Complete the qualitative energy bar chart below for the earth-disk system for the time between when the disk is rolling on the horizontal and when it has rolled up the ramp and is momentarily at rest. Put the zero point for the gravitational potential energy at the height of the center of the hoop when it is rolling on the horizontal surface.
Answers
The energy bar chart for the earth-disk system can be completed as follows:
At t=0, the disk is at the bottom of the ramp and has zero kinetic energy. The gravitational potential energy of the disk is given by the expression:
U_grav = mgh
where m is the mass of the disk, g is the acceleration due to gravity, h is the height of the center of the disk above the ground, and t is the time.
At t=10 seconds, the disk has rolled up the ramp and is momentarily at rest at the top of the ramp. The gravitational potential energy of the disk is still given by the expression above, so the total energy of the system is zero.
At t=20 seconds, the disk is rolling down the ramp and has a non-zero kinetic energy. The gravitational potential energy of the disk is decreasing as the disk loses height, so the total energy of the system is also decreasing.
At t=30 seconds, the disk has rolled off the ramp and is rolling horizontally on the ground. The kinetic energy of the disk is given by the expression:
K = 1/2 * m * \(v^2\)
where m is the mass of the disk and v is its velocity. The gravitational potential energy of the disk is still decreasing as the disk loses height.
At t=40 seconds, the disk has rolled back up the ramp and is momentarily at rest at the top of the ramp. The gravitational potential energy of the disk is still given by the expression above, so the total energy of the system is zero.
At t=50 seconds, the disk has rolled off the ramp and is rolling horizontally on the ground for the second time. The kinetic energy of the disk is still given by the expression above, and the gravitational potential energy of the disk is still decreasing as the disk loses height.
At t=60 seconds, the disk has rolled back up the ramp and is momentarily at rest at the top of the ramp for the second time. The gravitational potential energy of the disk is still given by the expression above, so the total energy of the system is zero.
At t=70 seconds, the disk has rolled off the ramp and is rolling horizontally on the ground for the third time. The kinetic energy of the disk is still given by the expression above, and the gravitational potential energy of the disk is still decreasing as the disk loses height.
At t=80 seconds, the disk has rolled back up the ramp and is momentarily at rest at the top of the ramp for the third time. The gravitational potential energy of the disk is still given by the expression above, so the total energy of the system is zero.
At t=90 seconds, the disk has rolled off the ramp and is rolling horizontally on the ground for the fourth time. The kinetic energy of the disk is still given by the expression above, and the gravitational potential energy of the disk is still decreasing as the disk loses height.
At t=100 seconds, the disk has rolled back up the ramp and is momentarily at rest at the top of the ramp for the fourth time. The gravitational potential energy of the disk is still given by the expression above, so the total energy of the system is zero.
At t=110 seconds, the disk has rolled off the ramp and is rolling horizontally on the ground for the fifth time. The kinetic energy of the disk is still given by the expression above, and the gravitational potential energy of the disk is still decreasing as the disk loses height.
At t=120 seconds, the disk has rolled back up the ramp and is momentarily at rest at the top of the ramp for the fifth time. The gravitational potential energy of the disk is still given by the expression above, so the total energy of the system is zero.
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Full Question ;
The qualitative energy bar chart below shows the change in gravitational potential energy of a disk as it rolls up a ramp. The zero point for the gravitational potential energy is at the height of the center of the hoop when it is rolling on the horizontal surface.
| Time (s) | GPE (J) |
| --- | --- |
| 0 | 0 |
| 5 | 3.5 |
| 10 | 10 |
| 15 | 16.5 |
| 20 | 20.5 |
| 25 | 23.5 |
| 30 | 26.5 |
| 35 | 29.5 |
| 40 | 32.5 |
| 45 | 35.5 |
| 50 | 38.5 |
Related Questions
Can someone please help me with science.
Answers
Answer:
I think it is D or A
Explanation:
I have not done this in a long time, so sorry if wrong.
a drop of oil of volume 10^-10 cubic metre spreads out on water to make a circular film of radius 10^-1 metre. what is the thickness of the film?
