Answer:
Before the collision, one car had velocity v and the other zero, so the centre of mass of the system was also v/2 before the collision. The total momentum is the total mass times the velocity of the centre of mass, so the total momentum, before and after, is (2m)(v/2) = mv.
Explanation:
Answer: Before the collision, one car had velocity v and the other zero, so the center of mass of the system was also v/2 before the collision. The total momentum is the total mass times the velocity of the center of mass, so the total momentum, before and after, is (2m)(v/2) = mv.
A student tests the pitch of different-sized rubber bands by stretching them around a box and then plucking them. What pitch does a thick rubber band have, and why?
A thick rubber band vibrates fast, so it produces a low pitch sound.
A thick rubber band vibrates fast, so it produces a high pitch sound
A thick rubber band vibrates slowly, so it produces a low pitch sound.
A thick rubber band vibrates slowly, so it produces a high pitch sound.
Answer:
your answer will be C
Explanation:
remember low souunds carry sound waves farther than high pithed sounds.
Answer:d or I
Explanation: remember they have sound waves so if it’s slow, then is a high pitch
(I know you don’t understand but I think it’s the right answer)
Which best describes the role of the water cycle? HELPPPP ASPPPPP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Circulates existing water on Earth.
The water cycle, also known as the hydrological cycle, refers to the continuous movement of water on, above, and below the Earth's surface. It involves processes such as evaporation,
condensation, precipitation, and runoff. The water cycle is responsible for circulating existing water on Earth, redistributing it from one place to another, and maintaining a constant supply of water in different forms (liquid, vapor, and ice) across various reservoirs like oceans, lakes, rivers, and the atmosphere. It plays a crucial role in balancing the Earth's water resources and supporting life on our planet.
Therefore the role of water cycle is best described by
Circulates existing water on Earth.
Answer:circulates water thats already on earth
Explanation:
4P + 5O2 → P4O10 How many phosphorus (P) atoms are on each side of the equation? How many oxygen atoms are on each side?
Answer:
4 p and 10 O on both sides
Explanation:
on the reactant side you can see easily that there are 4 P. With the oxygen on the reactant side you take the coefficient (5) times the subscript (2) which gives a total of 10 Oxygens.
On the product side there is a subscript of 4 next to the p, and a subscript of 10 next to the O
They are equal on both sides so you are done.
Why is DNA important?
Answer:
DNA is pivotal to our growth, reproduction, and health. It contains the instructions necessary for your cells to produce proteins that affect many different processes and functions in your body. Because DNA is so important, damage or mutations can sometimes contribute to the development of disease
hσpє ít αgαín hєlpѕ uhplѕ mαrk mє αѕ вrαínlíєѕtJenna notices that the speed of the wind has increased throughout the day. What is causing the faster wind?
There has been no precipitation.
The difference in air pressure has decreased.
The difference in air pressure has increased.
The direction of the wind has changed to the south.
The speed of the wind has increased throughout the day as there has been no precipitation.
What is precipitation?Precipitation is a process in which vapor of liquid changes into small droplets.
In the day time temperature of the atmosphere is high as compare to the night, so rate of precipitation is low at the day time due to which speed of the wind has increased as compare to the night time.
Hence, option (a) is correct i.e. there is no precipitation.
To know more about precipitation, visite the below link:
https://brainly.com/question/1783904
Answer: C
Explanation:
Why do tides have a regular cycle of 12 hours even though the Moon completes one revolution of the Earth every 29.5 days?
(HELP PLEASE!!)
A. The Earth is rotating and completes a rotation every 24 hours. As it rotates, its distance from the Moon changes every 12 hours. This causes the cycle of high and low tide.
B. The Earth is rotating and completes a rotation every 24 hours. The moon also rotates as it resolves around Earth, which causes the cycle of high and low tide.
C. The Earth is rotating and completes a rotation every 24 hours. This means that the side of the Earth far from the Moon will be near the Moon 12 hours later, restarting the cycle of high and low tide.
D. The Earth is rotating and completes a rotation every 24 hours. This causes day and night to occur. High tide only occurs during the evening, and low tide only occurs during the day.
Answer:
D
Explanation:
The Earth is rotating and completes a rotation every 24 hours. This causes day and night to occur. High tide only occurs during the evening, and low tide only occurs during the day.
Two students mixed up a new salt solution and put in blue and red food coloring to make it purple. They weighed 35 mL of the solution and found its mass to be 41 g. Where would the purple layer form if it were used with the four solutions above? Show your math.
Answer:
The density of the purple solution is _________________________.
The purple solution would form a layer __________________________.
Answer:
1435
Explanation:
i did the math and this is what i got i think its right but i dont know
Why does a carrot appear to be orange under white light?
Answer:
yesh it is many many apper indiology from whight hoPLSSSSSSSS HELP MEEEEEEEEEEEEEE
Answer: The answer to your question is B,C,D.
Answer: i think A, B, D?
Explanation:
Which water crisis is the most critical to resolve?
Option (A) Circulates existing water on Earth
The most critical water crisis to resolve is water scarcity, which affects approximately 2.2 billion people worldwide.
Explanation:
Water crises are a pressing global issue, and identifying the most critical one to resolve requires considering various factors. While all water crises are significant, water scarcity stands out as one of the most critical challenges to address.
Water scarcity occurs when the demand for water exceeds the available supply, leading to water stress and shortages. Approximately 2.2 billion people worldwide lack access to safe drinking water, and this number is expected to increase due to population growth, climate change, and inefficient water management.
Resolving water scarcity requires a multi-faceted approach. It involves implementing sustainable water management practices, such as water conservation, rainwater harvesting, and efficient irrigation techniques. Additionally, investing in infrastructure development, such as building reservoirs and improving water distribution systems, can help alleviate water scarcity.
