Which of these is an example of chemical energy being converted to mechanical energy?
eating breakfast then walking to the bus.
turning on the radio
piling wood and then making a fire
Answer:
Eating breakfast then walking to the bus
A bicyclist with a mass of 50 kg is traveling at a rate of 30 m/s. It accelerates to a rate of 50 m/s in 5 seconds. What is the net force acting on the bicycle?
Answer:
200 N
Explanation:
There is only two needed factors in play here; the mass and acceleration
According to Newton's 2nd Law: F = m*a
Now Acceleration is Velocity over Time, so we have another factor in play: Acceleration = 50-30/5 = 20/5 = 4m/s^2
Net force = (50 kg)(4 m/s^2) = 50*4 = 200 Newtons
5. If you were asked to give an example of kinetic and potential energy, which of the
following would be the best choice.
A. An example of kinetic energy is Dwayne Wade scoring a layup at a Heat game while an
archer pulling the string all the way back on a bow and arrow is an example of potential
energy
B. An example of kinetic energy is a roller coaster at its fastest speed but the roller coaster
at its slowest speed is an example of potential energy.
C. An example of kinetic energy is a ball rolling in the street and a baby crawling is an
example of potential energy.
D. An example of kinetic energy is airplane flying in the sky while running water is an
example of potential energy.
Answer:
D or B i think!
Explanation:
Answer:
B
Explanation:
Is it true that acceleration occurs when there is a change in speed
Answer:
Acceleration is the rate of change of velocity.
Explanation: For example, acceleration is measured in m/2^2 or meters per second squared. That can also be split up into 2 components. M/s is how speed is measured, and since acceleration is the rate of change of velocity, m/(s*s). You could say that since acceleration is m/s^2, it can also be represented as how much the speed increases over 1 second. if there was an acceleration of 3 m/s^2, the rate of change of speed would be 3m/s every second, meaning that the object would speed up 3m/s every second that passes by.
Hope this helps!
Which is a feature of a cladogram?BY MOHAMED
I GIVEING A !)) 100 point RIGHT NOW ASP
Answer:
Constructed cladograms all typically share certain key features: Root – The initial ancestor common to all organisms within the cladogram (incoming line shows it originates from a larger clade) Nodes – Each node corresponds to a hypothetical common ancestor that speciated to give rise to two (or more) daughter taxa.
Explanation:
Answer:
one feature of a cladogram is a branch that shows you relations among animals
Explanation:
What type of circuit is seen in this picture?
-Open
-Parallel
-Series
-AC
it's a. open circuit
Answer:
A) Open
Explanation:
Discuss the difference between short-term and long-term fitness goals. Provide an example of each
Answer:
. A long-term goal is a goal set for you to achieve with 3-5 years, while short-term goals take a few days, weeks, or maybe months. An example of a short-term is eating like less carbs. An example of a long-term running like a 5k marathon.
PLZ HELP ME
Which event was a major source of atmospheric oxygen?
photosynthesis
decomposition of water
volcanic eruptions
outgassing
Answer:
photosynthesis
Explanation:
I just took the midterm and got it correct :))
PLZ MAKE BRAINLIEST, thank youuu <3
what power is transmitted by 2A flowing across 5V
Answer:
[tex]\huge\boxed{10\:watts}[/tex]
Explanation:
Power = Current × Voltage
P = I × V
P = 2 × 5
P = 10 watts
How many significant figures in 0.00850
Answer:
5
Explanation:
A duck is floating in a pond. How does Archimedes' description of the buoyant force explain why the duck
doesn't sink?
PLEASE HURRY
Answer:
The upthrust or buoyant force helps the duck doesn't sink.
For example, there is a duck which weighs 3 pounds and tree pints of water also weigh three pounds. In this case the volume of the duck is more than the volume of three pints of water, so the duck floats.
Hope it helps!<3
A weightlifter completes a series of lifts with a 700 N weight. In one lift, he raises the weight to a height of 2.5 m off the ground. The lift takes 0.60 s to complete. What power does the weightlifter have been performing this lift
Answer:
The output power the weightlifter is 2916.67 W.
Explanation:
Given;
weight lifted, W = 700 N
height the weight is lifted, h = 2.5 m
time taken to lift the weight, t = 0.60 s
The output power the weightlifter is calculated as;
Power = Energy applied / time taken
Energy applied = weight lifted x height the weight is lifted
Energy applied = 700 x 2.5
Energy applied = 1750 J
Power = 1750 / 0.6
Power = 2916.67 J/s = 2916.67 W.
