3 years ago

Power is the rate at which...........is done or the rate at which........... is converted from one form to another .

Physics

1 answer:

34kurt3 years ago

8 0

Answer:

the answer is c I thought

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When reading the printout from a laser printer, you are actually looking at an array of tiny dots.

solniwko [45]

Answer:

The value is $y = 3.097 * 10^{-5} \ m$

Explanation:

From the question we are told that

The diameter of the pupil is $d_p = 4.2 \ mm = 4.2 *10^{-3} \ m$

The distance of the page from the eye $d = 29 \ cm = 0.29 \ m$

The wavelength is $\lambda = 500 \ nm = 500 *10^{-9} \ m$

The refractive index is $n_r = 1.36$

Generally the minimum separation of adjacent dots that can be resolved is mathematically represented as

$y = [ \frac{1.22 * \lambda }{d_p * n_r } ]* d$

$y = [ \frac{1.22 * 500 *10^{-9} }{4.2 *10^{-3} * 1.36} ]* 0.29$

$y = 3.097 * 10^{-5} \ m$

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3 years ago

A car completes a journey in 2 hours. Its average speed over this journey was 45mph. Calculate the distance travelled by the car

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Distance = average speed ×time

Distance = 45 × 2

Distance = 90 miles

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Theories and Laws.

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Laws and theories are similar in that they are both scientific statements that result from a tested hypothesis and are supported by scientific evidence.

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Two cars collide and come to a complete stop. where did all of their energy go?

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Most of the energy will be absorbed by the materials that make up the cars, causing them to deform. The energy will also be converted into sound energy, causing a loud bang upon collision. Also, some energy will be converted to thermal energy, which will cause the cars to heat up slightly.

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