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
fomenos
3 years ago
11

1. An electric current of 0.028 A flows through a vacuum tube. What is

Physics
1 answer:
OLga [1]3 years ago
3 0

Answer:

2.1 column, 1.31×10^19 electrons

Explanation:

Now Charge, Q = current × time

=0.028×75=2.1columb

2. Now the charge of 1 electron is 1.6×10^-19C

Hence for 2.1 C, the number of electron is;

2.1/1.6×10^-19 = 1.31×10^19 electrons

You might be interested in
SONAR stands for "sound navigation and ranging,” and it is used to map and explore the ocean floor.
lara31 [8.8K]
SONAR stands for "sound navigation and ranging,” and it is used to map and explore the ocean floor.
3 0
3 years ago
Please Help!.....................
Setler79 [48]
The awnser is tranverse wave
hope that helps

4 0
3 years ago
Why does a hot air balloon fall when the air inside is not heated​
trapecia [35]
A hot air balloon rises in the first place because the air inside is hot, which rises. So, if the air inside is not heated, it fails to rise and falls. Warm air rises because the particles get excited and jiggle with the heat, and cause the air to take up more space. So, as the surrounding air is probably colder and denser, the less dense hot air rises up in the hot air balloon.
7 0
4 years ago
What does the odometer of an automobile measure? Which of the following is moving faster? Justify your answer.
snow_tiger [21]
The odometer of an automobile measures the distance travelled by the vehicle. the car(b) is moving faster.
This can be explained as follows:
In order to compare the speed of both the vehicles and determine which one is moving faster, the speed of both the vehicles should be represented by the same unit.
Speed of scooter = 300 m/min
Converting this to km/hr,
Distance travelled by the scooter in 1 min= 300 m
Therefore, distance travelled by the scooter in 60min( or 1 hr ) = 18000m = 18 km
Speed of the car= 36 km/hr
Since the car travels a greater distance in 1 hr , we can say that it is moving faster.

Read more on Brainly.in - https://brainly.in/question/3796417#readmore
6 0
4 years ago
The two properties of an electron that cannot be known exactly at the same time are the ____________________.
enyata [817]
Position and momentum.

This is Heisenberg's Uncertainty Principle:
Δx Δp ≥ h ÷ 4π,   where Δx is the change in position, Δp is the change in momentum, and h is Planck's Constant.
6 0
3 years ago
Other questions:
  • A 70-kg researcher absorbs 4.5 x 10^8 neutrons in a workday, each of energy 1.2 MeV. The relative biological effectiveness (RBE)
    9·1 answer
  • What usually happens to the host’s DNA during the lytic cycle?
    12·1 answer
  • a person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 18 m/s. The cliff is 52 m above the
    15·2 answers
  • The short vertical parts adjacent to it also reach into the magnetic field and should experience forces. why can we neglect them
    7·1 answer
  • A clock battery wears out after moving 10,900 C of charge through the clock at a rate of 0.450 mA. (a) How long (in s) did the c
    15·1 answer
  • What people group was not targeted for estermination by the germans?​
    12·1 answer
  • (III) A baseball is seen to pass upward by a window with a vertical speed of If the ball was thrown by a person 18 m below on th
    12·1 answer
  • A 4.0-kilogram object is accelerated at 3.0 meters
    7·2 answers
  • 100 POINTS HELP!!!!!!!!!!!!!
    12·2 answers
  • Upon seizing a fake id, the alcohol establishment must give the fake id to local law enforcement authorities within.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!