Answer: C
Explanation:
A rock is thrown straight up from the surface of the Earth. Which one of the following statements describes the energy
transformation of the rock as it rises? Neglect air resistance.
a) The total energy of the rock increases.
b) The kinetic energy increases and the potential energy decreases.
c) Both the kinetic energy and the potential energy of the rock remain the same.
d) The kinetic energy decreases and the potential energy increases.
e) Both the potential energy and the total energy of the rock increase.
Answer: d
Explanation:
Uuhhh I’m not good at explanations...
The kinetic energy decreases while the potential energy increases.
Option d is the answer because as soon as this ball gets thrown from the surface of the earth kinetic energy would be at its greatest.
we have
[tex]k=\frac{1}{2} mv^{2}[/tex]
The velocity is going to be minimized. As the ball is going up its velocity would be falling or decreasing due to gravity. [tex]k=\frac{1}{2} mv^{2}[/tex] would then have a smaller value. So kinetic energy is reducing/decreasing.
We have potential energy as u = m*g*h = 0. This is because the height is 0 as the ball is released. But as the ball goes up, the height would start to increase so the potential energy increases.
In conclusion as the ball is thrown straight from the earth, kinetic energy decreases and potential energy increases.
Read more at https://brainly.com/question/2858799
A ball is thrown up into the air. Describe the work done on the ball and the energy transformations that take place
between the time the ball is released and the time it reaches its maximum height.
Answer:
so if the ball is thrown up it will eventually fall right? so what it's asking is how hard and fast the ball is thrown and so the time is released it will go up, and by the time it reaches the maximum height it will fall.
The kinetic energy of a boulder weighing 50.0 N sitting still on the edge of a cliff 25.0 m high is
a
25.0j
b
0.0j
c
2.0j
d
750.0j
Options: Power, energy, time
_____ is the rate of _____ it takes to use a certain amount of _____
Answer:
power is the rate of time it takes to use a certain amount of energy
Explanation:
i think,, dont take my word for it tho.
sorry if its wrong :'(
Do y'all have any fears you cannot stand?
I do... cockroaches... well any bug actually.
(I'm doing this to get rid of points bc I'm quitting so yeah)
Answer:
tbh sharks epically in waters that aren't clear
Explanation:
Answer:
thanks
Explanation:
for that
As a pelican flies through the air, it flaps its wings, thereby pushing down on the air below. What is the reaction force?
A the force of air resistance that resists the pelican's forward movement
B the air pushing back up on the wings of the pelican
C the force of gravity pulling the pelican down
D the air around the pelican pushing down on other air molecules farther below
Answer:
the reaction force in this situation would be B
Explanation:
The action is the wings pushing down whilst the reaction is the air pushing up which allow the bird to fly .
plz mark brainliest to help me lvl up :P
Explanation to help get you the answer, not straight-up though:
Both fixed and flapping wings work by deflecting air downwards, says Professor Geoffrey Spedding, Chairman of Aerospace and Mechanical Engineering at the University of Southern California. " [When air is forced downwards] the reaction force is upwards, and this lift force supports the bird's weight. The bird’s wing pushes against the air and the air pushes back with an equal and opposite force. Unfortunately, with every down stroke there must be an up stroke, what goes up must come down. If the bird had an equal upward stroke to its downward stroke, the net force of the bird’s wing flaps would equal zero.
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Hope my knowledge helped you get an answer :3
Which of the following will increase the sliding friction between you and the floor?
A. socks with rubber at the bottom
B. put water on the floor
C. separate your foot and the floor
D. decrease the weight of your foot
Answer:C
Explanation: No friction with the floor if it is not touching the floor.
If a girl is standing still and holding a box, is she doing any work? (No)
The _____ on the box is not in the same _____ as the movement
Answer:
gravity
Explanation:
Would a malfunction in the circulatory system affect other organ systems?
Yes. They all work together. If one system doesn't function properly it can cause other systems to malfunction or shut down.
No. Each system functions independently
Free Test Answers!!
Test: Interaction of Forces Unit Test Answers:
D. The balls both have the same electrical charge.
C. The magnetic force will be strongest on box #1.
B. Load or an electrical device
A. motion
C. Insulators obstruct the flow of electrons, whereas conductors allow electron to flow freely.
B. A parallel circuit has more than one path for the circuit to take.
D. Box B because it has more mass.
A. It will be an unstable system because it will not be able to recover from the disturbance.
B. 7.0 ohms
B. on.
C. Mars has less mass than Earth.
B. solenoid
B. static electricity.
B. false
The magnetic forces makes a maglev train to float above the tracks because of the repulsion property and similar magnetic poles.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Box A isn't stable and will fall over since it's being pulled down and if you push it if nothing is around to secure it's movements. Box B is stable and will only side if nothing is around to secure it's movements. The mass of the boxes could also affect what would happen if you pushed the box, if Box B had a heavy mass it most likely wouldn't move. If Box A had more equilibrium and a heavy mass, It would have a better chance of not falling over.
<3 Enjoy,
Dea
Answer:
Thank you very much.
