Answers
Answer:
True
Explanation:
There is an applied force by the hands that are not in the system. This force generate potential energy in the system. So, it is true that the system is gaining the ability to cause change from outside the system.
Related Questions
imagine that you have an electric car and all of the recaptured energy is put back into the battery that powers your car what speed could your car cheat from rest by using only the recaptured energy from part B
Answers
Answer:
Moving vehicles have a lot of kinetic energy, and when brakes are applied to slow a vehicle, all of that kinetic energy has to go somewhere.
Explanation:
what most influenced transcendentalism way of thinking
Answers
Answer:
Transcendentalism was greatly influenced by various philosophical and religious ideas, including:
German Idealism: Transcendentalism was heavily influenced by the works of German philosophers such as Immanuel Kant and Friedrich Schelling, who stressed the importance of the individual and the power of the human mind to comprehend the world.
Romanticism: Transcendentalists also drew on the ideas of the Romantic movement, which emphasized the importance of emotion, intuition, and imagination in the human experience.
American Romanticism: Transcendentalism was a product of the American Romantic movement, which rejected the materialism and commercialism of American society in the 19th century and sought to elevate the individual, nature, and spiritual experience.
Eastern philosophy and religion: Transcendentalists were influenced by the teachings of Hinduism and Buddhism, particularly the concept of transcendence, which emphasizes the individual's ability to transcend the limitations of the material world and connect with a higher spiritual reality.
Overall, transcendentalism was shaped by a diverse range of ideas and thinkers, reflecting its emphasis on individualism, intuition, and spiritual experience.
You preform an experiment to measure the speed of a car overtime. the data are shown in the table below. What graph shows the data from this experiment?
Answers
Answer:
C
Explanation:
Check for coordinates of the VT graph in C part. The information matches with the table.
Based on the diagram, why does the lightbulb light when the loop rotates, and what is the energy change involved?
When the wire moves in an electric field, electrons in the wire move and become mechanical energy. The mechanical energy causes the light to glow. Electrical energy used to rotate the loop is converted to light energy.
When the wire moves in an electric field, electrons in the wire move and become mechanical energy. The mechanical energy causes the light to glow. Electrical energy used to rotate the loop is converted to light energy.
When the wire moves in a magnetic field, electrons in the wire move and become an electric current. The current causes the light to glow. Mechanical energy used to rotate the loop is converted to electrical energy.
When the wire moves in a magnetic field, electrons in the wire move and become an electric current. The current causes the light to glow. Mechanical energy used to rotate the loop is converted to electrical energy.
When the wire moves in an electric field, electrons in the wire move and become mechanical energy. The mechanical energy causes the light to glow. Mechanical energy used to rotate the loop is converted to electrical energy.
When the wire moves in an electric field, electrons in the wire move and become mechanical energy. The mechanical energy causes the light to glow. Mechanical energy used to rotate the loop is converted to electrical energy.
When the wire moves in a magnetic field, electrons in the wire move and become an electric current. The current causes the light to glow. Mechanical energy used to rotate the loop is converted to light energy.
Answers
Answer:
Based on the information provided, the lightbulb lights when the loop rotates because the movement of the wire in an electric or magnetic field causes electrons in the wire to move and become either mechanical energy or an electric current. This energy causes the light to glow. The energy change involved is the conversion of electrical or mechanical energy used to rotate the loop into either light or electrical energy
Explanation:
Describe how the composition of gasses changes as you travel up through the Earth’s atmosphere.
Answers
Answer:
As you travel up through the Earth's atmosphere, the composition of gases changes. Near the Earth's surface, the atmosphere consists mainly of nitrogen (about 78%) and oxygen (about 21%) with traces of other gases like carbon dioxide and argon. As you go higher, the amount of oxygen decreases, and the concentration of other gases becomes more prominent, such as helium, hydrogen, and ozone.
A physics student sits in a chair. The chair pushes up on the student's body. Identify the other force of the interaction force pair.
