Какие вы знаете видоизменения листьев - №21404320

Какие вы знаете видоизменения листьев
- Предмет:
  Биология
- Автор:
  cheyennei7kw
- 6 лет назад

Ответы 1

колючки,усики,хвоинки, чешуйки,хищные листья,листовые почки, возможно это
- Автор:
  benjamínhughes
- 6 лет назад
- 0
Добавить свой ответ

Еще вопросы

Помогите правильно перевести текст! и ответить на вопросы

ALTERNATING CURRENT
Current is defined as increment of electrons. The unit for measuring
current was named in honor of A.M. Ampere, the French physicist.
Thus it is called ampere. The symbol for current is I. The electric
current is a quantity of electrons flowing in a circuit per second of
time. The electrons move along the circuit because the e.m.f. drives
them. The current is directly proportional to the e.m.f.
A steam of electrons in a circuit will develop a magnetic field
around the conductor along which the electrons are moving.
The strength of the magnetic field depends upon the current strength
along the conductor. The direction of the field is dependant upon the
direction of the current.
If the force causing the electron flow is indirect, the current is
called direct (d.c.). If the force changes its direction periodically the
current is called alternative (a.c.).
Alternating current is the current that changes direction periodically.
The electrons leave one terminal of the power supply, flow out along
the conductor, stop, and then flow back toward the same terminal.
168
A voltage that caused current reverses its polarity periodically. This is
properly called an alternating voltage. The power supply that provides
the alternating voltage actually reverses the polarity of its terminals
according to a fixed periodic pattern. A given terminal will be negative
for a specific period of time and drive electrons out through the circuit.
Then, the same terminal becomes positive and attracts electrons back
from the circuit. This voltage source cannot be a battery. It must consist
of some types of rotating machinery = 1300.
electrotech@v-itc.ru

Answer the questions:
1. Why do electrons move along the circuit?
2. What does the strength of the magnetic field depend upon?
3. What is alternating current?
4. What is an alternating voltage?
- Предмет:
  Английский язык
- Автор:
  ava5
- 6 лет назад
- Ответов:
  
  1
- Смотреть
как по англ. будет холодное сердце
- Предмет:
  Английский язык
- Автор:
  lillianna
- 6 лет назад
- Ответов:
  
  1
- Смотреть
Каким путем и почему началось объединение Германии? Какую роль в этом процессе сыграл Бисмарк?
- Предмет:
  История
- Автор:
  callumg9fq
- 6 лет назад
- Ответов:
  
  1
- Смотреть
столбиком 533 368 000 на 83600. Плиз!! Срочно!!
- Предмет:
  Математика
- Автор:
  kate79
- 6 лет назад
- Ответов:
  
  2
- Смотреть

How much to ban the user?

1 hour 1 day 100 years