Answer:
a) q = 2800 W/m²
b) To = 59.4°C
Explanation:
Given the following parameters:
L = 10 mm
K = 20 W/m·K
T = 30°C
h = 100 W/m²K
Ti = 58°C
a)
Calculating heat flux q:
q = h ΔT
q = 100 x (58 - 30)
q = 2800 W/m²
b)
According to Fourier's law, heat transfer is defined as:
Q = K A ΔT/L
Assuming the outer temperature is To:
To = Ti + qL/K
Substituting the given values:
To = Ti + qL/K
To = 59.4°C
Answer:
The kinetic energy is higher for the first cart.
Explanation:
For the second cart, its mass is 2kg and the momentum measured is 10kg m/s, which leads to
resulting in
.
Consequently, the kinetic energy for the 3kg cart ends up as
indicating it is less than that of the 1kg cart so it follows that the first cart possesses greater kinetic energy.
Answer:
Explanation:
Given,
Voltage of the primary coil (V_p) = 30 kV-rms
Voltage of the secondary coils (V_s) = 345 kV-rms
number of turns in the primary coil (n_p) = 80 turns
number of turns in the secondary coil (n_s) =?
the ratio of turns between primary and secondary coils
The number of turns in the secondary coil is equal to
Respuesta:
El cambio de temperatura en Celsius equivale a 46°C.
El cambio de temperatura en Fahrenheit equivale a 82.8°F.
Explicación:
Un grado Celsius es equivalente a un grado Kelvin; por lo tanto,
Un grado Fahrenheit es 1.8 veces un grado Celsius; por lo tanto
Por lo tanto, el cambio en Celsius es de 46°C y en Fahrenheit es de 82.8°F.