The dissociation constant Ka for weak acid HA is 0.25× 10⁻⁷.
Equilibrium constant of a chemical reaction is known as dissociation associated with acid-base reactions. Species HA is an acid that dissociates into the conjugate base of the acid, A , and the hydrogen ion, H⁺ .
First, write the balanced formula for the partial ionization of the acid,
HA(aq) + H₂O(l) ⇌ A⁻ (aq)+H₃O⁺(aq)
Note that there is a 1:1 molar ratio everywhere For every mole of acid that ionizes in aqueous solution, you get 1 mole of its conjugate base and 1 mole of the hydronium ion H₃O⁺.
The equilibrium concentration of hydronium ions can now be calculated from the pH value of the solution.
pH = - log ( [ H₃O⁺]) = [ H₃O⁺ ]= 10⁻ᵖᴴ
For the given question we have a pH of 3.87 which means [H₃O⁺] = 10⁻³·⁸⁷
and concentration of H₂O is 0.400M.
By definition the acid dissociation constant Ka equals to
Ka = [ A⁻ ] [H₃O⁺ ] / [HA]
The acid dissociation constant equation is written using equilibrium concentrations. Therefore, if the reaction produced a hydronium ion concentration equal to 10⁻⁴ M, it also produced a conjugate base concentration equal to 10⁻⁴M. The initial concentration of the acid is much higher than the concentrations of the conjugate base and hydronium ion, so they can be approximated as constants.
Ka = 10⁻⁴ × 10⁻⁴/ 0.400 = 0.25× 10⁻⁷
Hence, the dissociation constant of acid Ka is 0.25× 10⁻⁷.
To learn more about Acid dissociation constant, refer:
https://brainly.com/question/3006391
#SPJ4
a 4.50-kg object moves through a distance of 13.8 m as it slows down uniformly from 22.0 m/s to 13.5 m/s. what is the magnitude of the acceleration of the ball?
The magnitude of the acceleration of the ball is 25.3 m/s²
Acceleration is the rate of change of the velocity of an item with appreciation to time. Accelerations are vector portions. The orientation of an item's acceleration is given by the orientation of the net pressure appearing on that object.
Acceleration is the charge at which velocity modifications with time, in terms of each speed and route. A factor or an object moving in a straight line is accelerated if it quickens or slows down. movement on a circle is extended despite the fact that the rate is consistent because the course is continually changing.
Calculation:-
v² = u² -2as
13.5² = 22² - 2a × 13.8
1182.25 - 484 = - 27.6a
698.25/27.6 = -a
a = - 25.3 m/s²
Learn more about acceleration here:-https://brainly.com/question/460763
#SPJ4
if you were to throw a ball straight ahead (no arc) at the same time as your friend drops a ball, which ball would hit the ground first? why?
If I throw a ball straight ahead and then my friend drop the identic ball to the ground, so both ball will hit ground together. It happens because the only force act to the both balls vertically is only gravity.
In this experiment, the two balls have different horizontal velocities, but that does not affect the vertical motion. Both balls start with zero vertical velocity, and accelerate at the same rate of gravity.
What is gravity?Gravity is a force that pulling together all matter. The more matter, the more gravity, so anything that have such a lot of matter like planets, moons, or stars pull more strongly. Gravity also affected by the mass of an object and the distance between objects.
Learn more about gravity https://brainly.com/question/2537310
#SPJ4
what is the lift (in newtons) due to bernoulli's principle on a wing of area 83 m2 if the air passes over the top and bottom surfaces at speeds of 290 m/s and 180 m/s , respectively?
Bernoulli's principle states that a wing with an area of 83 m² will experience a lift of 2767767.8 N when air moves over its top and bottom surface with velocities of aircraft 290 m/s and 180 m/s, respectively.
Bernoulli's principle is used to safely engineer the fluid flow within and around airplanes, engines and healthcare delivery devices by making sense of a fluid dynamics phenomenon. Bernoulli's principle connects a fluid's pressure to its speed.
