Предмет: Физика, автор: misstika03

Накачка рубинового лазера ,используемого в хирургии сетчатки
осуществляется в течение 1 мин газоразрядной лампой 15 Вт световой кпд 25 % .
Продолжительность вспышки лазера 0,1 мс. Какова мощность вспышки,если кпд
лазера 1,5%?

Ответы

Автор ответа: Аноним
0
A=Q=N*t*КПД=15 Вт * 60 сек * 0,25=225 Дж

N=(A / t) * КПД= (225 Дж / 0,1 сек * 10^-3) * 0,015 = 33750 Вт
Ответ: 33750 Вт
Похожие вопросы
Предмет: Английский язык, автор: IIICMETAHAIII
ПОМОГИТЕ ПОЖАЛУЙСТА! СРОЧНО!
1. I knew by the expression on their faces
that they ……………………about me. TALK
Укажите правильный вариант ответа:
a) had talked
b) had been talking

2. When the hunters arrived he ………… already ………… the animal. KILL
Укажите правильный вариант ответа:
a) had ........... been killing
b) had ............... killed

3. Yesterday he was very tired
because he ……………………all day. DIG
Укажите правильный вариант ответа:
a) had dug
b) had been digging

4. When the police arrived the thief …………………… ESCAPE
and there was nobody around.
Укажите правильный вариант ответа:
a) had escaped
b) had been escaping

5. I knew she …………………… the washing DO
because the machine was still working when I got in.
Укажите правильный вариант ответа:
a) had been doing
b) had done

6. - I knew you …………………… . PAINT
- How do you know?
- Your hands were covered with paint!
Укажите правильный вариант ответа:
a) had been painting
b) had painted

7. He said he …………………… to be attacked by a polar bear. NOT EXPECT
Укажите правильный вариант ответа:
a) hadn't been expecting
b) hadn't expected

8. You were out of breath when I met you yesterday. ………you ………………? JOG
Укажите правильный вариант ответа:
a) had you been jogging?
b) had you jogged?

9. She …………………… English for 5 years STUDY
before she visited Canada.
Укажите правильный вариант ответа:
a) had been studying
b) had studied

10. By 10 o'clock the kids …………………… their homework DO
and were ready to go out.
Укажите правильный вариант ответа:
a) had done
b) had been doing

11. I ………… just …………… writing a letter FINISH
when the door bell rang.
Укажите правильный вариант ответа:
a) had finished
b) had been finishing

12. The children …………………… their homework DO
and by 10 o'clock they still …………………… it. NOT FINISH
Укажите правильный вариант ответа:
a) had done, hadn't finished
b) had been doing, hadn't finished

13. We …………………… all day for the party COOK
and by 7 o'clock we still weren't ready.
Укажите правильный вариант ответа:
a) had cooked
b) had been cooking
Предмет: Математика, автор: 96baks9699
Предмет: Геометрия, автор: yulichka9721