![subject](/tpl/images/cats/User.png)
Engineering, 18.01.2021 14:00 tony7135
An LED camping headlamp can run for 18 hours, powered by three AAA batteries. The batteries each have a capacity of 1000 mAh, and a terminal voltage of 1.5 V, which you can assume to be constant over the full discharge range. The batteries are connected in series, so that the total battery pack voltage is the sum of the individual cell voltages.
a. What is the power consumption of the LEDs?
b. How much current do the LEDs draw?
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:20
What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.
Answers: 3
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:20
Air flows over a heated plate à t a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
Answers: 1
You know the right answer?
An LED camping headlamp can run for 18 hours, powered by three AAA batteries. The batteries each hav...
Questions
![question](/tpl/images/cats/fizika.png)
Physics, 13.09.2021 17:50
![question](/tpl/images/cats/en.png)
English, 13.09.2021 17:50
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2021 17:50
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2021 17:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2021 17:50
![question](/tpl/images/cats/mkx.png)
Arts, 13.09.2021 17:50
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2021 17:50
![question](/tpl/images/cats/en.png)
English, 13.09.2021 17:50
![question](/tpl/images/cats/mkx.png)
Arts, 13.09.2021 17:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 13.09.2021 17:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 13.09.2021 17:50
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2021 17:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/es.png)
Spanish, 13.09.2021 17:50