The precessional angular speed Wp of the top while assuming that the moment of inertia of the thin cylinder is negligible is 11.23 rad/s.
What is moment of inertia?In physics, quantitative measure of the rotational inertia of a body. It resists rotational motion and hence called moment of inertia and not moment of force.
How to calculate the precessional angular speed of Wp of the top?
Mass of cylinder, m = 13.3g
Length of the cylinder Lcyl = 6.8cm
The mass of the disk, M = 42g
The radius of the disk, Rdisk = 2.3cm
The center of mass is located at distance, dcom = 1.77cm
The angular speed of the top, w = 108 rad/s
The moment of inertia of the disk
I = 1/2 MRdisk^2
= 1/2 * 42 * 2.3^2
= 111.09 g cm^2
= 111.09 * 10^-3 * 10^-4 kg m^2
I = 1.11 * 10^-5 kg m^2
The moment of inertia is developed in the disk when it is rotating.
The precessional angular speed of the top formula is
Wp = Rdisk (M +m) *g / I*w
= 2.3 * 10^-2 * (42 * 10^-3 + 13.3 * 10^-3) * 9.8 / 1.11 * 10^-5 * 100
= 11.23 rad/s
Learn more about moment of inertia https://brainly.com/question/15246709
#SPJ4
assume that the market for beef is perfectly competitive and in equilibrium. which of the following would most likely result in an increase in both the equilibrium price and the equilibrium quantity of beef?
The equilibrium price and the equilibrium amount of beef will both rise in response to a decline in the supply of beef.
How to explain this reduction in beef supply?When supply and demand, as well as financial forces, are in balance, there is economic equilibrium, and the values of economic variables do not change in the absence of external influences.
When supply and demand are in balance, the number of people who want to purchase an item determines the demand. This cycle has a number of variables, and if it continues to rise, the last minimal cost can enable a person to purchase an item. For instance, if you purchase ice cream every day and the price keeps rising, even if it is only by a cent, this ongoing rise in price could result in the last cent becoming an obstacle.
Know about equilibrium quantity at:
https://brainly.com/question/29416359
#SPJ4
an object is moving with uniform circular motion. does the centripetal force do any mechanical work on the object? group of answer choices
If an object is moving with uniform circular motion, the mechanical work on the object due to centripetal force is zero
W = F d cos θ
W = Work done
F = Force
d = Distance
θ = Angle between force and displacement vector
In a circular motion, the centripetal force acts towards the center of the motion at any point in its motion.
The radial displacement at any point in the motion is tangential to the direction of motion. This means that the force and displacement vector are perpendicular to each other.
θ = 90°
W = F d cos 90°
W = 0
Therefore, if an object is moving with uniform circular motion, the mechanical work on the object due to centripetal force is zero
To know more about work done
https://brainly.com/question/12834956
#SPJ1
The muzzle velocity of a projectile fired from a gun has an upward component of 49 m/s and a horizontal component of 60 m/s
what maximum height does the projectile reach
A projectile having a muzzle velocity of 60 m/s and a vertical component of 49 m/s will travel 600 metres horizontally when shot from a gun.
Equation:
Where t represents the horizontal component of its velocity, the horizontal distance is equal to vt.
v = 60 m/s,
t = 10 seconds,
x = 60, and 10 seconds equal
= 600 metres.
According to the Law of Inertia, a particle's state won't change if there is no external force acting on it. As a result, whether it is moving or at rest, it will continue to move at the same constant speed indefinitely.
The vertical component of a particle's velocity changes continually throughout projectile motion because of the weight of the projectile acting in the vertical direction.
However, because there is no force pushing in the horizontal direction, the object, which maintains a constant horizontal velocity.
To know more about velocity, visit
https://brainly.com/question/18084516
#SPJ9
consider an object on which a number of forces act for a short time. the kinetic energy of the object will have decreased if the net work done by the forces . which of the following correctly fills in the blank?
The kinetic energy of the object will have decreased if the net work done by the forces: Zero.
Kinetic energy is the strength an item has due to its motion. If we want to accelerate an item, then we have to practice a force. applying pressure calls for us to do paintings. After paintings have been finished, power has been transferred to the item, and the object may be shifting at a new constant pace.
