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
Jet001 [13]
3 years ago
8

A small metal sphere has a mass of 0.19 gg and a charge of -23.0 nCnC. It is 10.0 cmcm directly above an identical sphere that h

as the same charge. This lower sphere is fixed and cannot move. If the upper sphere is released, it will begin to fall.What is the magnitude of its initial acceleration?
Physics
1 answer:
RoseWind [281]3 years ago
6 0

Answer:

  a = -7.29 m / s²

Explanation:

For this exercise we must use Newton's second law,

          F -W = m a

Force is electrical force

         F = k q₁ q₂ / r²

         k q₁ q₂ / r² -mg = m a

indicate that the charge of the two spheres is equal

         q₁ = q₂ = q

         a = (k q² / r² - m g) / m

         a = k q² / m r² - g

Let's reduce the magnitudes to the SI system

        m = 0.19 g (1kg / 1000 g) = 1.9 10⁻⁴ kg

        q1 = q2 = q = -23.0 nC (1C / 10⁹ nC) = -23.0 10⁻⁹ C

        r = 10.0 cm (1m / 100cm) = 0.1000 m

let's calculate

        a = 9 10⁹ (23.0 10⁻⁹)² / (0.1000² 1.9 10⁻⁴) - 9.8

        a = -7.29 m / s²

The negative sign indicates that the direction of this acceleration is downward

You might be interested in
To heat 1g of water by 1 C requires<br> A) 1 calorie<br> b)1 Carlorie<br> c) 1 Joule<br> d) 1 watt
blsea [12.9K]
I think the answer would be 1 watt but i'm not sure
8 0
3 years ago
Astar is 10 light years away from the earth. Suppose it brightens up suddenly today, after how long can we see this change?
Blababa [14]

The phrase "light year" is a <u><em>distance</em></u> ... it's the distance that light travels through vacuum in one year.

When you look at an object located 1 light year away from you, you see it as it was 1 year ago.

If a star located 10 light years away from us suddenly brightens, or dims, or explodes, we see the event <em>10 years later.</em>

7 0
3 years ago
Guys No one's answering my question so sad! Once again I'm asking the same question –Here
nexus9112 [7]

For the front glass of the car to get wet, V_c \geq 10 \ m/s.

The given parameters:

  • <em>Speed of the car, = Vc</em>
  • <em>Speed of the rain, = 10 m/s</em>

The relative velocity of the car with respect to the falling rain is calculated as;

V_{C/R} = V_C- V_R

  • If the speed of the car equals the speed of the rain, the rain will fall behind the car.
  • If the speed of the rain is greater than speed of the car, the rain will fall far in front of the car.
  • If the speed of the car is greater than speed of the rain, the rain will fall on the car.

Thus, for the front glass of the car to get wet, V_c \geq 10 \ m/s.

Learn more about relative velocity here: brainly.com/question/17228388

8 0
3 years ago
1. Which statement is true of culture?
dlinn [17]
I think it is either A or B. I’m mostly leaning towards B.
6 0
3 years ago
A container is filled with water and the pressure at the container bottom is P. If the container is instead filled with a liquid
den301095 [7]
Eat ahah is when s susuehs
7 0
3 years ago
Other questions:
  • The force needed to accelerate a stationary 2000 racing car to a speed of 144 km/h in a distance of 80 meters
    14·1 answer
  • YOU READING THIS PLEASE GIVE ME A EASY 7TH GRADE TOPIC NO VOLCANIOS
    5·2 answers
  • How does the thickness of the lens affects its focal length plz ans this i will mark as brainliest
    10·1 answer
  • A uniform disk with radius 0.650 m
    5·1 answer
  • Determine the velocity of a beam of electrons that goes undeflected when moving perpendicular to an electric and magnetic field.
    9·1 answer
  • Why is the moon tilted​
    10·1 answer
  • 1. The first thing to do in the event of brake failure is to a. use the parking brake to stop your carb. pump the brake pedal ra
    12·1 answer
  • Which other element is most likely to be a nonreactive gas?
    7·1 answer
  • If you swing an object on the end of a string around a circle, the string pulls on the object to keep it moving in a circle. Wha
    15·1 answer
  • Define impulse and momentum.<br>No spam​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!