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
Wittaler [7]
3 years ago
11

Help pleas I dont understand

Chemistry
2 answers:
katen-ka-za [31]3 years ago
7 0
The amount of time each group took to build the boat because in the study, it is something the scientists cannot control. It is also a result of the other three factors, which are all independent.
Temka [501]3 years ago
4 0
The *independent* variable is the one that you always can control. However, the dependent variables are not since they **depend** on another.
You might be interested in
The frequency of an x-ray wave is 3.0 x 1012MHz. Its wave speed is 3.0x 108m/s. Calculate the wavelength of the x-ray wave below
jasenka [17]

Answer: The wavelength of the x-ray wave is 10^{-10}m

Explanation:

To calculate the wavelength of light, we use the equation:

\lambda=\frac{c}{\nu}

where,

\lambda = wavelength of the light  = ?

c = speed of x-ray= 3.0\times 10^8m/s

\nu = frequency of x-ray = 3.0\times 10^{12}MHz=3.0\times 10^{18}Hz= 3.0\times 10^{18}s^{-1}     (1Hz=1s^{-1})

Putting in the values:

\lambda=\frac{3.0\times 10^8m/s}{3.0\times 10^{18}s^{-1}}=10^{-10}m

Thus the wavelength of the x-ray wave is 10^{-10}m

5 0
3 years ago
Why do the atoms in a piece of copper metal have no net charge?
Marat540 [252]

Answer;

-The charges of the positive and negative copper ions cancel each other out.

Explanation;

-A normal atom has a neutral charge with equal numbers of positive and negative particles.That means an atom with a neutral charge is one where the number of electrons is equal to the atomic number.

-Atoms are electrically neutral because they have equal numbers of protons (positively charged) and electrons (negatively charged). If an atom gains or loses one or more electrons, it becomes an ion. If it gains one or more electrons, it now carries a net negative charge, and is thus anionic.

6 0
3 years ago
Read 2 more answers
Into which two smaller groups are plants divided.
vova2212 [387]
It’s B

Because that is the smallest way scientists divide plants your welcome
5 0
3 years ago
PLEASEEE HELP ASAPPPPP<br> 
inna [77]

Answer: answer A

Explanation: because it gives more detail and a summarizations

8 0
3 years ago
When opposite poles of two magnets are brought together, the poles
andreev551 [17]
They will attract each other. Similar to the saying opposites attract. 
3 0
3 years ago
Other questions:
  • Draw the most stable resonance structure for the intermediate in the electrophilic aromatic bromination of aniline, anisole, and
    10·1 answer
  • What did J.J. Thomson discover about the atom that changed the atomic model previously used?
    7·1 answer
  • Fireworks are chemical reactions that release energy. Which of these phenomena are caused by chemical reactions that release ene
    6·2 answers
  • What's evaporation according to kinetic particle theory?​
    7·1 answer
  • Help plz this was due 2 days ago but I don’t understand it at all
    5·2 answers
  • Which diagram shows a pair of electrons that have opposite spins?
    6·2 answers
  • For the following reaction, 22.8 grams of diphosphorus pentoxide are allowed to react with 13.5 grams of water . diphosphorus pe
    9·1 answer
  • The chemical formula of glucose isC6H12O6. What are the names of the elements glucose, and how many atoms of each element are pr
    9·1 answer
  • If i mix these two colors (red and clear) what do i get?
    12·2 answers
  • What mass of water is produced from the complete combustion of 4.60×10-3 g of methane?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!