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Wittaler [7]
3 years ago
10

Define physical quantity​

Physics
2 answers:
NemiM [27]3 years ago
7 0

Answer:

The quantity which can be measured is called physical quantity.

bonufazy [111]3 years ago
7 0

Answer:

Those quantities which can be measured are called physical quantities.

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A 30 cm-long wire carrying a current of 0.5 A is immersed in a uniform magnetic field of 4 T. If the magnetic field is oriented
Lera25 [3.4K]

Answer:

Magnetic force, F = 0.6 N

Explanation:

It is given that,

Length of the wire, L = 30 cm = 0.3 m

Current carrying in the wire, I = 0.5 A

Uniform magnetic field, B = 4 T

To find,

The magnetic force

Solve,

A force is exerted by the wire in the magnetic field that is given by :

F=ILB\ sin\theta

Here, \theta=90

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F=0.5\ A\times 0.3\ m\times 4\ T

F = 0.6 N

Therefore, the magnetic force exerted by the wire in the magnetic field is 0.6 N

5 0
3 years ago
You hold a bucket in one hand, and in the bucket is a 500 g rock. You swing the bucket so the rock moves in a vertical circle 2.
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Answer:

3.28 m/s

Explanation:

From the question,

Applying newtons ,

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But,

Centriputal force is equal to the weight of the rock

F = mg................. Equation 2

Equate equation 2 into equation 1

mg = mv²/r

Therefore,

v = √gr...................... Equaion 3

Given: r = 2.2/2 = 1.1 m

Constant: g = 9.8 m/s²

Substitute into equation 3

v = √(9.8×1.1)

v = √(10.78)

v = 3.28 m/s

Hence the minimum speed is 3.28 m/s

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3 years ago
How does the law of conservation of energy apply to machines?
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<span>Energy transferred to a machine equals energy transferred from it. It is because according to conservation of energy we can't create or destroy energy so, energy remains constant however, their form can be change by machine's

In short, Your Answer would be Option C

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musickatia [10]
A rock positioned on the edge of a cliff.  

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hf vb sh ff shod hoke Spinx fishy

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