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
Lyrx [107]
2 years ago
9

A girl and her dog are running away from their house. The dog has a mass of 20kg. The girl has a mass of 60 kg.

Chemistry
1 answer:
zloy xaker [14]2 years ago
6 0

Answer: 160 joules

Explanation: the formula for kinetic energy is KE= 1/2 x m x v squared (ke being kinetic energy, m being mass of the object and v being velocity). To find the kinetic energy, you must plug in the given values. KE= 1/2 x 20 x 4 squared. 4 squared is 16, 16 times 20 is 320 and 1/2 of that is 160- so that’s your answer.

You might be interested in
What happens when the dynamic equilibrium state of a system is disturbed by changing the conditions?
Lostsunrise [7]

Answer:

It covers changes to the position of equilibrium if you change concentration, pressure or temperature. ... If a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract the change

Explanation:

5 0
2 years ago
Write the condensed formula from left to right, starting with (CH3)x where x is a number.
pochemuha

Complete question:

Write the condensed formula from left to right, starting with (CH3)x where x is a number.

See attached image for the structure formula of the compound

Answer:

(CH₃)₂CHC(CH₃)₃ named as 2,2,3-Trimethylbutane

Explanation:

If we number the longest chain of the carbon starting from the left, we will observe that there are four carbons in the straight chain as shown in the image.

Starting from first carbon from the left of the carbon chain, at carbon number number 2, there two alkyl group, that is two methyl (CH3 is two). Also at carbon number 3, there are three alkyl group, that is three methyl (CH3 is three).

The condensed formula will be written as;

(CH₃)₂CHC(CH₃)₃

This compound is named as 2,2,3-Trimethylbutane, an isomer of Heptane

3 0
3 years ago
If you had a pot of boiling water that is loosing volume is that at equilibrium? What are some things you can do to a pot of boi
ki77a [65]

Answer:

are you rich in points brother ? or sister ?

8 0
2 years ago
What is the most common way atoms combine
Semenov [28]
Atoms combine<span> by forming chemical bonds</span>
4 0
3 years ago
What mass of propane could burn in 48.0 g of oxygen? C3H8 + 5O2 → 3CO2 + 4H2O
Ipatiy [6.2K]

Answer:

Mass = 13.23 g  

Explanation:

Given data:

Mass of oxygen = 48.0 g

Mass of propane burn = ?

Solution:

Chemical equation:

C₃H₈ + 5O₂     →      3CO₂ + 4H₂O

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles = 48.0 g/ 32 g/mol

Number of moles = 1.5 mol

now we will compare the moles of propane and oxygen.

              O₂           :          C₃H₈

               5            :            1

             1.5            :          1/5×1.5 = 0.3 mol

Mass of propane burn:

Mass = number of moles × molar mass

Mass = 0.3 mol × 44.1 g/mol

Mass = 13.23 g  

6 0
2 years ago
Other questions:
  • The website of a popular stargazers club notes that on Wednesday the moon will rise at 6:23 PM and set at 6:12 PM on Thursday. W
    15·2 answers
  • If you have 220 liters O2 at STP how many moles of O2 do you have
    8·1 answer
  • What changes might you observe in a rock as it is weathered
    12·2 answers
  • Select all that apply.
    10·1 answer
  • How does an earthquake cause a tsunami?
    11·2 answers
  • Which term below represents a pure substance that can be separated chemically, but cannot be separated physically, that is made
    8·2 answers
  • How many moles of Mg are contained in 11.0<br> grams of magnesium?
    15·1 answer
  • Plz help me well mark brainliest if you are correct!
    14·1 answer
  • Why Phenol is acidic in nature but benzene is not acidic in nature?
    10·1 answer
  • Please help me with questions 43, 44, and 45
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!