1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DanielleElmas [232]
2 years ago
12

Một học sinh làm thí nghiệm sóng dừng trên dây cao su dài L với hai đầu A và B cố định . Xét điểm M trên dây sao cho khi sợi dây

duỗi thẳng thì M cách B một khoảng a < L/2 . Khi tần số sóng là f = f1 = 60 Hz thì trên dây có sóng dừng và lúc này M là một điểm bụng . Tiếp tục tăng dần tần số thì lần tiếp theo có sóng dừng ứng với f = f2=72 Hz và lúc này M không phải là điểm bụng cũng không phải điểm nút . Thay đổi tần số trong phạm vi từ 73 Hz đến 180 Hz , người ta nhận thấy với f = fo thì trên dây có sóng dừng và lúc này M là điểm nút . Lúc đó , tính từ B ( không tính nút tại B ) thì M có thể là nút thứ ?
Physics
1 answer:
tatyana61 [14]2 years ago
8 0
Have suxhebeuxhsbendixbebendue bride. Did e did e end Rudd. R
You might be interested in
1. ________________electricity is the type of electricity commonly used in homes and businesses throughout the world.
amid [387]
Number 1 is letter A
3 0
3 years ago
PLEASE HELP ME I AM TIMED!
cupoosta [38]
I believe the answer is D
3 0
2 years ago
Which has more thermal energy 1 g if aluminum or 1 g of gold and why
bagirrra123 [75]

gold because it has highest boiling point so it can conduct the heat

8 0
2 years ago
I need help with this
fredd [130]
We have here what is known as parallel combination of resistors.

Using the relation:

\frac{1}{ r_{eff} } = \frac{1}{ r_{1} } + \frac{1}{ r_{2} } + \frac{1}{ r_{3} }.. . + \frac{1}{ r_{n} } \\
And then we can turn take the inverse to get the effective resistance.

Where r is the magnitude of the resistance offered by each resistor.

In this case we have,
(every term has an mho in the end)
\frac{1}{10000} + \frac{1}{2000} + \frac{1}{1000} \\ \\ = \frac{1}{1000} ( \frac{1}{10} + \frac{1}{2} + \frac{1}{1} ) \\ \\ = \frac{1}{1000} ( \frac{31}{20}) \\ \\ = \frac{31}{20000}

To ger effective resistance take the inverse:
we get,
\frac{20000}{31} \: ohm \\ = 645 .16 \: ohm

The potential difference is of 9V.

So the current flowing using ohm's law,

V = IR

will be, 0.0139 Amperes.
7 0
3 years ago
Can somebody google or pls if u know the correct answer help!!!
love history [14]

Answer:

Nutrients

Oxygen

Water

Stable body temperature

Atmospheric pressure

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • What relation does the boiling point of an amine have to a similar hydrocarbon?
    14·2 answers
  • While traveling south on an expressway, a car traveling 60 mph (miles per hour) slows down to 30 mph in 12 minutes due to traffi
    12·1 answer
  • a 2.0 kg block slides on the horizontal, frictionless surface until it counters a spring force constant with
    5·1 answer
  • Which visible quality of smoke shows that it contains a lot of gas influencing the other particles?
    13·2 answers
  • Which of two factors influence the weight of an object due to gravitational pull?
    13·2 answers
  • a merry go round has a radius of 8 meters makes 2 revolutions every 2.5 minutes. A. express the angular speed of the merry go ar
    7·1 answer
  • What is Newton's universal law of gravitation
    10·1 answer
  • Cindy pours cool milk into a hot bowl of oatmeal and then stirs it with a room-temperature spoon. Which substance will have heat
    10·1 answer
  • Rooms are fitted with ventilators to let the air move around. The phenomenon involved is:
    6·2 answers
  • Two girls are standing on a rollerskates holding a basketball. One girl throws the ball to the other. Explain what happens to th
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!