The equation of Bernoulli's principle can be written as
P₁ + 1/2 p (v₁)² = P₂ + 1/2 p (v₂)²
P₁ - P₂ = 0.5* 1.29* 290² - 0.5* 1.29* 180² = 54244.5 - 20898 = 33,346.6
We know that, Pressure = Force/ Area
Force = Pressure * Area = 33,346.6* 83 = 2767767.8 N
Thus, the lift on the wing is 2767767.8 N.
To know more about Bernoulli's principle:
https://brainly.com/question/29654630
#SPJ4
A(n) 1786.9 kg car is coasting along a level
road at 24.7 m/s. A constant braking force
is applied, such that the car is stopped in a
distance of 55 m.
What is the magnitude of the braking force?
A(n) 1786.9 kg car is coasting along a level road at 24.7 m/s. A constant braking force is applied, such that the car is stopped in a distance of 55 m. The magnitude of the braking force will be 9917.3 N
given
mass = 1786.9 kg
initial velocity = 24.7 m/s
final velocity = 0
distance covered = 55 m
2as = [tex]v^{2} - u^{2}[/tex]
2 * a * 55 = 0 - [tex]24.7 ^{2}[/tex]
a = - 5.55 [tex]m/s^{2}[/tex]
Force = mass * acceleration
= 1786.9 * 5.55 = 9917.3 N
The magnitude of the braking force will be 9917.3 N
To learn more about force here :
https://brainly.com/question/7362815
#SPJ1
Johnny drives to Wisconsin (1920 miles) in 32 hours. He returns home by the same route in the same amount of time. Determine his average velocity
Answer: 60mph
Explanation: He drives to Wisconsin and back so multiply both numbers by 2. Speed=distance divided by t
So 3840 divided by 64 is 60.
Which method would be most helpful in locating the center of gravity of an object?.
Plumb line technique, is method would be most helpful in locating the center of gravity of an object.
To calculate the center of gravity of an object, we need to sum the weights multiplied by the distance from the starting point and divide by the total weight of the object.
CG = (aM + bN + cP)/(M + N + P)
Plumb line technique:
When a object is freely suspended, its center of gravity is always directly below the suspension point. A plumb bob is a heavy weight attached to a string that hangs perpendicular to the ground. The line drawn is vertical and passes through the object's center of mass. Repeat this process to pick another attachment point and draw a line along the second vertical line. The centroids of all these objects are at the intersection of the vertical lines. The intersection of two or more vertical lines from a vertical line is the centroid of the object.
If an object is symmetrical and uniformly dense, it is easy to guess its centroid.
To learn more about Center of gravity, refer:
https://brainly.com/question/1419972
#SPJ4
Is rebel a synonym or antonym of the word conform
if the capacitor and inductor in part a are connected in an l-c circuit, what will be the resonance angular frequency of that circuit?
What is Angular frequency?
The length of time it takes an item to complete one oscillation is called the time period.The shortest angle an item makes when spinning in a circle from its starting location to its stopping position is known as the angular displacement.In other terms, you may say that it is the rate at which rotation changes or the pace at which changes in sinusoidal waves occur. It is the angular displacement of a wave element per unit of time. For instance, if you describe an object as having a high angular frequency, you are describing how quickly it turns. The size of the angular velocity is known as the angular frequency.However, it is a scalar quantity, meaning that it lacks direction.
To learn more about Angular Frequency do follow
https://brainly.com/question/17080824
#SPJ4
A 1600kg car is traveling over a hill that has a radius of curvature of 25m. The car is slowing down as it goes over the hill. It slows down at a constant rate from a speed of 25ms to a speed of 10ms over a distance of 50m ending at the top of the hill. The net acceleration of the car at the top of the hill is most nearly.
