Answer:
Inside the strong metal box, there is a microwave generator called a magnetron. When you start cooking, the magnetron takes electricity from the power outlet and converts it into high-powered, 12cm (4.7 inch) radio waves. Thus the microwaves pass their energy onto the molecules in the food, rapidly heating it up.May 3, 2018
Answer:
225 000 kilometers per second.
Answer:
increase.
Explanation:
as you being your trip dow hill you increase your speed resulting a transformation from GPE to KE.
A paper clip is a example of a thing that has a mass of one gram.
Answer:
Part a)
R = 9.93 ohm
Part b)
P = 2375 W
Explanation:
Part a)
Resistance of the toaster is given as
![R = \frac{V^2}{P}](https://tex.z-dn.net/?f=R%20%3D%20%5Cfrac%7BV%5E2%7D%7BP%7D)
here we know that
P = power of device
V = voltage across the device
now we have
![R = \frac{120^2}{1450} = 9.93 ohm](https://tex.z-dn.net/?f=R%20%3D%20%5Cfrac%7B120%5E2%7D%7B1450%7D%20%3D%209.93%20ohm)
Part b)
when microwave fails and replaced
then here the current flowing in toaster is given as
![i = \frac{P}{V}](https://tex.z-dn.net/?f=i%20%3D%20%5Cfrac%7BP%7D%7BV%7D)
![i = \frac{1450}{120} = 12.1 A](https://tex.z-dn.net/?f=i%20%3D%20%5Cfrac%7B1450%7D%7B120%7D%20%3D%2012.1%20A)
similarly current in the microwave is given as
![i_2 = \frac{923}{120} = 7.7 A](https://tex.z-dn.net/?f=i_2%20%3D%20%5Cfrac%7B923%7D%7B120%7D%20%3D%207.7%20A)
now total current in it is
![i = 12.1 + 7.7 = 19.8 A](https://tex.z-dn.net/?f=i%20%3D%2012.1%20%2B%207.7%20%3D%2019.8%20A)
So power rating is given as
![P = Vi = 120(19.8) = 2375 Watt](https://tex.z-dn.net/?f=P%20%3D%20Vi%20%3D%20120%2819.8%29%20%3D%202375%20Watt)