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Anastaziya [24]
3 years ago
14

On Pluto, a baby would weigh 2.7 newtons. How much does this baby weigh on Earth? Give your answer in

Physics
1 answer:
Klio2033 [76]3 years ago
3 0
The acceleration of gravity on Pluto is 0.62 m/s² .
The acceleration of gravity on Earth is 9.81 m/s² .

Earth's gravity is  (9.81/0.62) = 15.8 times as strong as Pluto's gravity.

So any object that weighs 2.7N on Pluto would weigh

                                (2.7N) x (15.8) = 42.7 N on Earth .

42.7 Newtons  =  about  9.6 pounds .
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Usimov [2.4K]

add the river's velocity to the boat's velocity

5+ 5 = 10 km/h

Hope this helps!

5 0
4 years ago
The continuous flow of electrons is called ___________.
Brilliant_brown [7]
D. electrical current
4 0
3 years ago
Hot air balloon with a kinetic energy of 76550J and a mass of 1890kg.<br> what’s the velocity?
lukranit [14]

Answer:

K.E =  \frac{1}{2} m {v}^{2}  \\ 76550 = \frac{1}{2} (1890) {v}^{2} \\  {v}^{2}  =  \frac{76550}{945}  \\  = 81.005 \\ v =  \sqrt{81.005}  \\ v  \approx \: 9m. {sec}^{ - 1}

6 0
3 years ago
A janitor standing on the top floor of a building wishes to determine the depth of the elevator shaft. They drop a rock from res
Bumek [7]

Answer:

Part a)

H = 26.8 m

Part b)

error = 7.18 %

Explanation:

Part a)

As the stone is dropped from height H then time taken by it to hit the floor is given as

t_1 = \sqrt{\frac{2H}{g}}

now the sound will come back to the observer in the time

t_2 = \frac{H}{v}

so we will have

t_1 + t_2 = 2.42

\sqrt{\frac{2H}{g}} + \frac{H}{v} = 2.42

so we have

\sqrt{\frac{2H}{9.81}} + \frac{H}{336} = 2.42

solve above equation for H

H = 26.8 m

Part b)

If sound reflection part is ignored then in that case

H = \frac{1}{2}gt^2

H = \frac{1}{2}(9.81)(2.42^2)

H = 28.7 m

so here percentage error in height calculation is given as

percentage = \frac{28.7 - 26.8}{26.8} \times 100

percentage = 7.18

5 0
3 years ago
You will measure and record the time it takes the cart to travel certain distances, and then complete some calculations. In the
natka813 [3]

Answer:

Take the measurement of the distance (d) with a meter rule (in meters) and also measure the time (t) of the travel in seconds with a stopwatch.

question: What is the speed of the cart?

Explanation:

The speed of an object in motion is the distance covered by the object with respect to time, that is, the ratio of distance covered to the time taken to reach that distance.

Speed = distance / time

           = d (in meters m) / t (in seconds s) = m/s

6 0
3 years ago
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