Answers
Answer:
The other force is the weight of the student.
Explanation:
With respect to Newton's third law of motion, for the student to sit and balance on the chair, there must be two equal and opposite forces involved. The student applies his/ her weight on the chair which acts downwards, while the chair applies an equal but opposite force to the weight of the student.
The force applied by the chair on the student's body is counter balanced by the student's weight. Note that, if the weight of the student is greater than the opposing force from the chair, the chair would collapse.
Suppose that a sound source is emitting waves uniformly in all directions. If you move to a point twice as far away from the source, the frequency of the sound will be:________.
a. one-fourth as great.
b. half as great.
c. twice as great.
d. unchanged.
Answers
Answer:
d. unchanged.
Explanation:
The frequency of a wave is dependent on the speed of the wave and the wavelength of the wave. The frequency is characteristic for a wave, and does not change with distance. This is unlike the amplitude which determines the intensity, which decreases with distance.
In a wave, the velocity of propagation of a wave is the product of its wavelength and its frequency. The speed of sound does not change with distance, except when entering from one medium to another, and we can see from
v = fλ
that the frequency is tied to the wave, and does not change throughout the waveform.
where v is the speed of the sound wave
f is the frequency
λ is the wavelength of the sound wave.
If a wave is traveling at 60 cm/second and has a wavelength of 15 cm, what is the frequency?
A. 900 Hz
B. 60 Hz
C. 8 Hz
D. 4 Hz
Answers
Answer: B
G v = 60 cm/s λ = 15 cm E f = V / λ S f = 4 Hz U f = ? S f = (60 cm/s) / 15 cm 5.
Explanation:
24. An elevator is moving vertically up with an acceleration a. The force exerted on the floor by a passenger of mass m is
(a) mg (b) ma (c) mg - ma (e) none of these (d) mg + ma
Answers
Given :-
An elevator is moving vertically up with an acceleration a.To Find :-
The force exerted on the floor by a passenger of mass m .Solution :-
As the man is in a accelerated frame that is non inertial frame , we would have to think of a pseudo force .
The direction of this force is opposite to the direction of acceleration the frame and its magnitude is equal to the product of mass of the concerned body with the acceleration of the frame .For the FBD refer to the attachment . From that ,
\( \implies Weight_{apparent}= mg + ma \)
Hence option d is correct choice .
I hope this helps .
Differentiate between angular displacement and linear displacement.
Answers
Answer:
The angular displacement is not a length (not measured in meters or feet), so an angular displacement is different than a linear displacement. ... As the object rotates through the angular displacement phi, the point on the edge of the disk moves distance sa along a circular path.
11. Find the direction of the Force
Answers
Answer:
We answer that before but I forgot
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02:21:09
Which is one characteristic shared by electromagnetic and mechanical waves?
Both have a frequency and amplitude.
Both move due to particles bumping into each other.
Both are formed by charged particles.
Both occur as a result of a disturbance.
Answers
Both types of waves, electromagnetic and mechanical, involve the transfer of energy through a mediumor through space. Option D
One characteristic shared by electromagnetic and mechanical waves is that both types of waves occur as a result of a disturbance. Waves, in general, are a means of transferring energy from one location to another without the physical displacement of particles.
Whether it's an electromagnetic wave or a mechanical wave, there needs to be a disturbance or source of energy that initiates the wave.
In the case of electromagnetic waves, such as light waves or radio waves, the disturbance is the oscillation of electric and magnetic fields. These fields interact with each other and propagate through space, carrying energy with them.
The disturbance can be caused by various sources, such as the acceleration of charged particles or the vibrations of atoms or molecules.
On the other hand, mechanical waves, such as sound waves or water waves, require a medium (substance) to propagate. The disturbance in mechanical waves is the vibration or oscillation of particles in the medium. For example, in a sound wave, the disturbance is the back-and-forth movement of air molecules caused by a vibrating object.
