A 1100-kg car moving on a horizontal surface has speed v = 65 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 3.1 m . What is the spring stiffness constant of the spring?
Answers
The spring stiffness constant of the coiled spring is 22955.91 N/m.
How we calculated spring stiffness?The conservation of energy to determine the spring stiffness constant.
Initially, the car has kinetic energy equal to:
K1 = (1/2) × m × v²
where m is the mass of the car and v is its speed. When the car is brought to rest by the spring, its kinetic energy is converted into elastic potential energy stored in the spring.
The elastic potential energy stored in a spring is given by:
U = (1/2) × k × x²
where k is the spring stiffness constant and x is the displacement of the spring from its equilibrium position.
At the maximum compression of the spring, the car comes to a stop, so all of the initial kinetic energy is stored as elastic potential energy:
K1 = U
Substituting the expressions for K1 and U and solving for k, we get:
k = 2 × K1 / x²
where x is the maximum compression of the spring. We are given the initial speed of the car, v = 65 km/h, which is equal to:
v = 65 km/h × (1000 m/km) / (3600 s/h) = 18.06 m/s
We are also given the distance the car comes to rest, x = 3.1 m. Substituting these values and solving for k, we get:
k = 2 × (1/2) × m × v² / x²
= m × v² / x²
= 1100 kg× (18.06 m/s)² / (3.1 m)²
= 22955.91 N/m
Therefore, the spring stiffness constant of the coiled spring is 22955.91 N/m.
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Related Questions
The forces exerted on an object are shown.
8N
ہے"
Object
If the object moves left, which statement is correct about force F?
It is equal to 8 N.
It is equal to 10 N.
It is less than 8 N.
It is greater than 10 N.
Answers
From the diagram it is clear that F is less than 8 N.
What is force?The term force is that which causes a push or a pull. A force is said to have acted on a body when the body in motion stops or an acceleration is given to a body that is at rest or the direction of the object that is in motion changes.
Having said this, we know that force is a vector quantity. This implies that force has both magnitude and direction. The direction of the force also has to do with the direction that that the force would cause the object to move.
Let us now look at the object as shown, we can see that the force that acts on the left hand side has a magnitude of about eight Newton. We are now to use this to deduce the correct statement.
We can then say from what we have in the diagram that the force F as shown to the right is less than 8 N.
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A force of 20N acted on a ball thereby imparting an impulse of 70N's to the ball. For how long did the force act on the ball?
Answers
Answer:3.5 seconds
Explanation:
Make a prediction that answers the question in the purpose:
“How does time affect the temperature of water?”
(Ex-“If we use a ramp, then the ball will roll faster down the ramp because gravity has more time to do work on the ball.”)
Im not good at these, please help quickly.
Answers
As a object falls from a high-flying stationary helicopter, its velocity increases and its acceleration ____.
increases.
decreases.
stays at 10 m/s2.
is zero the entire time.
Answers
Which of the following planets or moons has an atmosphere consisting mainly of Hydrogen and Helium with some methane?
A) Venus
B) Saturn
C) Titan
D) Uranus
Answers
Saturn is the following planet or moon, and its atmosphere is primarily made of hydrogen with a small amount of methane.
The correct answer is B
What makes Saturn the best planet?The planet Saturn is incredibly large and its rings make it incredibly gorgeous. Amazing moons as Titan reside there as well. The Solar System's Saturn is arguably the most popular and stunning planet. Compared to the rings of other planets, Saturn's are much larger and easier to see.
Where could we possibly live?Then, only a year ago, researchers found a second Earth-like planet around Proxima Centauri, one of our nearest nearby stars. The best option we now have for maintaining human life is this planet.
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at the instant shown, rank these six scenarios on the basis of the magnitude of the current in the light bulb.
Answers
At the instant shown, the six scenarios can be ranked in terms of the magnitude of current in the light bulb as follows:
1) Scenario 1 - Here, the battery is directly connected to the light bulb without any other resistors in the circuit. Therefore, the current flowing through the bulb will be the maximum among all the scenarios.
2) Scenario 3 - In this case, the battery is connected to the light bulb through a resistor. However, the resistance is less compared to other scenarios, so the current will be higher than in other cases.
