# Physics

A microwave rated at 1000 W heats a 500 g glass of water from 10 degrees C to 55 degrees C in 2 minutes. Determine the efficiency of the energy transformation.

1. 👍 0
2. 👎 0
3. 👁 178

## Similar Questions

1. ### chemistry

A microwave oven heats by radiating food with microwave radiation which is absorbed by the food and converted to heat. Suppose an oven's radiation wavelength is 12.5 cm. A container with 0.250 liter of water was placed in the oven

asked by jimmercarbone on October 31, 2012
2. ### chemistry

A microwave oven heats by radiating food with microwave radiation which is absorbed by the food and converted to heat. Suppose an oven's radiation wavelength is 12.5 cm. A container with 0.250 liter of water was placed in the oven

asked by jimmercarbone on October 31, 2012
3. ### chemistry

You drop a hot copper penny (500 degrees celsius) that has a mass of 4.5 grams into a glass of cold water (6.0 degrees celsius) with a volume of 120 mL. The water heats up to 7.7 degrees celsius. Find the heat absorbed by the

asked by billy bob j on April 20, 2008
4. ### CHEMISTRY

I don't even understand how this question works. How do I solve it? A microwave oven heats by radiating food with microwave radiation, which is absorbed by the food and converted to heat. suppose an oven's microwave is 13.7 cm. a

asked by Jake on October 31, 2007
5. ### chemistry

A microwave oven heats by radiating food with microwave radiation, which is absorbed by the food and converted to heat. Suppose an oven's radiation wavelength is 12.5 cm. A container with 200 mL of water was placed in the oven and

asked by Katie on October 23, 2013
6. ### AP Environmental Science

Consider the following heats, copper: 0.384J/g degrees, glass:0.502J/g degrees, water: 4.18J/g degrees, and lead:0.159J/g. Which substance once warmed, would be more likely to maintain its heat and keep you warm through a long

asked by Becca on October 10, 2012
7. ### chemistry

Microwaves are used to heat food in microwave ovens. The microwave radiation is absorbed by moisture in the food. This heats the water, and as the water becomes hot, so does the food. How many photons having a wavelength of 3.00

asked by Carson on November 13, 2012
8. ### Chemistry

Microwaves are used to heat food in microwave ovens. The microwave radiation is absorbed by moisture in the food. This heats the water, and as the water becomes hot, so does the food. How many photons having a wavelength of 3.00

asked by Luke on June 29, 2014
9. ### Math

one Percentage increase / decrease formula in excel that full all the conditions that are mentioned below 2012 2011 1 0 0 2 0 500 3 500 0 4 500 1000 5 1000 500 6 500 (1000) 7 (1000) 500 8 (500) (1000) 9 (1000) (500) Dear its