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docker41 [41]
2 years ago
6

Calcular el volumen de un cubo 36 cm​

Physics
1 answer:
3241004551 [841]2 years ago
8 0

Answer:

vol = 46,566 cm³

Explanation:

calcular el volumen de un cubo 36 cm​

find: volume

let side of a cube = 36 cm

vol = side ³

vol = 36 ³

vol = 46,566 cm³

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Can the kinetic energy of an object be negative? Can the potential energy of an object be negative? Can a potential energy funct
IceJOKER [234]

Answer:

Kinetic energy cannot be negative

potential energy is a reference dependent quantity and it can be positive as well as negative both

Since potential energy is defined only for conservative force so it can not be found for friction force

Explanation:

Kinetic energy of an object is given by the formula

KE = \frac{1}{2}mv^2

here we know that

m = mass of object that can not be negative

v = speed of the object and since its square is given here so it can not be negative

so Kinetic energy is always positive

potential energy is given as the energy due to the virtue of the position of object

so it is

\Delta U = -\int F.dr

so potential energy is a reference dependent quantity and it can be positive as well as negative both

Since potential energy is defined only for conservative force so it can not be found for friction force

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3 years ago
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FromTheMoon [43]
What is it about, I can help.
3 0
3 years ago
The geese fly 23 m/s to the south when they migrate for the winter. Identify if this example is speed or velocity.
kari74 [83]

Answer:

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7 0
2 years ago
70-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 844 N. What is the acceleration o
mario62 [17]

Answer : The acceleration of the elevator is, 2.25m/s^2

Explanation :

Formula used to calculate the acceleration of the elevator is:

F=mg+ma\\\\ma=F-mg\\\\a=\frac{F-mg}{m}

where,

F = force = 844 M

m = mass of man = 70 kg

g = acceleration due to gravity = 9.8m/s^2

a = acceleration of the elevator = ?

Now put all the given values in the above formula, we get:

a=\frac{F-mg}{m}

a=\frac{844N-(70kg\times 9.8m/s^2)}{70kg}

a=2.25m/s^2

Thus, the acceleration of the elevator is, 2.25m/s^2

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2 years ago
Which example shows energy?
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D because u r using your energy to do all the things

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2 years ago
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