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sweet-ann [11.9K]
3 years ago
10

Find focal length of a concave mirror having 40 cm radius of curvature​

Physics
1 answer:
nignag [31]3 years ago
5 0

Answer:

The focal length of the given spherical mirror is 20cm.

Explanation:

plz follow me

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Alik [6]

Answer:

The answer is option a.

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3 years ago
HELP ME PLEASE! according ohm's law if the resistance remains constant what would happen if you decrease the amount of voltage b
SpyIntel [72]
B.
technically it would depend if the resistors were in series or parallel but B is the answer.
7 0
3 years ago
A solid conducting sphere is given a positive charge q. How is the charge q distributed in or on the sphere?
leva [86]

Answer:

Explanation:

the sphere is solid and conducting, so the charge is uniformly distributed over its volume.

7 0
2 years ago
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Explain the costruction and working of windmill
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6 0
2 years ago
In a car moving at constant acceleration, you travel 230 m between the instants at which the speedometer reads 40 km/h and 70 km
Goryan [66]
The relationship between the distance covered, initial and final speeds, and time can be expressed through the equation,

First equation,

                    2ad = Vf² - Vi²

Substituting the known values,
                   2(a)(0.230 km) = (70 km/h)² - (40 km/h)²
The value of a from the equation is 7173.92 km/h².

Second equation,
                   d = (Vi)(t) + 0.5at²

Substituting the known values,
                    0.230 km = (40 km/h)(t) + (0.5)(7173.92 km/h²)(t²)

The value of t from the equation is 4.1818 x 10^-3 hours which is also equal to 0.2509 minutes or 15 seconds.

Answer: 15 seconds
7 0
2 years ago
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