Answer:
C. valence electrons
Explanation:
Each dot is a valence electron.
Also, in my school, we called them Lewis Dot Structures.
A 3-kg rock falls for 5 sec. What is its speed after falling for 5 sec? Reminder - Acceleration due to gravity, on Earth = 9.8 m/s/s
Please answer asap
Science 8 - Electromagnetic Spectrum Worksheet
Answer:
1. Electromagnetic spectrum
2. Electromagnetic radiation
3. Radiant energy
4. Infared waves
5. Electricmagnetic radiation or Infared waves
6. Radio waves
7. Gamma rays
8. Radio waves
9. Ultraviolet rays
10. This is because it doesn’t contain water or a substance.
11. You should use sunscree and a hat to protect your skin from UV light that might cause skin cancer.
Hope this helps
Any absurd answers will be reported, no links either. Ill give branliest to someone with the best answer and someone who answered them all correctly
Answer:
1. D
2.C
3. A
4. B
5. D
I tried my best hopefuly you get good grade :)
Calculate the energy transferred by a 12V hairdryer, running on a current of 0.50A, that is left on for 8.0 minutes.
PLsss help die in an hour- Am giving brainliest n no mfkn links *-*
A transverse wave is observed to be moving along a lengthy rope. Adjacent crests are positioned 2.4 m apart. Exactly six crests are observed to move past a given point along the medium in 9.1 seconds. Determine the wavelength, frequency and speed of these waves.
Answer:
wavelength: 2.4m
frequency: 6/9.1s
speed: 2.4 m * 6/9.1s
Explanation:
help please rlly easy
Answer:
If its that easy do it yourself not tryin to be mean but this is just a stem and leaf diagram
Explanation:
The Humbolt squid can travel 410 meters in 60 seconds. The squids average speed is ____. (Round to the nearest tenth)
Answer:
They swim at speeds up to 24 km/h (15 mph; 13 kn).
Explanation:
I don't get this, you don't really need to explain, I just need the answer.
Thanks!
Answer:
august 19 - low tide, high tide
august 20 - low tide, low tide
Draw a motion time graph. Write a story to go along with your graph
A Motion Demonstration Model is shown in the diagram. At which of these positions does the ball have both the greatest potential energy and the least kinetic energy?
A) Position W
B) Position X
C) Position Z
D) Position Y
Answer:
C
Explanation:
name all of the processes of the rock cycle... and number them by the picture.... no links
Answer:
1. magma
2. igneous rock
3. sediments
4. sedimentary rock
5. metamorphic rock
6. melting
7. cooling, heating
8. weathering and erosion
9. compaction and cementation
10. heat and pressure
11. heat and pressure
12. weathering and erosion
Explanation:
just trust me .!!
Boyle’s Law: When____ is held constant, the pressure and volume of a gas are___ proportional.
It didnt give me a word bank
No link answers please
Answer:
When temperature is held constant, the pressure and volume of a gas are not proportional.
Explanation:
That is Boyle's Law
Boyle’s Law states that, when temperature is held constant, the pressure and volume of a gas are inversely proportional.
What is meant by gas laws ?Gas laws are defined as the laws that govern the properties of gases by determining the relationships between the pressure, volume and temperature of the gases.
Here,
Boyle's law is the gas law that governs the relationship between the pressure and volume of gases.
Boyle's law states that, for an ideal gas at a unit mass, the pressure of the gas is inversely proportional to the volume of the gas, at constant temperature.
P [tex]\alpha[/tex] 1/V
PV = a constant
When the temperature of the gas is held constant.
Hence,
Boyle’s Law states that, when temperature is held constant, the pressure and volume of a gas are inversely proportional.
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I really need help with this!! Will give brainliest if you help T^T
Answer:
What inferences can you make about the melting points of the different substances and the motion of their particles, based on the data? (ignore that needed it here so i could see it better.)
Explanation:
Butter has a lower melting point than the cheese and the wax. The motion of the cheese were a little separated while the butter articles have more space in between. The wax had the closest particles.
I dont know if that makes sense?
NO MFKN LINK AND YOU WILL ET THE BRAINLIEST IF CORRECT!!!
10.A force that is applied to an object by a person or another object is called?
(10 Point)
A. Applied Force
B. Unbalanced Force
C. Balanced Force
Answer:
That is-
A. Applied Force
hope this helped! :)
Using The graph to answer 12 and 13. Number 14, 16, and 17 answer don't have to use graph. Please Help ASAP.
12- In The graph Below what events do these arrows mark? What happens during these events?
13- What event appears to have had the greatest impact? Explain your answer in terms of the Graph
14- What are two possible reasons why large poulations of organisms die?
16- Why did new and existing aquatic organisms flourish during the Mesozoic era? Use The terms glaciers, Pangaea, and sea level in your explanation.
17- Approximately how long did Precambrian time last?
A- 0.5 Billion years
B- 3.5 Billion years
C- 4.0 Billion years
D- 4.25 Billion years
Answer:
B 3.5 billion years
Explanation:
3.5 Billion years ago
How well does your physical environment support human activity?
Answer: The physics of human beings is often overpopulated, polluted, fossil-burning and deforested. These adverse effects can influence human behavior and lead to mass migration
Explanation:
This is a written question.
No link answers please!!!
1.Predict the change seen in the balloon in the freezer
2.Explain your prediction
3.Use the equation to provide additional support for your prediction
Answer:
2
Explanation:
it freezes from liquid to solids
URGENTTT PLEASE HELP
A balloon holds 50.0 mL of nitrogen at 25° C and a pressure of 736 mm Hg.