The net acceleration of the car at the top of the hill is 6.6 m/s²
According to the question,
Mass of the car, m = 1600 Kg
Final speed of the car = 10 m/s
Distance covered by the car, d = 50 m
Radius of curvature of the hill, r = 25 m
Initial speed of the car, u = 25 m/s
The acceleration of the car is calculated by applying the third equation of motion,
v² = u² + 2as
where, v is the initial speed
u is the final speed and
a is the acceleration of the car
2as = v² - u²
a = [tex]\frac{v^{2-u^{2} } }{2a}[/tex]
a =[tex]\frac{10^{2}- 25^{2} }{2 X 50 }[/tex]
a = - 5.25 [tex]m/s^{2}[/tex]
The centripetal acceleration of the car at the top of the hill is given as,
[tex]a_{c} =\frac{v^{2} }{r\\}[/tex]
[tex]a_{c} =\frac{10^{2} }{25} \\a_{c = 4m/s^{2}[/tex]
The net acceleration of the car at the top of the hill is calculated as;
[tex]a_{net} = \sqrt{a^{2} } +a_{c^{} }[/tex]
[tex]a_{net} = \sqrt{-5.25} ^{2} - 4^{2}[/tex]
= 6.6[tex]m/s^{2}[/tex]
Thus, the net acceleration of the car at the top of the hill is 6.6 m/s²
For more question on acceleration
https://brainly.com/question/22846638
#SPJ1
Macro put a pot of water on eggs. Half an hour later, he returned to find the pot dry. This is an example of.
Macro put a pot of water on eggs. Half an hour later, he returned to find the pot dry. This is an example of vaporization.
In the field of science, vaporization can be described as a process by which the liquid can be evaporated to a gaseous phase.
Vaporization can occur either due to boiling or evaporation.
In the situation above, as Macro has put a pot of water in eggs. As he kept the water on boiling for half an hour, the liquid water evaporated and changed into gaseous form.
As a result, all the water dried from the pot. This process is an example of vaporization.
To learn more about vaporization, click here:
https://brainly.com/question/24258
#SPJ4
The ability of a covalently bonded atom to attract the shared electrons is called.
Electronegativity is the capacity of a covalently connected atom to draw the shared electrons.
The capacity of an atom to draw the shared electrons from a covalent connection to itself is known as electronegativity. If the electronegativity of the linked atoms is the same, then the shared electrons will be distributed evenly. The electrons in a bond will not be distributed evenly if one of the atoms is more electronegative and hence attracts more of the bond's electrons. The more electronegative atom will "take" the electrons, resulting in two ions and an ionic connection, if the difference in electronegativity is great enough to prevent any sharing of the electrons.
Think of a tug-of-war match. The rope remains in the middle if the two teams are of equal strength. The rope is tugged in the direction of the team that is more powerful. The rope eventually ends up on the side of the stronger team if one team is much stronger than the other. If this happens, the weaker team is no longer able to hold onto the rope. Chemical bonding are comparable to this. The electrons are shared evenly if the electronegativity of the two bonding atoms is equal. The bond's electrons are more drawn to an atom if it has a higher electronegative charge. The electrons won't be shared, leading to an ionic bond, if one atom is much more electronegative than the other atom.
Know more about electronegativity at,
https://brainly.com/question/2060520
11 How far away does a ball land that rolls off a 2 m high table rolling at 9 m/s
a) 5.75 m
b) 10.25 m
c) 13.75 m/s
d) none of the above
*Please Show Equation*
Thank You!
Answer:
H = 1/2 g t^2 time to fall H
t = (2 H / g)^12 = (2 * 2 / 9.80)^1/2 = .639 sec
Sx = Vx * t = 9 m/s * .639 s = 5.75 m horizontal distance traveled
What minimum height h must the track have for the marble to make it around the loop-the-loop without falling off?.
The minimum height of the loop without falling it off is 2.7(R-r).
What is height?
height is the measurement of someone or something .