3) Scenario 4 - Here, the battery is connected to the light bulb through a higher resistance compared to scenario 3. This will result in a lesser current in the bulb.
4) Scenario 5 - In this scenario, the battery is connected to the light bulb through a much higher resistance than in the previous two scenarios. Therefore, the current flowing through the bulb will be lower.
5) Scenario 6 - Here, the battery is connected to the circuit in such a way that the current will bypass the light bulb. Therefore, the bulb will not light up and the current flowing through it will be zero.
6) Scenario 2 - This scenario is similar to scenario 6 where the switch is open, so the circuit is not complete, and hence there will be no current flowing through the light bulb.
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If the instantaneous velocity of an object is zero, then its acceleration must be: a. zero b. positive c. negative 1
d. 00 m/s2 e. not enough information
Answers
If the instantaneous velocity of an object is zero, the corresponding acceleration is zero. It indicates that there is no change in velocity at that specific instant. Acceleration is the rate at which an object's velocity changes over time.
It is defined as the derivative of velocity with respect to time. Mathematically, acceleration (a) is calculated as the change in velocity (Δv) divided by the change in time (Δt):
a = Δv / Δt
When the instantaneous velocity of an object is zero, it means that the object is not currently changing its position. At that specific moment, the object is at rest, and its velocity is constant (zero). Since there is no change in velocity (Δv = 0), the numerator of the acceleration formula becomes zero.
a = 0 / Δt
Any value divided by zero is zero, so the acceleration in this case is zero.
Therefore, if the instantaneous velocity of an object is zero, the corresponding acceleration is zero. It indicates that there is no change in velocity at that specific instant.
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How much work is done using a 500-watt microwave oven for 5 minutes?
Answers
The amount of work that is done using a 500-watt microwave oven for 5 minutes is 150,000 J.
How to calculate work done?Work is a measure of energy expended in moving an object. It is generally said that "no work is done if the object does not move".
Power is a measure of the amount of work that can be done in a given amount of time. It can be represented by the following equation:
Power (J/s) = Work done (J) / time (s)
This means that work done = power × time
According to this question, a 500-watt microwave oven is used for 5 minutes. The amount of work done can be calculated as follows:
Work done = 500W × 300s
Work done = 150,000 J
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A shopper standing 3.00 m from a convex security mirror sees his image with a magnification of 0.250. How far is his image from the mirror's surface and is it real or virtual?
o 8.33 cm, virtual o 8.33 cm, real o 75.0 cm, virtual o 75.0 cm. real
Answers
The image of the shopper is 75.0 cm from the mirror's surface, and it is virtual.
The magnification (m) of an image formed by a convex mirror is given by the formula:
m = -d_i / d_o,
where d_i is the distance of the image from the mirror's surface and d_o is the distance of the object from the mirror's surface. In this case, the magnification is given as 0.250.
Given that the shopper is standing 3.00 m from the convex mirror (d_o = 3.00 m) and the magnification is 0.250, we can rearrange the formula to solve for d_i:
d_i = -m * d_o.
Substituting the values into the formula:
d_i = -0.250 * 3.00,
= -0.75 m.
The negative sign indicates that the image is virtual, meaning it cannot be projected onto a screen. Taking the absolute value, the image is 0.75 m from the mirror's surface.
Converting 0.75 m to centimeters, we get 75.0 cm.
The image of the shopper is located 75.0 cm from the convex mirror's surface, and it is a virtual image. This calculation utilizes the magnification formula for a convex mirror to determine the distance of the image based on the given magnification and object distance.
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A synodic month is 29.53 days. That's just the average. Lunar months vary in length from about 29.2 to nearly 29.9 days. The length of the lunar month varies because of the earth’s and moon’s orbits being elliptical, mainly, and also because the plane of the moon's orbit around earth is not the same plane as the plane of the earth’s orbit around the sun.
Take that average, 29.53 days. That's how how much time goes by from new moon to new moon, or, if you prefer, full moon to full moon.
The moon always keeps its same face toward earth.
The term synodic means it relates to a conjunction or alignment in the sky. In this case, it is the alignment between earth, moon, and sun that creates either a new moon or a full moon.
