3 years ago

Plis help me !!

Physics

2 answers:

Svetllana [295]3 years ago

5 0

The answer is wind yes

marissa [1.9K]3 years ago

4 0

Answer:

Wind

Explanation:

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Two gliders on an air track collide in a perfectly elastic collision. Glider A has a mass of 1.1 kg and is initially travelling

Eva8 [605]

m1= mass 1 = 1.1 kg

Vi1 = initial velocity 1 = 2.7 m/s

m2= 2.4 kg

V2i = -1.9 m/s

We assume east as positive and west as negative.

Apply the formulas:

Vf1 = ?

$vf1=(\frac{m1-m2}{m1+m2})Vi1+(\frac{2m2}{m1+m2})Vi2$

Replacing:

$Vf1=\frac{(1.1-2.4)}{(1.1+2.4)}2.7+\frac{(2\times2.4)}{(1.1+2.4)}-1.9$ $Vf1=(\frac{-1.3}{3.5})2.7+(\frac{4.8}{3.5})-1.9$ $Vf1=-1-2.6=-3.6\text{ m/s}$

Answer: 3.6 m/s west

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1 year ago

Calculate the energy transfers in joules by a 4kW by appliances left for 2 minutes

Marianna [84]

Answer: 480 kJ

Explanation: Energy = power · time

E = Pt = 4000 W · 120 s = 480 000 J

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3 years ago

A treasure map instructs you to walk (25.0+A) m south, followed by (18.0+B) m east, then 64.5 m north, and finally 28.5 m east.

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3 years ago

A main difference between gravitational and electric forces is that electrical forcesA. attract. B. repel or attract. C. obey th

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Answer is :

repel or attract- B.

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4 years ago

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Answer:

Option C

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3 years ago

Read 2 more answers