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leva [86]
2 years ago
5

How many known planets are in our galaxy?

Physics
1 answer:
strojnjashka [21]2 years ago
8 0
There are 100 billion planets
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In which type of bone does ossification occur in the membranes?
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In the formation of flat bones such as the skull the mandibles and the clavicles  
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6–23 an automobile engine consumes fuel at a rate of 22 l/h and delivers 55 kw of power to the wheels. if the fuel has a heating
Anna007 [38]

Explanation & answer:

Given:

Fuel consumption, C = 22 L/h

Specific gravity = 0.8

output power, P  =  55 kW

heating value, H = 44,000 kJ/kg

Solution:

Calculate energy intake

E = C*P*H

= (22 L/h) / (3600 s/h) * (1000 mL/L) * (0.8 g/mL) * (44000 kJ/kg)

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= 215111.1 j/s

Calculate output power

P = 55 kW

= 55000 j/s

Efficiency

= output / input

= P/E

=55000 / 215111.1

= 0.2557

= 25.6% to 1 decimal place.

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3 years ago
the mass of a lump of gold is constant everywhere but its weight isnt explain both in weight and mass
DiKsa [7]
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3 years ago
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A 13,000 kg helicopter accelerates upward a 0.5 m/s^2 while lifting a 2000 pound car. to the nearest newton, what is the lift fo
Vinil7 [7]

Lift force exerted by the air on the rotors=143244 N

Explanation:

we use Newtons second law

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F= lift force

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a= acceleration= 0.5 m/s²

g= acceleration due to gravity

F- (M+m)g=(M+m)a

F=(M+m)(a+g)

F=(13000+907.2)(0.5+9.8)

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What are the following statements? If there's one that mention a description of current action, or motion, that's your answer.
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