2 easy science questions. please help. will drop brainliest

Physics

1 answer:

Savatey [412]3 years ago

5 0

Answer:

4 b 5 c

Explanation:

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Considering , will F ever equal zero?

Kamila [148]

No it will not because F will equal 3 not 0

4 0

4 years ago

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Martha's mass is 50 kg. Timmy's mass is twice as much. To reach to the first floor, Timmy took the stairs while Martha climbed u

Aleonysh [2.5K]

Answer:

Pentane reacts with oxygen in a combustion reaction to produce carbon dioxide and water. C5H12 + O2 -> CO2 + H2O If you have 5.00 moles of pentane, how many moles of water will be produced? Hexane combusts in the presence of oxygen to produce carbon dioxide and water.

Explanation:

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3 years ago

The maximum tension that a 0.80 m string can tolerate is 15 N. A 0.35-kg ball attached to this string is being whirled in a vert

zimovet [89]

Answer:

v=5.86 m/s

Explanation:

Given that,

Length of the string, l = 0.8 m

Maximum tension tolerated by the string, F = 15 N

Mass of the ball, m = 0.35 kg

We need to find the maximum speed the ball can have at the top of the circle. The ball is moving under the action of the centripetal force. The length of the string will be the radius of the circular path. The centripetal force is given by the relation as follows :

$F=\dfrac{mv^2}{r}$