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mel-nik [20]
2 years ago
12

Which of the following would produce the most power?

Physics
1 answer:
Fantom [35]2 years ago
6 0

Answer:

A mass of 10 kilograms lifted 10 meters in 5 seconds.

Explanation:

Power can be defined as the energy required to do work per unit time.

Mathematically, it is given by the formula;

Power = \frac {Energy}{time}

But Energy = mgh

Substituting into the equation, we have

Power = \frac {mgh}{time}

Given the following data;

Mass = 10kg

Height = 10m

Time = 5 seconds

We know that acceleration due to gravity is equal to 9.8 m/s²

Power = \frac {10*9.8*10}{5} = 490 Watts

Hence, a mass of 10 kilograms lifted 10 meters in 5 seconds would produce the most power.

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Where is the location potential energy is converted to kinetic energy?<br> Please answer asap!!!!!
kolezko [41]

Potential energy is the energy that is possible to be realized, based on position, while  the kinetic energy is the energy that is present and due to motion

The location where the potential energy is converted into kinetic energy is the point (2)

Reason:

The mechanical energy, M.E., of the roller coaster, is given as follows;

M.E. = P.E. + K.E.

Where;

P.E. = The potential energy = m·g·h

K.E. = The kinetic energy = \dfrac{1}{2} \cdot m \cdot v^2

Where;

v = The velocity

h = The height

m = The mass

g = Acceleration due to gravity

∴ M.E. = m·g·h + \dfrac{1}{2} \cdot m \cdot v^2

The mechanical energy, M.E., is constant, therefore;

When the height, h = 0, we have, the kinetic energy is maximum, given that the mechanical energy is entirely kinetic energy

Therefore;

The locations where potential energy is converted to kinetic energy are lowest locations, where the height, <em>h</em>, is minimum, such as the point (2)

Learn more about potential and kinetic energy here:

brainly.com/question/18963960

7 0
3 years ago
A brave child decides to grab onto an already spinning merry‑go‑round. The child is initially at rest and has a mass of 34.5 kg.
ozzi

Answer:

I_1 = 32.5 kg m^2

Explanation:

Here as we know that total angular momentum is always conserved for child + round system

so here by angular momentum conservation we have

I_1 \omega_1 = (I_1 + I_2)\omega_2

here we have

I_2 = mR^2 (inertia of boy)

I_2 = (34.5)(1.45^2)

I_2 = 72.5 kg m^2

now we have

I_1(2\pi 55) = (I_1 + 72.5)(2 \pi 17)

I_1 = (I_1 + 72.5)(0.31)

I_1(1 - 0.31) = 22.4

I_1 = 32.5 kg m^2

3 0
3 years ago
the human nervous system can propagate nerve impulses at about 10 squared metered per second. estimate the time it takes to trav
rusak2 [61]
Use the formular d = v x t
d = 2m
v= 100m/s

t= d / v
 = 2 / 100
 = 0.02sec
7 0
3 years ago
Read 2 more answers
Which of the following tools is used to observe objects that are very far away? A. a anemometer B. a hand lens C. a microscope D
inn [45]

Answer:

D. a telescope

Explanation:

3 0
3 years ago
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Draw a neat labelled diagram for a particle moving in a circular path with a constant speed. In your diagram show the direction
Naya [18.7K]

Explanation:

Particle moving in a circular path with a constant speed.

3 0
3 years ago
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