Wednesday
July 23, 2014

Homework Help: physics

Posted by Aaron on Tuesday, March 1, 2011 at 4:10pm.

The table shows the power ratings of four electrical appliances.
Fan heater 2 kW
Oven 3 kW
Kettle 2 kW
Microwave oven 0.75 kW

The kettle is used for a total of 30 minutes a day. It has an efficiency of 0.9
What is the cost of the energy wasted by the kettle each day?
1 0.6 p
2 1.0 p
3 6.0 p
4 9.0 p


please can someone post a walkthrough of the answer along with the answer please, Thanks in advance.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

science - On a particular day, the following appliances are used for the times ...
science - On a particular day, the following appliances are used for the times ...
phyical science - On a particular day, the following appliances are used for the...
physics.... - Suppose that the inside length of a microwave oven is 30 cm. If ...
Physics - How long does it take a 1000. W electric kettle to bring 1.0L of water...
College Physics II - A typical gamma ray emitted from a nucleus during ...
CHEMISTRY - I don't even understand how this question works. How do I solve it? ...
Chemistry - A particular microwave oven delivers 800 watts. (A watt is a unit of...
Physics - The temperature in an electric oven is 160C. The temperature at the ...
nsu - A microwave oven has a power requirement of 1256 W. A frozen dinner ...

Search
Members