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Montano1993 [528]
3 years ago
9

Convert -90.0°F to -5.0°c to kelvin

Physics
1 answer:
Ratling [72]3 years ago
4 0

-90.0 °F  =  -67 and 7/9 °C

-90.0 °F also = +205.372 K

-5.0 °C  =  +23 °F

-5.0 °C also  =  +268.15 K

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A marble, rolling with speed of 20m/sec rolls off the edge of the table that is 180m high (g=10m/sec2), find time taken to drop
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Answer:

<em>Choice: c. 6sec</em>

Explanation:

<u>Horizontal Launch </u>

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The horizontal component of the velocity is always constant because no acceleration exists in that direction, thus:

v_x=v

The vertical component of the velocity changes in time because gravity makes the object fall at increasing speed given by:

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To calculate the time the object takes to hit the ground, we use the same formula as for free-fall, since the time does not depend on the initial speed:

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3 years ago
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swat32
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Answer:

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Explanation:

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