Sol-It is given that capital art Israelis of loop. The loop. Small M. Is the mass of the marble. Small art is radius of the marble. We have to find minimum height edge. The track must have for the marble to make it around the loop. The loop without falling off coming to the solution. We have art is radius of solid marvel. Capital art is radius of circular, loop. Track moment of inertia of this is all in I is equal to two divided by five M. R squared. Thank you lad velocity of the marvel is equal. Do your makeup when the slides down the incline plane and regis the top of the loo. Let this be equation to and let this be equation three gain in potential energy related to center of mass is equal to mg. Multiplied by to capital R minus smaller. Let this be equation four. From law of conservation. Oh Nrg we have Equation one is equal to equation too plus equation three plus equation four substituting we have M G multiplied by H plus R is equal to half M V squared plus half I omega squared plus MG multiplied by two R -R. M G multiplied by H plus R. Is equal to half M B squared plus half. Multiplied by two divided by five M R squared. Omega square plus MG.
Hold square plus M G. Multiplied by two R minus R divide M G. On both sides we have H. Plus art Is equal to seven divided by 10, multiplied by R -R. Plus to r minus R. H plus odd as it will do 2.7 R -1.7 are therefore H is equal. Do 2.7 multiplied by R -R. Hence it can be concluded that height of the track. H is equal to 2.7 multiplied by R -R.
To know more about height click-
https://brainly.com/question/73194
#SPJ4
a ferris wheel with a radius of m is rotating at a rate of one revolution every minutes. how fast is a rider rising when his seat is m above ground level?
Using the concepts of Ferris wheel, we go that the speed of the rider is 2πm /min above ground level if a Ferris wheel with a radius of m is rotating at a rate of one revolution every minutes
The height of the rider at any time is (x + m) .
From the right triangle
sinθ = x/m ---------------(eq1)
Differentiating both sides with respect to t, we get:
d(sin)/dt= [(1/m)×(dx/dt)]
Using chain rule,
cosθ×(dθ/dt)= [(1/m)×(dx/dt)] -------------(eq 2)
When the height of the rider is 1m.
X = m - m
Then the value of x is 0.
Put the value of x in the equation (I)
Sinθ = 0/m = 0
We need to calculate the value of (dθ/dt)
A Ferris wheel makes 1 revolution per minute.
(dθ/dt)= 2π
Now, substitute the value of sinθ and (dθ/dt) in equation (II)
√1-0 x 2π= [(1/m)×(dx/dt)]
dx/dt =2πm
Hence, if a Ferris wheel with a radius of m is rotating at a rate of one revolution every minutes, the speed of rider rising when his seat is m above ground level is to be 2πm meters /sec.
To know about Ferris wheel, visit here :
https://brainly.com/question/14859201
#SPJ4
(q011) suppose you are studying a visible-light image of a distant galaxy, and you see a dark lane cutting across the bright disk. that dark line is most likely caused by
The reason some regions of the Milky Way's disk appear dark is because
stars in this direction are obscured by interstellar dust.
Astronomers have observed many different stars at each stage of their formation process. They have moved away from the Sun over the past 4.5 billion years. Location-to-location density variation increases as the cloud collapses. Once a protostar with a mass of less than 0.08 solar mass is formed, its internal temperature never reaches a sufficient level to initiate thermonuclear fusion. This quirky star is called a brown dwarf and sits between a planet (such as Jupiter) and a star. Coalsacks are clouds of interstellar dust about 600 light-years away that block light from the stars from reaching us. It is a type of celestial object called a dark nebula. The "inside" star that can be seen with binoculars is actually closer than the coal sack itself.
Learn more about thermonuclear here-
https://brainly.com/question/12933041
#SPJ4
A ball rolls across a table at a constant speed for 0.62 m. It then falls onto the floor. It takes the ball 0.35 seconds to cover the 0.62 m path, as shown in the drawing below. The table top is 1.2 meters above the floor. Find x the distance that the bail travels horizontally after it eaves the table top.
Answer:
Explanation:
Missing drawing!
You are seated in a bus and notice that a hand strap that is hanging from the ceiling hangs away from the vertical in the backward direction. From this observation, you can conclude that.
From this observation, You cannot conclude anything about the direction of the velocity of the bus.