Solution:-
a) Arm wore energy theorem,
WwW = AE
Sy if AKEDO, WO
Now, the correct option is: achn4 on the project is positive
Learn more about Kinetic energy here:
https://brainly.com/question/8101588
#SPJ4
a machine part has the shape of a solid uniform sphere of mass 230 g and diameter 2.70 cm . it is spinning about a frictionless axle through its center, but at one point on its equator it is scraping against metal, resulting in a friction force of 0.0200 n at that point.
A machine part has the shape of a solid uniform sphere of mass 230 g and diameter 2.7 cm. The angular acceleration is 16.10 rad / s².
Given that, mass of the sphere is 230 g
diameter is 2.7 cm
Frictional force = 0.02N
Now, we need to calculate angular acceleration. We know the formula of torque as τ = f × r
I × α = f × r
Here, I is the moment of inertia of the sphere
2/5 m r² × α = f × r
α = 5 f /( 2 m r) = (5* 0.02) / (2 * 230 * 10⁻³ * 1.35 * 10⁻²)
α = 16.10 rad / s²
Thus, the angular acceleration is 16.10 rad / s².
To know more about angular acceleration:
https://brainly.com/question/13979228
#SPJ4
how can you experience a black body in practice?
We can easily experience black body in practical.
What is black body?
A black body or blackbody is the an idealized physical of the body that absorbs all to the incident of a electromagnetic radiation, regardless of frequency or angle of incidence. The probability is a name "black body" is given because it is absorbs all colors of light. A black body also emits the black-body radiation.
A body which completely absorbs all heat radiation incident on it is called perfectly black body. A perfectly black body can not be realised in practice but materials like Platinum black or Lamp black come close to being ideal black bodies. Such materials absorbs 96% to 85% of the incident radiations.
To know more about black body click -
https://brainly.com/question/28887620
#SPJ9
Which of the answer choices best describes the structure and properties of ionic compounds?
Select all that apply.
Olonic compounds are best represented with the ball-and-stick model.
The bonds of ionic compounds are resistant to water's properties.
The structure of ionic compounds resembles a three-dimensional network.
Olonic compounds have high melting and boiling points.
A substance made up of both positive and negative ions is referred to as an ionic compound.
What is Ionic compound?A chemical molecule known as an ionic compound is made up of ions that are bound together by electrostatic forces, commonly known as ionic bonding. The molecule is neutral because it has both positively and negatively charged ions.Ionic compound characteristics include.Booking and high melting point.Use water to dissolve, not an organic solvent.when dissolved in water, conduct electricity.NaCl, NaI, and more examples come to mind.The ionic compound's structure and characteristics are described by the following:Ionic chemicals have a structure that resembles a three-dimensional network.Higher melting and boiling points are found in ionic substances.To Learn more About ionic compound refer to :
https://brainly.com/question/2687188
#SPJ1
The trunk of a elephant may extend up to 2.2 m. It acts much like an organ pipe only open at one end when the elephant blows air through it.
1) Calculate the fundamental frequency of the sound the elephant can create with its trunk. (Express your answer to two significant figures.)
(express in Hz)
2) If the elephant blows even harder, the next harmonic may be sounded. What is the frequency of the first overtone? (Express your answer to two significant figures.)
(express in Hz)
The calculated answers are- Fundamental frequency is 38.63 Hz and frequency of the first overtone is 115.90 Hz.
How to calculate the frequencies for a elephant trunk which behaves like an organ pipe?Any integer multiple of a pipe's fundamental or natural frequency is considered to be a harmonic. When an antinode is present at one or both of the pipe's open ends, open air columns will naturally resonate at specific frequencies (a closed end of the pipe has a node). For an open-closed pipe, the following equation is used to determine the harmonic frequencies:
[tex]f = \frac{nv}{4L}[/tex]
where,
f = frequency
n = harmonic number
v = speed of sound
L = length of pipe in meters
An organ pipe with a closed end can be used to represent the elephant's trunk; in pipes, closed ends represent nodes and open ends represent antinodes or bellies.
The formula for this system's wavelengths is-
4L = nλ
where n = 1, 3, 5, 7..
