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
5

Atom A has an atomic number of 19 and mass number of 40. Atom B has an atomic number of 20 and a mass number of 40. Which of the

se is an accurate statement?
A) Atom A has more protons than Atom B.
B) Atom A has one less proton and one more neutron than Atom B.
C) Atom A has an extra nucleon compared to Atom B.
D) Atom A has one more proton and one more electron than Atom B.
Biology
1 answer:
Lostsunrise [7]3 years ago
5 0
<span>The Correct answer is not shown. The correct answer would have to say Atom A has one proton than Atom B because in the question it says Atom A has an atomic number of 19 and Atom B has an atomic number of 20.</span>
You might be interested in
THERE ARE MULTIPLE ANSWERS Which of the following systems use the cardiovascular system for the transport of materials? excretor
Archy [21]
Respiratory system, excretory system, digestive system
3 0
3 years ago
Read 2 more answers
TOPIC:Water Erosion
timurjin [86]

Answer:

1. This experiment was to find how mass and speed effect KE. This is important because if you were in a situation where you needed something to go higher, you would know to add more or less of mass/speed.  

To test mass, we filled the bean bag with a certain amount of water, then dropped it. After, you recorded how high it made the bean bag go. The same with speed, but same amount in the bottle, just dropped from different heights.  

My hypothesis is when you have more mass, the KE will be greater. This is also the same with speed, if it is dropped from a higher place, the bean bag will launch farther than the last time.  

2. Data I collected from the lab was like my hypothesis explained. When the height of the bottle increased, it made the bean bag go higher than the last. And I tested 4 different masses, 0.125 kg, 0.250kg, 0.375kg and 0.500kg. Each time the bean bag went higher on a larger mass.  

A lot of times on the speed test, the bean bag would go higher than the bottle drop point, but not every time. Also, when it was dropped from the same height each time, some results varied quite a bit, like when it was dropped from 1.28 the results were 1.14 then 1.30 1.30. Mass on the other hand was all in the same number range, only once the numbers were a bit off from each other.  

3.  Some formulas I used were KE= ½ mv^2 and Ht v^2/2g. The first was to calculate the kinetic energy of an object, m=mass v=speed. Second was for finding out what height I needed to drop something to reach a certain speed, Ht=Height and g= Gravitational Acceleration of 9.8 m/s^2.  

I used these to figure out tables that showed relationships between different things like mass and KE or speed and height. The whole time I was doing the lab, my data was going up, when there was more mass/speed there were higher values in the table.  

This means that my hypothesis at the beginning was correct, more of m/s means KE will increase proportionally because they are all linear. I found it surprising when the bean bag height went over the water bottle drop mark.  

4.     To conclude, my hypothesis matched my data. The data values went up when more mass or speed was added. This means if I were in a situation where I needed more kinetic energy for something, I would know to increase mass or the speed of the object giving it energy.  

The reason that this hypothesis is correct is when you have more mass, you have more energy. So, when you drop let's say a baseball, it isn’t that heavy so it would only launch the bean bag so far. But a bowling ball is very heavy and has lots of energy when falling because of that, it would make the bean bag go very high.  

To make this experiment better, I would use a smoother material for the lever so energy wouldn’t be lost by friction from wood rubbing together. Also, maybe a scanner or video camera to more accurately record how far the bean bag went. All of these would help the lab get more precise results, maybe they could be used in a future lab.

-sry its alot but i hope it helps!  :)

Explanation:

#need any questions answered within secs/mins let me know and  got you

#brainliest

:)  <3

6 0
3 years ago
Cacti in the deserts of southwestern North America and some euphorbs (succulent plants) of the deserts of Africa, have barrel-sh
mylen [45]

Answer:D. convergent evolution

Explanation:

Cacti or cactuses are member of the plant family and are often referred to as spiny plants that are usually found in the desserts.

Evolution - In biology, is described the ascent or descent in the characteristics of a species over a series of generations

and natural selection favors its modification.

When two species populations evolve to become more similar to each other we say say they have a convergence evolution.

Hint: Evolution of analogous structures is always an example of convergent evolution.

4 0
3 years ago
Which of the following statements best describes the potential working environment of a genetic counselor
Irina-Kira [14]
Where are the statements.
8 0
3 years ago
Read 2 more answers
Who likes fishing here?​
WARRIOR [948]
I love fishing! Haven’t done it in a while though.
3 0
2 years ago
Other questions:
  • What is the mass percent of oxygen in barium perchlorate?
    14·1 answer
  • Approximately how long ago did our current era begin ? O A. 1 million years OB. 4.5 billion years C. 65 million yearsO O 100, 00
    9·1 answer
  • The size to which a cell can grow is limited by its
    11·2 answers
  • Pada proses spermatogenesis, sperma-toska memerlukan nutrisi yang diperlukan dari
    13·1 answer
  • During the early stages of meiosis, two chromosomes in a homologous pair may exchange segments, producing genetic variation in s
    7·2 answers
  • Which of the following is not a step in the process of natural selection
    11·1 answer
  • How many chromosomes do down syndrome humans have?
    8·1 answer
  • This is any material that is burned for heat or power.
    13·2 answers
  • When does translation of mRNA begin in prokaryotic cells?
    12·1 answer
  • Review this paragraph and read the graphic from the text “Overfishing the Oceans.” Then answer the question.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!