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Maru [420]
3 years ago
12

4. If the Kitty Hawk Flyer has 12 HP, do some research to find out how to express this power in the SI system and report the num

erical value in kilowatts.
Physics
2 answers:
lesya [120]3 years ago
8 0

Product of my research: 1 HP = 746 watts .

12 HP = (12 x 746 W) = 8,952 W

8,952 W = 8.952 kW
Alik [6]3 years ago
4 0

Explanation:

The Kitty Hawk Flyer has 12 HP. We need to express this power in the SI system and in kilowatts.

The SI unit of power is watts and HP is also one of the unit of power. The relationship between the watts and horse power is :

1 HP = 745.7 watts

To convert 12 HP to watts we will use the above relation. So,

12 HP = 8948.4 watts

Also, 1 kilowatts = 1000 watts

So, 8948.4 watts = 8.94 kilowatts

Hence, this is the required solution.

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Explain what a concentration gradient is and what it means for a molecule to diffuse down its
MArishka [77]

Answer:

Diffusing the gradient ensures that most of the molecules in high concentration zone will wind up in the previously low concentration by the spontaneous movement of small molecules.

Explanation:

A gradient of concentration is the difference between in concentration of one place / area substance to different area. Having a molecule flow down its concentration gradient means moving the molecules from hypotonic areas to the concentration hypertonic areas

Diffusing the gradient ensures that most of the molecules in high concentration zone will wind up in the previously low concentration by the spontaneous movement of small molecules.

7 0
3 years ago
A dockworker applies a constant horizontal force of 90.0 N to a block of ice on a smooth horizontal floor. The frictional force
Oliga [24]

Answer:

The mass of the ice block is equal to 70.15 kg

Explanation:

The data for this exercise are as follows:

F=90 N

insignificant friction force

x=13 m

t=4.5 s

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applying the equation of rectilinear motion we have:

x = xo + vot + at^2/2

where xo = initial distance =0

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therefore the equation is:

x = at^2/2

Clearing a:

a=2x/t^2=(2x13)/(4.5^2)=1.283 m/s^2

we use Newton's second law to calculate the mass of the ice block:

F=ma

m=F/a = 90/1.283=70.15 kg

6 0
3 years ago
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The air in a kitchen has a mass of 60.0kg and a specific heat of 1505J/(kg°C).
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Your answer is 632,100J which is Choice D
8 0
3 years ago
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A lamp draws a current of 0.1 A when it is connected to a 122-V source. (
Setler79 [48]
The power of the lamp would be calculated with the equation of ohm laws. P = U x I = 122V x 0.1A = 12.2W
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3 years ago
If the forces acting on an object are balanced, wihat must be true about the motion of this object?
wolverine [178]

The correct answer to the question is : D) Be moving at a constant velocity.

EXPLANATION:

As per Newton's first laws of motion, every body continues to be  at state of rest or of uniform motion in a straight line unless and until it is compelled by some external unbalanced forces acting on it.

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As per the options given in the question, the last one is true for an object under balanced forces.

5 0
3 years ago
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