What is the curie used to measure?
a.amount of radiation equaling disintegrations per second
b.amount of radiation biological material absorbs
c.amount of gamma radiation needed to produce a specific number of positive or negative particles
d.amount of radiation needed to produce positive or negative particles due to gamma rays passing through one gram of air
Answer:
Explanation:
A
A theory usually has observation and reasoning in its favor, although it may not be experimentally verified.
True or False
Please answer one or both of the questions below
Answer:
a=2 b=1 c=3 im litterally takeing the quiz right now
Explanation:
Answer:
a=2 b=1 c=3
Explanation:
use your brain :)
Choose all the answers that apply.
Which of the following are physical properties?
flammability
hardness
magnetism
boiling point
density
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And 5 star rate
Answer:
OF COURSE I AGREE.A CHEMICAL REACTION REARRANGES THE CONSTITUENT ATOMS OF THE REACTANTS TO CREATE DIFFERENT SUBSTANCES AS PRODUCTSWhich of Newton's 3 Laws explains a rocket lifting off? *
Law of inertia
Law of Acceleration
Law of Action-Reaction
Answer:
Newton's Third Law of Motion
Explanation:
A rocket expels hot gases at a very high pressure very quickly, and these gases have lots of energy, and according to Newton's third law, every action has an equal and opposite reaction. So, expel lots of gas at a high rate, and the energy of the gases being pushed out propels the rocket upward. Hope that helps!
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In two or more complete sentences explain how to balance the chemical equation,
Ca + N2 ⟶ Ca3 + N2 and include all steps.
Answer:
to balance this equation, your going to put a 2 in front of the "Ca" then that makes the equation look like this "2Ca + N2 ⟶ Ca3 + N2" since the "Ca" had one atom, we added two more atoms
as we all know 1 + 2 = 3
then that gives us 3 "Ca's" on both sides
hoped this help and good luck on your test! :D
Explanation:
35 POINTS AND BRAINLIEST!
Which description is not a property of an acid?
A. pH lower than 7
B. Turns litmus paper blue
C. Sour taste
D. Corrosive
Answer:
B turns litmus paper blue
Explanation:
PLEASE HELP ME!!
What happens at the borders of major tectonic plates?
Radioactivity is very high and large amounts of uranium are found.
Earthquake and volcanic activity is evident.
The edges of plates break apart due to the crushing that occurs.
The borders are calm and free of plate movement activity.
Answer: continental crust is created and oceanic crust is destroyed.
Explanation:
Answer:
Radioactivity.
What evidence exists to support the idea that the composition of ocean water includes dissolved oxygen?
Answer:
The evidence that exists to support the idea that the composition of ocean water includes dissolved oxygen is that all water has oxygen in it.
Explanation:
Answer:
Fish get oxygen from water through their gills - they require oxygen to survive, so they have to be getting it from the water.
Explanation:
The concentration of dissolved oxygen and carbon dioxide are very important for marine life forms. Although both oxygen and carbon dioxide are a gas when outside the water, they dissolve to a certain extent in liquid seawater. Dissolved oxygen is what animals with gills use for respiration (their gills extract the dissolved oxygen from the water flowing over the gill filaments).
answer this please sooo
How does the amount of water in a glass affect the pitch of the sound it produces?
Answer:
the more water the higher the pitch the less water the lower it is
Answer:
The glass with the most water has the lowest pitch. The glass with the least amount of water has the highest pitch.
Explanation:Tapping the glasses causes the air to vibrate. When the air column is shorter, the air vibrates faster and the pitch is higher.
How does the temperature of water affect its ability to hold oxygen?
Answer:The solubility of oxygen and other gases will decrease as temperature increases 9. This means that colder lakes and streams can hold more dissolved oxygen than warmer waters. If water is too warm, it will not hold enough oxygen for aquatic organisms to survive.
Explanation:
Use the images below to complete the information on the table and answer questions 1-5.
Answer:
Proton: Positive
Electron: Negative
Neutron: No charge
Select all that apply. Wire is typically made out of metal because metal
Question 10 options:
Is malleable
Is ductile
Is brtittle
Conducts electricity
Wire is typically made out of metal because metal is ductile and conducts electricity.
Ductility is the property of metal which makes it easy to be stretched into wire when drawn without breaking. This is a great feature for wires.
Conductor of electricity : The ability for a material to allow electricity to pass through it with ease shows it is a good conductor of electricity.This is also a great feature for wires.
The transition metal, copper is usually preferred for the manufacture of electrical wires This is because apart from being thermal resistant and cheap, it is very ductile and a good conductor of electricity.
See more on the property of metals to make wires :https://brainly.com/question/13854828
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Answer:
agree
Explanation:
you cannot undo the reaction when you bake the cake
Explain how getting sick can affect the body’s ability to maintain homeostasis.
