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3 years ago

DESPERATEA rocket of mass 40 000 kg takes off and flies to a height of 2.5 km as its engines produce 500 000 N of thrust.

Physics

1 answer:

77julia77 [94]3 years ago

5 0

Answer:

i=1250000000Nm

ii=50000m/s

Explanation:

energy=force ×distance

500000N×(2.5×1000)m

=1250000000Nm

ii. Force=mass ×acceleration

500000N =40000kg ×a

500000 ÷40000=12.5a

s=1/2at^2

2500m=1/2×12.5×t^2

2500m=6.25×t^s

2500÷6.25=400

t^2=400

√t^2=√400

t=20seconds

speed=distance ×time taken

=2500m × 20s

=50000m/s

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2 years ago

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2 years ago

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2 years ago

A car battery with a 12 V emf and an internal resistance of 0.11 Ω is being charged with a current of 56 A. What are (a) the pot

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Part a)

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Part c)

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Part d)

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Part e)

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Explanation:

Part a)

When battery is in charging mode

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Part c)

Rate of energy conversion into EMF is given as

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now we have

Part d)

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Part e)

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2 years ago

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