Explanation:
Summarize the procedures you perform before, during, and after a lab investigation.
Answer:
Before Lab
At all times while in the lab area you must follow all classroom rules and behave in an appropriate manner or
you will not be allowed to participate in laboratory activities. You should come to class prepared with any
pre-lab assignments or instructions that have been given.
⋅ While working in the lab area safety goggles should be worn at all times.
⋅ All long hair should be tied back; open-toed shoes, baggy clothing, and loose jewelry should also be
avoided.
⋅ Know the location and proper use of all safety equipment (including fire extinguisher, fire blanket, firstaid kit, eye wash station, and sink) as well as classroom exits.
⋅ Food and drink are not allowed in the lab area.
⋅ Never work alone in the laboratory.
⋅ If there is an accident or a problem, immediately stop what you are doing and report it to your instructor.
During Lab
⋅ Before beginning any procedures, read through all lab instructions that your instructor has given.
⋅ If you do not understand the instructions or the procedures, ask for clarification.
⋅ Perform only procedures or experiments that have been assigned by your instructor.
⋅ Clean up all spills, including water, and messes immediately before proceeding.
⋅ Wear an apron whenever using acids, bases, or stains.
⋅ All solutions, chemicals, and specimens should be treated with care.
⋅ Never taste or smell anything in the lab. If instructed to smell something, use your hand to gently waft the vapors to
your nose.
Fire / Electrical Safety
⋅ Know the location and proper use of the fire blanket and fire extinguisher.
⋅ Never directly touch something that may be hot, use a hot mitt or tongs instead.
⋅ When heating, always point test tubes away from yourself or others.
⋅ Never use electrical equipment near water or moisture.
⋅ Extinguish all uncontrolled flames immediately and notify your instructor.
⋅ If a burn is received, immediately place the burned area under cold water and notify instructor.
⋅ Always make sure that all flames and electrical equipment are turned off when not in use.
Glassware / Sharp Object Safety
⋅ Never use glassware that is cracked or chipped (even if it does not leak).
⋅ When using a blade, never use a dull blade and always cut downward and away from your body.
⋅ If a cut is received, immediately wash the cut, apply pressure to stop the bleeding, and notify your
instructor.
⋅ Always dispose of broken glass in a glass disposal box and notify your instructor.
Chemical Safety
⋅ Know the location and proper use of the eye-wash, sinks, and chemical showers.
⋅ Know the location of sand or vermiculite in case of acid spills.
⋅ When diluting, always pour acids into water. Do not pour water into acid.
⋅ If a chemical is spilled on your person, immediately flush the area with water and notify the instructor.
⋅ Dispose of chemicals only as instructed in marked containers.
Biological Safety
⋅ Wear protective gloves when handling biological specimens.
⋅ If you come into direct contact with biological specimens or fluids, immediately notify your instructor.
⋅ Dispose of all biological cultures or materials containing live cultures in the proper biohazard bags.
After Lab
Before leaving the lab area, return all equipment to its proper place and make sure that your lab area is
cleaned up. After completing the lab wash your hands thoroughly with soap and water.
(Hope this helped)
The diagram shows two dodgeballs colliding. The red arrow shows the direction of force of the moving ball striking a stationary ball. Which arrow shows the direction of the force exerted by the stationary ball on the moving ball?
Answer: It’s the second arrow from the top to the bottom
Explanation:i did the test
The second arrow is the right arrow.
Watch the VIDEO and then explain the steps to build a simple electromagnet.
Specific Heat and Thermal energy question. 30 points, will give brainliest. Please answer. Pic attached
Answer:
.69
Explanation:
What is the amplitude of the wave? (I don’t know if the answer choice I marked is correct)
Which actions are essential to active participation? Check all that apply.
taking control
coming prepared
being focused
keeping quiet
assisting others
asking questions
Answer:
2, 3, 4, 6.
Explanation:
The actions which are essential for active participation are coming prepared, being focused, keeping quiet, and asking questions so, options B, C, D, and F are correct.
What is active participation?In order to make wise decisions and actively and positively participate in the democratic cultures, they live in, citizens must possess the competencies that active participation calls for. These competencies include a level of awareness of oneself in relation to the environments into which they are thrust.
The fundamental tenets of active participation include promoting an individual's rights, choices, and independence. The cornerstone of person-centered care, which respects a person's dignity, values, and freedom to choose and make decisions in accordance with their unique needs and beliefs, is also these concepts.
To know more about active participation:
https://brainly.com/question/15207059
#SPJ2
Read the following excerpt from The Jungle Book by Rudyard Kipling.
"How little! How naked, and—how bold!" said Mother Wolf, softly. The baby was pushing his way between the cubs to get close to the warm hide. "Ahai! He is taking his meal with the others. And so this is a man's cub. Now, was there ever a wolf that could boast of a man's cub among her children?"
"I have heard now and again of such a thing, but never in our pack or in my time," said Father Wolf. "He is altogether without hair, and I could kill him with a touch of my foot. But see, he looks up and is not afraid."
What does the dialogue between Mother and Father Wolf reveal about the characters?
