We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website.
Please click on "Accept cookies" if you agree to the setting of cookies. Cookies that do not require consent remain unaffected by this, see
cookie policy and privacy policy.
DECLINE COOKIES

The sun generates power at approx. 1kjs^{-1}. A solar cooker is a dome-like parabolic mirror that can reflect and focus the light falling on it to one point and is used as a sustainable way of cooking that uses no fuel. If a solar cooker has an area of 1m, how long will it take to boil 1litre=(1kg) of water fom anambient temperature of 20C. Specific heat capacity of water= 4190jKg^{-1}C^{-1.}

Guest Nov 1, 2015

#1**0 **

In your Physics Book, there must a formula relating the area of something(parabloic mirror here) to the flux of solar energy and to the "specific heat capacity" of a substance. Use that formula and substitute all the variables that you have and you will get your answer. Unfortunately, most of the people here are not physicists, and have forgotten most of the obsecure formulas in physics, which they may not have used for 10, 20 or even 30 years!!.

Guest Nov 1, 2015