By addressing water scarcity, we can improve access to safe and clean water, enhance food security, and promote sustainable development. It is crucial for governments, organizations, and individuals to prioritize resolving water scarcity to ensure a better future for all.
Learn more about water crisis here:
https://brainly.com/question/20987410
#SPJ14
Where does most fresh water exist?
Answer:
aquifers, ice caps, and glaciers I think
Please help me out with this question if you help me I will give you the brain thing and extra points. 1/9 image below.
D. bowling ball is the answer
You want to push a table 5 feet across the floor. How would a decrease in the resistance caused by friction change the amount of force needed to move an object?
Write in only 1-2 sentences.
help please!
Answer: A decrease in friction will allow you to move the table with less force as friction would waste some the energy provided.
Answer: By reducing the friction, either by using lubricants, reducing the roughness of the surfaces, or other means, the resistance to motion is decreased.
Explanation:
A decrease in the resistance caused by friction would make it easier to move an object, which means less force would be needed to push the table across the floor. Friction is a force that opposes the motion between two surfaces in contact, and it can make it harder to move objects. By reducing the friction, either by using lubricants, reducing the roughness of the surfaces, or other means, the resistance to motion is decreased.
According to Newton's laws of motion, the force required to move an object is directly proportional to the resistance caused by friction. Therefore, when the resistance decreases, the force needed to move the object decreases as well. With less friction, it would be easier to overcome the resistance and push the table across the floor, requiring less force to achieve the desired movement.
What are the four bases in DNA and which ones pair together?
Answer:
adenine, thymine, cytosine, and guanine
Explanation:
cytosine pairs with guanine
and adenine pairs with thymine
what are examples of structures that match each hierarchical level?
If you can please tell me before 2:00 pm
Answer:
All living organisms are made up of one or more cells
All living organisms reproduce by passing on specific genetic information to future generations
Only living organisms are capable of evolving
Only living organisms require an input of energy to drive cellular activities
All living organisms grow by increasing cell size or cell number.
Explanation:
In which environment would primary succession take place? Select 2 options.
an abandoned field
a cooling lava flow
an area of bare rock under a glacier
an unused farm
a deserted mine
Answer:
a cooling lava flow
a deserted mine
Explanation:
Answer:
a cooling lava flow
a deserted mine
Explanation:
bc im right oim to smartz
does fertilizer A grow bigger tomatoes
Answer:
I think
Explanation:
I never use it i usally grow my tomatoes
help me pls T-T (Question down below0
automnal equinox - september 22
vernal equinox - march 21
longest day in Northern Hemisphere - june 21
longest day in Southern Hemisphere - december 22
Explanation:
antumnal equinox - march 21
vernal eqinox - june 21
longest day in northern hemisphere - September 22
longest day in southern hemisphere - december 22
Can I please get help with this?
Answer:
help with what its blank
Explanation:
How can we engage the public so they are motivated to help solve the water crisis?
Answer:
Educating and spreading awareness.
a particular environment is becoming warmer over time due to rises in Carbon Dioxide produced by humans. How would the rabbit population be impacted by enoviormental change?
HELP IM DESPERATE CONVECTION 3 QUESTIONS ILL GIVE BRANLIEST
Answer: 1
Explanation: From point A the fire is making "A" hot so pint B will get hot I think..... correct me if I'm wrong but I had this before and got an A so I hope it helps you out a lil bit. (Brainiest??)
This thin layer surrounds all cells and controls what materials can enter or exit.
A) chloroplast
B) nucleus
C) cytoplasm
D) cell membrane
E) mitochondria
F)Golgi body
H) ribosomes
I) vacuoles
J)cell wall
K) endoplasmic reticulum
L) lysosome
Answer:
Explanation:
D) Cell memberane
Use the following scenario to answer the question.
Pete hangs a weight from a spring and then releases it. He watches as the spring oscillates back and forth. Pete says that this will repeat forever.
Which of the following states if Pete is right or wrong and explains the reasoning correctly?
( help please! )
A. Pete is correct because simple harmonic motion is occurring, and this type of motion should continue on forever.
B. Pete is not correct because friction will cause the spring to fall and rise with a shorter distance during each oscillation. The spring will eventually come to rest entirely.
C. Pete is not correct because eventually the weight will fall off the spring, causing the motion to cease.
D. Pete is correct because friction will cause the spring to fall and rise with a greater distance during each oscillation. It will never stop completely.
Answer:
Option: B
Explanation:
The correct answer is B. Pete is not correct because friction will cause the spring to fall and rise with a shorter distance during each oscillation. The spring will eventually come to rest entirely.
The motion of the spring is affected by friction, which gradually dissipates its energy. As a result, the amplitude of the oscillations decreases over time until the spring eventually comes to a stop. This phenomenon is known as damping, and it causes the motion to cease rather than continue indefinitely.[tex][/tex]
BRAINIEST!
What are the structures labeled Z?
lysosomes
ribosomes
vacuoles
organelles
Answer:
Its B
Explanation:
✨Please help!! ✨. CONVECTION
Answer:
heat energy
Explanation:
Which of the following does NOT play a role in South Florida’s climate?
A. latitude
B. beach erosion
C. ocean currents
D. global wind patterns
Answer:
B
Explanation:
Latitude has impact on radiation, ocean currents partially determine temperature, and wind patterns influence temps. Elimination gives B.
Equal but opposite forces are said to result in a(n)_____force of zero
Answer:
estan ingles como se hace para poner en español
can yall help me with this (OwO)
Answer:
try the order 6, 1, 5, 2, 3, 4
Explanation:
uwu
Help asap plz thank you!
All of the elephants living in a wildlife preserve would be considered a
A) community.
B) group.
C) individual.
D) population.
Answer:
D) Population
Explanation: