problem 1-45: the column is made of concrete having a density of 2.30 mg/m3 . at its top b it is subjected to an axial compressive force of 15 kn. determine the average normal stress in the column as a function of the distance z measured from its base.

The ball's exit velocity from the boy's hand was 39.4 m/s.

The time it took the ball to reach its highest point is 4 seconds, which is the explanation.

Use the first equation of motion, v = u + gt, to determine the ball's initial velocity when it left the boy's hand.

Initial velocity (v) is used here. terminal velocity is u. t is the amount of time, and g is the gravitational acceleration, with a value of 9.8 m/s2.

At its highest point, the ball's final velocity, v, equals zero.

When the supplied values are substituted in the equation above, we get 0=u-9.8m/s2.

Therefore, the ball's exit velocity from the boy's hand was 39.4 m/s.

To know more about First equation of motion visit:

brainly.in/question/12883484

#SPJ1

The skateboard was initially at rest, and by the time of Newton's first law, it would still be in that state. This law asserts that unless acted upon by an external or net force, a body will remain at rest or continue in a condition of uniform motion with constant velocity (in a situation where not only one force is in action).

According to this law, in order to move the skateboard, it needs an external source of force, which the skateboarder indirectly provides.

The skateboarder reverses forward on the pavement (that is he applies a force on the road in a direction opposite the direction of intended motion).

According to Newton's third law, the skateboarder's action results in an equal and oppositely directed reaction from the road on the skateboarder.

According to Newton's third law, action and response are equal but directed in opposite directions. As a result, the road pulls the skateboarder forward in response to this rearward force, which moves both the skateboarder and the skateboard in the same direction.

The acceleration of the cart is inversely related to its mass. As a result, the acceleration of the cart will decrease as its mass increases.

To learn more about Newton's laws of motion from given link

https://brainly.com/question/11593073

#SPJ1

In no case can velocity be constant while there is non-zero acceleration.

To learn more about acceleration refer to :

https://brainly.com/question/460763

#SPJ4

Understanding the difference between an explanation and an observation is crucial for success in science (essentially a hypothesis that seeks to explain what we observe).

To learn more about observation refer to:

https://brainly.com/question/584814

#SPJ4

(a.i) The average velocity of the particle for period (1, 2) is 0 cm/s.

(a.ii) The average velocity of the particle for period (1, 1.1) is - 3.1 cm/s.

(a.iii) The average velocity of the particle for period (1, 1.01) is -3.3 cm/s.

(a.iv) The average velocity of the particle for period (1, 1.001) is -3 cm/s.

(b) The instantaneous velocity of the particle when t=1 is - 2 cm/s.

The average velocity of an object is the ratio of the total displacement to total time of motion of the object.

v = ( total displacement ) / ( total time )

v = ( s ) / ( t )

The average velocity of the particle for period (1, 2)

s = 2 sin π (1) + 3 cos π (1)       +      2 sin π (2)  +  3 cos π (2)

s = ( 0 - 3 ) + ( 0 + 3 ) = 0 cm

v = ( 0 cm ) / (1 + 2 ) = 0 cm/s

The average velocity of the particle for period (1, 1.1)

s = 2 sin π (1) + 3 cos π (1)       +      2 sin π (1.1)  +  3 cos π (1.1)

s = ( 0 - 3 ) + ( -0.62  - 2.85 ) = -6.47 cm

v = ( -6.47 cm ) / ( 1 + 1.1 )

v = -3.1 cm/s

The average velocity of the particle for period (1, 1.01)

s = 2 sin π (1) + 3 cos π (1)       +      2 sin π (1.01)  +  3 cos π (1.01)

s = ( 0 - 3 ) + ( -0.63  - 3 ) = -6.63 cm

v = ( -6.63 cm ) / ( 1 + 1.01 )

v = -3.3 cm/s

The average velocity of the particle for period (1, 1.001)

