The answer should be 5 it’s easy
Answer:
- the Thevenin equivalent circuit for the battery is uploaded below
- the battery delivered 117 watts of power to the starter motor
Explanation:
Given the data in the equation
diagram of the Thevenin equivalent circuit for the battery is uploaded below.
Current I = 10 A
Voltage 1 = 12 V
voltage 2 = 11.7 v
R = (V1 - V2) / I
R = (12-11.7)/10
R = 0.3 / 10
R = 0.03Ω
Thevenin equivalent circuit
= V2 / I = 11.7 / 10
= 1.17Ω
so, power delivered to the starter motor will be;
p = (V2)² / 
P = ( 11.7 V )² / 1.17Ω
p = 136.89 / 1.17
p = 117 watts
Therefore, the battery delivered 117 watts of power to the starter motor
Little Red will arrive at her grandmother's house at 5 PM :)
30/10 = 3
2 + 3 = 5
Q = mcθ
Where Q = Amount of heat in J
m = Mass of substance in kg
θ = Temperature rise in °C or K
C = Specific heat capacity in J/kgK
From given data:
Q = 33 kJ = 33 000 J, m= 2.0 kg, θ = 80 K, c = ?
33000 = 2 * c * 80
33000 = 160c
160c = 33000
c = 33000/160 = 206.25
Therefore specific heat capacity is 206.25 J/kgK
Its simple division
200/5=40s
it will take 40s