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
Sidana [21]
3 years ago
12

The change in time for the first quarter is

Chemistry
2 answers:
Flura [38]3 years ago
6 0

Answer:

2.34

Explanation:

icang [17]3 years ago
6 0

Answer: The change in time for the first quarter is  1.39 seconds.

The change in time for the second quarter is 0.78 seconds.

The change in time for the third quarter is 0.64 seconds.

The change in time for the fourth quarter is 0.54 seconds.  

Explanation: took info from my data and completed lab

Step 5: Measure the Speed of the Toy Car on the Higher Track

Calculate the change in time for each quarter of the track. Record the change in time in Table E of your Student Guide.

Also added the other calculations -

<em><u>Calculate the average time the car took to reach each checkpoint. Record the average time in Table D of your Student Guide.</u></em>

The average time to the first quarter checkpoint is 1.39 seconds.  

The average time to the second quarter checkpoint is 2.18 seconds.

The average time to the third quarter checkpoint is 2.82 seconds.

The average time to the finish line is 3.36 seconds.

<u>Calculate the speed of the car at each checkpoint by dividing the distance between each checkpoint, in meters, by the change in time. Record your answers in Table E of your Student Guide. </u>

The speed at the first quarter checkpoint is 1.09 m/s.  

The speed at the second quarter checkpoint is 1.95 m/s.

The speed at the third quarter checkpoint is 2.37 m/s.

The speed at the finish line is 2.80 m/s.

Please make me Brainly..:)

You might be interested in
What is the mass of oxygen in 3.34 g of potassium permanganate?
3241004551 [841]

Answer:

1.35 g

Explanation:

Data Given:

mass of Potassium Permagnate (KMnO₄) = 3.34 g

Mass of Oxygen: ?

Solution:

First find the percentage composition of Oxygen in Potassium Permagnate (KMnO₄)

So,

Molar Mass of KMnO₄ = 39 + 55 + 4(16)

Molar Mass of KMnO₄ = 158 g/mol

Calculate the mole percent composition of  Oxygen in Potassium Permagnate (KMnO₄).

Mass contributed by Oxygen (O) = 4 (16) = 64 g

Since the percentage of compound is 100

So,

                        Percent of Oxygen (O) = 64 / 158 x 100

                        Percent of Oxygen (O) = 40.5 %

It means that for ever gram of Potassium Permagnate (KMnO₄) there is 0.405 g of Oxygen (O) is present.

So,

for the 3.34 grams of Potassium Permagnate (KMnO₄) the mass of Oxygen will be

                  mass of Oxygen (O) = 0.405 x 3.34 g

                  mass of Oxygen (O) = 1.35 g

5 0
4 years ago
Someone help me with this ASAP!!
Sav [38]

Answer:Heavy rainfall causes a landslide on the side of a mountain

Explanation: The hydrosphere is the water in the world. The geosphere is rocks and earth.

3 0
3 years ago
Read 2 more answers
A theory that has been proven true repeatedly over time and never disproven is called ??
Sedaia [141]
<span>A theory that has been proven true repeatedly over time and never disproven is called a law</span>
8 0
3 years ago
Which of the following elements does NOT form a diatomic molecule? Question 5 options: H2 O2 Mg2 Br2
erica [24]
Mg is a metal. Under ordinary conditions it will not form a diatomic molecule. The other 3 are non metals. They come from the right side of the periodic table and they willl form diatomic molecules.
6 0
4 years ago
Which ones are chemical change help please its a timed test!
leva [86]
I think “A” is the right answer
7 0
3 years ago
Read 2 more answers
Other questions:
  • Who might benefit financially the most from the EPA's claim
    8·2 answers
  • 9.
    7·1 answer
  • I don't know which the correct answer it is ???
    15·1 answer
  • Green plants use light from the sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas fo
    6·1 answer
  • The atomic number of an atom is
    8·1 answer
  • Tipo de enlace en los compuestos. Compuesto /Electronegatividad Elemento 1/Electronegatividad Elemento 2/ Diferencia de electron
    9·1 answer
  • Find the rationalising factor for the denominator of the expression 1÷3+ 5<br>​
    9·1 answer
  • What is one property that is different between water and oil? *
    6·1 answer
  • The molar mass of kcl is 74.55 g/mol. if 8.45 g kcl are dissolved in 0.750 l of solution, what is the molarity of the solution?
    12·1 answer
  • Thermal Energy and Kinetic Molecular Theory Quick Check
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!