Answers
Answer:
\(h=3.18\times 10^{-9}\ m\)
Explanation:
Given that,
The volume of a drop, \(V=10^{-10}\ m^3\)
The radius of the circular film, \(r=10^{-1}\ m\)
We need to find the thickness of the film.
We know that,
Volume, \(V=\pi r^2 h\)
So,
\(h=\dfrac{V}{\pi r^2}\\\\h=\dfrac{10^{-10}}{\pi \times (10^{-1})^2}\\\\h=3.18\times 10^{-9}\ m\)
So, the thickness of the file is equal to\(3.18\times 10^{-9}\ m\).
Which of the following is NOT true about SSD drives compared to mechanical drives?A) they come in much larger storage configurationsB) lower power requirementsC) no moving parts to wear outD) faster access to data
Answers
The statement that is NOT true about SSD drives compared to mechanical drives is they come in much larger storage configurations (Option A).
A solid-state drive (SSD) is a type of storage device that uses NAND-based flash memory to store data. SSDs are faster and more reliable than hard disk drives (HDDs), which store data on rapidly spinning disks. SSD drives typically have smaller storage configurations compared to mechanical drives, but they make up for it with faster access to data, lower power requirements, and no moving parts to wear out. SSD drives have lower power requirements, no moving parts to wear out, and faster access to data compared to mechanical drives, which makes options B, C, and D true.
Thus, the correct option is A.
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Does the youth service project help the community
Answers
Answer:
Yes
Explanation:
Youth play a vital role in service to the community.
A 10cm3 sample of copper has a density of 897g/cm3. What is the mass of the sample?
Answers
A 10cm³ sample of copper has a density of 897g/cm³. What is the mass of the sample ?
Answer:-Given:-Density of sample of copper is 897g/cm³.
Volume of sample of copper is 10cm³.
To Find:-The mass of the sample.
Solution:-We know,
\( { \boxed{\bf{\rm \red {Mass \: = \: Density \: × \: Volume}}}} \)
So, Mass = 897g/cm³ × 10cm³
Mass = 8970 g
The mass of the sample is 8970 g. [Answer]In a friendly soccer game, you hit a ball with a speed of 13 m/s at an angle of 24 degrees above the horizontal. (A) How long does it take for the ball to reach the goal if it is 4.2 meters away? (B) How high is the ball when it reaches the goal?
Answers
a) V= 13m/s at 24 degrees
X component of velocity Vx= V*cos24 =11.876 m/s
distance =4.2 meter
time =distance/speed =4.2/11.876 =0.3537 s
b) Vertical component of speed = Vy=vsin24=
5.29 m/s
s=ut+0.5at^2 =5.29880.3537-0.5*9.8*0.3537^2
=1.257 m above ground
Hope I helped! ヾ(^▽^*)))
Carbon dioxide in the blood is removed from the body through the A. kidneys B. lungs C. mouth D. skin
Answers
Answer:
C) MouthExplanation:
When we inhale air, it contains oxygen. The lungs take in oxygen and the heart and the other body parts use it.Carbon dioxide is removed from the blood mouth when we exhale.(b) After sliding across the horizontal portion of the track, both disks slide partway up the curved section of the track. Identify which disk, if either, reaches a greater maximum height. If both disks reach the same maximum height, state this explicitly.
(c) In a clear, coherent paragraph-length response, justify your answer to part (b).
(d) Consider the case where friction is not negligible and the coefficient of kinetic friction between each disk and the track is the same. The disks are again pushed by the same force over the same distance, and each disk slides partway up the ramp. Identify which disk, if either, would reach a greater maximum height than the other in this case. If both disks reach the same maximum height in this case, state this explicitly. Briefly justify your answer.
Answers
Answer:
(b) In this case, both disks reach the same maximum height.
(d) In this case, the disk with larger mass would reach a greater maximum height than the lighter disk because the gravitational force will be greater and this would be greater than the frictional force that opposes the motion. Therefore, the greater mass disk will be able to overcome the frictional force and reach a greater maximum height.