The moon, because it is going around the earth, rises 49 minutes later each day. (In other words, the earth must rotate for another 49 minutes to get the moon back above the horizon, because during the day that has gone by since the last moon rise, the moon has moved that many minutes farther along its orbit, as seen from earth.) The 49-minute number is an average and it's rounded off a bit.
If you add up how much later the moon rises each day, over the course of a whole synodic month, the total = ??? hours.
(Fill in the blank with the correct whole number of hours, rounded off to a whole number, with no decimal point after the number.)
Answers
Synodic months are 29.53 days. That's average. Lunar months last 29.2–29.9 days. The moon's orbit around earth is not the same plane as the earth's circle around the sun, hence the lunar month's length changes. The moon rises approximately 24 hours later each day over the course of a synodic month.
To calculate the total number of hours by which the moon rises later each day over the course of a synodic month, we need to multiply the average delay of 49 minutes by the number of days in a synodic month.
The number of days in a synodic month is approximately 29.53.
Therefore, the total delay in hours can be calculated as follows:
Total delay = 49 minutes × 29.53 days
Converting minutes to hours (1 hour = 60 minutes):
Total delay = (49/60) hours × 29.53 days
Total delay = 24.276 hours
Rounding off to the nearest whole number, the total delay is approximately 24 hours.
So, the moon rises approximately 24 hours later each day over the course of a synodic month.
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Suppose a 50.0 g block of silver (specific heat = 0.2350 J/g·°C) at 100.°C is placed in contact with a 50.0 g block of iron (specific heat = 0.4494 J/g·°C) at 0.00°C, and the two blocks are insulated from the rest of the universe. The final temperature of the two blocks will be:
Answers
Answer:
34.34 °C
Explanation:
From the question,
Heat lost by the silver block = heat gained by the iron block.
cm(x-y) = c'm'(y-z)................... Equation 1
Where c = specific heat capacity of the silver block, m = mass of the silver block, c' = specific heat capacity of the iron, m' = mass of the iron. x = initial temperature of the silver block, z = initial temperature of the iron, y = final temperature of the mixture.
make y the subject of the equation
y = (cmx+c'm'z)/(cm+c'm')............... Equation 2
Given: c = 50 g, c = 0.2350 J/g·°C, x = 100°C, m' = 50 g, c' = 0.4494 J/g.°C, z = 0°C
Substitute these values into equation 2
y = [(50×0.2350×100)+(50×0.4494×0)]/[(50×0.2350)+(50+0.4494)]
y = 1175/(11.75+22.47)
y = 1175/34.22
y = 34.34 °C
Which statement best describes the difference between atoms and molecules
Answers
Answer:
Atom
It is a smallest component of element.
may or maynot have possessed.
Molecule
it is a group of two or more Atoms.
alway posses the properties of matter.
1. A 2.5 kg led projector is launched as a projectile off a tall building. At one point, as it
is flying through the air it has a velocity of 24 m/s and a height of 14 m.
a) Find the potential energy
b) Find the kinetic energy
c) Find the total mechanical energy
d) Find the potential energy at a height of 8.7 m
e) Find the kinetic energy at that same height. (Hint – the total energy is always the same
as in part c)
f) Find the velocity at that height
g) Find the velocity at a height of 11.6 m
h) At what height would the velocity be 26 m/s?
i) What is the velocity just before it smashes into the ground?
See
Answers
Answer:
Explanation:
I got everything but i. Don't know why but it's eluding me. So let's do everything but that.
