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tino4ka555 [31]
3 years ago
8

Woman has a near point of 75.0 cm. What focal length, f, is necessary for the corrective lens so that he can hold his physics bo

ok 20.0 cm from his eye and read the pearls of wisdom contained therein clearly?
Physics
1 answer:
Komok [63]3 years ago
8 0

Answer:

The focal length of the lens must be 27.3cm

Explanation:

Image distance= -75 cm

Object distance= 20.0cm

From:

1/v + 1/u = 1/f

-1/75+ 1/20 = 1/f

11/300= 1/f

f= 300/11

f= 27.3cm

The focal length of the lens must be 27.3cm

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Answer:

Voltmeter

Explanation:

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3 years ago
A rope passes over a fixed sheave with both ends hanging straight down. The coefficient of friction between the rope and sheave
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Answer:3.51

Explanation:

Given

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N=T\cdot d\theta

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f=\mu \cdot N

and T+dT-T=f=\mu Td\theta

dT=\mu Td\theta

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\frac{T_2}{T_1}==e^{1.256}

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7 0
3 years ago
g A meteoroid is in a circular orbit 600 km above the surface of a distant planet. The planet has the same mass as Earth but has
Nikitich [7]

Answer:

Explanation:

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= 6333 x 10³ m

M , mass of the planet = 5.97 x 10²⁴ kg .

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=  GM / R²

=  (6.67 x 10⁻¹¹ x 5.97 x 10²⁴ kg  / (6333 x 10³ m)²

9.92m/s²

3 0
3 years ago
Taking test, need physics help<br> ASAP please!
Anuta_ua [19.1K]

Answer:

im pretty sure its c the third answer i got that one right

Explanation:

your welcome :)

8 0
2 years ago
How can we define force?
zimovet [89]

Explanation:

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4 0
2 years ago
Read 2 more answers
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