4 years ago

10. Most reabsorption occurs in the

Physics

1 answer:

Airida [17]4 years ago

3 0

The answer was B!!:)).

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A nearsighted person has a far point of 25.525.5cm and is prescribed contact lenses to correct her vision. What lens strength (a

muminat

Answer:

The right answer is "-3.90 D".

Explanation:

According to the question,

Far point,

v = -25.525 cm

and,

u = $\infty$

By using the lens formula, we get

⇒ $\frac{1}{f} =\frac{1}{v} -\frac{1}{u}$

On putting the values, we get

⇒ $=\frac{1}{-25.525} +\frac{1}{\infty}$

⇒ $f=-25.525 \ cm$

or,

⇒ $=-25.6 \ cm$

hence,

⇒ $Power (P)=\frac{100}{f}$

⇒ $=\frac{100}{-25.6}$

⇒ $=-3.90 \ D$

7 0

3 years ago

A 120-meter-long ski ift carries skiers from a station at the foot of a slope to a second station 40 m above. what is the IMA (i

Pepsi [2]

The ideal mechanical advantage (IMA) of an inclined plane is given by:
$IMA = \frac{L}{h}$
where L is the length of the inclined plane while h is the height.
In our problem, L=120 m and h=40 m. Therefore, the IMA of the ski lift is
$IMA= \frac{120 m}{40 m}=3$