s = 2 sin π (1)  + 3 cos π (1)       +      2 sin π (1.001)  +  3 cos π (1.001)

s = ( 0 - 3 ) + ( -0.0063  - 3 ) = -6.0063 cm

v = ( -6.0063 cm ) / ( 1 + 1.001 )

v = -3 cm/s

The instantaneous velocity of the particle when the time = 1, is calculated as follows;

v (t) = ds / dt

v (t) = 2 cosπ t  - 3 sin π t

v (1) = 2 cosπ (1)  - 3 sin π (1)

v ( 1 ) = -2 cm /s

Learn more about instantaneous velocity here: https://brainly.com/question/2234298

#SPJ1

Using wheel clocks is the best option.

To stop an aerial device from moving or chattering on an angled frozen solid surface, wheel chocks are intended to be installed in front of and behind the wheels of the aerial device. The aerial equipment can't move or chatter since the chocks mechanically stop the wheels from rotating. Additionally, they can be utilised to keep the apparatus stable on the surface by adding an additional layer of friction between the ground and the object. Wheel chocks are an efficient way to stop aerial equipment from shifting or chattering on an angled frozen solid surface when used in conjunction with hand stabilisers.

To learn more about friction

brainly.com/question/24186853

#SPJ4

Zipping 3.04 metres distance in north, precisely 2.56 metres northwest, and finally plunging 0.6 metres straight down into the security of its burrow 4.59 m later, the rabbit has travelled from its starting place.

The rabbit initially travels 3.04 metres north, then 2.56 metres northwest. The Pythagorean theorem may be used to determine the hypotenuse of a right triangle with 3.04 m and 2.56 m-long legs in order to determine the total distance the rabbit has travelled in a north-westerly direction:

d = sqrt(3.04^2 + 2.56^2)

sqrt(15.984), sqrt(9.4304 + 6.5536), and d = 3.99 m

The vertical component of the rabbit's distance travelled must now be included. The rabbit descended 0.6 metres below earth. The rabbit travels a total distance of d = sqrt(15.984) + 0.6 m d = 3.99 m + 0.6 m = 4.59 m from its starting place.

learn more about distance here:

https://brainly.com/question/15172156

#SPJ4

A body's inertia is a passive characteristic that only allows it to oppose active agents like forces and torques. A moving body continues to move not because of its inertia but rather because there is no external force present to cause it to slow down, veer off course, or accelerate.

The idea of inertia states that an object will keep moving in the same direction until another force causes it to change its direction or speed.

It is important to recognise that Newton used the slang phrase "the principle of inertia" when he discussed it in his first law of motion.

resistance of the body to changes in momentum

To learn more about Inertia refer to:

brainly.com/question/1140505

#SPJ1

Real: True statements

Not real: False statements:

Earth observation is the gathering of information on the physical, chemical, and biological processes occurring on planet Earth using remote sensing technology, often via satellites carrying imaging equipment. Earth observation is used to monitor and assess environmental changes, both natural and man-made, as well as their state.

Seismic and Global Positioning System (GPS) stations, as well as floatable buoys for monitoring ocean currents, temperature, and salinity, are some of the techniques used today for Earth observation. Air quality and rainfall patterns are also recorded by land-based stations. Space-based technologies provide repeatable datasets that provide a unique opportunity to gather data about the world when combined with appropriate technique development and analysis.

For such more question on observation:

brainly.com/question/15082348

#SPJ4

Following question may be like this:

Consider the following observations. Classify each observation based on whether it is a real observation (a true statement of something we can actually see from Earth) or one that is not real (a statement of something that does not really occur as seen from Earth).