They think that the man cub is perfectly safe in the jungle.
They feel a tenderness and affection toward the man cub.
They intend to leave the man cub to fend for himself in the jungle.
They are worried that humans will come to find the man cub.
Answer:
not afraid of anything
Explanation:
because whe he was in attcking he was not afraid
What is the net force of this car?
A. 10 N
B. 17 N
C. 0 N
D. 3 N
Answer:
the correct option is D
I need help plz and thank you this is due
Physical Education
Soccer
Assignment Directions:
Research three of the world’s most famous soccer players. Compose a brief visual presentation using PowerPoint to present each player and their accomplishments.
Your presentation should reflect your understanding of the sport as well as the athletic ability needed to be successful.
Assignment Guidelines:
Your presentation should include elements of:
• Childhood
• Work ethic
• Hardships
• Examples from games
• Terminology consistent with the sport
Submission Requirements:
Submit your presentation
When submitting written assignments please remember to:
• Submit the assignment question(s) and your responses.
• Proof-read for spelling, grammar, and punctuation.
• Remember complete sentence structure.
• Paragraphs need to have a minimum of six sentences.
Answer:
hello ...i have a question do u want the presentation completed by the person who is going to answer this question
The kinetic energy of the pom-pom came from potential energy in the system.
How did potential energy gets stored in the spring/pom-pom system?
Answer:
I believe that the answer is that in physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors. Common types of potential energy include the gravitational potential energy of an object that depends on its mass and its distance from the center of mass of another object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field.
The elastic potential energy of a spring is the energy stored in the spring due to its elastic nature.
The potential energy stored in a spring is known as elastic potential energy. The elastic potential energy of a spring is the energy stored in the spring due to its elastic nature.
For example, when a spring is compressed it acquires potential energy which will be converted to kinetic energy of the object impacted by the spring.
The elastic potential energy of spring is given as;
[tex]U_x = \frac{1}{2}kx^2[/tex]
where;
k is the spring constantx is the extension of the spring.Thus, we can conclude that, the elastic potential energy of a spring is the energy stored in the spring due to its elastic nature.
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An example of fluid friction is:
A. ice skating
B. pushing a desk
C.diving into a swimming pool
D. rolling down a hill
Answer:
I would say C.
Answer:
Answer option C) diving into a swimming pool.
Calculate the mass on the following pic
Answer:
1. 25 2. 3.75 3. 21.5
Explanation:
M=FxA
1. 5x5
2. 5x.75
3. 5x4.3
the force on all is 5n
WILL GIVE BRAINLIEST DON'T KNOW IF I SPELLED IT WRONG BUT U KNOW WHAT I MEAN:)
SENTENCE: All mimsy were the borogoves
—"Jabberwocky,"
Lewis Carroll
QUESTION:
What real words could replace the two underlined nonsense words in this sentence?
ANSWERS:
A. sometimes, yellow
B. raining, angry
C. run, heavenly
D. frazzled, creatures
Answer: well jabberwocky means like happy or like good vs evil
Synonyms: abracadabra, double talk, gibberish, gobbledygook, mumbo jumbo, babble, blather, blatherskite, gabble, jabber and jargon
Definition: invented or meaningless language; nonsense.
Explanation:
Answer:
d mark me brainliest plse
Explanation:
If an object has kinetic energy, what must it be doing?
Answer:
It has to be moving in order for it to be kinetic energy and potential energy is when is not moving.
Answer:
The Object Must Be Moving!
Explanation:
Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed.
please help fill in the blank Earth’s axis passes through the (blank) and south poles.
Answer:
North
Explanation:
Have a nice day :)
The narrator of The Jungle Book by Rudyard Kipling portrays the man cub as cute and endearing. How might this characterization be different if Shere Khan were the narrator?
The man cub would be described as a food item, because Shere Khan would want to eat him.
The man cub would be described as friendly, because Shere Khan would want to help him.
The man cub would be described as dangerous, because Shere Khan is scared of humans.
The man cub would be described as smart, because Shere Khan admires human intelligence.
Answer: the answer is C - The man cub would be described as dangerous, because Shere Khan is scared of humans.
Explanation: Because Its The man cub would be described as dangerous, because Shere Khan is scared of humans. Done its rite one I got a 100% on th quiz.
Please help its homework
how high will a ball bounce if its dropped from 50cm
HELP ME ASAP!!! THIS IS DUE IN LIKE 10 MINUTES!!!
Which image shows an inclined plane?
A. A bowling alley with a set of pins at one end.
B. A ping pong table.
C. A bus with a ramp leading down to the ground from its front door.
Answer:
C
Explanation:
It would have to be a bus with a ramp.
Think about it, an inclined slope is kinda like a right triangle, and its a ramp, ramps go down :)
Answer:
Its C
Explanation:
What part (or parts) of this system have kinetic energy?
Answer:
All moving objects have kinetic energy
Explanation:
( that should help....right?)
Answer:
Explanation:
when you crank you make kinetic energy and then the kinetic energy makes potential energy.
Does this help?