a. PE = mgh so
PE = (2.5)(98)(14) and
PE = 340 J
b. \(KE=\frac{1}{2}mv^2\) so
\(KE=\frac{1}{2}(2.5)(14)^2\) and
KE = 250 J
c. TE = KE + PE so
TE = 340 + 250 and
TE = 590 J
d. PE at 8.7 m:
PE = (2.5)(9.8)(8.7) and
PE = 210 J
e. The KE at the same height:
TE = KE + PE and
590 = KE + 210 so
KE = 380 J
f. The velocity at that height:
\(380=\frac{1}{2}(2.5)v^2\) and
\(v=\sqrt{\frac{2(380)}{2.5} }\) so
v = 17 m/s
g. The velocity at a height of 11.6 m (these get a bit more involed as we move forward!). First we need to find the PE at that height and then use it in the TE equation to solve for KE, then use the value for KE in the KE equation to solve for velocity:
590 = KE + PE and
PE = (2.5)(9.8)(11.6) so
PE = 280 then
590 = KE + 280 so
KE = 310 then
\(310=\frac{1}{2}(2.5)v^2\) and
\(v=\sqrt{\frac{2(310)}{2.5} }\) so
v = 16 m/s
h. This one is a one-dimensional problem not using the TE. This one uses parabolic motion equations. We know that the initial velocity of this object was 0 since it started from the launcher. That allows us to find the time at which the object was at a velocity of 26 m/s. Let's do that first:
\(v=v_0+at\) and
26 = 0 + 9.8t and
26 = 9.8t so the time at 26 m/s is
t = 2.7 seconds. Now we use that in the equation for displacement:
Δx = \(v_0t+\frac{1}{2}at^2\) and filling in the time the object was at 26 m/s:
Δx = 0t + \(\frac{1}{2}(-9.8)2.7)^2\) so
Δx = 36 m
i. ??? In order to find the velocity at which the object hits the ground we would need to know the initial height so we could find the time it takes to hit the ground, and then from there, sub all that in to find final velocity. In my estimations, we have 2 unknowns and I can't seem to see my way around that connundrum.
Which of these is NOT considered an example of low EM energy?
A. infra-red
B. microwaves
C. ultra-violet
D. radio waves
Answers
ultra-violet is NOT considered an example of low Electromagnetic energy. Hence option C is correct.
Electromagnetic waves, which are synchronised oscillations of the electric and magnetic fields, are the traditional form of electromagnetic radiation. The electromagnetic spectrum is created at various wavelengths depending on the oscillation frequency. Electromagnetic waves move at the speed of light, typically abbreviated as c, in a vacuum. The oscillations of the two fields create a transverse wave in homogeneous, isotropic media when they are perpendicular to each other, perpendicular to the direction of energy and wave propagation, and perpendicular to each other. Either an electromagnetic wave's oscillation frequency or its wavelength can be used to describe its location within the electromagnetic spectrum. Because they come from different sources and have different effects on matter, electromagnetic waves of different frequencies are known by various names. These are listed in decreasing wavelength and increasing frequency order: sound waves, lower energy have lower frequency.
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what instrument would you use to measure the mass of an object
Answers
To measure the mass of object, we would use balances or scales. They are generally used to weigh most objects.
What is mass of object?A mass of object is a measure of a matter in an object. A mass of object is unchanged, it always the same wherever it is. The System International unit of mass is kg.
An object can be measured by the following instruments.
Balances and scalesMeasurement transducerSpace Linear Acceleration Mass Measurement Device (SLAMMD)Vibrating Tube Mass SensorGravitational InteractionThe instruments that are mostly used is balances and scales. There are many types of balances and scales. Some types of balances are beam balance, spring balance, physical balance, and digital scientific balance. While, the types of scales are spring scale and digital scale.
Thus, we can conclude that we would use balances or scales to measure the mass of most objects.
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If a feather takes 2.5 seconds to drop 200cm, what is the speed of this feather
Answers
Answer:
80cm per second
Explanation:
a laser with an average power of 5.62 mw produces a cylindrical light beam with a radius of 1.17 mm. what is the peak value of the electric field in that beam? (use c = 2.9979 × 108 m/s)
Answers
Peak electric field in a cylindrical laser beam with a radius of 1.17 mm and 5.62 mw power is 3.13 MV/m.
To calculate the peak electric field in the given cylindrical laser beam, we need to use the formula E = sqrt(2P/\(\pi r^2\)cε0), where P is the average power, r is the radius, c is the speed of light, and ε0 is the vacuum permittivity.
Substituting the given values, we get E = sqrt(2(5.62×\(10^{-3)\)/π(1.17×\(10^{-3\)\()^2\)(2.9979×\(10^8\))(8.854×\(10^{-12\))) = 3.13 MV/m.
Therefore, the peak value of the electric field in the cylindrical laser beam is 3.13 megavolts per meter.
This calculation can be useful in understanding the intensity and power of laser beams, and in designing laser systems for various applications.
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We need to use the formula that relates the average power of the laser to the peak value of the electric field. This formula is: Peak Electric Field = \(\sqrt{(2*Average Power / (pi*epsilon_0*c*A))}\).
