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seraphim [82]
2 years ago
7

If you have a mass of 30 kilograms and you are resting on top of a hill that is 20 meters high how much energy would you have.

Physics
1 answer:
myrzilka [38]2 years ago
4 0

Answer:

we can have 2 values one is with g taken as 10 m/s² and the second with g taken as 9.8m/s² where g is the acceleration due to gravity

when g is 10,

30kg×10m/s²×20m. using m×g×h

6000 J

when g is 9.8

30×9.8×20

4080 J

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Velocity: You leave on a 549-mi trip in order to attend a meeting that will start 10.8 h after you begin your trip. Along the wa
rewona [7]

Answer:

1.55 h

Explanation:

Let the time to spend over dinner be t.

Since I need to spend 10.8 h for the whole trip, then I have 10.8 - t hours left to drive.

Speed = distance/time

v = \dfrac{d}{10.8-t}

d = v(10.8-t)

The distance is 549 and maximum speed is 65 mi/h.

549 = 65(10.8 - t)

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t = 10.8 - 8.45 = 1.55 \text{ h}

5 0
3 years ago
Help!! Please!!
sattari [20]
<span> the answer is 1,500 & 1,700


</span>
6 0
3 years ago
A mobile phone is 35% efficient. Over half an hour 11 kJ of energy is transferred to the phone.
kramer
<h3><u>A</u><u>n</u><u>s</u><u>w</u><u>e</u><u>r</u><u>:</u><u>-</u></h3>

  • Energy Transferre=11KJ
  • Efficiency=35%
<h3>☆Usefully transferred energy:-</h3>

\\ \sf\longmapsto 35\%\:of 11

\\ \sf\longmapsto 35\%\times 11

\\ \sf\longmapsto \dfrac{35}{100}\times 11

\\ \sf\longmapsto \dfrac{385}{100}

\\ \sf\longmapsto 3.85KJ

\\ \sf\longmapsto 3850J

6 0
3 years ago
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