1) To calculate the fundamental frequency (n = 1):
f = 340 / 4 × 2.2
f = 38.63 Hz
2) To calculate the frequency of the first overtone (n = 3):
f = 3 × 340 / 4 × 2.2
f = 115.9 Hz
To know about waves in organ pipe at:
https://brainly.com/question/14070564
#SPJ4
question 1. transactions (6 points) let schedule s1 has t1, t2 and t3 are transactions t1 t2 t3 read(z) write(y) read(x) commit read(x) write(x) read(z) write(z) commit read(x) write(x) read(y) commit let schedule s2 has t1, t2 and t3 are transactions t1 t2 t3 read(z) write(y) read(x) commit read(x) write(x) read(z) write(z) commit read(x) write(x) read(y) commit 1.1) s1 is a conflict equivalent to s2 or not? and why? (3 points) 1.2) s1 is a view equivalent to s2 or not? and why? (3 points)
Vital Points The above schedule's precedence graph is T1T3T2 with Topological Sort applied. The sequential timetables T1, T3,
What does a graph of precedence display?Process synchronization is necessary. A directed acyclic graph called a "precedence graph" is used to display the stage of execution of different operating system processes. It has nodes and edges. The processes are represented by nodes, while the execution flow is represented by edges.
What does a sequence diagram in line balancing mean?An illustration of line balancing is seen in The Balancing Act. Stations are given tasks to do. Similar to a process flow diagram, a precedence diagram uses shapes and arrows to represent important and crucial steps throughout the assembly of the good or service.V
To know more about graph visit:
https://brainly.com/question/17267403
#SPJ4
How can your neighborhood be improved?.
Trim any bushes or trees on your property that provide convenient hiding places too.
Prune where trees and bushes block your view of your front door or obscure your view out of your home's windows. Keep your porch visible and make sure your home looks like it has the neighborhood in mind. Keeping our neighborhoods clean is important because unclean neighborhoods attract germs and diseases.
Our neighbors get sick when they aren't. Also, it's better to live in a clean neighborhood than a dirty one. The home and neighborhood in which you grow up influence your health and longevity. A safe tidy stable and affordable home also affect a child's academic performance.
Learn more about Neighborhood here:-https://brainly.com/question/7566863
#SPJ4
Velocity of propagation In an experiment to illustrate the propagation of sound through fluids, identical sound sources emitting at 440 Hz are used to propagate sound waves through mercury and through ethanol. Medium Speed of sound Ethanol Mercurv (m/s) 1,160 1,450 1) Which of the following statements is correct, assuming that the dampening effect in each medium is negligible? In mercury, the frequency of the wave is the same as in ethanol, but the wavelength is greater. In ethanol and mercury, the wavelength of the wave is the same, even if the speed of sound is different. Submit (Survey Question) 2) Briefly explain your answer to the previous question.
The waveform in mercury has the same velocity as the wave in ethanol, but it has a longer wavelength.
What, for example, is velocity?Its velocity is the speed at which something moves in one side or another. as quickly as an automobile driving north on an expressway or as quickly as a rocket lifting off. Since the velocity vector is a scalar, its absolute value is always equal to the speed of the motion.
Can velocity reverse itself?An object's velocity is the rate at which its position changes over time (displacement). While velocity, which incorporates both speed and direction, can be either favorable or unfavorable, speed can only be good.
To know more about velocity visit:
https://brainly.com/question/18084516
#SPJ4
An infinite conducting sheet lies in the xy plane. It has a width of 4.5 cm and a current density of 5200 A/m2 in the negative y-direction. An electron (me= 9.11×10−31 kg and qe=−1.60×10−19C) moves parallel to the sheet with a velocity of 2.5 ×10 6m/s in the positive y-direction and with an initial z-position of 4.0 cm. What is the the direction of the force on the electron?
(a) z
(b) -y
(c) y
(d) x
(e) -z
Option (d) is correct, According to the given conditions here we apply the right hand rule, the force pushing on an electron is travelling in the x direction.
The width of sheet is: wo=4.5cmwo=4.5cm, The current density is: σo=5200A/m2σo=5200A/m2, The mass of electron is: me=9.11×10−31kgme=9.11×10−31kg, The charge of electron is: qe=−1.60×10−19Cqe=−1.60×10−19C, The velocity of electron is: Ve=2.5×106m/sVe=2.5×106m/s, The initial position of electron is: z = 4.0cmz = 4.0cm
Io=oAo(I) The expression for the current produced by the sheet is Io=oAo. (I)
Ao=wozAo=wozis the formula for sheet area.
