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
sveticcg [70]
3 years ago
13

Thiết kế mạch điện tử sử dụng chân ngõ ra (I/O) của arduino UNO để lái relay 12VDC/500mA sao cho chân Arduino xuất ra tín hiệu 5

V thì relay đóng, ngược lại chân I/O arduino xuất tín hiệu 0V thì relay hở. Mạch lái dùng BJT
Physics
1 answer:
myrzilka [38]3 years ago
6 0

Answer:

Mình cũng không biết làm bạn ơi =)))

Explanation:

You might be interested in
How are length and volume alike
SIZIF [17.4K]

You used lengths to calculate the volume.length is considered one dimensional.while volume is considered 3 dimensional.you used 3 individual dimensions their numerical lengths to find volumes of three dimensional figures.

3 0
4 years ago
Read 2 more answers
A 2.5-kg book slides horizontally and falls from a shelf 3.0 m above the floor. How much work does the force of gravity do on th
frutty [35]

Answer:

73.5 N

Explanation:

W = PE = mgh = 2.5 * 9.8 * 3.0 = 73.5 N

7 0
3 years ago
According to the periodic table, how many electrons does gallium (#31) have in its valence level?
Dmitrij [34]

Answer:

Three valence electrons

7 0
3 years ago
A uniform solid ball rolls smoothly along a floor, then up a ramp inclined at 33.0°. It momentarily stops when it has rolled 1.7
galben [10]

Answer:

v = 3.6 m/s

Explanation:

given,

Inclination of the ramp, θ = 33⁰

Distance of the rope, d = 1.70 m

initial speed = ?

using conservation of energy

\dfrac{1}{2}mv^2 + \dfrac{1}{2}I_{com}\omega^2 = m g h

h = d sinθ  

h = 1.7 x sin 33° = 0.926 m

moment of inertia of the solid ball

I_{com}= \dfrac{2}{5}MR^2  

we know, v = r ω

\dfrac{1}{2}mv^2 + \dfrac{1}{2}\dfrac{2}{5}mR^2\times \dfrac{v^2}{R^2}= m g h

\dfrac{1}{2}mv^2 + \dfrac{1}{5}mv^2 = mgh

gh= \dfrac{7}{10}v^2

v = \sqrt{\dfrac{10}{7}gh}

v = \sqrt{\dfrac{10}{7}\times 9.8\times 0.926}

v = 3.6 m/s

Hence, initial speed of the solid ball = 3.6 m/s

8 0
3 years ago
What happens when the Earth’s plates pull away from each other?
yan [13]
Volcanoes start to erupt because of the magnetic field.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which structure is represented by the letter D? Choose 1 answer: (Choice A) A Chloroplast (Choice B) B Vacuole (Choice C) C Mito
    9·1 answer
  • Which of the following is a physical property of wood
    10·2 answers
  • Statement A: Area of a rectangle with measured length = 2.536 m and width = 1.4 m. Statement B: Area of a rectangle with measure
    5·1 answer
  • A mule pulls a cart of milk 10 meters with a force of 50 Newton's.Calculate the work done by a mule
    5·2 answers
  • Give two disadvantage of hydroelectric power​
    7·2 answers
  • Which of the following is the most dense?
    10·1 answer
  • How can you make an item that is made of magnetic material become a permanent magnet instead of a temporary magnet?
    7·2 answers
  • What are the four major tasks of the digestive system?
    8·1 answer
  • You take the mass of the object 400 grams then what do you predict the force needed to move the object at a constant acceleratio
    14·1 answer
  • All vibrating bodies produce sounds are we able to hear all the sounds explain​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!