The efficiency of the appliance is 0.62 (62%)
Explanation:
The relationship between the power of the appliance and the energy used by it is
where
P is the power
E is the energy transferred in input
t is the time elapsed
For this appliance,
P = 7 W
So, in t = 42 s, the energy transferred in input is
We are told that the useful energy in output however is
Therefore, the efficiency of the appliance is
Learn more about power:
brainly.com/question/7956557
#LearnwithBrainly
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
sustituyendo tenemos
Cruz multiplicar tenemos
Temperatura delle braci 20.3°C
Let's first convert the initial and final speed of the vehicle in m/s:
Therefore, the acceleration of the car is given by
And so now we can calculate the force required by using Newton's second law:
Gasoline fuel is a renewable alternative to petroleum fuels that is made through either biologically or chemically driven production in a process called gasification.