According to Boyle's Law, answer the following questions for 2 points each:
What will be the effect on the pressure inside the balloon if the volume is decreased to 25 mL?
Explain how this would demonstrate Boyle's Law.
Explain Boyle's Law in terms of the kinetic energy of molecules.
This is a written question
No link answers please!!!
Answer:
A container holds 50.0 mL of nitrogen at 25° C and a pressure of 736 mm Hg. What will be its volume if the temperature increases by 35° C?
✓ For this problem we would use the equation for Charles' Law which compares the direct relationship between Volume and Temperature when Pressure is …
An archer shot a 0.07 kg arrow at a target. The arrow accelerated at 4,000 m/s2 to reach a speed of 50.0 m/s as it left the bow. During this acceleration, what was the net force on the arrow?
A) 280 N
B) .0000175 N
C) 57,142 N
D) 3.5 N
The net force which has to be applied on the arrow of 0.07kg to accelerate at the rate of 4000m/s² is 280N. Thus, the correct option is A.
What is Force?
A force is an influence which can be a push or a pull that can change the motion of an object. A force can cause an object with some mass to change the velocity, i.e., results into acceleration. A force is a vector quantity as it has both the magnitude and direction.
Force applied on an object can be calculated by the formula:
f = m × a
where, f = force applied,
m = mass of the object,
a = acceleration of the object
Therefore, the force applied on the arrow is:
f = m × a
m = 0.07kg
a = 4000m/s²
f = 0.07 × 4000
f = 280N
Therefore, the correct option is A.
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if a reaction starts with 30 grams how many should it end with?
Gaining or losing energy changes the temperature of a substance is that true or false.
Answer:
I think its true
Explanation:
Why does autumn start in different months of the year in North America and South America?
A) The earth is tilted on its axis creating different seasons in the North & Southern Hemispheres at different points in its revolution around the sun
B) The earth is at a different distance from the sun due to its revolution
C) The sun is stronger during autumn due to the earth's elliptical orbit.
D) The earth’s tilt causes the Northern Hemisphere to receive more sun year-round Eliminate
Answer:
D
Explanation:
Autumn start in different months of the year in North America and South America due to the tilt in earth's axis creating different distance from the sun for different regions.
What are seasons ?A season is a time of year that can be identified by unique climatic features. Spring, summer, fall, and winter all occur in regular succession. Each has distinctive seasonal variations in light, temperature, and weather.
Each seasons starts at different month in two hemispheres of earth. This s due to the fact that, earth's axis is not perfectly circular and it is slightly tilted towards sun.
When the Northern Hemisphere is tilted toward the sun in June, more of the day is spent being illuminated by the sun's rays than it is in winter. As a result, there are longer daylight hours.
There are fewer daylight hours in December because the Northern Hemisphere is tilted away from the sun. Similarly the autumn season also differ from that of the southern hemisphere.
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Which is the source of variations in a population of organisms? No files or links 8th Grade. Please help ASAP.
A- Changes in enviroment
B- Changes in genes
C- The interaction of genes with an enviroment
D- The interaction of individuals with an enviroment
A baseball is thrown at 90 mph from east to west over a distance of 60 ft. What is
true of the ball's motion?
Its speed is 90 mph to the west.
Its acceleration is 30 mph.
Its velocity is 90 mph to the west.
Its acceleration is 150 mph.
Answer:
Its acceleration is 30 mph.
Explanation:
The true of the ball's motion will be that the velocity is 90 mph to the west. Velocity is the vector quantity. Because it shows the direction.
What is acceleration?
Acceleration is defined as the rate of change of the velocity of the body. Its unit is m/sec². It is a vector quantity. It requires both magnitudes and direction to define.
The given data in the problem is
The velocity of baseball is,V= 90 mph
The distance travelled in mile is; d=0.0113636 mile
The time period is obtained as;
[tex]\rm t = \frac{d}{v} \\\\ \rm t = \frac{0.0113636}{90} \\\\ t=1.2 \times 10^{-4} \ hr[/tex]
The acceleration is obtained is 0.00108 mile/hr².
Hence, the true of the ball's motion will be that the velocity is 90 mph to the west.
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A parallel circuit has a 125 Volt battery connected with 3 resistors. R1= 20 Ω, R2= 100 Ω, and R3= 50 Ω. Find the total current of this parallel circuit.
Hint: Find Total Resistance of a parallel circuit first then use Ohms Law I = V/R
10 A
1.5 A
8 A
16 A
Answer:
10A
Explanation:
to calculate r
1/R=1/20+1/100+1/50=2/25
r=25/2=12.5
I=125/12.5=10A
No links, i will report any absurd answers. Make it a paragraph please- ill give branliest to the best answer
NEED IN 5 MINUTES
Why do you think it’s necessary for meteorologists (weather scientists) to study multiple types of data when
predicting upcoming weather? Which types of data are important
sorry i didnt get this intime.....i hope you did well in whatever you did
Explanation:
Giving brainliest if you answer correct1!1!1!1!1!
What happens to the atoms of a substance when it burns?
Answer:All the atoms rearrange to form a different substance or different substances
Explanation:An atom is the smallest unit from which a matter can be made.
When the atoms in a substance get heated, the atoms release energy.
The atoms and molecules combine.
So all the atoms rearrange to create a different substance or different substances.
Im sorry i dont understand pls helpp -w-
How is temperature related to the physical change of a substance?
(100 word paragraph)
pls dont answer just for points
Explanation:
it's about kinetic energy
with more heat particles in a substance get energy
with more cold atoms or molecules lose energy
both change the way particles are arranged
the way particles are arranged make something a has liquid or substance