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2 years ago

Classical physics is a good approximation to modern physics under certain circumstances. What are they?

Physics

1 answer:

Aleks [24]2 years ago

4 0

Answer and Explanation:

In classical physics we study about macroscopic objects and in modern physics we study about microscopic objects but under some circumstances classical physics is a approximation to modern physics such as

The object must be microscopic but they should be large enough so that we can see that through a microscope
The speed of the object should be very less it should be about 1 % of the speed of the light
They should be involved with very week gravitational field

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3 years ago

A student places a block on a table and hangs one mass from the block. The student lets the block go and observes the block move

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Magnitude of acceleration

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2 years ago

An automobile starter motor has an equivalent resistance of 0.0500Ω and is supplied by a 12.0-V battery with a 0.0100-Ω internal

alexandr1967 [171]

Answer

given,

resistance = 0.05 Ω

internal resistance of battery = 0.01 Ω

electromotive force = 12 V

a) ohm's law

V = IR

and volage

$V = \epsilon - Ir$

now,

$IR = \epsilon - Ir$

$I(R+r) = \epsilon$

$I= \dfrac{\epsilon}{R+r}$

inserting the values

$I= \dfrac{12}{0.05+0.01}$

I = 200 A

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V = I R

V = 200 x 0.05

V = 10 V

c) Power

P = I V

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d) total resistance = 0.05 + 0.09 = 0.14 Ω

$I= \dfrac{\epsilon}{R+r}$

$I= \dfrac{12}{0.14+0.01}$

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3 years ago

Read 2 more answers

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Answer:

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2 years ago

Which of the following is defined as an area of the body surface that is innervated by a single spinal nerve?

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Answer:

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The sensory nerve which is present in the periphery of the body are the type of nerve which helps to transmit signals from sensation such as pain, temperature, etc. to the spinal cord from some specific area of the anatomy.

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3 years ago