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
Oksi-84 [34.3K]
3 years ago
8

Cindy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters 4 minutes for the next 1000 meters 1 minute

for the next 350 meters and 3 minutes for the rest. Cindy's average speed for the entire run is meters per minute
Chemistry
1 answer:
storchak [24]3 years ago
3 0

The equation for discovering average speed is :

a = b ÷ c

Meaning that,

a = 2000 m ÷ (2 min + 4 min + 1 min + 3 min)

a = 200 m/min

a=average speed, b=total distance travelled, c=total time taken

You might be interested in
At a certain temperature the speeds of six gaseous molecules in a container are 2.0 m/s, 2.2 m/s, 2.6 m/s, 2.7 m/s, 3.3 m/s, and
iren [92.7K]

Answer:

root-mean-sqaure = 2.77 m/s

average = 2.72 m/s

The root-mean-square is always the largest because it takes account of the variance of the spread of the data. The increase is related to the fact that the data varies to sample.

Explanation:

The rootmean-square (R) is the square root of the squares of the valeus divided by the number of the datas.

R = \sqrt{\frac{x1^2 + x2^2 +...+xn^2}{n} }

R = \sqrt{\frac{(2.0)^2 + (2.2)^2 + (2.6)^2 + (2.7)^2 ^(3.3)^2 + (3.5)^2}{6} }

R = √(46.03)/6

R = 2.77 m/s

The average speed is the sum of the speeds divided by the number of datas:

A = \frac{2.0 + 2.2 + 2.6 + 2.7 + 3.3 + 3.5}{6}

A = 16.3/6

A = 2.72 m/s

5 0
4 years ago
Read 2 more answers
Why does potassium permanganate need to be standardized right before a titration?.
Ierofanga [76]
To determine the strength of potassium permanganate with a standard solution of oxalic acid.
6 0
3 years ago
PLEASE ANSWER THIS FAST!! (I’ll give ALL my points)!!
Lapatulllka [165]

Answer:

Explanation:

hakuna

4 0
3 years ago
When planning a simple experiment, what does it mean to “test one variable”?
SSSSS [86.1K]

Answer:

I believe the answer is "b". "During the experiment, the scientist has only one element, or variable, that is changed to test the hypothesis."

Explanation:

I remember from last year but I'm not totally sure. Good luck!

3 0
3 years ago
Is sliver or aluminum most often used in magnets
dedylja [7]
Neither of them are used in magnets they don’t attract metal
6 0
4 years ago
Other questions:
  • What noise does hydrogen gas make when ignited
    8·2 answers
  • How many 0 atoms are in zn(CIO3)2​
    10·2 answers
  • How many orbitals are completely filled
    11·1 answer
  • What happens when elements are chemically combined?
    12·2 answers
  • What metal is oxidized in the most common dry cell
    8·1 answer
  • Describe the electronic structure of halogen how it changeS down the group
    11·1 answer
  • Chemical reactions in which large molecules are built from small molecules are classified as ______ reactions. In contrast, ____
    8·1 answer
  • Hello,
    10·2 answers
  • A 1.018 g sample pure platinum metal was reacted with HCl to form 1.778 g of a compound containing only platinum and chlorine. D
    6·1 answer
  • A student rubbed a plastic comb with a piece of silk cloth. She held the comb near running water and saw that the stream of
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!