Both types of waves, electromagnetic and mechanical, involve the transfer of energy through a medium (in the case of mechanical waves) or through space (in the case of electromagnetic waves). They both require a disturbance to initiate the wave and share the fundamental property of wave motion. Option D
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The resistance RT of a platinum varies with temperature T(°C), as measured on the constant-volume gas thermometer according to the equation RT = Ro(1+AT+BT^2). Where A = 3.8×10^-3°C^-1 and B = -5.6×10^-7°C^-2. Calculate the temperature that would be on indicated on a platinum thermometer, when the gas scale reads 200°C.
Answers
The resistance indicated by the platinum thermometer at 200°C is 1.648 times the reference resistance Ro at 0°C.
The given equation is RT = Ro(1+AT+BT²), where A = 3.8×10⁻³°C⁻¹ and B = -5.6×10⁻⁷°C⁻². To determine the temperature that would be indicated on a platinum thermometer when the gas scale reads 200°C, we will have to use the given formula. RT = Ro(1+AT+BT²) .....(i)We know that the gas scale reads 200°C. Therefore, we can substitute T = 200°C in equation (i).RT = Ro (1 + A × 200 + B × 200²) = Ro (1 + 0.76 - 0.112) = Ro (1.648)Thus, the resistance that the platinum thermometer would indicate is 1.648 times the reference resistance Ro at 0°C. This is the solution to the problem.In summary, The given equation is RT = Ro(1+AT+BT²), where A = 3.8×10⁻³°C⁻¹ and B = -5.6×10⁻⁷°C⁻². To determine the temperature that would be indicated on a platinum thermometer when the gas scale reads 200°C, we substituted T = 200°C in equation (i) to get RT = Ro (1 + A × 200 + B × 200²) = Ro (1 + 0.76 - 0.112) = Ro (1.648).For more questions on thermometer
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What is the target heart rate for a 24 year old?
Answers
Answer:
196
Explanation:
subtract 24 from 220 to get your answer.
Answer:
100 beats for minute
Explanation:
Adults ( age 18 and over) 60 - 100 beats per minute
What is the smallest organism?
Answers
A disk of a radius 50 cm rotates at a constant rate of 100 rpm. What distance in meters will a point on the outside rim travel during 30 seconds of rotation?
Answers
Answer:
the distance in meters traveled by a point outside the rim is 157.1 m
Explanation:
Given;
radius of the disk, r = 50 cm = 0.5 m
angular speed of the disk, ω = 100 rpm
time of motion, t = 30 s
The distance in meters traveled by a point outside the rim is calculated as follows;
\(\theta = \omega t\\\\\theta = (100 \frac{rev}{\min} \times \frac{2\pi \ rad}{1 \ rev} \times \frac{1\min}{60 s} ) \times (30 s)\\\\\theta = 100 \pi \ rad\\\\d = \theta r\\\\d = 100\pi \ \times \ 0.5m\\\\d = 50 \pi \ m = 157.1 \ m\)
Therefore, the distance in meters traveled by a point outside the rim is 157.1 m
The acceleration of gravity on the
Moon is 1.62 m/s2. The mass of the
Moon is 7.35 x 1022 kg. From this
information, what is the radius of the
Moon?
Answers
Answer:
1.74 x 10^6
Explanation:
Brainliest :)
The approximate radius of the Moon is \(1.736 * 10^7\) meters, or 17,360 kilometers.
To find the radius of the Moon, we can use Newton's law of universal gravitation, which relates the acceleration due to gravity (g) to the mass of the celestial body (M) and the distance (radius, r) between the center of the body and the object experiencing the gravitational force.
The formula for the acceleration due to gravity on the surface of a celestial body is:
\(g = G * (M / r^2),\)
where:
g = acceleration due to gravity on the Moon's surface (\(1.62 m/s^2\)),
G = universal gravitational constant (approximately\(6.67430 * 10^{-11\) m^3/kg/s^2),
M = mass of the Moon (\(7.35 * 10^{22\) kg), and
r = radius of the Moon (what we want to find).
Let's rearrange the formula to solve for the radius (r):
\(r^2\) = G * (M / g).
Now, we can plug in the known values:
\(r^2 = (6.67430 * 10^{-11} m^3/kg/s^2) * (7.35 * 10^{22} kg / 1.62 m/s^2)\).
Calculate the value of \(r^2\):
\(r^2\) ≈ \(3.018 * 10^{14} m^2.\)
Finally, take the square root of both sides to find the radius (r):
r ≈ \(\sqrt{(3.018 * 10^{14} m^2)\)≈ \(1.736 * 10^7\) meters.
So, the approximate radius of the Moon is\(1.736 * 10^7\) meters, or 17,360 kilometers.
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Where does a body have more weight the poor at the eqator of the earth.
Answers
Answer:
Explanation:
Your body weighs more at the pole for two important reasons. Both have to do to the spin of the earth on its axis.
Because of its spin the earth is thicker around the equator than it is through the poles. This means that when you stand on the equator, you are farther away from the center of earth than you would be at the poles. As gravity decreases with the inverse of the square of distance, gravity will be weaker at the equator.
As you are also spinning with the earth, you will have a required centripetal acceleration and force to keep you attached to the ground, This force decreases the effect of gravity so again, you would weigh less at the equator.
A chemical reaction separates water into hydrogen gas and oxygen gas. Which of the following statements is true about the mass of the water and the combined mass of the two gases
Answers
Answer:
The mass of the water is greater than the combined mass of the two gases
Naomi has increased the pressure on a solution of liquid and gas in a closed container. What will this do to the gas in her solution?
increase the amount
decrease the amount
increase the temperature
decrease the temperature
Answers
The pressure Naomi applied will increase the amount of the gas in her solution, first option.
What is the law of gas solubility?According to Henry's law of solubility, when the pressure is applied to a solution containing gas and liquid, the gas rises in volume which means gas solubility increases with increased pressure. Also according to this law, decrease in temperature means increase in gas solubility.
This is as a result of the concentration of molecules in gas. The concentration of gas molecules in a solution are also higher at high pressures at equilibrium.
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Answer: Increasing the pressure will increase the amount of gas held in her solution.
Explanation:
When no pressure was applied, then the gas molecules were moving freely into the solution. That is the molecules of gas were far apart from each other.
On increasing the pressure, the gas molecules come closer to each other into the solution. This means that when no pressure was applied then there were less number of gas molecules into the solution.
Later, when pressure is applied then the number of gas molecules increases in the solution as they come closer to each other.
kari ann is pulling a bookcase across her bedroom floor. what are three reasons that she might find it hard to accelerate the bookcase? (hint: link to both labs as well as newton's 1st law)
Answers
Three reasons why it may be difficult to accelerate the bookcase are;
1) Inertia that acts on the book case
2) Frictional force that prevents the book case from moving
3) The weight of the book case.
Why is there difficulty in moving the suitcase?We know that the Newton law states that a body would tend to remain at a state of rest or uniform motion unless it is acted upon by unbalanced forces. When the book lies without movement it is acted upon by its weight and the reaction which are exactly balanced. The inertia is the reluctance of the book to move.
As the book begins to move when pull, the friction that is acting on the pull would also militate against the forward motion of the book as it acts in the opposite direction.
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At the end of the _____ era matter and antimatter annihilate each other. Because of a small imbalance in the ratio, the universe is left with only ______.
Answers
At the end of the Electroweak era, matter and antimatter annihilate each other. Because of a small imbalance in the ratio, the universe is left with only matter.
What is baryogenesis process?The baryogenesis process refers to the hypothetical mechanism or mechanisms that generated the observed baryon asymmetry in the universe which refers to the fact that there is much more matter than antimatter
If the universe were perfectly symmetric between matter and antimatter the particles and antiparticles would have annihilated each other completely leaving behind only radiation.
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If an elevator accelerates upward at 10 ms−2 , what is the average blood pressure in the brain? What is the average blood pressure in the feet? If the elevator accelerates downward with the same acceleration, what is the average blood pressure in the brain and feet? take g = 10
Answers
The average blood pressure in the brain will be higher than the average blood pressure in the feet. the average blood pressure in the brain will be lower than the average blood pressure in the feet.
When the elevator accelerates upward at \(10 ms^{-2}\), the blood pressure in the brain and feet of a person changes.
Similarly, when the elevator accelerates downward with the same acceleration, the blood pressure in the brain and feet of a person changes.
Let's discuss them one by one:Blood Pressure When Elevator Accelerates Upward at \(10 ms^{-2}\)
When the elevator accelerates upward at \(10 ms^{-2}\), the blood pressure in the brain of a person increases, while the blood pressure in the feet of a person decreases.
This happens due to the gravitational force acting on the body.
Since the gravitational force on the head is greater than the gravitational force on the feet, the blood pressure in the brain increases while the blood pressure in the feet decreases.
Therefore, the average blood pressure in the brain will be higher than the average blood pressure in the feet.
Blood Pressure When Elevator Accelerates Downward at \(10 ms^{-2}\) When the elevator accelerates downward at \(10 ms^{-2}\), the blood pressure in the brain of a person decreases, while the blood pressure in the feet of a person increases.
This also happens due to the gravitational force acting on the body. Since the gravitational force on the head is less than the gravitational force on the feet, the blood pressure in the brain decreases while the blood pressure in the feet increases.
Therefore, the average blood pressure in the brain will be lower than the average blood pressure in the feet.
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Why can Muhammad exert a greater punching force with his bare fist than he can while wearing a
boxing glove?
Answers
Answer:
the glove could be heavy so slowing down his power
Explanation:
JUST GUESSED
Okay, so I was searching the Internet and I happened to come across that keeping bird feathers are illegal. (fyi I took feathers a lot of times when I was younger especially eagle feathers) . why
Answers
What must you know about a nuclear reaction to calculate the amount of energy it will produce?
A. The difference between the total nuclear mass before and after the reaction.
B. The product of the total nuclear mass before and after the reaction
C. The Sum of the total nuclear mass before and after the reaction.
D. The ratio of total nuclear mass before the reaction to the total nuclear mass after the reaction.
Answers
In a nuclear reaction, to calculate the amount of energy it will produce, you must know the difference between the total nuclear mass before and after the reaction.
option A is the correct answer.
What is mass defect?Mass defect is the difference between the predicted mass and the actual mass of an atom's nucleus.
In this scenario the actual atomic mass is less than the predicted mass which is calculated by adding the masses of nucleons.
The mass defect represents the energy that was released when the nucleus of an atom is formed.
The amount of energy released in a nuclear reaction is calculated as;
E = Δmc²
where;
Δm is the mass defect or change in mass of the atomsc is the speed of lightThe above equation is known as Einstein binding energy equation.
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I was having trouble with this physics question
Worth 15 points
Answers
Answer:
68.79 N, 13.84° N of W
Explanation:
The law of cosines can be used to find the magnitude of the sum. F1 is 30° N of W, and F2 is 30° S of W, so the exterior angle of the force triangle is 30°+20° = 50°. The interior angle is the supplement of that. The angle between F1 and F2 in the force triangle representing the sum is 130°, so the sum of forces is ...
|F|^2 = |F1|^2 +|F2|^2 -2·|F1|·|F2|·cos(130°)
= 50^2 +25^2 -2·50·25·cos(130°) ≈ 4731.969
|F| ≈ √4731.969 ≈ 68.79 . . . . newtons
The angle α between F and F1 can be found from the law of sines.
sin(α)/|F2| = sin(130°)/|F|
α = arcsin(|F2|/|F|·sin(130°)) ≈ 16.16°
The diagram shows this to be the angle south of F1, so the angle of the sum vector F is 30° -16.16° N of W = 13.84° N of W.
