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
Nezavi [6.7K]
3 years ago
6

What’s the kinetic energy of the object? Use .

Physics
1 answer:
Fynjy0 [20]3 years ago
4 0

Answer:

18joules

Explanation:

1/2 of 4=2

2 multiply by 9= 18 joules

You might be interested in
In a thundercloud there may be an electric charge of +40 C near the top of the cloud and -40 C near the bottom of the cloud. The
Ratling [72]

Answer:

Electric force, F=-3.59\times 10^6\ N

Explanation:

Given that,

Electric charge 1, q_1=+40\ C

Electric charge 2, q_2=-40\ C

Distance, d=2\ km=2\times 10^3\ m

To find,

The electric force between these two sets of charges.

Solution,

There exists a force between two electric charges and this force is called electrostatic force. It is equal to the product of electric charged divided by square of distance between them.

F=k\dfrac{q_1q_2}{d^2}

k is the electrostatic constant

F=8.99\times 10^9\times \dfrac{40\times (-40)}{(2\times 10^3)^2}

F=-3.59\times 10^6\ N

So, the electric force between these two sets of charges is -3.59\times 10^6\ N.

5 0
3 years ago
Please help with this, oh and bungee gum contains both the properties of rubber AND gum you see?
Sladkaya [172]
Can I still get 5 points bc u already figured it out
8 0
3 years ago
Describe how the sound from the radio reaches all parts of the room?? (2m)
Evgen [1.6K]
Sound waves travel around the boxed room causing them to bounce off the nearest walls to the end of the room
5 0
3 years ago
a spring is stretched 20 cm by a 30.0 n force. determine the work done in stretching the spring from 0 to 40 cm?
Alekssandra [29.7K]

The work done when a spring is stretched from 0 to 40cm is 4J.

What is work done?

Work done is the magnitude of force multiplied by displacement of an object. It is also the amount of energy transferred to an object when work is done on that.

The work done on the spring to stretch to 40cm is,

F = kx

where F is force, k is force constant.

k = F / x = 10 N / 20 * 10^-2 m = 50 N/m

W = 0.5 * k * (x)^2

where W = work done, k = force constant.

W = 0.5 x 50 x (40 x 10^-2)^2 = 4 J.

Therefore, the work done on the spring when it is stretched to 40cm is 4J.

To learn more about work done click on the given link brainly.com/question/25573309

#SPJ4

3 0
1 year ago
In which position is it winter in North America? *
Dominik [7]

Answer:

position 4

Explanation:

if the north is tilted away it gets no sunlight, so its winter

6 0
3 years ago
Read 2 more answers
Other questions:
  • A major part of the greenhouse effect is that it involves the absorption of the earth's outgoing radiation by atmospheric gases.
    5·1 answer
  • If your speed changes from 10 km/h to 6 km/h, you have a(n) ______ acceleration.
    15·2 answers
  • The membrane of a living cell can be approximated by a parallel-plate capacitor with plates of area 4.50×10−9 m2 , a plate separ
    13·1 answer
  • And the density of water is 1000kgm3 plz urgent​
    6·1 answer
  • You are playing hockey with friends on a very large frozen pond. The hockey puck is at your feet motionless. You take a slap-sho
    12·1 answer
  • Define the strip attached to the magnet?​
    5·1 answer
  • Equipotential lines are usually shown in a manner similar to topographical contour lines, in which the difference in the value o
    11·1 answer
  • If you run at 12 m/s fr 15 minutes, how far will you go
    10·1 answer
  • How far should flammable material be kept from electrical panels?
    8·1 answer
  • What is the thinnest film (but not zero) that produces a strong reflection for green light with a wavelength of 500 nm ?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!