Change the value in the previous expression.
Ao=0.045m×0.04mAo=0.0018m2
Ao=0.045m×0.04mAo=0.0018m2
It is necessary to adjust the value in the expression (I) to Io=5200A/m20.0018m2Io=9.36A.
The magnetic field equation is Bo=sIo2z. Bo=μsIo2πz
The term "permeability of open space" (ss) is used here.
The value of an open space's permeability is as follows: s=4107T.m/A
Change the value in the previous expression.
Bo=4π×10−7T.m/A×9.36A2×π×(0.04m)
Bo=0.0000468TBo=4π×10−7T.m/A×9.36A2×π×(0.04m)
Bo=0.0000468T
The force on an electron has the formula Fo=qeBoVe.
Fo=qeBoVe
Change the value in the previous expression.
Fo=−1.60×10−19C×2.5×106m/s×0.0000468TFo=−1.872×10−17NFo=−1.60×10−19C×2.5×106m/s×0.0000468TFo=−1.872×10−17N
According to the right hand rule, the force pushing on an electron is travelling in the x direction.
To know more about electron please refer: https://brainly.com/question/1255220
#SPJ4
A 3.40 kg cylindrical rod of length 2.00 m is suspended from a horizontal bar so it is free to swing about that end. A solid sphere of mass 0.25 kg is thrown horizontally with a speed v1 = 13.0 m/s to hit the rod at the point A one-fifth of the way up from the bottom of the rod. The sphere bounces back horizontally with a speed v2 = 9.50 m/s, while the rod swings to the right through an angle theta before swinging back toward its original position. What is the angular velocity, in rad/s, of the rod immediately after the collision?
The angular velocity, in rad/s, of the rod of length 2.00 m is suspended from a horizontal bar so it is free to swing about that end immediately after the collision is 0.29 rad /s
p = m v
Initially,
p = 0.25 * 13
p = 3.25 kg m / s
Finally,
p = 0.25 * 9.5
p = 2.375 kg m / s
The point where the ball hits the rod,
r = 4 / 5 * 2
r = 1.6 m
Moment of inertia of a rod at a point,
I = Icm + M r²
I = M L² / 12 + M r²
I = ( ( 3.4 * 2² ) / 12 ) + ( 3.4 * 1.6² )
I = 1.13 + 3.7
I = 4.83 kg m²
According to law of conservation of angular momentum,
Initial momentum of ball + Initial momentum of rod = Final momentum of ball + Final momentum of rod
( 3.25 * 1.6 ) + 0 = ( 2.375 * 1.6 ) + 4.83 ω
4.83 ω = 5.2 - 3.8
ω = 1.4 / 4.83
ω = 0.29 rad / s
Therefore, the angular velocity, in rad/s, of the rod immediately after the collision is 0.29 rad /s
To know more about conservation of angular momentum
https://brainly.com/question/1597483
#SPJ4
From a scientific perspective, which of the following statements about life elsewhere in the universe is best supported by current evidence?
the government has evidence (which it is not releasing) that there is at least one other intelligent life form on a planet orbiting another star
we only have evidence that life exists around three other stars
while we have evidence of the building blocks of life elsewhere in the universe, we have no definite evidence about life around other stars at this time
there is no evidence for intelligent life anywhere, even on Earth
we have good evidence that life exists on many planets around other stars
while we have evidence of the building blocks of life elsewhere in the universe, we have no definite evidence about life around other stars at this time
The first statement describes better how life is possible elsewhere other than on earth.
The James Webb Space Telescope, launched in 2021, could get the primary glimpses: the mix of gases in the atmospheres of Earth-sized exoplanets. Webb, or a similar spacecraft within the destiny, ought to pick up symptoms of an environment like our personal – oxygen, carbon dioxide, methane. A sturdy indication of life.
In the new article led by using Jim inexperienced, the company's chief scientist, a NASA institution gives a pattern scale to apply as a starting point for discussions amongst absolutely everyone who could use it, together with scientists and communicators. They envision a scale knowledgeable with the aid of many years of experience in astrobiology, an area that probes the origins of life on the earth and opportunities of living someplace else.
