Batteries are rated in terms of ampere-hours (a·h). for example, a battery that can produce a current of 2.00 a for 3.00 h is rated at 6.00 a·h.

(a) what is the total energy stored in a 9.0 v battery rated at 47.0 a·h?

(b) at $0.0660 per kilowatt-hour, what is the value of the electricity produced by this battery? note: enter your response with hundredths precision.

(a) 423 J

The power of the battery is the ratio between the total energy stored (E) and the time elapsed (t):

However, the power is also the product of the voltage (V) and the current (I):

Linking the two equations together,

Since we know:

V = 9.0 V

We can calculate the total energy:

(b) dollars

The battery has a total energy of E = 423 J. (2)

1 Watt (W) is equal to 1 Joule (J) per second (s):

so 1 kW corresponds to 1000 J/s:

Multiplying both side by 1 hour (1 h):

and , so

So we find the conversion between kWh and Joules. So now we can convert the energy from Joules (2) into kWh:

And since the cost is $0.0660 per kilowatt-hour, the total cost will be

dollars

hi there!

your question asks at which segment does freezing occur.

since we're talking about water, the freezing point of water will be 32 degrees fahrenheit or below.

hope this ! ~

heat the gas and measure the pressure