Hi please, I Have An attachment on Waves, Just two Objective Questions Whoever Answers Will be Marked Brainliest thank you.
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Answer:
The first answer is W and Z, since they appear to be a period apart. Dont know the second question. I did what I could, hope someone can answer the second.
What is the length of the x-component of the vector shown below?
Answers
The length of the x-component of the vector is approximately 48.55 units.
What is the length of the x-component of the vector?To find the length of the x-component of the vector, we need to use trigonometry.
We can use the angle and the magnitude (length) of the vector to find the x-component using the formula:
x-component = magnitude x cos(angle)
Plugging in the values given, we get:
x-component = 52 units x cos(21⁰)
x-component = 52 units x 0.9336
Multiplying these two numbers, we get:
x-component ≈ 48.55 units
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A space station travels 5000 kilometers in 4 hours. What is its speed?
Group of answer choices
20000 kilometers/hour
12500 kilometers/hour
2000 kilometers/hour
1250 kilometers/hour
Answers
Answer:
it is 1250 because it moves 5000 in four hours then it means that it is moving at 1250 an hour
Explanation:
when diving deeper than 40 feet, it is generally advantageous to breathe pure oxygen. true or false
Answers
These mixtures are carefully formulated to reduce the risk of oxygen toxicity and allow for safe and efficient diving at greater depths. False.
When diving deeper than 40 feet, it is not advantageous to breathe pure oxygen. In fact, it can be dangerous and potentially lethal if done for prolonged periods. Oxygen toxicity can occur, which can lead to seizures, unconsciousness, and even death. Instead, divers use specialized gas mixtures that contain a lower percentage of oxygen and higher percentages of other gases such as nitrogen and helium.
When diving deeper than 40 feet, it is generally not advantageous to breathe pure oxygen. Breathing pure oxygen at such depths can lead to oxygen toxicity, which can cause serious health issues or even death. Instead, divers typically use a mixture of gases, such as Nitrox or Trimix, which contain lower concentrations of oxygen and help reduce the risk of oxygen toxicity.
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How does the spring constant influence the displacement? Do they increase or decrease together?
Trial No. Applied Force (N) Displacement is attached (m)
1. 50 N 0.500m
2. 50 N 0.167m
3. 50 N 0.100m
4. 50 N 0.071m
Answers
Explanation:
I have asked question in my profile please tell me the answer
What potential difference is required in an electron microscope to give an electron wavelength of 4.5 nm?
Answers
The potential difference is 0.063 V.
The potential difference is defined as the work done in moving a charge of 1 coulomb from one point to another.
An electron microscope is a microscope that uses an accelerated beam of electrons.
The formula given by De Broglie for the wavelength is as follows:
λ is the wavelength.
λ = h / p
= h / mv
= h / √2×m×q×V
where h is planks constant
q is the charge
m is the mass
4.5 * 10⁻⁹ = 6.63 * 10⁻³⁴ / √(2×9.31×10⁻³¹×1.6×10⁻¹⁹×V)
On solving for V we get
V = 0.063 V
Hence, the potential difference is 0.063 V.
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help me plssssss will give brainliest if correct
Answers
Answer:
electricity is the answer
So I think its Thermal--->Mechanical---->Electrical--->Light
Thermal from the Burner, Mechanical energy from the steam turns the wheel, Electrical energy through the wires and then light comes from the bulb.
Hope this helps :)
A 0.225 kg block of iron at -28.7 °C is put in a cup of 0.150 kg of water at 18.9 °C. What is their equilibrium temperature?
Answers
Answer:
12.3°C should be the correct answer
Answer:
12.3
Explanation:
What is a scientific law?
Answers
Answer:
In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory. It is a misconception that theories turn into laws with enough research.
Explanation:
hope you get it right
:)
Answer: Found this in google. Statement based on repeated experiments or observations, that describe or predict a range of natural phenomena. Hope this helps!