The fact that the hand strap moves backward from vertical is assumed.
The direction of the strap depends on the velocity of the bus; if the bus is moving faster in one direction, the strap will move faster in the opposite direction.
The strap is bent backwards by the pseudo-action on it, which is the cause of the movement backwards.
angle of inclination is given by Tan∅ = α/g
where a=bus acceleration
∅ = inclination of strap with respect to vertical
Consequently, we are unable to draw any conclusions about the velocity of the bus direction of motion.
learn more about velocity here
https://brainly.com/question/14280924
#SPJ4
How can planetary scientists estimate the ages of the outflow channels and valley networks on mars?.
Planetary scientists estimate the ages of the outflow channels and valley networks on mars by craters
Due to impact of meteorite, volcanic activity, or an explosion , there occurs a depression at a certain area , that is called crater .
Ages of the outflow channel and valley network can be estimated by counting the number of impact craters. Because of the almost constant rate at which impacts have occurred in the solar system .
To learn more about crater here :
https://brainly.com/question/1184201
#SPJ4
q5: suppose the air track was tilted during the experiment. would momentum be conserved in the collision? why or why not?
According to the given statement No, momentum is not conserved on a tilted track.
What does the word "momentum" mean?Momentum can be viewed as a body's "power" while it is moving, or the amount of force it can exert on another body. For instance, a baseball (small mass) thrown quickly can have the same momentum as a bowling ball (big mass) going extremely slowly (low velocity) (high velocity).
What is the momentum unit?Therefore, the Newton-second can be used as the unit measuring momentum (Ns). In the CGS system, the unit of momentum is the gram-centimeters per second (gcm/s), where the mass is measured in grams and the speed in centimeters per second.
To know more about Momentum visit:
brainly.com/question/27358803
#SPJ4
A stone p,thrown upward with an velocity 20m/s.At the sametime and 30m vertical above, a second stone is released. After what time and at what height do they collide(g=10ms‐²)
The time and height at which they collide at 1 second and 15 m respectively when the stone is thrown upward with a velocity of 20m/s.
Let ball A be at the bottom and ball B be at the top.
Assume that you are sitting at B and watching A move.
You (B) appear to be content with yourself. However, both you (B) and A are accelerating in the same general direction. So, the acceleration of A relative to you (B) is 0.
As a result, A will appear to be approaching you uniformly moving at 20 m/s toward you.
A reaches you (B) in 1 second if the distance of 20 meters is divided by that speed.
Now that you have assumed you were stationed at B, you have thought about these motions and time. However, whichever reference frame you use, the time it takes for A to reach B shouldn't vary.
The collision between A and B occurs in 1 second.
Assuming g = 10 m/s2,
B falls freely and travels a distance of 1/2(g)([tex]1^{2}[/tex])=5.
They thus collide at a height of (20-5)m, or 15m, above the earth.
To read more about velocity, visit https://brainly.com/question/18084516
#SPJ1
If a person is pushing against a stationary wall with a force of 20 n, what force is being exerted back on the person?.
If a person is pushing against a stationary wall with a force of 20N, then the force of same magnitude will be exerted back on to the person by the wall.
What is Force?Force is the external agent which is capable of changing an object's state of rest or motion. A force can be a push or a pull. It has both the magnitude and direction.
According to Newton's third law of motion, forces always acts in equal but opposite pairs. This law can also be defined as for every action, there is an equal but opposite reaction. It means that when a person pushes on a wall with a force of 20N, the wall pushes back on the person with a force equal in strength to the force which is exerted i.e., 20N but opposite in direction.
Learn more about Force here:
https://brainly.com/question/13191643
#SPJ1
how much work must be done on a particle with a mass of m to accelerate it from rest to a speed of 0.089 c ? express your answer in terms of mc2 .
