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FinnZ [79.3K]
2 years ago
5

A ball moving horizontally across my desk rolls off at a velocity of 3.3 m/s. Assuming my desk is a height of 0.81 m, how long w

ill the ball be in the air?
Answer in units of seconds. Assume acceleration due to gravity is -9.81 m/s^2
Physics
1 answer:
kogti [31]2 years ago
3 0

Answer:

girl what- I can't answer this but I need points so I'ma just put this random lol sorry tho . ask the tutor

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Using this formula Vj = V; + at, If a vehicle starts from rest
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Answer:

<em>The final speed of the vehicle is 36 m/s</em>

Explanation:

<u>Uniform Acceleration</u>

When an object changes its velocity at the same rate, the acceleration is constant.

The relation between the initial and final speeds is:

v_f=v_o+a.t

Where:

vf  = Final speed

vo = Initial speed

a   = Constant acceleration

t   = Elapsed time

The vehicle starts from rest (vo=0) and accelerates at a=4.5 m/s2 for t=8 seconds. The final speed is:

v_f=0+4.5*8

v_f=36\ m/s

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The correct answer is letter A
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Some neodymium glass lasers can provide 100TW of power in 1.0 ns pulses at a wavelength of 0.26 micrometers. how much energy is
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Answer:

 E = 10⁵ J

Explanation:

given,

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The energy of a single pulse is:-

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