Learn more about exoplanets here; https://brainly.com/question/1514493
#SPJ4
a spherical snowball is melting. its radius is decreasing at 0.1 cm per hour when the radius is 15 cm
The decreasing radial function has Q= 6.556994.
Given-
Radius of the snowball decreases as the function is decreasing.
The rate is -0.1cm per hour , i.e. 0.01m per hour.
Radial distance of the quadrupole is 15cm , i.e. 0.15m.
[tex]Q=k\frac{1}{\sqrt{4\pi \alpha x} } +Ky^2\\\\Q=\left \{ {{K=0} \atop {y\neq 0}} \right.[/tex]
[tex]Q=k\frac{1}{\sqrt{4\pi \alpha x} }[/tex]
The dipole moment of the snowball has shift or rise in the function.
This is rise in dielectric constant.
x=0.15m
α=0.1
k=9
Calculations-
Q=9 (1/√4x3.14x0.15
Q=9/√1.884
=9/1.37258
Q=6.556994
To know about dielectric constant-
https://brainly.com/question/13265076
#SPJ4
a scuba diver is wearing a head lamp and looking up at the surface of the water. if the minimum angle to the vertical resulting in total internal reflection is 25 degrees, what is the index of refraction of the water? assume the index of refraction of air
The index of refraction of the water is equal to 2.37.
What is snell's law?Snell's law can be described as a formula used to describe the relationship between the angles of incidence and angle of refraction, when the light passes through a boundary between two different medium like water, air, or glass.
Snell's law states that the ratio of the sines of the angle of incidence and angle of refraction is equal to the refractive index of the second medium which is equal to the ratio of the refractive indices of the two media
[tex]{\displaystyle {\frac {\sin \theta _{1}}{\sin \theta _{2}}}=n_{21}={\frac {n_{2}}{n_{1}}}={\frac {v_{1}}{v_{2}}}}[/tex]
Given, the angle of incidence, i = 25°
The index of refraction of air, n₂ = 1.00
By using Snell's law, we can find the index of refraction of the water:
[tex]{\displaystyle {\frac {\sin i}{\sin 90}={\frac {1}{n_{1}}}[/tex]
[tex]{\displaystyle n_1 = {\frac {1}{\sin 25}[/tex]
n₁ = 2.37
Learn more about Snell's law, here:
https://brainly.com/question/2273464
#SPJ1
Which formula is equivalent to D equals m over V?.
The formula equivalent to D=m/V is V=m/D.
The mass of a substance per unit of volume is referred to as density. This is represented in the formula as, D=m/V.
Here, D is density, m is mass, and V is the volume. To find which formula is equivalent to this formula, we have to follow the below steps.
Since V is present on left in all the given options. So let's take V as the subject of the formula.
By doing so, bring V to the left side of the density formula. Therefore,
VD=m
To eliminate D on the left side, divide both sides by D. We get,
[tex]\begin{aligned}\frac{VD}{D}&=\frac{m}{D}\\V&=\frac{m}{D}\end{aligned}[/tex]
So, the correct option is A.) V=m/D.
The complete question is -
Which formula is equivalent to D = m/V?
A.) V= m/D
B.) V = mV/D
C.) V = Dm
D.) V = D/m
To know more about density,
https://brainly.com/question/952755
#SPJ4
A ball of mass m moving with velocity v collides with another ball of mass 2m and sticks to it. The velocity of the final system is:A. v/3B. v/2C. 2vD. 3v
The velocity of the final system is v/3. Option A.
Solution:
The momentum of the body is defined as:
p = mv
The initial momentum of the body:
pi = mv
The final momentum of the two bodies after the collision is :
pf = (m+2m)v 1
By using the conservation of linear momentum for the collision between the bodies:
mv = (m+2m) v1
v/3 =v 1
Velocity is the primary measure of object position and velocity. It can be defined as the distance traveled by an object in a unit of time. Velocity can be defined as the displacement of an object in a unit of time. Velocity is the speed at which something moves in a particular direction. For example, the speed of a car traveling north on a highway, or the speed of a rocket after launch.
