Answer:
19.98Joules
Explanation:
Energy possessed by the body is the kinetic energy
Kinetic Energy = 1/2mv²
m is the mass
v is the velocity
For the 4kg moving at 6m/s
kE = 1/2 * 4 * 6^2
KE = 1/2 * 4 * 36
KE = 72Joules
For the 4kg moving at 5.1m/s
kE = 1/2 * 4 * 5.1^2
KE = 1/2 * 4 *26.01
KE = 52.02Joules
Amount of Energy lost = 72 - 52.02
Amount of Energy lost = 19.98Joules
Hence the amount of Energy lost is 19.98Joules
Responder:
20.3 ° C
Explicación:
<u>Según la ley de Charles</u>: <em>cuando la presión sobre una muestra de gas seco se mantiene constante, la temperatura y el volumen estarán en proporción directa.
</em>
Paso uno:
datos dados
Temperatura T1 = 20 ° C
Temperatura T2 =?
Volumen V1 = 12.2 cm ^ 3
Volumen V2 = 12.4 cm ^ 3
Aplicar la relación temperatura y volumen
![\frac {V_{1}}{T_{1}}=\frac {V_{2}}{T_{2}}](https://tex.z-dn.net/?f=%5Cfrac%20%7BV_%7B1%7D%7D%7BT_%7B1%7D%7D%3D%5Cfrac%20%7BV_%7B2%7D%7D%7BT_%7B2%7D%7D)
sustituyendo tenemos
![\frac {12.2}{20}=\frac {12.4}{T_{2}}\\\\](https://tex.z-dn.net/?f=%5Cfrac%20%7B12.2%7D%7B20%7D%3D%5Cfrac%20%7B12.4%7D%7BT_%7B2%7D%7D%5C%5C%5C%5C)
Cruz multiplicar tenemos
![T_2=\frac{20*12.4}{12.2} \\\\T_2=\frac{248}{12.2}\\\\T_2=20.3](https://tex.z-dn.net/?f=T_2%3D%5Cfrac%7B20%2A12.4%7D%7B12.2%7D%20%5C%5C%5C%5CT_2%3D%5Cfrac%7B248%7D%7B12.2%7D%5C%5C%5C%5CT_2%3D20.3)
Temperatura delle braci 20.3°C
The experiments will involve two billiard balls of known masses, m₁ and m₂, and velocities u₁ and u₂. The two are allowed to collide and the velocities of the balls after the collision v₁ and v₂ are recorded.
The momentum before and after the collision is then calculated as follows:
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
<h3>What is the statement of the law of conservation of momentum?</h3>
The law of the conservation of momentum states that the momentum before and after collision in a system of colliding bodies is conserved
The momentum of a body is calculated using the formula below:
Momentum = mass * velocity.
Hence, for the two billiard balls, the momentum before and after the collision is conserved.
Learn more about momentum at: brainly.com/question/1042017
#SPJ1
120/6=20 ohms :) would be the ans
Answer:
![Velocity = \frac{s(8)}{8}](https://tex.z-dn.net/?f=Velocity%20%3D%20%5Cfrac%7Bs%288%29%7D%7B8%7D)
Explanation:
Given
![0 \leq t \leq 12](https://tex.z-dn.net/?f=0%20%5Cleq%20t%20%5Cleq%2012)
Required
Determine the velocity when t = 8
This type of velocity is referred to as an instantaneous velocity.
In this case, it is calculated using
![Velocity = \frac{Distance\ at\ 8 second}{t = 8}](https://tex.z-dn.net/?f=Velocity%20%3D%20%5Cfrac%7BDistance%5C%20at%5C%208%20second%7D%7Bt%20%3D%208%7D)
Given that s(t) models the distance;
s(8) = distance at 8 seconds
So;
![Velocity = \frac{s(8)}{8}](https://tex.z-dn.net/?f=Velocity%20%3D%20%5Cfrac%7Bs%288%29%7D%7B8%7D)
Option B answers the question