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
andreev551 [17]
3 years ago
6

skid marks about 6.7 km long. If the car had an initial speed of 425 km/h, estimate the coefficient of kinetic friction. The acc

eleration of gravity is 9.81 m/s 2 .
Chemistry
1 answer:
Zanzabum3 years ago
8 0

Answer:

Explanation: F=umg where u is coefficient of kinetic friction.

But F=ma.

a = u^2/2S

U= 425km/hr = (425*1000)/3600 =118m/s

S= 6.7km = 6700m

a = 118*118/ (2*6700) = 1.04m/s

u = 1.04/9.8 =0.11

You might be interested in
What element has the atomic mass 26.981538​
jok3333 [9.3K]

Answer:

the answer is aluminum

6 0
3 years ago
PLS HELP ITS URGENT
mamaluj [8]

Answer:

Answer

The answer is option 4

6 0
3 years ago
How does a multicellular organism develop?
crimeas [40]

Answer:

The cells differentiate.

Explanation:

Organism can be simply classified on the basis of the cellularity of the organism. Two main types of organism are unicellular organisms and the multi cellular organisms.

Multicellular organism contain different types of cells.  The different cells differentiate to perform a particular function. The division of labor property is well shown by the multi cellular organism. The cells of the multi cellular organism must show differentiation process.

Thus, the correct answer is option (d).

7 0
3 years ago
Akosua has observed that anytime she drinks sobolo, her stool appears dark green. On one occasion
Anna007 [38]

Answer:

i. Sobolo is a Ghanian drink that is produced from red hibiscus flower that has an average pH of 6.7

It contains cyanidin and anthocyanins, which is a red pigment that is red in an acidic medium and changes green when introduced in a basic medium that has a high pH

The pH at the rectum of the digestive system = 5 to 8 (Slightly basic)

Therefore, what made the stool of Akosua green is that the sobolo drink changes to green in basic solution

ii. The stool which appeared green because she took sobolo turn into bright red upon mixing with the acidic WC water because of the presence of anthocyanins in sobolo, it turns red in an acidic medium

iii. Sobolo which turns green, or blue in a basic medium and red in an acidic medium can be used as a litmus solution to test the pH of a given substance

Explanation:

Sobolo or soobolo in Ghana is a name for the Hibiscus tea or tisane, which is made from calyces of the hibiscus plant, and has a sour (tangy) taste and appears bright red in color

8 0
3 years ago
​I have a few questions from my homework and I was wondering if I can get some help ​
sashaice [31]
Well it breaks down into small parts
3 0
3 years ago
Other questions:
  • The combined actions of your brain , nervous system, muscles, joints and bones that allow you to do anything from holding a spoo
    9·1 answer
  • i have a question about atoms. How would i find electrons when the atomic number is the number of protons and electrons?
    6·1 answer
  • Science questions down below
    6·1 answer
  • How many grams of NaCI are present in 11.00 moles
    5·1 answer
  • Is it possible for a molecular with polar bonds to be nonpolar?
    5·1 answer
  • Taking a nap in the afternoon makes people more focused for the rest of the day.
    14·2 answers
  • Suppose that you have 115 mL of a buffer that is 0.460 M in both benzoic acid ( C 6 H 5 COOH ) and its conjugate base ( C 6 H 5
    5·1 answer
  • Which statement best summarizes this part of kafka's the metamorphosis?
    5·2 answers
  • Which of the following properties is generally the least useful in identifying minerals?
    14·2 answers
  • In a nuclear power plant, what is the purpose of the cooling tower?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!