Learn more about Velocity here:-https://brainly.com/question/25749514
#SPJ4
A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized.
y = 0 + 1x + 2x2 +
where
y = traffic flow in vehicles per hour
x = vehicle speed in miles per hour
The following data were collected during rush hour for six highways leading out of the city.
Traffic Flow (y) Vehicle Speed (x)
1,257 35
1,330 45
1,226 35
1,336 50
1,350 55
1,124 25
Enter negative values as negative, if necessary.
Show the estimated regression equation (to 3 decimals, if necessary).
= + x + x2
What is the value of the coefficient of determination (to 3 decimals)? Note: report R2 between 0 and 1.
What is the value of the F test statistic (to 2 decimals)?
What is the p-value?
Selectless than .01between .01 and .025between .025 and .05between .05 and .10greater than .10Item 6
Using = .01, what is your conclusion?
SelectConclude a curvilinear relationship exists for traffic flow and speedCannot conclude a curvilinear relationship exists for traffic flow and speedItem 7
Predict the traffic flow in vehicles per hour for a speed of 39 miles per hour (to the nearest whole number).
A highway department is studying the relationship between traffic flow and speed. Traffic flow is the movement of individual drivers and vehicles between two points, as well as their interactions with one another.the value of the coefficient of determination is R− sq = 0.984
Speed is one of the basic parameters of traffic flow, and the two representations of speed are time mean speed and space mean speed. Enter data in excel. Make new column for values x2.,Now click on Data->Data Analysis and select regresion. In y data range, give range of y values. In x data range, give range of x and x2 values. Click ok.
From the above output:
The estimated regression equation is: y = 612.223+26.215x0.233.x
The coefficient of determination is: R− sq = 0.984
The F test statistic is: F= 90.14
The exact p-value is 0.0021. Therefore, correct option is: less than 0.01.
Can conclude a curvilinear relationship exists for traffic flow and speed because p-value is very small.
When x = 39
y =612.223 + 26.215(39)-0.233(39)2: 1280.58= 1281
Learn more about Traffic flow here:
https://brainly.com/question/21479413
#SPJ4
g a solenoid 30.0 cm long and with a cross-sectional area of 0.600 cm2 contains 415 turns of wire and carries a current of 90.0 a.for related problem-solving tips and strategies, you may want to view a video tutor solution of storing energy in an inductor.
The total energy contained in the coil magnetic field is 0.161 J.
Given that, Length of the solenoid = 30 cm = 0.3 m
Area of cross section = 0.6 cm² = 0.6* 10⁻⁴ m²
Number of turns = 415
Current I = 90 A
Total energy contained in the coil magnetic field is given by the formula,
energy density × l ×A
Energy density is given by the formula, B²/2μ₀
The formula to find out magnetic field in the solenoid B = μ₀ ni = μ₀*N*i/L = 4π× 10⁻⁷* 415 * 90/ 0.3 = 0.15 T
Energy density = B²/2μ₀ = (0.15)²/2* 4π× 10⁻⁷ = 0.000895 × 10⁷ = 8.95× 10³ J/m³
Total energy contained in the coil magnetic field is 8.95× 10³ * 0.3 * 0.6× 10⁻⁴ = 0.161 J
To know more about energy:
https://brainly.com/question/13077153
#SPJ4
the pressure in car tires is often measured in pounds per square inch ( lb/in.2 ), with the recommended pressure being in the range of 25 to 45 lb/in.2 . suppose a tire has a pressure of 39.5 lb/in.2 . convert 39.5 lb/in.2 to its equivalent in atmospheres.
The pressure will become 2.68 atm when expressed in atmospheres.
How do we convert from unit to another ?The act of shifting a quantity's measurement between two units of measurement is known as unit conversion. Usually, multiplicative conversion factors are used, which change the value of the measured amount without altering its effects.
The metric system typically requires moving a decimal point in order to translate from one unit to another.
The given data is 39.5 [tex]lb/in^2[/tex]
we have to convert it into atmospheres
The pressure is :
39.5 [tex]lb/in^2[/tex] × [tex]\frac{1 atm}{ 14.7 lb/in^2}[/tex]
because the conversion factor is 14.7 [tex]lb/in^2[/tex]
thus the given pressure becomes ;
Pressure = 2.68 atm
The pressure will become 2.68 atm when expressed in atmospheres.