0.14 mc² work is done on a particle with a mass of m to accelerate it from rest to a speed of 0.089 c
Define kinetic energy.A particle or an item that is in motion has a sort of energy called kinetic energy. When an object undergoes work, which involves the transfer of energy, by exerting a net force, the object accelerates and thereby gains kinetic energy.
kinetic energy of mass particle: KE = mc²( γ- 1 )
here γ is Lorentz constant
γ = [tex]\frac{1}{\sqrt{1 - \frac{v}{c}^{2} } }[/tex]
γ = [tex]\frac{1}{\sqrt{1 - \frac{0.089c}{c}^{2} } }[/tex]
γ = 1.14
here,
particle start from rent so initial KE = 0
and final KE = mc²(1.14 - 1 )
final KE = 0.14mc²
so,
work done to increase speed of particle
W = final KE - initial KE
Work = 0.14 mc²
To know more about kinetic energy, visit:
https://brainly.com/question/26472013
#SPJ4
calculate the reynolds numbers for the flow of water through a garden hose with a radius of 0.900 cm, when the nozzle is attached to the hose. the flow rate through the hose is 0.500 l/s.
35820 is Reynold's number which thereby also is greater than 2000 making the flow turbulent
Reynold’s number is the magnitude of inertial forces upon coefficient of viscosity i.e. viscous forces present in the fluid that is put through movement within the fluid due to various fluid velocities.
Re = 2ρvr / η ------- Equation 1
Here ρ = density of water = 1000 kg/m³
η = coefficient of viscosity of water = 1.005 x 10⁻³
r = 0.9 cm = 0.9 x 10⁻² m
For v
v = Q(Flow rate) / A(area)
Q = 0.5 L/s = 0.0005 m³/s
A = πr² = 3.14 x (0.9 x 10⁻² )² => 2.54 x 10⁻⁴m
v = 0.0005 / 2.54 x 10⁻⁴
≅ 2 m/s
Putting all the values in equation 1
Re = 2 x (10³) x (2) x ( 0.9 x 10⁻²) / 1.005 x 10⁻³
≅ 35820
∴ Re > 2000, The flow is not laminar.
To solve more questions on Reynold's Number visit
https://brainly.com/question/16928290
#SPJ4
Laminar flow requires a Reynolds number lower than 2000.
When considering a fluid in motion, the flow of the fluid is referred to as laminar flow if it exhibits a streamlined and smooth flow rather than fluctuations that are erratic and chaotic. In the beginning, Irish innovator Osborne Reynolds categorized fluid flow as turbulent or laminar.
First, use the expression for the fluid's flow rate Q in terms of tube area A and the velocity of the flowing fluid v to calculate the velocity of the fluid v. As a result, the expression comes from,
Q = Av
v = Q/A
The only way to possibly achieve laminar flow through the hose or the nozzle would be to significantly reduce the flow rate to a level below the Reynolds number of 2000.
Learn more about Laminar Flow here:
https://brainly.com/question/14991929
#SPJ4
_____ include any election that signals a significant large-scale change in the popular allegiance of voters from one party to another.
critical election includes any election that signals a significant large-scale change in the popular allegiance of voters from one party to another.
Since the 17th century, elections have been the primary method used to carry out representative democracy in modern times. Elections may be held to fill positions in the legislative, executive, judicial, and occasionally regional and municipal branches of government. Numerous other private and commercial organizations, including clubs, non-profit organizations, and corporations, also use this procedure.
The practice in the democratic archetype, ancient Athens, where elections were regarded as an oligarchic institution and most political offices were filled using sortition, also known as allotment, in which officeholders were chosen by lot, contrasts with the use of elections as a tool for choosing representatives in modern representative democracies.
To learn more about Elections visit here:
brainly.com/question/11185151
#SPJ4
what is the total magnification of a microscope with two lenses when one lens has a magnification of 10x, and the other lens has a magnification of 30x?
The total magnification of a microscope or set of lenses is 300x.
Magnification is the process of enlarging an object's image in relation to its size using a mirror, whether it be convex or concave.
There is no unit for magnification. The fact that it is a measurement ratio is the cause. It is the proportion of an object's size to that of an image.
