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
lyudmila [28]
3 years ago
7

An electroscope is a device that detects charge on objects that touch it or are brought near it. John rubs a piece of cotton fab

ric on a plastic rod and then touches the rod to the electroscope.
What methods of charging does John use?
Physics
2 answers:
Nimfa-mama [501]3 years ago
8 0
The answer is Static Electricity. When you say static electricity, there is a certain imbalance in the particles present on the surface of the material. That is why the electroscope was able to detect static electricity from the piece of cloth and plastic rod
iogann1982 [59]3 years ago
4 0

Answer:

John charges the rod through friction, then charges the electroscope through conduction. D on edg2020

Explanation:

You might be interested in
A movement that keeps the distal end of the body segment fixed in one location describes what type of kinetic chain movement? Op
Greeley [361]

A movement which keeps the distal end of the body segment fixed in one location describes what type of kinetic chain movement is known as a <u>closed kinetic chain movement.</u>

<h3>What is a closed kinetic chain movement?</h3>

A closed kinetic chain movement is defined as that position where the most distal aspects of a particular extremity are fixed to the earth or another solid object.

In conclusion; a movement which keeps the distal end of the body segment fixed in one location describes what type of kinetic chain movement is known as a closed kinetic chain movement.

Learn more about closed kinetic chain motion:

brainly.com/question/12405822

#SPJ1

5 0
2 years ago
A student leaving school travels 100 m East before he realizes he left his textbook in his locker. He heads back towards school,
andrew11 [14]

-- The overall <em>distance</em> he travels is (100m + 30m + 70m) = <em>200 meters</em>.

-- His <em>displacement </em>when he arrives at his front door is

D = (100m East) + (30m West) + (70m East)

D = (100m + 70m)East + (30m)West

D = (170m East) + (30m West)

<em>D = 140 meters East </em>

It's interesting to notice that his displacement is 60 meters shorter than the distance he walked.  

That's because there's a stretch of 30 meters somewhere in the middle that he actually covered <em>three times</em>.

Two of those times added to the distance his shoes covered (2x30m=60m), but they cancelled out of the displacement.

His front door is 140 meters East of school.  He walked 60m farther than that, going back and forth over the 30m piece.

6 0
4 years ago
Two positive point charges of 12uc and Suc
GarryVolchara [31]

Answer:

54 N

Explanation:

We have two positive charges 12uC and 5 uC ,they are kept at a distance of 10cm.

We have a relation for force between two charges q1,q2 as

F=\frac{kq1q2}{r^{2} }

Value of k is 9*10^9

On substituting the values into the equation we get,

F=\frac{9*10^9*12*5}{10^9*10}\\\\  F=54N

Hence the force between them is 54 N.

7 0
3 years ago
Which type of microscope would allow the viewer to see ribosomes inside a cell?
svlad2 [7]
Your answer would be : A transmission electron microscope
3 0
3 years ago
Read 2 more answers
The speed or celerity of deep-water waves... A. increases with increasing water depth B. increases as water becomes blue in colo
antoniya [11.8K]

Answer:

A.

Explanation:

The speed or celerity of deep-water waves increases with increasing water depth.

With increase in depth, the pressure inside the increases as p=ρgh.

And with this increase in pressure force associated with waves increase because force is directly proportional to the pressure. Now greater the force greater will be accleration and greater velocity is obtained.

4 0
3 years ago
Other questions:
  • Type O negative blood is considered the universal red blood cell donor because it _____.
    6·1 answer
  • Monitoring systems may also use ____, which are devices that respond to a stimulus (such as heat, light, or pressure) and genera
    15·1 answer
  • The term water cycle refers to how water moves _____.
    8·2 answers
  • If a light Ray is reflected off the shiny surface at 170 degrees at what angle did the light-ray first strike the surface
    13·2 answers
  • A small pebble is heated and placed in a calorimeter containing 25 ml of water at 25°c. the water reaches a maxiumum temperature
    15·1 answer
  • A student is skateboarding down a ramp that is 6.0 m long and inclined at 180 with respect to the horizontal. The initial speed
    7·1 answer
  • ⦁ If the scientists only performed 1 experiment but it supported their hypothesis, why can it not be considered a theory?
    5·1 answer
  • A light-year is the distance light travels in one year, at a speed = 2.998 x 10^8 m/s.
    8·1 answer
  • A sound wave traveling at STP has a period of .0023 seconds. The wavelength of this sound is closest to
    12·1 answer
  • AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!