To know more about conversions you may visit the link which is mentioned below;
https://brainly.com/question/21437879
#SPJ4
complete the concept map to describe how electrical events at the neuromuscular junction result in the mechanical process of skeletal muscle fiber contraction.
The terminal end of a motor nerve and a muscle (skeletal, smooth, or cardiac) form the neuromuscular junction (NMJ), which is a synaptic connection.
It is the location where the action potential is sent from the nerve to the muscle. The NMJ is regarded as a cholinergic synaptic junction that serves as the link between motor neurons and fibers of skeletal muscle. The NMJ should transmit the impulses from the presynaptic motor neurons to the postsynaptic muscle fibers in order to maintain sustained skeletal muscle contraction.
The word "neuromuscular" refers to this process of transmitting the acetylcholine-dependent nerve impulse (action potential) from neuron to muscle. The NMJ, also known as the motor endplate, is made up of synaptic membranes on either side of the presynaptic and postsynaptic membranes.
To know more about neuromuscular junction
https://brainly.com/question/15455831
#SPJ4
a 50 kg diver stands at the end of a 4.6 m diving board. where is the best place to put your rotational axis if you want to find the force on the pivot at point b?
The force on the pivot at point b is 1390 N. Considering that a force is a vector quantity, it has both a magnitude and a direction.
What is force ?A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity because it has both magnitude and direction.There is no net force exerted on an object and it is considered to be in equilibrium if the amount and direction of the forces acting on it are precisely balanced.A force that brings a body into mechanical balance is known as an equilibrant force. A body has zero acceleration when the vector sum of all applying forces equals zero, according to Newton's second law.Choose a rotation axis.
Στ = 0 (rotational equilibrium)
Στ = +(1.2m)⋅(F1) – (4.6m)⋅(50kg⋅9.8m/s²) = 0
F1 = 1880 N
ΣF = 0 (translational equilibrium)
ΣFy = F1 – F2 – mg
= 1880 N – F2 – (50kg⋅9.8m/s²) = 0
F2 = 1390 N
The force on the pivot is 1390 N
To learn more about force refer :
https://brainly.com/question/12970081
#SPJ4
what distance should one speaker be placed behind the other for the sound to have an amplitude 1.90 times that of each speaker alone?
When red light is directed normal to the surface of the soap film, the soap film appears black in reflected light. What is thinnest the film can be? let λ0 be the wavelength of red light in air.
The thinnest film of λ₀/2 can appear black in reflected light
.
What is distractive interference?When waves combine and totally cancel each other out, destructive interference occurs. Two waves must have the same amplitude travelling in opposing directions in order to interfere destructively.
Nature is home to a variety of fascinating wave phenomena that are not reducible to a single wave. We must look at the phenomenon of destructive interference based on the wave combination. We use the superposition principle, which states the following, to examine these:
The resulting wave function is the algebraic sum of the individual wave functions when two or more waves are passing through a medium.
The condition of distractive interference is: path difference = (m+1/2)λ₀ { where m = 0.1,2,3,.} and λ₀ is wavelength of light.
So, the thinnest film of λ₀/2 can appear black in reflected light.
Learn more about interference here:
https://brainly.com/question/13103744
#SPJ1
based on relative bond strengths, classify these reactions as endothermic (energy absorbed) or exothermic (energy released). AB+C --> AC+B
A+ BC --> AB + C
A2+C2 --> 2AC
B2+C2 --> 2BC
A2+B2 --> 2AB
Strongest Bond
A-B
A-A
B-B
C-C
B-C
A-C
Weakest Bond
Reactions that are Exothermic and Endothermic These emit energy in the form of heat, cold, light, sound, or vibration.