- Mercury goes through a full cycle of phases

- Moon rises in east, sets in west each day

- stars circle daily around north or south celestial pole

- positions of nearby stars shift slightly back and forth each year

- a distance galaxy rises in east, sets in west each day

- we sometimes see a crescent Jupiter

- a planet beyond Saturn rises in west, sets in east

The equations for the camber and half thickness distributions are:

A. For 0 < (x/c) < 0.6 n = 0.3(x/c), t = 0.1(x/c)

B. For 0.6 < (x/c) < 1.0 n = 0.45 (1 - x/c), t = 0.15 (1 - x/c)

The camber and half thickness distributions can be found using the thin airfoil theory. According to this theory, the camber and half thickness distributions are given by:

n = (Y upper - Y lower ) / 2 (for camber)

t = (Y upper + Y lower ) / 2 (for half thickness)

For the given airfoil, we can find the camber and half thickness distributions by applying the above equations to each segment separately.

The theory simply states that flow around an airfoil is described as two-dimensional flow around a thin airfoil. It is possible to imagine it addressing an airfoil with zero thickness and infinite wingspan.

For 0 < (x/c) < 0.6

Y upper = 0.4(x/c), Y lower = 0.2(x/c)

Therefore,

n = (0.4(x/c) - 0.2(x/c)) / 2 = 0.3(x/c)

t = (0.4(x/c) + 0.2(x/c)) / 2 = 0.1(x/c)

For 0.6 < (x/c) < 1.0

Y upper = 0.6(1 - x/c), Y lower = 0.3(1 - x/c)

Therefore,

n = (0.6(1 - x/c) - 0.3(1 - x/c)) / 2 = 0.45 (1 - x/c)

t = (0.6(1 - x/c) + 0.3(1 - x/c)) / 2 = 0.15 (1 - x/c)

So, the equations for the camber and half thickness distributions are:

A. For 0 < (x/c) < 0.6 n = 0.3(x/c), t = 0.1(x/c)

B. For 0.6 < (x/c) < 1.0 n = 0.45 (1 - x/c), t = 0.15 (1 - x/c)

Learn more about thickness here:

https://brainly.com/question/23622259

#SPJ4

The mechanical energy loss magnitude due to friction acting on the slider.

To learn more about Mechanical energy from the given link:

https://brainly.com/question/29509191

#SPJ1

Explanation:

open the image for detailed solution

Since a tropical cyclone's eyewall has the greatest winds, the storm often weakens during this time when the inner wall is "choked" by the outer wall.

A ring of tall thunderstorms that form the eyewall produce intense rains and typically have the greatest winds. Wind speed, a measure of the storm's strength, can alter due to changes in the eye and eyewall's structure. The cycle of eyewall replacement is one characteristic of major hurricanes. To put it simply, a new eye starts to form around the old one. The old eye is replaced with the new one, whose diameter gradually shrinks.

Learn more about Eyewall

brainly.com/question/29056934

#SPJ4

The equilibrium distance between the centers of the balls will be

x =[tex](2q1q2lmg)^{\frac{1}{3} }[/tex].

To find the equilibrium distance between the two balls, we need to consider the forces acting on each ball. The main forces acting on each ball are the gravitational force and the electrostatic force between the two balls.

The gravitational force on each ball is given by:

Fg = mg (where g is the acceleration due to gravity)

The electrostatic force between the two balls is given by:

Fe = kq1q2/x² (where k is Coulomb's constant, and x is the distance between the centers of the two balls)

For equilibrium to occur, the net force on each ball must be zero. Therefore, we can set up the following equation:

Fg - Fe = 0

Substituting in the values for Fg and Fe, we get:

mg - (kq1q2/x²) = 0

Solving for x, we get:

x =[tex](2q1q2lmg)^{\frac{1}{3} }[/tex].

where l is the length of the silk threads.

So, the equilibrium distance between the centers of the balls will be:

x =[tex](2q1q2lmg)^{\frac{1}{3} }[/tex].

To know more about net force, visit:

https://brainly.com/question/13410291

#SPJ4

Water has the highest surface tension than ethanol, methanol, or ethanal.

