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bogdanovich [222]
4 years ago
13

"the total angular momentum of an object changes when a net external force acts on the system." This statement is:

Physics
1 answer:
labwork [276]4 years ago
6 0
Here is the answer of the given question above. "The total angular momentum of an object changes when a net external force acts on the system." This statement is <span>"sometimes true. it depends on the forces point of application". The answer is option D.
</span>
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Which of the following is an example of resourcefulness?
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A. Discovering a quick way to handle a new problem 
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A camera takes a properly exposed photo with a 4.0 mm diameter aperture and a shutter speed of 1/1000 s. If the photographer foc
hoa [83]

Answer:

option E

Explanation:

given,

diameter = 4 mm

shutter speed = 1/1000 s

diameter of aperture = ?

shutter speed = 1/250 s

exposure time to the shutter time

E V = log_2(\dfrac{N^2}{t})

N is the diameter of the aperture and t is the time of exposure

now,

log_2(\dfrac{N^2}{t_1})=log_2(\dfrac{N^2}{t_2})

\dfrac{N_1^2}{t_1}=\dfrac{N_2^2}{t_2}

inserting all the values

\dfrac{4^2}{1000}=\dfrac{N_2^2}{250}

      N₂² = 4

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hence , the correct answer is option E

4 0
3 years ago
What was the result of the Mexican army's victory over the Texan garrison at the Alamo?
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3 0
3 years ago
Read 2 more answers
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Answer:

The acceleration of the car will be a=9600m/sec^

Explanation:

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We have to find the constant acceleration

Now from second equation of motion s=ut+\frac{1}{2}at^2

200=40\times 0.2+\frac{1}{2}\times a\times 0.2^2

a=9600m/sec^

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4 years ago
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