3 years ago

Example 2.1

Physics

1 answer:

tatiyna3 years ago

8 0

Answer:

5 min 20 km --------

Explanation:

5 min 20 km --------

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Bill is farsighted and has a near point located 119 cm from his eyes. Anne is also farsighted, but her near point is 70.0 cm fro

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Answer:

Explanation:

For Bill's glasses)

d_o=25 cm-2 cm=23.2 cm

d_i=129 cm-2 cm=127 cm

We know that

$1 / f = 1 / d_o + 1 / d_i
$

$f=(1 / d_o + 1 / d_i)^-1
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so plug the numbers in

$f = (1 / (23) + 1 / (127))^-1
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For Anna's glasses)

d_o=25 cm-2 cm=23 cm

d_i=70.0 cm-2 cm=68 cm

Same thing

$(1 / f = 1 / d_o + 1 / d_i
)$

$f=(1 / do + 1 / di)^-1
$

so plug the numbers in

$f = (1 / (23) + 1 / (68))^-1
$

= 17.21 cm

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The total amount of energy and mass in the universe is _____. always changing slowly increasing constant slowly decreasing

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A force of 80 N is exerted on an object on a frictionless surface for a distance of 4 meters. If the object has a mass of 10 kg,

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Explanation:

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The object also had a force of 250 going S (opposite way) towards the machines, hence nothing moved, or as the question mentions, nothing happened

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