3 years ago

Categorize each statement as true or false.

Physics

1 answer:

blagie [28]3 years ago

5 0

Answer:

1. True

2. True

3. False

4. True

5. True

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Which form of energy is due to an object's motion?

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Answer: kinetic energy

Explanation: Kinetic energy has motion which is a moving object

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a boy Held a book of weight 50 newton’s in his fully outstretched hand, at a distance of 50 cm away calculate the moment of forc

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Answer:

the moment of force is 25 Nm.

Explanation:

Given;

weight of the book, F = 50 N

distance through which his hand was stretched, d = 50 cm = 0.5 m

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moment of force = F x r

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moment of force = 25 Nm

Therefore, the moment of force is 25 Nm.

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Two insulated wires, each 2.64 m long, are taped together to form a two-wire unit that is 2.64 m long. One wire carries a curren

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Answer:

$4.77\ \text{A}$

Explanation:

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$I_2$ = Current in one of the wires = 7.68 A

B = Magnetic field = 0.59 T

$\theta$ = Angle between current and magnetic field = $65^{\circ}$

$l$ = Length of wires = 2.64 m

$I$ = Current in the other wire

Magnetic force is given by

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Net current is given by

$I_n=I_2-I\\\Rightarrow I=I_2-I_n\\\Rightarrow I=7.68-2.91\\\Rightarrow I=4.77\ \text{A}$

The current I is $4.77\ \text{A}$ .

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Answer:

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