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Andrei [34K]
3 years ago
13

Two charges are separated by a certain distance. If the magnitude of each charge and the distance are both doubled, the force

Physics
1 answer:
ycow [4]3 years ago
3 0
Doubled I think i’m not sure tho
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Technician A says that the oil pan on a two-stroke engine holds more oil than a typical four-stroke engine. Technician B says th
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Describe one piece of evidence to show light waves do not need a medium travel from one place to another
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4 years ago
An object is thrown upward with some velocity. If the object rises 77.5 m above the point of release, (a) how fast was the objec
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Answer:

v_o=39\ m/s\\t_m=4\ s

Explanation:

<u>Vertical Launch Upwards</u>

In a vertical launch upwards, an object is launched vertically up from a height H without taking into consideration any kind of friction with the air.

If vo is the initial speed and g is the acceleration of gravity, the maximum height reached by the object is given by:

\displaystyle h_m=H+\frac{v_o^2}{2g}

The object referred to in the question is thrown from a height H=0 and the maximum height is hm=77.5 m.

(a)

To find the initial speed we solve for vo:

\displaystyle v_o=\sqrt{2gh_m}

v_o=\sqrt{2\cdot 9.8\cdot 77.5}

v_o=39\ m/s

(b)

The maximum time or the time taken by the object to reach its highest  point is calculated as follows:

\displaystyle t_m=\frac{v_o}{g}

\displaystyle t_m=\frac{39}{9.8}

t_m=4\ s

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