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
Basile [38]
3 years ago
10

A small amber bead with a mass of 12.6 g and a charge of −0.646 µC is suspended in equilibrium above the center of a large, hori

zontal sheet of glass that has a uniform charge density on its surface. Find the charge per unit area on the glass sheet (in µC/m2).
Physics
1 answer:
shutvik [7]3 years ago
7 0

Answer: -1.68 μC/m^2

Explanation: In order to solve this problem we have to consider the equilibrium between  the gravititional and electric forces on the small amber bead.

In this sense we have:

Fg-Fe=0 where Fe= q* E field from the plane (σ/ε0)

m*g-q*σ/ε0

replacing the values

σ=m*g*ε0/q =(12.6*10^-3*9,8*8.85*10^-6)/0.646= -1.68 μC/m^2

You might be interested in
Can I have some help please :)
Anastasy [175]

Answer:

didya know this is chrating. everyone has a breain and so do u .  

Explanation:

use and u will pass

5 0
3 years ago
Which is a diatomic molecule? <br> A. Ar <br> B. CO <br> C. CO2 <br> D. NaCl
snow_tiger [21]

Answer: B. CO

Explanation:

Diatomic molecules are those that are formed by two atoms of the same chemical element (homonuclear diatomic molecule) or different chemical element (heteronuclear diatomic molecule).  

In this sense, oxygen is a homonuclear diatomic molecule because it is formed by two atoms of the same element (O_{2}) and Carbon monoxide (CO) is heteronuclear diatomic molecule.

Sodium Chloride NaCl is not a diatomic molecule because is a product of ionization, but it can be diatomic in its gas phase with a polar covalent bond.

3 0
3 years ago
Plz Help me with this
AlexFokin [52]

Answer:

Cools ; size

Explanation:

The rate at which magma cools determines the size of the crystals in the new rock. Igneous rocks are formed from the cooling and solidification of molten magma which finds its way to the surface or depth of very low pressure beneath the surface. This place or depth of cooling of magma affects the cooling rate and hence the size of the crystals formed. Igneous rocks formed at depths below the surface have more time to cool and allows more time for Crystal growth and hence produce coarse grained crystal grains called Intrusive igneous rocks which have significantly larger crystals than those formed on the surface which cools rapidly and allowing very little time for crystal growth giving rise to the formation of fine grained crystals and are called extrusive igneous rocks.

6 0
3 years ago
A 1200 kg sports car accelerates from 0 m/s to 30 m/s in 10 s. What is the average power of the engine?
DIA [1.3K]

Answer:

3600N

Explanation:

Given: m = 1200kg, Vo = 0m/s, Vf = 30m/s, Δt = 10s

ΣF = ma

we need to find 'a' first, using the definition of 'a' we get equation:

a = (Vf-Vo)/Δt

a = (30m/s)/10s

a = 3 m/s^2

now substitute into top equation

ΣF = ma

Fengine = (1200kg)(3m/s^2)

Fengine = 3600N

5 0
2 years ago
Read 2 more answers
An example of a high explosive is what?
nordsb [41]
The answer is Dynamite.
Explosive, any substance or device that can be made to produce a volume of rapidly expanding gas in an extremely brief period. Chemical explosives are of two types; detonating, or high explosives and deflagrating, or low, explosives. Detonating explosives, such as TNT and dynamite, are characterized by extremely rapid decomposition and development of high pressure, whereas deflagrating explosives, such as black and smokeless powders, involve merely fast burning and produce relatively low pressures.
5 0
3 years ago
Read 2 more answers
Other questions:
  • The amount Of Kinetic energy an object has depends on its?
    8·2 answers
  • Two balls are kicked with the same initial speeds. Ball A was kicked at the angle 20° above horizontal and ball B was kicked at
    15·1 answer
  • A parallel-plate capacitor is connected to a battery. The space between the two plates is empty. If the separation between the c
    14·1 answer
  • PLEASE HELP!!!
    10·2 answers
  • scrieti in caiete substantivele ,adjectivele sau verbele apartinand familiei lexicale a urmatoarelor cuvinte din text : inima,ar
    13·1 answer
  • Which of the following is an application of of the technology developed by Charles kuen kao
    11·2 answers
  • PLS HELP which ones would be made of cells? and which ones show cell walls?
    11·1 answer
  • HELP PLEASE!!
    5·1 answer
  • Two spheres A and B are projected off the edge of a 1.0 m high table with the same horizontal velocity . sphere A has a mass of
    11·1 answer
  • El. A horizontally directed force of 40 N is used to pull a box a distance of 2.5 m across a tabletop. How much work is done by
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!