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kipiarov [429]
2 years ago
15

Three energy changes that result in movements accuring in your body as sit down reading book?

Physics
1 answer:
Rom4ik [11]2 years ago
8 0
Gravitational to Kinetic to Chemical
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Two boats start together and race across a 48-km-wide lake and back. boat a goes across at 48 km/h and returns at 48 km/h. boat
jolli1 [7]

Answer:

Time required by boat 1 for the round trip is less than that of boat 2.

Hence, boat 1 wins.

Explanation:

Case 1: Boat 1

Speed of boat = \frac{distance of river}{time}

time = \frac{distance of river}{speed of boat}

While going to another end

time = \frac{distance of river}{speed of boat}

time = \frac{48}{48}

time = 1 hour

While going back,

time = \frac{distance of river}{speed of boat}

time = \frac{48}{48}

time = 1 hour

Total time taken by boat 1 is,

Total time by boat 1 = 1 hour + 1 hour = 2 hour

Total time by boat 1 = 2 hour

Total time taken by boat 1 for the round trip is 2 hour.

Case 2: Boat 2

Speed of boat = \frac{distance of river}{time}

time = \frac{distance of river}{speed of boat}

While going to another end

time = \frac{distance of river}{speed of boat}

time = \frac{48}{24}

time = 2 hour

While going back,

time = \frac{distance of river}{speed of boat}

time = \frac{48}{72}

time = 0.66 hour

Total time taken by boat 2 is,

Total time by boat 1 = 2 hour + 0.66 hour

Total time by boat 1 = 2.66 hour

Total time taken by boat 2 for the round trip is 2.66 hour.

Time required by boat 1 for the round trip is less than that of boat 2.

Hence, boat 1 wins.

5 0
3 years ago
What is the difference between brake horsepower and thrust horsepower?
arlik [135]

1. HP is the output horsepower rating of an engine, while Brake horse power is the input brake horsepower of an engine. ...  Brake horse power is the measurement of an engine's power without any power losses, while HP is  less the power losses Brake horse power

5 0
3 years ago
Light travels at the speed of approximately 3.0 × 108 meters per second. Find the time in minutes required for light to travel f
Solnce55 [7]

Answer:

  t = 8.33 minutes

Explanation:

given,

Speed of Light, v = 3 x 10⁸ m/s

distance between sun to Earth = 1.5 x 10¹¹ m

time taken to reach earth = ?

we know,

Distance = speed x time

t = \dfrac{d}{s}

t = \dfrac{1.5\times 10^{11}}{3\times 10^8}

      t = 500 s

1 min = 60 s

now, t = \dfrac{500}{60}\ minutes

          t = 8.33 minutes

time taken by the light to reach earth is equal to 8.33 minutes.

3 0
3 years ago
What is the lithosphere
hoa [83]

Answer:

the rigid outer part of the earth, consisting of the crust and upper mantle.

Explanation:

8 0
3 years ago
Read 2 more answers
Which of the following is not a state of matter?
zzz [600]

Water doesn't belong on that list.

If it's removed, then there's a space to add GAS, which does belong.

8 0
3 years ago
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