Insulating a home costs £2000 and saves £50 a year. What is the payback time?

40 years.

Answered by Leo T. Physics tutor

3156 Views

See similar Physics GCSE tutors

Related Physics GCSE answers

All answers ▸

In an isolated container contains 1kg of ice at 0 oC. 1kg of warm water (323K) is poured into the container. How much ice (in kgs) remains after the system returns to thermal equilibrium? (by the end of the process?)


What is are elastic and inelastic collisions?


Two students are provided with a starting pistol, a stopwatch and a long measuring tape. The starting pistol produces a loud sound and a puff of smoke. Describe how the students use the apparatus to calculate the speed of sound.


A hair dryer uses 2000J in 5 seconds when on full power. The power used is?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences