinetic Energy = 1/2 * m * v^2

                        = 1/2 * 4 * 9^2 = 162 joules

ludmilkaskok [199]2 years ago
3 0

Answer:

How much kinetic energy does a 4 Kg cat have while running at 9 m/s?

its 5 J of kinetic energy.

Explanation:

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3 years ago
Water enters an ice machine at 55F and leaves as ice at 25F. If the COP of the ice machine is 3.7 during this operation, determi
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Answer:

The required power is P_i = 0.2692 \ hp

Explanation:

From the question we are told that

   The temperature of the water entering ice machine is T_1 =  55 ^o F

    The temperature of the water leaving is T_2 = 25 ^oF

    The COP of the ice machine is COP= 3.7

    The production rate of an ice  \r m = 15.0 \ lbm /hr

    The energy that needs to removed from each lbm of water at 55 F is E = 169 Btu

Generally the cooling load of the ice machine is mathematically represented as

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      \r Q_L =15 * 169

=>  \r Q_L = 2535 \ Btu/h

Generally the COP of the ice machine is mathematically represented as

       COP =  \frac{\r Q_L}{P_i}

Here P_i is the net power  input needed to successfully run the ice machine

So  

     3.7 =  \frac{2535}{P_i}

=>   P_i = 685 \  Btu/h

Converting to horsepower

      P_i = \frac{685}{2545}

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3 0
3 years ago
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Answer:

If you punched thousands of holes in the aluminum foil, you would see thousands of small images in the viewer.

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If thousands of holes is punched/perforated in an aluminum foil, such that there were more holes than foil.

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3 years ago
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