Where: Average Power is the average power of the laser, given as 5.62 mW, pi is the mathematical constant pi (approximately 3.14159), \(epsilon_0\) is the electric constant, which has a value of approximately 8.85 x \(10^{-12}\) F/m, c is the speed of light, given as 2.9979 x \(10^{8}\) m/s, A is the cross-sectional area of the beam, given as pi*\(r^{2}\), where r is the radius of the beam, given as 1.17 mm (or 0.00117 m). Plugging in the values, we get: Peak Electric Field = \(\sqrt{(2*5.62 * 10^-3 / (pi*8.85 * 10^-12*2.9979 * 10^8*pi*(1.17 * 10^-3)^2))}\). Simplifying, we get: Peak Electric Field = 6.46 x \(10^{5}\) V/m. Therefore, the peak value of the electric field in the cylindrical light beam produced by the laser is 6.46 x tex]10^{5}\) V/m.
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need help with this student guide
virtual lab conservation of linear momentum student guide
I cant post the download link just search what i put above and click the first link to download the doc
Answers
Answer:
Did you finish the doc if so can you share it
Explanation:
Answer:
Did you ever get it? I need it too
Explanation:
A dart is divided into 6 equal sectors . When a dart lands on it
Answers
what happens to the erosive power of a stream as velocity increases?
Answers
The erosive power increases as the velocity increases of the stream.
What is power?Power is the rate of job completion or energy delivery in science and engineering. It is denoted by the symbol W/t, which is the product of the amount of labor (W) or energy (E) transported divided by the amount of time (t).
Any given amount of work can be finished fast with a high-powered motor or slowly with a low-powered motor. Units of power, which measure work (or energy) per unit of time, include joules per second (or watts), ergs per second, and foot-pounds per minute.
For picking up material as opposed to carrying it in suspension, more velocity is required. The rate of erosion and velocity both rise during the peak discharge. Deposition and transportation are barely separated. It follows that merely a slight drop in velocity causes sedimentation.
Therefore, the erosive power decreases as the velocity increases of the stream.
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The erosive power of a stream as velocity increases because no force of interaction between positive and neutral object.
What is Coulomb's law?Coulomb's law states that the electric force is directly proportional to the product of the charged objects.
The electric force is also inversely proportional to the square of the distance between the charges and is denoted below:
F= kq1q2/ r² (Newton)
where,
F=electric force
k=Coulomb constant
q1, q2=charges
r=distance of separation
So, here we know that when two objects are charged and placed at some distance "d" apart then the two objects will either attract or repel each other.
If the charges are of similar type then the two objects will repel while if the charges are of opposite nature then two objects will attract each other.
So here when a charge object is near the neutral then there is NO force between two objects.
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Q1 What is the velocity of the "Right" ball after the elastic collision below? Left ball heading rightwards btw.
Before: Left Ball Velocity= 2.0 m/s Left Ball Mass 0.25 kg; Right Ball Velocity= 0 m/s Right Ball Mass= 0.25 kg
After:?
Answers
Answer:
In an elastic collision, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision. This means that we can use the conservation of momentum to determine the velocity of the right ball after the collision.
The momentum of an object is equal to its mass multiplied by its velocity, so the initial momentum of the left ball is 0.25 kg * 2.0 m/s = 0.5 kgm/s. Since the initial velocity of the right ball is 0, the total initial momentum of the two balls is 0.5 kgm/s.
After the collision, the total momentum of the two balls must still be 0.5 kg*m/s. Since the mass of the two balls is the same, this means that the velocity of the right ball after the collision must be 2.0 m/s, which is the same as the initial velocity of the left ball.
Therefore, the velocity of the right ball after the elastic collision is 2.0 m/s.
The Trail Making Tests evaluates several cognitive skills, including a. mood, attention, and sequencing. b. attention, intelligence, and thought processing. c. attention, sequencing, and thought processing. d. intelligence, sequencing, and thought processing.
Answers
The Trail Making Tests evaluate several cognitive skills, including option C: attention, sequencing, and thought processing.
The Trail Making Tests are designed to assess an individual's cognitive abilities in the areas of attention, sequencing, and thought processing. These tests help to identify any potential difficulties in these cognitive domains and can provide valuable insight into a person's overall cognitive functioning.