Calculating the overall magnification is straightforward math once each lens's specific magnification is known. Add the combined magnification of the lenses.
Given
magnification of the first lens, l1 = 10x
magnification of the second lens, l2 = 30x
Total magnification = product of the magnification of all the lenses.
Thus, to compute the total magnification of a microscope, multiply the two lenses' magnification powers.
Consequently, the lenses' combined magnification will be - 10*30.
Thus the total magnification of a microscope or set of lenses is 300x.
Learn more about magnification here:
https://brainly.com/question/28957672
#SPJ4
a 75 kg road bicycle racer rides down the highway from pikes peak. during one stretch of the ride, he descends 5 meters in 12.5 seconds, while accelerating from 35 km/hr to 55 km/hr. assuming rotational kinetic energy and dissipative forces to be negligible, what average power is supplied by the gravitational force during this time?
The average power supplied by the gravitational force during this time is 21717 Watt.
The mass of the road bicycle racer riding down the highway is 75kg.
The height through which he descends is 5 meters and the time taken by it is 12.5 seconds, the initial velocity of the bicycle is 35km/h(9.7m/s) and the final velocity of the bicycle is 55 km/h(15.27m/s).
The acceleration applied due to earth on the bicycle can be found as,
V²-U² = 2aS
V is the final velocity,
U is the initial velocity,
a is the acceleration created due to earth,
s is the height of the bicycle.
Putting values,
(15.27)²-(9.7)² = 2(a)(5)
a = 13.9m/s².
Now, the work done by the earth on the bicycle is,
W = 75(13.9)(5)
W = 267712.5 Joules.
The power supplied = Work done/time
Power supplied = 21717 Watt.
So, the power supplied by earth is 21717 Watts.
To know more about Power, visit,
https://brainly.com/question/1634438
#SPJ4
a resistor dissipates 1.5 w when it is connected to a battery with a potential difference of 12 v. what is the resistance of the resistor?
Answer:
96 Ω
Explanation:
Power = V^2 / R
1.5 = 12^2 / R
R = 12^2 / 1.5 = 96 Ω
As you hold your leg in this position, the upper leg exerts a force on the lower leg at the knee joint. What is the magnitude of this force?
The upper leg applies the exact same amount of force on the knee as the tendon applies on the lower leg. f = 215.6 N
This is only logical as the net result of these forces is the canceling out and the leg staying stable in its position.
The magnitude of a force is how much it accelerates the object it acts on and is represented by a scalar. Size can also be viewed as a strength. Riding a bicycle is a simple example of force magnitude. It is a simple machine that converts human-supplied energy into kinetic energy.
The force exerted on the pedal results in the formation of energy. Work is done to convert this energy into kinetic energy and move the bicycle forward. Force magnitude describes the sum of all forces acting on an object. If all forces act in the same direction the force magnitude increases. If forces act on an object in different directions the magnitude of the force will decrease.
Learn more about The magnitude here:-https://brainly.com/question/24468862
#SPJ4
an object is revolving uniformly in a horizontal circle of radius 1.0 m with a speed of 1.0 m/s, calculate its centripetal acceleration. g
The centripetal acceleration is 1 m/s^2 .
Centripetal force is applied when there is a object revolving in circular path. This path is applied in the opposite direction of the center of the circular path and also this would be perpendicular to the velocity direction.
The value of centripetal force is
Fc = [tex]\frac{mv^{2} }{r}[/tex]
where m is the mass of the object
v is the velocity and r is the radius of the object.
Now as we know that
F = ma
where a is the acceleration
so we can write that
a = v^2/r
putting the values, we get
a = 1^2/1
a = 1/1
a = 1 m/s^2
Hence the centripetal acceleration is 1 m/s^2.
To learn more about centripetal acceleration, visit here
https://brainly.com/question/17123770
#SPJ4
5. What is the formula for Newton’s Second Law?
Answer:
F=ma ( Force=Mass x Acceleration)
Explanation:
Answer: F = M*A
Explanation: F= force M= mass of an object A=acceleration