Explanation:
a sound wave strikes a wall normally what is the angle of reflection of sound wave
a 90°
b 60°
c 45°
d 0°
Answers
Answer:
C
Explanation:
The air in your classroom has
a.) mass
b.) volume
c.) weight
d.) all of the above
e.) none of the above
Answers
driving in the right lane of a four lane highway at 55 mph, you come upon a pickup truck carrying furniture. a large chair falls out of the back of the truck into your lane. how should you avoid this collision?
Answers
The collision can be avoided by steering the truck to the left.
Collision is a case where one moving object or person violently collides with another.
If you are driving in the right lane of a four lane highway at 55 mph, you come upon a pickup truck carrying furniture. a large chair falls out of the back of the truck into your lane, you should adopt the following actions:
Stay calm. If necessary, slow down to avoid a collision Gently lower yourself back to a safe distance.Since the pickup truck is coming upon into the right lane, so you must steer your vehicle towards left side so as to avoid collision.
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Electron cloud definition
Answers
ANSWER:
STEP-BY-STEP EXPLANATION:
\(\)The imput force of 11 n acting on the effort arm of a lever moves 0.4 m, which lifts a 40n
weight resting on the resistance arm a distance of 0.1m. what is the efficiency of the
machine?
a. 1.1%
b. 11%
c. 90.9%
d. 0.909%
Answers
The efficiency of the machine is approximately 90.9%. Therefore option (c) is correct. The efficiency of the machine, which is the ratio of output work to input work, is approximately 90.9%. This means that about 90.9% of the input work is effectively utilized to perform the desired task of lifting the weight.
The efficiency of a machine is defined as the ratio of output work to input work, expressed as a percentage. The formula for efficiency is: efficiency = (output work / input work) × 100%.
Given:
Input force (F1) = 11 N
Effort arm distance (d1) = 0.4 m
Weight (resistance force, F2) = 40 N
Resistance arm distance (d2) = 0.1 m
To calculate the work done by the input force, we use the formula: input work = input force × input distance.
Input work = F1 × d1 = 11 N × 0.4 m = 4.4 J
Similarly, to calculate the work done by the weight, we use the formula: output work = output force × output distance.
Output work = F2 × d2 = 40 N × 0.1 m = 4 J
Now, we can calculate the efficiency:
Efficiency = (output work / input work) × 100%
Efficiency = (4 J / 4.4 J) × 100% ≈ 90.9%
Therefore, the efficiency of the machine is approximately 90.9%.
The efficiency of the machine, which is the ratio of output work to input work, is approximately 90.9%. This means that about 90.9% of the input work is effectively utilized to perform the desired task of lifting the weight. The calculations involve finding the input work done by the input force and the output work done by the weight. By dividing the output work by the input work and multiplying by 100%, we obtain the efficiency percentage. In this case, the efficiency is approximately 90.9%.
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The carbon atom with 12 protons and 12 electrons has a charge of:
a. 1 C
b. +12 C
c. -1 C
d. 0 C
e. -12 C
Answers
Answer:
Isotopes are the elements having the same atomic number i.e same number of protons which in turn is equal to same number of electrons. Number of protons and electrons are equal as the atom is electrically neutral. So, the only option is A.
I hope it helps you !
What happens to the force of gravity between two masses if they are moved closer?
It fluctuates.
It decreases.
It stays the same.
It increases.
Answers
The force of gravity between two masses increases as they are moved closer together.
option D.
What is Newton's law of universal gravitation?Newton's law of universal gravitation states that the magnitude of the force between two masses is directly proportional to the product of the two masses and inversely proportional to the square of the distance between them.
F = GM²/R²
where;
M is massR is the distance between the massesThe force of gravity between two masses increases as they are moved closer together. This is because gravity is an attractive force that depends on the distance between the masses.
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what is the mass of 6 pennies
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a balloon, of negligible mass, is submerged in a container of water and tied to a dynamometer as in Figure 3.53. What is the volume of the balloon if the dynamometer scale is in newtons?
Answers
Answer: a balloon, of negligible mass, is submerged in a container of water and tied to a dynamometer as in Figure 3.53. What is the volume of the balloon if the dynamometer scale is in newtons?
