Answer:
Quantity of heat needed (Q) = 722.753 × 10³
Step-by-step explanation:
According to question,
Mass of water (m) = 40 kg
Change in temperature ( ΔT) = 18°c
specific heat capacity of water = 4200 j kg^-1 k^-1
The specific heat capacity is the amount of heat required to change the temperature of 1 kg of substance to 1 degree celcius or 1 kelvin .
So, Heat (Q) = m×s×ΔT
Or, Q = 40 kg × 4200 × 18
or, Q = 3024 × 10³ joule
Hence, Quantity of heat needed (Q) = 3024 × 10³ joule
In calories 4.184 joule = 1 calorie
So, 3024 × 10³ joule = 722.753 × 10³
Answer
B)
Step by step explanation
The standard form of circle when center(h, k) and radius r, given is
(x - h)^2 + (y - k)^2 = r^2
Given: (h, k) = (5, 0) and r = 3
Now plug in these values in the standard form, we get
(x - 5)^2 + (y - 0)^2 = 3^2
Therefore, the answer is B) 
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Answer:
el nuevo salario es 4680
Step-by-step explanation:
Dado
Salario = 4.500
Incremento = 4%
Necesario
Determinar el nuevo salario
El nuevo salario se calcula utilizando lo siguiente:
Nuevo salario = salario anterior + 4% * salario anterior
Nuevo salario = 4500 + 4% * 4500
Nuevo salario = 4500 + 180
Nuevo salario = 4680
Por lo tanto, el nuevo salario es 4680
Answer:
3 kg= 14.7
6 kg= 29.4
9 kg= 44.1
Step-by-step explanation:
just answered it