What distinguishes endothermic from exothermic reactions?The endothermic process is a term used to describe a reaction in which the system takes up heat from its environment.A reaction that is exothermic is the opposite of one that is endothermic. It emits energy onto its surroundings as heat or light.Chemical processes referred to as endothermic reactions occur when the reactants take in heat energy from their surroundings to create products.An exothermic reaction is one in which energy is given off as heat or light.In the same way that a stronger relationship releases more energy when it is established, a stronger bond also requires more energy to break.Because A-B is a strong connection that requires more energy to break than AC, which forms a weak bond and releases very little energy, the reaction is comparatively endothermic because more energy is taken in than released.As part of the reaction [rmA 2 + rmC 2] longrightarrow{{}}2{\rm{AC}}\] This reaction is endothermic because the A-C bond is weaker than the A-A and C-C bonds.To learn more about Exothermic and Endothermic Reaction refer to:
https://brainly.com/question/6506846
#SPJ4
consider the washington monument in washington, d.c. in the united states. what forces act between it and the earth and how do they compare?
The monument is attracted to Earth with a force equal to its weight, and Earth is attracted to the monument with an equal force. The situation can be represented with two force vectors of equal magnitude but pointing in opposite directions.
What is force ?An object with mass changes its velocity in response to a push or pull. Force is an external agent that has the power to alter a body's resting or moving state. It has a size and a movement.
Both contact and non-forces are different types of force. Examples of forces include gravitational force, nuclear force, frictional force, magnetic force, electrostatic force, spring force, and others.
Learn more about Force here:
https://brainly.com/question/12785175
#SPJ4
an object floats in water, with 40 %% of its volume submerged. part a what is its approximate density?
The approximate density = 600Kg/m³
To calculate the density of the object we have to consider volume of the object and the buyoant force.
How to calculate the density of the submerged object?
Let the volume of the object be V
Volume of object under water be Vw
Let Vw = V - 40V/100
Vw = 100V- 40V/100
Vw= 60V/100
Vw= 0.6V
Let P be the density of the object
We know, Buoyant force Fb = Vw×Pw×g
g = acceleration due to gravity
If buoyant force = weight of the object
Then
0.6V × Pwg = PVg
P= Pw× 0.6
Now, density of water = Pw = 1000
P = 1000× 0.6
P = 600 Kg/m³
Hence, density of object = 600 Kg/m³
To know more about buoyant force, click on https://brainly.in/question/53520
#SPJ4
what happens if you put water and sugar water next to each other with a membrane in between them? osmosis
Sugar molecules displace water molecules, so when sugar is added to water, the concentration of water decreases.
A solution can be created by dissolving sugar in water. If the solution contains enough sugar, like in a sugar syrup, it will suck water molecules from the food cells, reducing the meal's water activity. Osmosis is the mechanism responsible for this.
Osmosis is thus a particular instance of diffusion, specifically the diffusion of water. Solution two in the illustration above gains water more quickly than it loses sugar. This is due to how quickly water molecules can move through the selectively permeable membrane compared to how slowly sugar molecules can.
To learn more about osmosis from the given link:
https://brainly.com/question/23035889
#SPJ4
a 23.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min. what centripetal force (in n) must she exert to stay on if she is 1.00 m from its center? (enter a number.) n(b) what centripetal force (in n) does she need to stay on an amusement park merry-go-round that rotates at 3.00 rev/min if she is 5.00 m from its center? (enter a number.) n(c) compare each force with her weight.
a. The centripetal force (in N) that she must exert to stay if she is 1.00 m from its center is 403.80 N.
b. The centripetal force (in N) required to stay on an amusement park carousel that is rotating at 3.00 rev/min if it is 5.00 m from its center is 11.30 N.
c. Comparison of each force with her weigh is 1.79 : 0.050
Centripetal forceUse formula:
Fc = m (rω )² / r
We have,
ω = 40.0 rev/min = 0.314 rad/s
So,
a. The centripetal force (in N) that she must exert to stay if she is 1.00 m from its center is:
Fc = m (rω )² / r
= 23.0 (1.00 x 4.19)² / 1.00
= 403.80 N
b. The centripetal force (in N) required to stay on an amusement park carousel that is rotating at 3.00 rev/min if it is 5.00 m from its center is
Fc = m (rω )² / r
ω = 3 rev/min = 0.314 rad/s
Fc = 23.0 (5.0 x 0.314)² / 5.0
= 11.30 N
c. Comparison of each force with her weight is:
W = m x g
So,
403.80/ (23.00 x 9.8)
= 1.79
11.30/ (23 x 9.8)
= 0.050
Learn more about centripetal force here: https://brainly.com/question/20905151
#SPJ4