The cohesive nature of a liquid's molecules gives rise to a property of the liquid's surface known as surface tension, which enables the liquid to resist the action of an outside force. After mercury, water has the highest surface tension of any liquid. This is because hydrogen bonds are present in water molecules, which gives water its high surface tension. As a result of water's surface tension, water molecules that are in close proximity to one another at the liquid's surface (where they are in contact with air) stick together to form an invisible film. When water is heated to 25 degrees Celsius, its surface tension is 72 dynes/cm. To crack a film of water on the surface that is one centimeter long and requires 72 dynes of force.

To learn more about surface tension, click here:

https://brainly.com/question/11348644

#SPJ4

You must add up all of the forces operating on a certain object in order to calculate the net force acting on that object.

To learn more about net force refer to:

https://brainly.com/question/11556949

#SPJ1

P(Event) is a probability that an event will occur, and conditional probability may be used to compute it. Given that an athlete has taken steroids, the likelihood that they will test positive for steroid usage is 0.72, or 72%.

If steroids have been used, Test A has a 0.9 chance of being positive, hence P(Test A Positive | Steroids Used) = 0.9

If steroids have been used, there is a 0.8 likelihood that Test B will be positive, hence P(Test B Positive | Steroids Used) = 0.8

The likelihood that a sportsperson will use steroids is denoted by P. (Steroids Used).

The probability that an athlete will test positive for steroid use can be determined using the conditional probability formula, which is as follows: P(Test Positive | Steroids Used) = P(Test A Positive and Test B Positive | Steroids Used) = P(Test A Positive | Steroids Used) * P(Test B Positive | Steroids Used).

= 0.9 * 0.8 = 0.72

learn more about steroids  here:

https://brainly.com/question/13517647

#SPJ4

Answer:

The magnitude of the resultant force of the two forces (40 N and 30 N) at right angles is 50 N.

Explanation:

The resultant of two forces at right angles to each other is found by using the Pythagorean theorem. The Pythagorean theorem states that in a right triangle, the square of the hypotenuse (the longest side, opposite the right angle) is equal to the sum of the squares of the other two sides (the two shorter sides).

In this case, the two forces form the two shorter sides of the triangle and the resultant force is the hypotenuse.

So the magnitude of the resultant force can be calculated as:

√(40^2 + 30^2) = √(1600 + 900) = √2500 = 50 N

The magnitude of the resultant force of the two forces (40 N and 30 N) at right angles is 50 N.

The speed is unusual (65 [tex]\frac{mi}{h}[/tex] + 55[tex]\frac{mi}{h}[/tex] ), The two rates were not maintained keep up with the times.

The speed changed once a certain amount of time had passed. Speed = We get 65 = [tex]\frac{mi}{h}[/tex] = [tex]\frac{130 mi}{h}[/tex] by substituting variables, which is the formula for this = [tex]\frac{d}{t}[/tex]

In the interim, t1 has a value of 2.0 hours.

At lower speeds, the time is shown as t2 = T - t1 = 3.33 h — 2.0 h = 1.33 h.

The difference between the two speeds, such as speed = 73 miles, is also shown in this.

D is the sum of d1 and d2, which equals 203 miles.

The normal speed is = [tex]\frac{d}{t}[/tex] = [tex]\frac{203mi}{h}[/tex]= 61.

The two rates were not kept up with the times because of the unusual speed (65[tex]\frac{mi}{h}[/tex] + 55 [tex]\frac{mi}{h}[/tex]).

The direction in which a body or object is moving is determined by velocity.

Most of the time, velocity is a scalar number. In essence, velocity is a vector quantity. The term "velocity" refers to the rate of change in displacement and distance. speed is indicated by the speed and direction of travel (for instance, 60 kilometers per hour north).

Typically, velocity is defined as the vector value of the speed and motion direction. The speed at which something moves in one direction is known as velocity. Velocity can be used to measure both the speed of a car traveling north on a highway and the speed of a rocket taking off into space.

