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
Tasya [4]
2 years ago
14

15. Use the information below to answer the following question(s). Four groups of students were each given a piece of aluminum f

oil (20 cm 20 cm), a container holding one liter of water, and some pennies. Each group was instructed to use the aluminum foil to make a boat that would hold the greatest number of pennies while floating on the water. The dependent variable in this investigation is the:
A. amount of water.
B. number of pennies.
C. size of the aluminum foil.
D. length of the boat.
Chemistry
1 answer:
Mamont248 [21]2 years ago
7 0

Answer:

b

Explanation:

because the variable being tested in this experiment is the number of pennies that could fit into that boat

You might be interested in
A reliable source of information on groundwater is always
balandron [24]
Http://water.ky.gov/groundwater/Pages/GroundwaterAwareness.aspx
3 0
3 years ago
Read 2 more answers
What is the volume of 2.0 mol CO2 at STP?
Andrew [12]

Answer:

44.8 litres is the answer to the question

6 0
2 years ago
Los hermanos Ana Victoria y José Leonardo están patinando en el hielo, con 25 y 20 kg respectivamente de masa, si Victoria empuj
andreyandreev [35.5K]

Utiliando las leyes de Newton encontraremos que la aceleración de Ana es -1.6 m/s^2.

La segunda ley de Newton dice que:

F = m*a

Fuerza es igual a masa por aceleración.

La tercera ley de Newton dice que cuando dos objetos interactuan, cadan objeto ejerce una fuerza de <u>igual magnitud pero opuesta direccion</u> en el otro.

Ahora veamos como aplicar esto.

Sabemos que la niña empuja al niño, asumamos que con una fuerza F.

Tendremos entonces la ecuación:

F = 20kg*(2m/s^2) = 40N

Y por la tercer ley de Newton, esta misma fuerza (pero en opuesta dirección) se aplica a la niña, entonces tendremos:

-40N = 25kg*a

-40N/25kg = a = -1.6 m/s²

La aceleración con la que retrosede la niña es -1.6 m/s²

Sí quieres aprender más, puedes leer:

brainly.com/question/17123407

3 0
2 years ago
Are all mutation effects the same? Provide examples.
otez555 [7]
No. insertions add a nucleotide, deletions delete a nucleotide sequence.
3 0
2 years ago
Read 2 more answers
As a sodium atom is oxidized the number of protons in its nucleus
lara31 [8.8K]

Answer:

The proton remains the same.

Explanation:

Oxidation is simply defined as the loss of electron(s) during a chemical reaction either by an atom, molecule or ion.

Oxidation is strictly on the transfer of electron(s) and not proton.

A metal that undergoes oxidation still has its protons intact otherwise it will not be called the ion of the metal since atomic number is called the proton number.

Sodium (Na) undergoes oxidation as follow:

Na —> Na+ + e-

Na is called sodium metal.

Na+ is called sodium ion.

Na has 11 electrons and 11 protons

Na+ has 10 electrons and 11 protons

From the above illustration, we can see that the protons of Na and Na+ are the same why their electrons differ because Na+ indicates that 1 electron has been loss or transferred.

6 0
3 years ago
Other questions:
  • The particle picture is best described as....
    14·2 answers
  • A chemical that helps plant cells grow larger is a what?
    14·1 answer
  • A glow stick contains a glass vial with chemicals. When the glow stick is bent, the vial breaks
    12·1 answer
  • 30.5 g of sodium metal reacts with a solution of excess lithium bromide. How many grams
    10·1 answer
  • True or False
    14·1 answer
  • Fifth grade chemistry please help me with this. The questions are related to each other and are attached to the problem.
    7·2 answers
  • How many grams of carbon are in 0.24 moles of carbon?
    9·1 answer
  • The amount of force needed to keep a 10 kg box moving at a constant
    15·1 answer
  • Electronic configurations and charges of the ions<br>in lithium fluoride?​
    10·1 answer
  • Draw the structures of the aldol addition and condensation products of cyclopentanone
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!