The Trail Making Tests consist of two parts: Part A and Part B. Part A requires the individual to connect numbered circles in ascending order, while Part B involves connecting alternating numbers and letters in ascending order. This assesses a person's ability to maintain focus, follow a sequence, and process information effectively.
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How is sea salt harvested from the ocean? Name and explain the process.
Answers
Answer:
Sea salt is harvested by evaporating the ocean water away and generally has little to zero processing involved. Major sea salt manufacturers pump sea water into huge shallow “ponds” and allow the sun to evaporate the water... Before harvesting seawater, be sure the body of water you are using is not polluted.
Explanation:
hope it helps, please mark as brainliest
Question 7
What is the kinetic energy of a 15 kg child rolling down a hill at 2 m/s?
Answers
Answer:
KE = 30 J
Explanation:
i used a kinetic energy calculater
A solid disk pulley, which has a mass of 50.0 kg and a radius of 0.25m, has string wrapped around it and a 49N force is applied to the end of the string causing it to accelerate downward towards the floor. What is the angular acceleration of the pulley? What is the linear acceleration of the outside edge of the pulley?
Answers
The torque on the pulley is given by:
τ = Fr
where F is the force applied to the end of the string and r is the radius of the pulley. Substituting the given values, we get:
τ = 49 N × 0.25 m = 12.25 Nm
The moment of inertia of a solid disk is given by:
I = 1/2 MR^2
where M is the mass of the pulley and R is its radius. Substituting the given values, we get:
I = 1/2 × 50.0 kg × (0.25 m)^2 = 0.78125 kgm^2
The angular acceleration of the pulley is given by:
α = τ/I
Substituting the calculated values, we get:
α = 12.25 Nm / 0.78125 kgm^2 = 15.68 rad/s^2
Now let's move on to linear motion:
The linear acceleration of the outside edge of the pulley is given by:
a = αR
Substituting the calculated values, we get:
a = 15.68 rad/s^2 × 0.25 m = 3.92 m/s^2
So the angular acceleration of the pulley is 15.68 rad/s^2 and the linear acceleration of the outside edge of the pulley is 3.92 m/s^2.
The pulley's angular acceleration is 15.68 rad/s², and its outside edge's linear acceleration is 3.92 m/s².
Linear acceleration: What is it?The homogeneous acceleration brought on by a moving body travelling in a straight line is referred to as linear acceleration. According to the characteristics such as start and final velocity, displacement, time, and acceleration, there are three equations that are crucial in linear acceleration.
We must apply the rotational motion and linear motion equations to address this issue. The rotating motion will come first:
The torque on the pulley is given by: τ = Fr
where r is the radius of the pulley and F is the force exerted on the string's end. Inputting the values provided yields:
τ = 49 N × 0.25 m = 12.25 Nm
I = 1/2 MR2, where M is the pulley's mass and R is its radius, gives the moment of inertia of a solid disc. Inputting the values provided yields:
I = 1/2 × 50.0 kg × (0.25 m)² = 0.78125 kgm²
The angular acceleration of the pulley is given by: α = τ/I
Substituting the calculated values, we get:
α = 12.25 Nm / 0.78125 kgm² = 15.68 rad/s²
Now let's move on to linear motion:
The linear acceleration of the outside edge of the pulley is given by:
a = αR
Substituting the calculated values, we get:
a = 15.68 rad/s² × 0.25 m = 3.92 m/s²
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you add equal amounts of heat to two identical cylinders containing equal amounts of the same ideal gas. cylinder a is allowed to expand, while cylinder b is not. Part A How do the temperature changes of the two cylinders compare?
Answers
Temperature rise will be there in cylinder B more than in cylinder A because of internal energy.
what is internal energy?
The sum of the kinetic and chemical potential energies of all the particles in the system is the internal energy. Particles accelerate and pick up kinetic energy when energy is applied to increase the temperature.
Briefing:
Cylinder A uses the heat it absorbs to both work while expanding and to increase internal energy (or temperature).
While cylinder B solely uses the heat it absorbs to increase its internal energy
As a result, cylinder B's temperature rise is greater than cylinder A's.