Learn more about velocity:

brainly.com/question/24445340

#SPJ1

Answer:

What is the first velocity of the car with one washer at the 0.25 meter mark?

1st  = 0.11 m/s

2nd = 0.13 m/s

3rd = 0.19 m/s

What is the second velocity of the car with one washer at the 0.50 meter mark?

1st = 0.28 m/s

2nd = 0.36 m/s

3rd = 0.45 m/s

Explanation:

trust

(a) The gravitational potential energy of the system is  [tex]\frac{GmM}{2R^3}r^2 - \frac{3GmM}{2R}[/tex] (Proved), and (b)  the amount of work done by the gravitational force in bringing the particle from the surface of the sphere to its center will [tex]-\frac{GMm}{2R}[/tex].

Assuming that a concentric spherical surface passes through where a particle of mass m resides.

so from that imaginary boundary

The mass of the inner part is

M' = [tex]\frac{M}{\frac{4\pi r^3}{3} } . \frac{4}{3} \pi r^3[/tex]= Mr³/r³

The potential at P due to this inner part is

V₁ = -GM'/r

or V₁ = -GMr²/R³

Now, to find the potential at P due to the outer part of the sphere, we will divide this by concentric shells.

so, dm =  [tex]\frac{M}{\frac{4\pi r^3}{3} } . \frac{4}{3} \pi x^2 dx[/tex] = 3Mx²dx/R³

by further solving,

[tex]-\frac{Gdm}{x} = -3\frac{GM}{R^3}xdx[/tex]

so by integrating,

V₂ = [tex]\int\limits^R_r -3\frac{GM}{R^3}xdx[/tex]

or V₂ = [tex]-\frac{3GM}{2R^3} (R^2-r^2)[/tex]

So, the total potential at P will be

V = V₁ + V₂ = -GMr²/R³  [tex]-\frac{3GM}{2R^3} (R^2-r^2)[/tex]

or V = [tex]-\frac{GM}{2R^3}(3R^2-r^2)[/tex]

and we know that potential energy U = mV = [tex]\frac{GmM}{2R^3}r^2 - \frac{3GmM}{2R}[/tex] {Hence Proved}

(b) we know that potential energy at the center is Uc = [tex]-\frac{3GmM}{2R}[/tex] {r=0}

At surface {r+R} Us = [tex]-\frac{GMm}{R}[/tex]

hence, work done W = Uc - Us = [tex]-\frac{GMm}{2R}[/tex]

Therefore, (a) The gravitational potential energy of the system is  [tex]\frac{GmM}{2R^3}r^2 - \frac{3GmM}{2R}[/tex] (Proved), and (b)  the amount of work done by the gravitational force in bringing the particle from the surface of the sphere to its center will be [tex]-\frac{GMm}{2R}[/tex].

To read more about potential energy:

https://brainly.com/question/19768887

#SPJ4

The complete question is:

a particle of uniform mass m is located inside a uniform solid sphere of radius r and mass m at a distance r from its center (a) sho that the gravitational potential energy of the system is U=GMmr^2 /2R^3 - 3GmM/2R ? (b) Write an expression for the amount of work done by the gravitational force in bringing the particle from the surface of the sphere to its center.

The stone will descend straight down for 0.5 seconds, increasing its speed from 5.5 m/s to 10.4 m/s.

Newton's second law of motion states that F = ma where ma is the object's mass and an is its acceleration.

You can also write the equation as:

F = m (v - u)/t

Ft =m (v-u)

mat = m (v-u)

at = v-u

t = v-u/a

Given the following parameters;

v = 10.4 m/s

u = 5.5 m/s

a = 9.8m/s²

Substitute the given parameters into the formula to have:

t = 10.4-5.5/9.8

t = 4.9/9.8

t = 0.5 sec

The stone's speed will therefore increase from 5.5 m/s to 10.4 m/s in 0.5 seconds as it drops directly to the ground.

