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3 years ago

How can Newton's laws be applied to protect a smartphone screen during a collision?

Physics

1 answer:

Sonja [21]3 years ago

7 0

smartphones break due to forces acting on the material.

force causes material to deform.

material is often brittle and cracks due to a limit on hardness / electricity in screens.

newton's 2nd law states

force = DV / DT

to help phones we must slow down change in momentum to reduce the force

thus we must use some form of damping in the form of a case .

the case is typically able to deform and rubber is elastic converting the kinetic energy to heat as it deforms instead of transferring it through the screen.

therefore the change in velocity occurs over a longer time. therefore the impulse decreases

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Answer:

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Explanation:

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3 years ago

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What is the speaker’s power output if the sound intensity level is 102 dBdB at a distance of 25 mm ? Express your answer to two

lesya [120]

Answer:

Power = 124.50 W

Explanation:

Given that:

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where;

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$10^{10.2} = \dfrac{I}{10^{-12}}$

$I = 10^{10.2} \times 10^{-12}$

I = 0.01585 W/m²

If we recall, we know remember that ;

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Power = 0.01585 W/m² × 4 × 3.142 × (25 m)²

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3 years ago

Which of these is a correct equation for force? A. F = m × a B. F = m ÷ a C. F = a ÷ m

Ber [7]

It would be f=ma so
a.
f=m <span>× a</span>

4 0

3 years ago

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crimeas [40]

Answer: potential to kinetic/mechanical

Explanation:

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3 years ago

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Tresset [83]

Answer:

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b. vector, scalar

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a. scalar, vector

[b]. vector, scalar

3 0

2 years ago