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Gelneren [198K]
4 years ago
8

. السرعة المتجهة النسبية تطير طائرة في اتجاه الجنوب بسرعة

Physics
1 answer:
Ivanshal [37]4 years ago
3 0

Answer:

190 كم / ساعة ، 64 درجة جنوب شرق

Explanation:

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You connect a voltmeter to an unknown resistor in a circuit in order to measure the potential difference across that resistor. H
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Answer:

option (a)

Explanation:

To make a galvanometer into voltmeter, we have to connect a high resistance in series combination.

The voltmeter is connected in parallel combination with teh resistor to find the voltage drop across it.

An ideal voltmeter has very high resistance that means it has a resistance as infinity.

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4 years ago
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Explain how airplane wings and the wings of birds affect the air flowing over them to produce lift
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PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Leya [2.2K]

Answer:

c

Explanation:

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3 years ago
Using what you know about acids, bases and pH. Predict what will happen when vinegar is mixed with water. How would mixing bakin
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3 years ago
A 80 kg block starts from rest at the top of a 15m frictionless ramp. The block slides down the frictionless ramp onto a rough h
Nadusha1986 [10]

Answer:

W(fric) = -12000 J

Explanation:

Given that

mass ,m= 80 kg

Initial speed ,u= 0 m/s

Height ,h= 15 m

Final speed ,v= 0 m/s

We know that

Work done by all the forces = Change in the kinetic energy

W_{gravity}+W_{fric}=\dfrac{1}{2}mv^2-\dfrac{1}{2}mu^2

W_{gravity}+W_{fric}=\dfrac{1}{2}m\times 0^2-\dfrac{1}{2}m\times 0^2

W_{gravity}+W_{fric}=0

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W(fric) = -12000 J

negative sign indicates that force and displacement is in opposite direction.

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3 years ago
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