3 years ago

What one part of a circuit might cause your calculator to be off?

Physics

1 answer:

Tanzania [10]3 years ago

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Resistors tell me if im right

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A virtual image is formed 17.0 cm from a concave mirror having a radius of curvature of 39.0 cm. (a) Find the position of the ob

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Explanation:

Image distance, v = -17 cm (-ve for virtual image)

Radius of curvature of concave mirror, R = 39 cm

Focal length, f = -19.5 cm (-ve for a concave mirror)

(a) Using mirror's formula as :

$\dfrac{1}{v}+\dfrac{1}{u}=\dfrac{1}{f}$

$\dfrac{1}{u}=\dfrac{1}{f}-\dfrac{1}{v}$

$\dfrac{1}{u}=\dfrac{1}{-19.5}-\dfrac{1}{(-17)}$

u = 132.6 cm

So, the object is placed 132.6 cm in front of the mirror.

(b) Magnification of the mirror, $m=\dfrac{-v}{u}$

$m=\dfrac{-17}{132.6}$

m = -0.128

Hence, this is the required solution.

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Convert 1.3 km to m

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Explain: from km to m times 1000

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An average man is 80 k (800 N) and the area of the shoes he is wearing is 0.0092 m2. What is the pressure he is exerting on the

S_A_V [24]

Answer:

P = 86956.52 Pa

Explanation:

Data:

F = 800 N
A = 0.0092 m²
P = ?

Use the formula:

$\boxed{\bold{P=\frac{F}{A}}}$

Replace and solve:

$\boxed{\bold{P=\frac{800\ N}{0.0092\ m^{2}}}}$

$\boxed{\bold{P=86956.52\ Pa}}}$

The pressure it exerts on the ground is <u>86956.52 Pascal.</u>

Greetings.

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