Explanation:
Your friend wants to go ice skating but is afraid she'll fall. You decide to gently push her with a force of 45N a distance of 9m. What kind of work is being done by the force of friction?
Answers
In this scenario, the work being done by the force of friction can be classified as negative work.
Work is defined as the transfer of energy that occurs when a force is applied to an object and it moves through a displacement. The formula for calculating work is W = F * d * cos(theta), where W represents work, F is the magnitude of the force, d is the displacement, and theta is the angle between the force and the direction of the displacement.
In this case, the force being applied is 45N, and the displacement is 9m. The force of friction acts in the opposite direction to the motion, which means it is opposing the movement of your friend as she is being pushed. Therefore, the angle between the force of friction and the direction of displacement is 180 degrees.
When cos(\(180\) degrees) is evaluated, it results in a value of -1. This negative value indicates that the force of friction is acting opposite to the displacement. As a result, the work done by the force of friction is negative.
Negative work signifies that the force of friction is absorbing energy from the system instead of adding energy to it. In the context of your friend's ice skating, the negative work done by the force of friction represents the dissipation of energy as heat due to the resistance between the ice and the skates. This resistance slows down your friend's motion and makes it more difficult for her to maintain her speed or accelerate.
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While eating lunch high up in a skyscraper, two construction workers calculate their gravitational potential
energies, and find them to be equal. If the lighter construction worker has a mass of 90kg, and the other worker
is twice as high up in the skyscraper, what is the mass of the other worker?
Answers
Answer:
The mass of the other worker is 45 kg
Explanation:
The given parameters are;
The gravitational potential energy of one construction worker = The gravitational potential energy of the other construction worker
The mass of the lighter construction worker, m₁ = 90 kg
The height level of the lighter construction worker's location = h₁
The height level of the other construction worker's location = h₂ = 2·h₁
The gravitational potential energy, P.E., is given as follows;
P.E. = m·g·h
Where;
m = The mass of the object at height
g = The acceleration due to gravity
h = The height at which is located
Let P.E.₁ represent the gravitational potential energy of one construction worker and let P.E.₂ represent the gravitational potential energy of the other construction worker
We have;
P.E.₁ = P.E.₂
Therefore;
m₁·g·h₁ = m₂·g·h₂
h₂ = 2·h₁
We have;
m₁·g·h₁ = m₂·g·2·h₁
m₁ = 2·m₂
90 kg = 2 × m₂
m₂ = (90 kg)/2 = 45 kg
The mass of the other construction worker is 45 kg.
The image shows landforms in Monument Valley, Utah.
Which correctly lists the three features shown in the photo?
folds, strike-slip faults, and anticlines
anticlines, synclines, and folds
synclines, normal faults, and strike-slip faults
normal faults, folds, and anticlines
Answers
The correctly lists the three features shown in the photo is folds, strike-slip faults, and anticlines.
What is the difference between folds and failures?Modern folds are those that emerged recently (on the scale of geological periods), that is, in the Tertiary Period (between 65 million and 2.5 million years ago). Faults are geological structures that originate from vertical (top-down) or inclined internal forces.
The transcurrent fault – also called horizontal fault – occurs when there is displacement in the horizontal plane between the two blocks, being more common in zones where two tectonic plates meet, when these also move horizontally.
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Answer: folds, strike-slip faults, and anticlines. (A)
Explanation: Got it right on my exam on Edge.
120 grams of radioactive substance, and now you have 15 grams, how many half lives passed
Answers
you can use formula:
\(\tt N_t=(\dfrac{1}{2}^n)N_o\\\\N_t=final\:mass\\\\N_t=initial\:mass\\\\n=number\:of\:half-life\)
Input the value:
\(15=120(\dfrac{1}{2}^n)\\\\\dfrac{15}{120}=\dfrac{1}{2}^n\\\\\dfrac{1}{8}=\dfrac{1}{2}^n\\\\\dfrac{1}{2}^3=\dfrac{1}{2}^n\Rightarrow \boxed{\bold{n=3\:half-lives}} \)