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Artist 52 [7]
3 years ago
6

Is energy conserved when a ball falls to the ground

Physics
1 answer:
fredd [130]3 years ago
4 0
Of course. You've certainly heard that energy is conserved, period. Why would you think it's different when a ball falls to the ground ? ?
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True or false that humans emit light?
krok68 [10]

I'm pretty sure it's true. We glow with "Bioluminescence".

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3 years ago
A ball of mass 0.190 kg has a velocity of 1.50 i m/s; a ball of mass 0.305 kg has a velocity of -0.401 i m/s.They meet in a head
Mice21 [21]

Answer:

<h3>0.329m/s</h3>

Explanation:

According to law of conservation of momentum, the momentum of the object before collision is equal to that of the object after collision. Using the formula

m1u1 + m2u2 = (m1+m2)v

m1 and m2 are the masses of the object

u1 and u2 are the respective initial velocities

v is the final velocity

Given

m1 = 0.190kg

u1 = 1.5m/s

m2 = 0.305kg

u2 = -0.401m/s

Substitute

0.19(1.5)+(0.305)(-0.401) = (0.19+0.305)v

0.285 - 0.122305 = 0.495v

0.162695 = 0.495v

v = 0.162695 /0.495

v = 0.329m/s

<em>Hence their velocities after collision is 0.329m/s in the positive x direction</em>

<em></em>

8 0
3 years ago
Un recipiente con una capacidad de 25L contiene un gas a una presión de 7,5 atm. Calcula la nueva presión a la que se verá somet
amid [387]

Responder:  

18.75 atmósferas  

Explicación:  

Paso uno:  

datos dados

volumen inicial V1 = 25L

Presión inicial P1 = 7.5 atm

volumen final V2 = 10L

presión final P2 = ??

Segundo paso:

Aplicando la expresión de gas que relaciona el volumen y la presión, es decir

P1V1 = P2V2

sustituyendo nuestros datos tenemos

7.5 * 25 = P2 * 10

187.5 = P2 * 10

divide ambos lados por 10

P2 = 187.5 / 10

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<em><u>La presión final es de 18.75 atm.</u></em>

5 0
3 years ago
How is power related to distance and time?
Monica [59]

There is no direct relationship between power
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4 0
4 years ago
The most likely models of the planet Mercury indicate that more than half the planet may be composed of________.
Oxana [17]

Answer:

iron

Explanation:

4 0
3 years ago
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