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
ValentinkaMS [17]
3 years ago
10

An experiment is designed to determine the launch angle that will give a projectile the greatest range (make it go the longest d

istance). The "launcher" is a slingshot type apparatus that is spring-loaded and released by a trigger. For each trial, the same painted rock is retrieved and launched. Measurements are taken linearly from the launch site to the landing site. The trials were done on a windless day.
Which of the following is the dependent variable?
A-the angle of the launcher
B-the amount of wind
C-how the distance was measured
D-how far the rock went
Chemistry
1 answer:
konstantin123 [22]3 years ago
7 0
<span>The dependent variable is the variable which is the result of the changing experimental variable. In this case, how far the rock went is a result of changing the angle of launch. Therefore, how far the rock went is the dependent variable.</span>
You might be interested in
Determine the mass (in grams) of 8.02 x 1024 atoms of mercury (Hg).
Virty [35]
<h3>Answer:</h3>

2670 g Hg

<h3>General Formulas and Concepts: </h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

  • Using Dimensional Analysis
<h3>Explanation: </h3>

<u>Step 1: Define</u>

8.02 × 10²⁴ atoms Hg

<u>Step 2: Identify Conversions</u>

Avogadro's Number

Molar Mass of Hg - 200.59 g/mol

<u>Step 3: Convert</u>

  1. Set up:                               \displaystyle 8.02 \cdot 10^{24} \ atoms \ Hg(\frac{1 \ mol \ Hg}{6.022 \cdot 10^{23} \ atoms \ Hg})(\frac{200.59 \ g \ Hg}{1 \ mol \ Hg})
  2. Divide/Multiply:                                                                                               \displaystyle 2671.42 \ g \ Hg

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

2671.42 g Hg ≈ 2670 g Hg

3 0
3 years ago
When you burned copper, the product copper oxide appeared on the wire. Besides copper, the other reactant is oxygen, O2 . Explai
NISA [10]

Copper oxide is the only product, and it contains copper and oxygen.

one of the reactants is copper, so the other reactant must be oxygen.

The copper metal must have combined with something in the air.

8 0
3 years ago
Read 2 more answers
Fusion reactions constitute the fundamental energy source of stars, including the Sun. Hydrogen “burning” initiates the fusion e
AfilCa [17]

Answer:

C)  The most efficient fusion reactors would use heavier forms of hydrogen.

Explanation:

From the information presented to us in the question, the third sentence reveals that heavier forms of hydrogen produces larger amount of energy and most importantly reacts more efficiently when fusion occurs.

<em>In fact, the </em><u><em>heavy isotopes of hydrogen—deuterium and tritium—react more efficiently</em></u><em> with each other, and, when they do undergo fusion, they yield more energy per reaction than do two hydrogen nuclei. </em>

3 0
3 years ago
"what is the expression for kw, the ion–product constant for water"
Brilliant_brown [7]
The answer is Kw = [H20⁺][⁻OH].  The expression for kw, the ion–product constant for water is Kw = [H20⁺][⁻OH].
3 0
3 years ago
Read 2 more answers
Which statement best describes liquid water and water vapor at equilibrium?
LenaWriter [7]
I took this I believe it’s A
8 0
3 years ago
Other questions:
  • Which of these is an example of a chemical change?
    7·2 answers
  • Why are cells the building blocks of an organism.​
    6·1 answer
  • If an element has three isotopes with known masses, what other information is needed to find the average atomic mass of the elem
    7·2 answers
  • Write a one or two summary paragraph discussing determining density
    8·1 answer
  • How is the orbital configuration of neutral atoms related to the atoms chemical properties
    12·2 answers
  • Describing physical and chemical changes:
    13·1 answer
  • As the temperature is increased, the rate of a chemical reaction usually
    9·1 answer
  • Which best explains why the atomic theory is a scientific one?
    14·1 answer
  • What is the correct name for TiF3
    6·2 answers
  • What are at least 3 places carbon can be found?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!