The resultant force vector is 68.79 N at an angle of 13.84° N of W.
Answer:
68.98N, 13.8° N of W
Explanation:
The Forces F1+ F2 = 50N 30°N of W + 25N 20°S of W.
This forces can be split into horizontal and vertical components and are sum as such.
The horizontal and vertical component of F1 are;
50N cos 30= 43.30N W
50N sin 30 = 25N
The horizontal and vertical component of F2 are;
25N cos20°=23.49N West
25N sin20°=8.55N South
Sum of horizontal forces =43.30N+23.49 = 66.99N
Sum of vertical forces =25-8.55=16.45N{North is at the positive side of the y axis and South at the negative side}
The resultant sum of this forces is √(66.99)^2 + (16.45)^2=√4758.26=68.98N
The angle at which this force moves is Tan^{-1} 16.45/66.99 = 13.8° N of W
The Force therefore is 68.98N, 13.8° N of W
PLEASE I NEED HELP CLICK ON THIS IMAGE
Answers
I believe you are incorrect. A weathered mountain would appear more jagged.
I do believe with a lot of exposure to weather will make the mountain appear somewhat more jagged compared to a mountain that is less weathered.
If this is incorrect, please, don't refrain to tell me.
Which of the following is an example of benefits?
Travel
Physical activity
Salary
Insurance
Answers
Insurance is an example of benefits therefore the corrct answer is option D.
What is exercise?The exercise has a beneficial effect on the body and differs the type of death a person undergoes. If a person exercises but sits for too long can result in many diseases that ultimately lead to death. Along with exercise, the person should do mobile activities so that it increases their fitness.
It is among the most notable and significant advantages of insurance. According to insurance plans, the insured person or companies are protected from liabilities. The correct kind of insurance coverage might help you protect yourself from losses brought on by various life uncertainty.
Insurance is a good example of a benefit because, unlike salaries, which are things you earn as a base when you start a job, benefits are things you only receive as a result of working in certain jobs.
Thus,the correct answer is option D.
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Refraction studes show that the Moho is depressed about 10 km beneath the center of the Hawaiian Islands. Assuming that this is the value of wo and that h=34 km, E= 70 GPa, v = 0.25. Pm Pw 2300 kg m-3, and g = 10 m s -2 determine the maximum bending stress in the lithosphere.
Answers
the maximum bending stress in the lithosphere is 202 MPa
hear
Given that Hite 34 km
12 2 70 9 Pa
N 2 0. 25
ρm- ρw= 2300 kgm 3
3 = 10 ms - 2
Moh depressed about 10km beneath the centre or Islands .
We know, flexural rigidity
Equation
D=E/12 (1 - V 2 )
be neath the center of Isla g
=70 x 109 pa x 103 x ( 10 m ) 312 (1 - 0.0625 )
=70 x 1021- Nm
=12X 019375Fox 10 212
=2 6: 222 x 102 Mm
Again , total maximum bending stress in the
lithosphere 6 = = 90 - ( 8 m - Pm ) 8 u
Where , Applied load of upper Surface of lithosph
We Replaced manthe rock thickness = 34 1
Bending stress = 6. 222 x 10' Alm- 2300 108 x 10->52 x 34 km
=n3 4
= 6. 2327 10 1/m- 230 0 kg x 10 m 2 x 34 x103 x]
=2 6 . 222 x 102/ nim - . 2300 X10 x 34x103 Pa
= 6222x1021 am 2 x 18 Alm
34x 34 x 34x( 103) ,m 3
6:222 X 102 Mm
2
3 4 x 3 4x34 x 109 m 3
2 6 .222 x 1012 na
34 x 34 x 39
6. 222
- x 10 2 pa
39, 304
2 0. 000 ( 5 8 307 10 - Pas
158, 83 X 108 pa .
-'. Bendig stress - 15.83 x108 pa . 782 x 10 Pa
2 15. 53 x108 pa - 7. 8 2x108 pc
Bendig stress=202 M Pa
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