Answer:
If your body manages to maintain homeostasis, then it means everything is in order, and you are in a healthy state. However, getting sick would indicate that your body conditions are not stable. This happens when the homeostasis is disrupted due to the interference of pathogens such as viruses and bacteria; for example, catching a flu virus would cause you to have a fever, cold, sore throat, and muscle aches. These symptoms eventually weaken your body and prevent you from performing your daily life functions.
The homeostasis has been affected while getting sick due to a change in temperature with disturbed electrolyte balance.
Homeostasis has been the ability of the body to maintain the equilibrium balance of the electrolytes, and elements for the proper functioning of the system.
The homeostasis has been maintained with the temperature and balance of the components in the preset limit. However with the change in the homeostasis results in the change in the balance and functioning of the organs.
While getting sick, we have changes in the body temperature along with electrolyte dis-balance. This results in disturbed homeostasis.
For more information about homeostasis, refer to the link:
https://brainly.com/question/9087319
Which statement is true about heat and light energy?
A Heat and light energy always move from colder objects to warmer ones.
B Heat energy moves in many different directions and light energy moves in only one direction.
C Objects do not produce both heat energy and light energy.
D Some objects can absorb both heat energy and light energy.
Answer:C
Explanation:
Answer:
D.
Explanation:
Got it right on my test, Trust me.
How do you think the presence of farms will affect the oxygen concentration in the ponds? im in sixth grade so i can't really comprehend to much of words lik algae or my teacher will ask me how i got educated on the topic
Answer:
The more farms the less the oxygen concentration levels. Farmers use fertilizers to increase crop growth. When algae die, bacteria break down their remains, using up the dissolved oxygen in the water. The rapid loss of oxygen, or eutrophication, can kill fish and other wildlife living in the pond or stream.
Explanation:
Answer:
The more farms the less the oxygen concentration levels. Farmers use fertilizers to increase crop growth. When algae die, bacteria break down their remains, using up the dissolved oxygen in the water. The rapid loss of oxygen, or eutrophication, can kill fish and other wildlife living in the pond or stream.
Jim ran 200 meters in 30.4 seconds. Mac ran 100 meters in 30.4 seconds. Who ran faster?
Jim, because his distance divided by time is less
Jim, because he ran a greater distance in the same time
Mac, because he ran the same distance in fewer seconds
Mac, because his rate of change of distance over time was constant
Jim, because he ran a greater distance in the same time :)
By the way, this is a maths question
What happens to the wave on the string when you decrease the amplitude?
Answer:
The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases. ... The amplitude of a wave is related to the amount of energy it carries. A high amplitude wave carries a large amount of energy; a low amplitude wave carries a small amount of energy.
Explanation:
have an amazing day luv
Answer:
The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases
Explanation:
Help I need to know and please answer three of the following questions
Answer:
we'll, metal cups are usually used for coffee so people who bring their coffee to work from home can keep it warm. metal cups however do not keep things cold, it may feel cold on the outside, but that's an illusion. plastic doesn't do much, its just a cold insulator. it is good at keeping things cold because it is a poor heat conductor. foil can keep things warm, but it can also keep things cold. do what you will with the info lol.
Answer:
1.H & E
Explanation:
metal cups keep things hot and cup H is made to keep things both cold and hot but the other cups will melt if you put hot stuff in them and number three is an answer it your self because it says to enter your answer so........
²³√∛·×÷±≈≠≤≥≡≅⇒,⇔∈∉∧∨∞αβΔπФω↑↓∵∴↔→←⇵⇅⇄⇆∫∑⊂⊃⊆⊇⊄⊅∀°∠∡⊥∪∩∅¬⊕║∦∝∞㏒㏑
Which option is an example of a physical change?
iron rusting
metal denting
silver tarnishing
gasoline burning
please hurry!!!!!
Brainliest if right!
Answer: metal denting
Explanation:
a physical change is something that can be undone. while chemical changes are relatively permanent. You can reshape the metal so you know it is physical.
If a average person and a trained athlete where to exercise which pule rate would be slow and which pulse rate would be fast?
Is this right?
...........
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Asapp
Answer:
Agree
Hope this helps
Which answer one
(A Carbon dioxide Carbon dioxide enters their leaves from the atmosphere.)
( B Carbon dioxide enters their leaves from the atmosphere.)
(C Carbon dioxide enters their roots from the soil.)
(D Carbon dioxide is produced in a chemical reaction inside their mitochondria.)
Answer:
B) Carbon dioxide enters their leaves from the atmosphere.
Explanation:
Answer: I think the answer is A
Explanation:
15 points and brainiest (if there's 2 answers)
Is the coloring of the peppered moths an example of competition, differential reproductive success, or inherited variation?
Please explain why
thank you
please help in this,it will be such a help,ASAP,and ill put u brianlist first one!!!!!,both questions
Answer:1:T
Explanation:
Hope this helped! this is because it is true all the others don’t make sense.