answer.
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
Alexus [3.1K]
2 years ago
10

3. A 4.1 x 10-15 C charge is able to pick up a bit of paper when it is initially 1.0 cm above the paper. Assume an induced charg

e on the paper of the same magnitude, find the weight of the paper in newtons. Remember to convert the distance to meters and show your work here.
Physics
1 answer:
Anni [7]2 years ago
6 0

Answer:

\mathbf{1.51\times10^{-15}N}

Explanation:

The computation of the weight of the paper in newtons is shown below:

On the paper, the induced charge is of the same magnitude as on the initial charges and in sign opposite.

Therefore the paper charge is

q_{paper}=-4.1\times10^{-15}C

Now the distance from the charge is

r=1cm=0.01m

Now, to raise the paper, the weight of the paper acting downwards needs to be managed by the electrostatic force of attraction between both the paper and the charge, i.e.

mg=\frac{k_{e}q_{1}q_{2}}{r^{2}}

\Rightarrow W=mg

=\frac{9\times10^{9}\times(4.1\times10^{-15})^{2}}{0.01^{2}}

=\mathbf{1.51\times10^{-15}N}

You might be interested in
Tiana jogs 1.5 km along a straight path and then turns and jogs 2.4 km in the opposite direction. She then turns back and jogs 0
vichka [17]

Answer:

Distance: 4.6km Displacement= -0.2km

Explanation:

Total distance: 1.5+2.4+0.7= 4.6 km

Displacement: 1.5-2.4+0.7= -0.2km

The displacement may also be 0.2km, it just depends on if it wants it negative or not.

7 0
2 years ago
Which of the following agricultural advancements have had unforeseen adverse effects?
kobusy [5.1K]

Answer:

use of pesticides increasing insect resistance

Explanation:

Pesticides are the chemicals used to kill or stop the growth of insects or pests in crops and plants.

Pesticides are used from a very long time and repeated use of same pesticide allowed insects to get use to of it and evolve themselves in a way that  they become resistant to these pesticide, so pesticide do not have any effect on insects.

Hence, the correct answer is "use of pesticides increasing insect resistance".

3 0
1 year ago
Read 2 more answers
Before the student releases the cart by cutting the tinsel string, what forces are acting on the cart?
Naya [18.7K]

Answer: TENSION and WEIGHT

Explanation:

Force experienced by the spring is called TENSION while the WEIGHT is the gravitational pull on the body towards the earth surface. Therefore the forces acting on the cart are TENSION and WEIGHT(weight acts downwards (along negative y-axis) while the TENSION upward(along positive y-axis).

5 0
2 years ago
Two ice skaters, Lilly and John, face each other while stationary and push against each others hands. John's mass is twice the m
VladimirAG [237]

Answer:

lily's speed would be twice john's speed

7 0
2 years ago
The Olympic record for running the 200m dash is 19.3 seconds. What is the average speed for this record?
Aloiza [94]
I think it’s c. if not i’m sorry!!
3 0
2 years ago
Other questions:
  • Two objects, each of weight W, hang vertically by spring scales as shown in the figure. The pulleys and the strings attached to
    12·2 answers
  • A body A of mass 1.5kg, travelling along the positive x-axis with speed 4.5m/s, collides with another body B of mass 3.2kg which
    14·1 answer
  • About three billion years ago, single-celled organisms called cyanobacteria lived in Earth’s oceans. They thrived on the ocean’s
    12·2 answers
  • On a snowy day, max (mass = 15 kg) pulls his little sister maya in a sled (combined mass = 20 kg) through the slippery snow. max
    15·1 answer
  • What is the direction of the current in the loop as the loop rotates clockwise through the magnetic field from as viewed from th
    14·2 answers
  • Select True or False for the following statements about Heisenberg's Uncertainty Principle. True False It is not possible to mea
    5·1 answer
  • If an electron is accelerated from rest through a potential difference of 9.9 kV, what is its resulting speed? (e = 1.60 × 10-19
    14·1 answer
  • A certain alarm clock ticks four times each second, with each tick representing half a period. The balance wheel consists of a t
    15·1 answer
  • Solar wind particles can be captured by the Earth's magnetosphere. When these particles spiral down along the magnetic field int
    5·1 answer
  • in the space below derive two equations one in the y direction and one in the x direction expressing newton’s second law using s
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!