Answer:
The mass of water that will evaporate 2.857 kg.
Explanation:
Given;
temperature of the water, T = 100 c
rate of heat transfer, H = 2 kW = 2000 w
time, t = 10 min = 10 min x 60s = 600s
heat capacity of water is given by;
Q = McΔT
Where;
Q is the quantity of heat transfer to the pan = P x t = 2000 x 600 = 1200000 J.
c is specific heat capacity of water = 4200 J/kg.°C
m = (Q) / (cΔT)
m = (1200000) (4200 x 100)
m = 2.857 kg
Therefore, the mass of water that will evaporate 2.857 kg.
Answer:
Revisar las respuestas a cada problema, como se muestra mas adelante.
Explanation:
Para poder solucionar esta serie de problemas debemos de utilizar la segunda ley de Newton, la cual nos dice que la sumatoria de fuerzas sobre un cuerpo debe de ser igual producto de la masa por la aceleracion.
De esta manera tenemos:
ΣF = m*a
donde:
F = fuerza [N]
m = masa [kg]
a = aceleracion [m/s^2]
1 )
F = m*a
60 = m*4
m = 15[kg]
2)
F = m*a
a = 250/50
a = 5 [m/s^2]
3)
F = m*a
F = 80*2.5
F = 200 [N]
4)
F = m*a
800 = 1500*a
a = 0.533[m/s^2]
5)
F = m*a
100 = 500*a
a = 100/500
a = 0.2 [m/s^2]
Answer:
Explanation:
The formula for linear expansivity, 
original length, l₁ = 123 cm = 1.23 m
final length, l₁ = 92.6 cm =0.926 m
original temperature, θ₁ = 200°C
Linear expansivity, α = 2 * 10⁻⁵ °C⁻¹
Putting these values into the formula:
Answer:
<u>A.</u>
Explanation:
A sedentary lifestyle is someone that does not participate in physical activities. Leslie is not active and plays video games instead.
One is the best choice for an answer.