Therefore, the output power the weightlifter is 2916.67 W.
What is the Kinetic Energy of a 150 kg object that is moving with a speed of 15 m/s?
Group of answer choices
1. KE = 22,050J
2. KE = 1,125J
3. KE = 33,750J
4. KE = 16875J
What does a represent??
I need it quick
Answer:
a is acceleration
Explanation:
I Need Help with this certain question
Answer:
Explanation:
The answer it would be D because there are multyple light waves travelling.
Thanks
Periodontal diseases in teeth and osteoarthritis are common problems that show up on skeletal remains.
O A. True
OB.
False
why we can not measure the total amount of heat energy that a body contains
Answer:
... As has been previously discussed, heat is not something that is contained in an object.
Explanation:
Why doesn’t the force you exert when sitting on a chair cause the chair to move?
a. The floor exerts a balancing force on the chair.
b. The floor exerts too much force on the chair
c. The floor exerts an unbalancing force on the chair.
d. The floor exerts no force on the chair.
Answer:
the answer is A
Explanation:
The force of air particles over an area is ________
temperature.
pressure.
volume.
kelvins.
Hamid is viewing an image of a bird produced by a set of concave lenses. What must be true about the image? It is a virtual image. It is upside down. It is larger than the actual bird. It is capable of being projected.
The true statement about the image formed by the concave lens is virtual.
Properties of image of formed by a concave lens
The properties of image of formed by a concave lens include the following;
The images are always;
virtual, erect, and diminishedThus, the true statement about the image formed by the concave lens is virtual.
Learn more about concave lens here: https://brainly.com/question/3140453
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Answer:
it mf a i think
Which of the following units are the Standard International units for
displacement?
A. Meters (m)
B. Meters per Second (m/s)
C.Meters per Second Squared (m/s2)
D. Seconds per Meter (s/m)
help me do this question
Answer:
c20800
Explanation:
go to bear khana bro your book looks cheap go and study in durbar kanda school and take somee cash and do ash ah boy
Need some help with homework but where doing it in class rn
Answer:
now it lets me. B
Explanation:
hope that helps
Plz di all plz i will give brainest and thanks to best answer do it right
An example of something that stores chemical energy is? A. Lightning. B.Microwave C.Battery D. Light
Answer:
battery
Explanation:
Which one is an example of a force pushing downward toward the ground.
Group of answer choices
A man pulled weeds in his garden
A woman moved her child from one place to another in a wagon
A bird sat on a telephone wire
A dog tugged on a rope held by a child
Answer: A woman moved her child from one place to another in a wagon
or A bird sat on a telephone wire
Explanation:
what is a gram used to measure
Answer:
The gram is the basic unit of measurement
Explanation:
You use it to weigh small items such as sugar, flour, coffee, and other items that are similar.
If you want to measure in grams using a scale is the most accurate solution.
(have a nice day!)
Describe how the properties of sound waves change as they spread out in a spherical pattern.
To solve this we must be knowing each and every concept related to sound waves. Therefore, a sound waves change as they spread out in a spherical pattern, they go up and down.
What is sound waves?A sound is a type of energy or a vibration that moves through a material such as air or water. Sound may pass through with a gaseous medium as well. It is anything that is audible. The speed that sound varies depending on the medium.
A wave is a medium that transmits energy from one location to another. Waves are classified into three types: transverse waves, longitudinal waves, or surface waves. A sound waves change as they spread out in a spherical pattern, they go up and down.
Therefore, a sound waves change as they spread out in a spherical pattern, they go up and down.
To know more about sound waves, here:
https://brainly.com/question/29767263
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NEED HELP URGENT!!!
These 2
Answer:
Acceleration & 9.8 M/S/S
Explanation:
Pretty self explanatory for question 2, speeding up can easily be related to acceleration, and for question 3
"Its value is 9.8 m/s2 on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s2. When discussing the acceleration of gravity, it was mentioned that the value of g is dependent upon location. There are slight variations in the value of g about earth's surface."
Hope it helped - rida
Explain how sound travels from your vocal cords to your friend’s ear when you talk
Answer:
Your vocal cords vibrate and then travel through the air to your friends ear. ... loudness is a humans perception of sound intensity, as intensity of a sound wave increases the loudness of a sound wave increases.
~+lil more info+~
Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum. The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear.
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