To know about speed

https://brainly.com/question/7359669

#SPJ4

a) The spring constant is 896760 N/m.

b) F = -896760x

(a) To determine the spring constant, we need to find the slope of the linear portion of the graph. The slope can be found by dividing the change in force by the change in extension.

(b) Hooke's law states that the force applied to a spring is proportional to the spring's extension, with the constant of proportionality being the spring constant. So the equation for this spring would be:

F = kx

where F is the force, x is the extension, and k is the spring constant.

Therefore, the spring constant is 896760 N/m. It could then be concluded that the spring constant is as given above.

learn more about Hooke's law: https://brainly.com/question/2648431

#SPJ1

If one piece is placed above another, the repulsive force can be great enough to support the top piece's weight.

calculate the magnitude of the charge if electrostatic force?

To learn more about magnitude of the charge refers to:

https://brainly.com/question/25316833

#SPJ4

The angle of plane is 15 degrees.

mg x Sin A gives the force that pushes the mass down the incline.

Additionally, this force uses the same formula m x a which is mass times acceleration,

where a is the original acceleration in the plane.

The block sliding has a mass of 1.7 kg and an initial speed of 1.54 m/s.

the velocity is 6.13 m/s after the time of 1.70 seconds, which is given.

By dividing the difference between the two initial velocities by the given time, or

(6.13 m/s - 1.54 m/s) / 1.70s = 2.70 [tex]m/s^2[/tex],

the acceleration a may be calculated.

ma is therefore which is  equal to mass time acceleration g times sin A, or

sin A = acceleration (a)  / gravity (g) , or

 2.70 [tex]m/s^2[/tex] times 9.81  times 0.275.

A is equal to arc sin (0.275) = or sin A  = 15 degrees

To learn more about Angle of plane :

https://brainly.com/question/14703248

#SPJ4

At upper temperatures, the thermal conductivity decreases slowly with increasing temperature than depicted by this equation. Aluminum  has the higher temperature change.

to learn more about Aluminum   from the given link:

https://brainly.com/question/9496279

#SPJ1

The initial horizontal speed of the proton is 0.16 m/s.

The time of motion of the proton is calculated by applying the following kinematic equation.

t = √ ( 2gh )

where;

t = √ ( 2 x 9.8 x 0.01 )

t = 0.44 second

The initial horizontal speed of the proton is calculated as;

d = Vₓt

Vₓ = d / t

Vₓ = ( 0.07 m ) / ( 0.44 s )

Vₓ = 0.16 m/s

Learn more about proton's initial speed here: https://brainly.com/question/13111036

#SPJ1

Answer:

Accuracy refers to how close a measurement is to the true or accepted value. Precision refers to how close measurements of the same item are to each other. Precision is independent of accuracy.

Answer:

Accuracy refers to how close a measurement is to the true or accepted value. Precision refers to how close measurements of the same item are to each other.

Explanation:

Precision is independent of accuracy.

Infants extracting an increasing number of potential word forms from the speech stream they hear, begin to associate these with concrete, perceptually available objects is referred to as statistical learning.

Statistical learning refers to the process by which infants extract potential word forms from the speech stream they hear and begin to associate them with concrete, perceptually available objects. This process is thought to be a crucial component of language development, as it allows infants to begin to understand the structure and meaning of the language they are exposed to.

Through statistical learning, infants are able to identify patterns and regularities in the speech they hear, such as the relationship between a word and the object it refers to. This ability enables them to begin to build a vocabulary and develop an understanding of the grammar and syntax of their native language. Additionally, statistical learning may also play a role in the development of other cognitive abilities, such as memory and attention.

To learn more about statistical learning visit: https://brainly.com/question/13405479

#SPJ4

Your question seems incomplete, but I suppose the question was:

"As infants extract an increasing number of potential word forms from the speech stream they hear, they begin to associate these with concrete, perceptually available objects in their world. this is referred to as"