Answer:
Q = 2450 KJ/day
Explanation:
We are given;
The amount of moisture produced by a person while taking shower; m = 0.25 kg/person
Total number of persons in the family; N = 4
Latent heat of vaporization of water:
h_fg = 2450 KJ/kg
Since amount of moisture per person is 0.25kg per day,thus for 4 people, total mass; m_total = 4 x 0.25 = 1 kg per day
The formula for the amount of latent heat added to the space due to shower per day, is given as;
Q = m_total x h_fg
Plugging in the relevant values;
Q = 1 x 2450 = 2450 KJ/day
Answer: Number of panels needed is 27
Daily energy per 250 W panel is 1.1kWhr
Daily house energy used is 30kWhr
Explanation: To get 27 panel it is 250*30/1.1 =6818
6818/250= 27 panels needed daily
The current will lag the voltage in AC circuit that contains both resistance and inductance.
Answer: C
Explanation
There is no inductance only circuits in reality.
The circuits containing inductance has also a lower amount of resistance.
The current flows in both resistance and inductance.
There is a drop in the total voltage in resistance and inductance giving rise to the voltage applied in the coil when connected in a series.
An example being inductance coil an AC circuit connected to both resistance and inductance in series.
From the vector diagram, this conclusion can be drawn.
Answer:
The power is 
Explanation:
In order to obtain the power it consumes we need to first obtain the resistance of the hair dryer at 120 V

Now the power supplied in Europe at their voltage of 230V would be

Looking the power obtain we see that it is higher than 1530 W so this would cause the dryer to smoke.