Login
Remember
Register
EasyElimu Questions and Answers
Questions
Unanswered
Tags
Users
Ask a Question
Ask a Question
An immersion heater rated 4000W is used continuously for 1hour 30 minutes. Calculate the cost of operation at Ksh.6.70 per unit.
0
votes
210
views
asked
Jul 13, 2021
in
Physics Form 3
by
anony mous
An immersion heater rated 4000W is used continuously for 1hour 30 minutes. Calculate the cost of operation at Ksh.6.70 per unit.
heating effect of electric current
Please
log in
or
register
to answer this question.
1
Answer
0
votes
answered
Jul 13, 2021
by
anony mous
4000w=4Kw × 1.5hrs × 6.70
=ksh.40.20
Please
log in
or
register
to add a comment.
Related questions
0
votes
1
answer
Figure 14 shows a setup that can be used to determine the specific latent heat of vaporisation of water. A beaker containing some water was placed on a weighing balance and an immersion heater rated 500 W immersed in the water.
asked
Jun 21, 2021
in
Physics Form 3
by
anonymous
quantity of heat
0
votes
1
answer
A coffee dealer mixes two brands of coffee, x and y, to obtain 40kg of the mixture worth Ksh. 65 per kg. If brand x is valued at Ksh. 70 per kg and brand y at ks.55 per kg. Calculate the ratio, in its simplest form, in which the brands x and y are mixed
asked
Aug 13, 2021
in
Mathematics Form 1
by
anonymous
ratios
0
votes
1
answer
In order to determine the molar heat of neutralization of potassium hydroxide, 200cm3 of 1M Hydrochloric acid and 200cm3 Of IM Potassium hydroxide both at the same initial temperature were mixed and stirred continuously with a thermometer. The temperature of the resulting solution was recorded after every 30 seconds until the highest temperature of the solution was attained. Thereafter, the temperature of the solution was recorded for a further two minutes.
asked
Jul 8, 2021
in
Chemistry Form 4
by
anony mous
energy changes in chemical and physical processes
endothermic and exothermic reactions
enthalpy
0
votes
1
answer
An electric heater 1000W is used to heat 0.2kg of ice. Initially at -10°C to until all the mass changes to steam at 100°C.
asked
Jul 13, 2021
in
Physics Form 3
by
anony mous
quantity of heat
heat capacity
latent heat of fusion
0
votes
1
answer
A bookseller bought a number of cartons of books at a cost of ksh 57600 from Kagumo bookstore. Had he bought the same books from Kerugoya bookstore, it would have cost him ksh 480 less per carton. This would have enabled him to buy 4 extra cartons of books for the same amount of money. By taking x to be the number of cartons of books he actually bought;
asked
Aug 2, 2021
in
Mathematics Form 1
by
anony mous
algebraic expressions
linear equations
Welcome to EasyElimu Questions and Answers, where you can ask questions and receive answers from other members of the community.
Categories
All categories
Mathematics
(632)
English
(287)
Kiswahili
(559)
Chemistry
(663)
Physics
(604)
Physics Form 1
(307)
Physics Form 2
(129)
Physics Form 3
(91)
Physics Form 4
(76)
Biology
(659)
Geography
(537)
History
(568)
CRE
(365)
IRE
(53)
Agriculture
(519)
Business Studies
(379)
Computer Studies
(20)
Home Science
(60)
General Questions
(432)
6.4k
questions
9.6k
answers
6
comments
590
users
...