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A rubbing or scraping force that penetrates and destroys the outermost layer of skin is called a(n):
Answers
A rubbing or scraping force that penetrates and destroys the outermost layer of skin is called an abrasion.
An abrasion is a type of injury to the skin caused by friction, typically through rubbing or scraping against a rough surface. When an object or surface applies force and moves across the skin, it can cause the outermost layer of the skin, known as the epidermis, to be worn away or damaged.
The force applied during an abrasion is strong enough to disrupt the integrity of the skin and remove the superficial layers, exposing the underlying tissues. The severity of an abrasion can vary depending on factors such as the force applied, the duration of the contact, and the nature of the surface involved.
Abrasions commonly occur as a result of falls, accidents, or contact with abrasive materials such as rough pavement, gravel, or sandpaper. The friction and scraping action during an abrasion can cause pain, bleeding, and the formation of a raw or scraped area on the skin.
Treatment for an abrasion typically involves cleaning the wound to remove any debris or dirt, applying an antiseptic to prevent infection, and covering the area with a sterile dressing. In most cases, abrasions heal on their own over time as new skin cells regenerate to replace the damaged layers.
It is important to keep an abrasion clean to prevent infection and promote healing. Additionally, proper wound care, such as keeping the area moisturized and protected, can help minimize scarring and promote optimal healing.
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F. A 50. A resistor (R2), and unknown resistor R2, a 120 Volt source, and an ammeter are connected in a
complete circuit. The ammeter reads 0.50 ampere (current).
R1
a. Determine the resistance of Rz.
R2
Answers
Complete question is;
A 50.-ohm resistor, an unknown resistor R, a 120-volt source, and an ammeter are connected in a complete circuit. The ammeter reads 0.50 ampere.
A) Calculate the equivalent resistance of the circuit shown.
B) Determine the resistance of resistor R shown in the diagram.
Answer:
A) R_eq = 240 Ω
B) R = 190 Ω
Explanation:
A) To get the equivalent resistance, we will use the formula;
R = V/I
Where;
V is Voltage
I is current
R is equivalent resistance
From the question, V = 120 V and I = 0.5A
Thus;
R_eq = 120/0.5
R_eq = 240 Ω
B) From the image, we see that the resistors are connected in series.
Formula for resistors in series is;
R = R1 + R2 +..... Rn
Thus;
240 = 50 + R
R = 240 - 50
R = 190 Ω
A) The equivalent resistance of the circuit shown will be 240 Ω.
B) The resistance of resistor R will be 190 Ω
What is resistance?Resistance is a type of opposition force due to which the flow of current is reduced in the material or wire. Resistance is the enemy of the flow of current.
The given data in the problem is;
R is the resistance = 50.-ohm
v is the voltage = 120-volt source
I is the value of the current =0.50 ampere.
A) The equivalent resistance of the circuit shown will be 240 Ω.
According to ohm's law
\(\rm R= \frac{V}{I} \\\\ \rm R= \frac{120}{0.5} \\\\ \rm R=240 \ ohm\)
Hence the equivalent resistance of the circuit shown will be 240 Ω.
B) The resistance of resistor R will be 190 Ω
The given resistors are connected in the series;
R = R1 + R2 +..... Rn
240 = 50 + R
R = 240 - 50
R = 190 Ω
Hence the resistance of resistor R will be 190 Ω
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When trying to simplify and find the equivalent resistance you should first simplify resistors in _ before simplifying those in _
Answers
The equivalent resistance for the parallel connected resistance will be
\(\dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}\)
What is resistance?
Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω)
Now if two resistances are connected parallel then the voltage on the resistances will be different and the same current will flow from both resistances.
\(V_{eq}=V_1+V_2\)
\(I_{eq}R_{eq}=I_1R_1+I_2R_2\)
Since \(I_{eq}=I_1=I_2\)
\(R_{eq}=R_1+R_2\)
Hence the equivalent resistance for the parallel connected resistance will be
\(\dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}\)
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23. As the frequency of a wave increases, the period of the wave
Answers
Answer: decreases
Explanation: As frequency increases the period of a wave decreases because they have an inverse relationship. The equation for wave period (T) is the inverse of the frequency (f). So, as frequency increases, the value for period will decrease accordingly.