Answer:
1. The ball will have potential energy at the top of the mountain, when the ball falls the ball will have kinetic energy .
2. The roller coaster has potential energy when stopped on the very top, therefore it releases kinetic energy when it falls down the rollercoaster.
3. The car on the hill had potential energy weather when it went down it had kinetic energy.
Explanation:
Sorry it took forever I had to think lol..
Answer:
ok lol
im bored
Explanation:
CO2(g) + NH3(g) + H2O(l) → NH4HCO3(s) witch type of reaction plzz within 1 hour
You are looking at two samples of iron. One sample is very small and came from the red soil on the planet Mars. The other sample is very large and came from Earth's core. True or False, these two samples contain different atoms
Which statement correctly describes the location and charge of a proton in an atom? A. The protons are inside the nucleus with a negative charge. B. The protons are inside the nucleus with a positive charge C. The protons are outside the nucleus with a negative charge. D. The protons are outside the nucleus with a positive charge.
Answer:
The correct answer is B
Explanation:
What is the chemical symbol for table salt?
Answer: NaCI
Explanation:
Answer: NaCl
Sodium chloride , commonly known as salt (although sea salt also contains other chemical salts), is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.
How were the novae on Venus similar to the landforms in Gerya’s computer model?
Answer:
Explanation:
The model results matched the novae on Venus. This provided evidence that Gerya's idea that a thinner crust and higher surface temperature might allow melted rock to push up toward the surface, forming novae.
What element is this? Ignore my answer choice.
Answer:
Aluminum
Explanation:
It is your choice because only aluminum has 13 protons
Answer:
yea its aluminum the 13 element because of its 13 protons
The data table shows the number of pumpkin seeds that germinate at different temperatures. What is the median number of seeds that germinate at 32ºC?
A. 64
B. 65.5
C. 65
D. 66
Answer: I agree with the other person it's B
A student combined equal amounts of two solutions. One solution had a pH of 2 and the other had a pH of 12. Which would most likely be the resulting pH? 1 3 6 11
Answer:
6
Explanation:
Answer:
6
Explanation:
A group of people take a diet pill. After 3 months, they measure the amount of weight they lost.
A :Independent Variable:
B: Dependent Variable:
dependent variable I think
Please help me identify the element. The picture is blurry so..
Answer:
Explanation:
aluminium
I need help ASAP! 10 points!
Answer:
The answer to this question is ( a )
Explanation:
In the early 1900s many scientists thought that an atom consisted of a positive substance with negative charges scattered throughout the substance. Then Ernest Rutherford made a discovery that led to the understanding that an atom consists mostly of empty space with- * 20 points A. protons orbiting a dense nucleus made of electrons and neutrons B. Neutrons and protons orbiting a cloud of electrons C. Electrons and protons orbiting a cloud of neutrons D. Electrons orbiting a dense nucleus made of protons and neutrons
Answer:
D(pretty sure)
Explanation:
Which description of salt is a physical property?
A. No combustion
B. Makes ionic bonds
C. Product of mixing acids and bases
D. Solid does not conduct electricity
Answer: it was in the lesson, the answer is it is solid and does not conduct electricity
Explanation:
Physical Properties Chemical Properties
White cubic crystals Do not undergo combustion
Odorless, salty taste Make ionic bonds easily
As solids, they do not conduct electricity The product of mixing acids and bases
Which two models would be most useful in predicting weather?
A. A mathematical model based on data
B. A plastic model of a cloud
C. A map that shows wind patterns
D. A peach used to represent Earth
Answer:
A. A mathematical model based on data
A mathematical model based on data and a map that shows wind patterns would be most useful in predicting weather as it they will provide data with most accuracy.
What is accuracy?
Accuracy in terms of chemistry can be defined as to how close a measurement is to the true value.There are three types of accuracy:
1) Point accuracy-It means accuracy is present at that point of scale only.It does not give any information about the accuracy of the instrument.
2)Percentage of true value--It is the accuracy which is determined by identifying accuracy of the instrument and comparing it with the measured true value.
3)Percentage of scale range- It is the accuracy which determines accuracy of the measurement.
Accuracy in case of instruments is neglected up to ±0.5 percent.
Learn more about accuracy,here:
https://brainly.com/question/14244630
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235
92
U +
1
0
n →
90
36
Kr +
A
56
Ba + 3
1
0
n
Answer:
A= 143 B=146 C=56
Answer:
A: 143
B: 146
C: 56
Explanation:
Now, demonstrate a net force of 300 N to the right. How many ways can you do it?
Answer:
I've chose 5 ways to get there.
As the toy car rolls away, it slows down. Why?
Answer:
Friction
Explanation:
Depending on the material the toy car rolls away on, the more friction is created, the more friction there is, the more on surface rubs against another, creating friction, slowing it down
hope this helps
Which statement is true about the model of the atom below? * 20 points Captionless Image A. Positively charged particles are found outside the center of the atom. B. Negatively and positively charged particles are found in the center of the atom. C. Neutral and positively charged particles are found in the center of the atom. D. Neutral particles are found outside the center of the atom.
Which subatomic particles change the mass number? (select all that apply) Protons Neutrons Electrons
Answer:
protons and neutrons pretty sure
Explanation: