Knowing that the allowable normal stress for the steel used is 160 MPa, select the most economical S-shape beam to support the loading shown.

It's a little unclear what you mean by "the top half" and "the bottom half" of the Vernier caliper.

However, assuming you are referring to the main scale and the Vernier scale, respectively, here is how you can read the caliper:

Read the main scale: Look at the scale on the top half of the caliper and identify the whole number before the decimal point. In this case, it should be 13 (i.e., one inch plus three tenths of an inch).

Read the Vernier scale: Look at the scale on the bottom half of the caliper and find the line that lines up with a line on the main scale. The number corresponding to this line on the Vernier scale is the fraction of an inch you need to add to the main scale reading. In this case, it seems like the Vernier scale has 10 divisions that span the same distance as 9 divisions on the main scale, which gives a Vernier constant of 0.1 inch / 9 = 0.011111 inch. Assuming the zero line on the Vernier scale lines up with a line on the main scale, the line on the Vernier scale that lines up with another line on the main scale should be the one that is 0.1 inch minus 0.3 inch = -0.2 inch away from the zero line. However, since the Vernier constant is 0.011111 inch, this line should be the 18th line on the Vernier scale (counting from the left). Therefore, the fraction of an inch to add to the main scale reading is 0.018 inch (i.e., 18 divisions times the Vernier constant).

Putting these together, the reading on the Vernier caliper should be 13.018 inches.

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A brick is dragged across a concrete floor. The type of friction that acts between the brick and the floor is Static friction.

Friction is a force that opposes the relative motion of two objects that are in contact. It is the resistive force that acts in the opposite direction of the relative motion between two objects. Friction is a non-conservative force, meaning that the total work done by friction is not conserved. Friction is caused by the roughness of the surfaces of the two objects in contact. The amount of friction between two objects depends on the materials of the two objects, the force with which they are pressed together, and the area of contact between them. Friction can be beneficial and can be used to slow down motion, or it can be detrimental and cause objects to become stuck together.

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Answer:

speed/time

Explanation:

Answer:

a= (Vf - Vi)

         t

To find acceleration (a) you need to subtract the finale velocity (Vf) minus the initial velocity (vi) divided by time (t) as shown in the equation above.

Unit Level means assembling the individual components of a tennis ball, such as the felt and rubber pieces. Batch Level indicates testing a batch of tennis balls for quality control.

1. Receiving felt shipments - Batch Level: Receiving shipments of felt is a batch-level activity because it involves specific batches of felt that are associated with a particular production run.

2. Cutting felt - Unit Level: Cutting felt is a unit-level activity because it involves cutting individual pieces of felt for use in the production process.

3. Forming rubber cores - Unit Level: Forming rubber cores is a unit-level activity because it involves creating individual pieces of rubber for use in the production process.

4. Reducing electricity usage - Facility Level: Reducing electricity usage is a facility-level activity because it involves the entire facility, not just the production of tennis balls.

5. Calibrating machines - Facility Level: Calibrating machines is a facility-level activity because it involves ensuring that all of the machines in the facility are operating correctly and efficiently.

6. Planning production - Facility Level: Planning production is a facility-level activity because it involves determining how the facility will operate in order to meet production goals.

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complete question: Classify each of the following activities as unit level, batch level, product level, or facility level for a manufacturer of tennis balls. Activity level: 1. Receiving felt shipments 2. Cutting felt 3. Forming rubber cores 4. Reducing electricity usage 5. Calibrating machines 6. Planning production.

The volume of the rock is 381 cm3. To find the volume of the rock, we need to use Archimedes' principle, which states that the buoyant force on an object is equal to the weight of the water displaced by the object.

First, we need to find the weight of water displaced by the rock. We can do this by subtracting the apparent weight of the rock in water from its weight in air:

1378 N - 997 N = 381 N

This means that the rock displaces 381 N of water.

Next, we need to convert this to volume. We know that 1 N of force displaces 1 cm3 of water, so:

381 N = 381 cm3

Therefore, the volume of the rock is 381 cm3.

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The torque developed by the motor is 0.353 Nm.

We can start by finding the power output of the motor using the energy consumption and time interval

Power output = Energy consumed / Time interval = 10.0 kJ / 60 s = 166.7 W

Since one-third of this energy goes into heat and other forms of internal energy, the remaining power output that goes into mechanical work is

Power output (mechanical) = 2/3 x Power output (total) = 2/3 x 166.7 W = 111.1 W

Next, we can use the equation for the power output of a motor in terms of torque (T) and angular velocity (ω)

Power output (mechanical) = T x ω

We are given the angular velocity as 3000 rpm, which we can convert to radians per second

ω = 3000 rpm x (2π rad/1 rev) x (1 min/60 s) = 314.16 rad/s

Solving for the torque, we get

T = Power output (mechanical) / ω = 111.1 W / 314.16 rad/s ≈ 0.353 N·m

Therefore, the motor will develop a torque of approximately 0.353 N·m when run at 3000 rpm.

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--The given question is incomplete, the complete question is given

" An electric motor consumes 10.0kJ of electrical energy in 1.00min .

1.If one-third of this energy goes into heat and other forms of internal energy of the motor, with the rest going to the motor output, how much torque will this engine develop if you run it at 3000rpm ?"--

Answer:

no

Explanation:

because it will bind together in the molecular level

The magnitude of force put out by the machine is of 3600 N.

What is Mechanical Advantage?

The mechanical advantage of a machine is defined as the force amplification of a machine by using certain mechanical devices.

Given data -

The value of the mechanical advantage is, MA = 4.5.

The magnitude of applied force is, F = 800 N.

Mathematically, the mechanical advantage is defined as the ratio of output force to the applied or input force. That is,

ME = F'/F

here,

F' is the output force.

Solving as,

4.5 = F'/800

F' = 4.5 × 800

F' = 3600 N

Thus, we can conclude that the magnitude of force put out by the machine is of 3600 N.

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The best definition for heat transfer by radiation is: "Transfer of energy by the wave-like emission from the surfaces of all substances."

Radiation refers to the process by which heat is transferred through electromagnetic waves, such as infrared radiation, without the need for any physical medium or direct contact between objects. It is a form of energy transfer that can occur through empty space or transparent media. Depending on the energy of the emitted particles, radiation is frequently divided into ionising and non-ionizing categories. More than 10 eV is carried by ionising radiation, which is sufficient to ionise atoms and molecules and rupture chemical bonds. Due to the significant differences in how toxic these substances are to living things, this distinction is crucial.

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where ℏ is the reduced Planck's constant and ω is the angular. where E0 represents the zero-point energy.

frequency. a) The energy of the elastic mode with angular frequency Fme is given by:

E = ½ ℏ ω

where ℏ is the reduced Planck's constant and ω is the angular frequency.

b) The zero-point energy of the above elastic mode, described by the equation F.x = e(us. MSL), is given by:

E0 = ½ ℏ ω

where E0 represents the zero-point energy.

d) The selection rule for phonon-phonon interaction is determined by the conservation of momentum. It can be written as:

Δq = G

where Δq is the change in the wavevector and G is a reciprocal lattice vector.

e) The selection rules for x-ray diffraction (elastic scattering) are determined by the symmetry of the crystal lattice. Generally, the selection rules are:

Δl = 0 (change in azimuthal quantum number)

Δm = 0 (change in magnetic quantum number)

where l and m are the quantum numbers associated with the initial and final states of the diffraction process.

f) The selection rule for neutron scattering depends on the nature of the scattering interaction. Neutrons can scatter off the nucleus (coherent scattering) or off the magnetic moment associated with the nucleus (magnetic scattering). The selection rule for coherent neutron scattering is:

Δm = 0 (change in magnetic quantum number)

(a) Write down the energy of the elastic mode of angular frequency : Fme. (MEALMS.)..... ************* b) Write down the zero point energy of the above elastic mode: F.x=.e(us. MSL.)... c) Draw the wave shape of a linear ionic lattice when it vibrates in both acousticand and optical modes: Acoustical.. 2² us... ..... ........EX.. e. Cust! -us) e(us.-) ·e.(Ms+.+. Ms.nl.m.2. Ms.). )....... Optical.. d) Write down the selection rule for the Phonon-phonon interaction: S... ARXA...theamit.)..... dus. Ae.xeil Saar.wb.). (n. 1.).. d **25 us .... iz w2 Aexp (SRA - wb w² A exp (seA-WE):" Write down the selection rules for the x-ray diffraction (Elastic scattering): the caushion meme of the abom sisi...... 1² us *** Fetusst-4c)-e (us € 8 (MSA). 4.91.25.).. **** f) Write down the selection rule for the neutron scattering: ************* ******** *************)

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Explanation:

At first it is in 14m position but position doesn't matter in displacement, similar case for time taken.

So at first it travels 6m in positive direction.

So displacement= 6m

Then it travels 13 in opposite or negative direction.

So displacement = 6 -13 m = -7 m

Hope it helps ya

You're standing in the lobby of a huge building.

You go up 6 floors.

You stop and catch your breath.

You go down 13 floors.

Where do you end up ?

The negative plate is the one facing us because the electric field between the plates is zero, which can only happen if the two plates have the same magnitude and opposite sign of charge density.

Charge density is the amount of electric charge per unit area or per unit volume of a material or object. It is usually denoted by the symbol ρ and is measured in units of coulombs per square meter (C/m²) or coulombs per cubic meter (C/m³).

In the case of a charged plate, the charge density is the total charge on the plate divided by its surface area. For example, if a plate has a charge of 60 µC and an area of 2 m², then the charge density is:

Charge density = 60 µC / 2 m² = 30 µC/m²

Charge density is an important concept in electrostatics, as it is used to describe the distribution of electric charge over a surface or within a volume. It is also used in the calculation of electric fields and forces in electrostatics, as the electric field depends on the charge density of the objects producing the field.

Two large, charged plates with charge density ±30µC/m² facing each other with a separation of 5.0 mm.

One of the plates has a negative charge density.

We want to find out which plate is negative

1. Calculate the total charge on one of the plates using the charge density and the area of the plate:

Q = ±30 µC/m² * A

Here, A is the area of one of the plates.

2. Calculate the electric field due to each plate using Coulomb's law:

E = (1/4πε₀) * (Q / r²)

Here, r is the distance between the plates, which is 5.0 mm or 0.005 m.

ε₀ is the permittivity of free space, which is a constant and has a value of 8.85 x 10⁻¹² F/m.

Since there are two plates, calculate the electric field due to each plate and then take the difference between them to get the net electric field between the plates.

3. Substitute the values and calculate the electric field due to each plate:

E1 = (1/4πε₀) * (Q / r²)

E2 = (1/4πε₀) * (Q / r²)

Here, E1 is the electric field due to one plate, and E2 is the electric field due to the other plate. Since the plates have the same magnitude of charge density, their charges will have the same magnitude too, so we can drop the absolute value sign in Coulomb's law.

4. Subtract the electric field due to one plate from the electric field due to the other plate to get the net electric field:

E = E1 - E2

E = 0

Since, the net electric field is zero, this means that the electric field due to one plate is equal in magnitude and opposite in direction to the electric field due to the other plate. Therefore, the plates must have the same magnitude of charge and opposite signs of charge density.

5. Since, one of the plates has a negative charge density is known, this means that the negative plate is the one facing us. Therefore, the negative plate is the one that we were asked to identify.

Therefore, the negative plate is the one facing us.

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Answer:

Explanation:

What is the value of a in the function's equation?

A. -2

B. -3

C. 3

D. 2

ANSWER: c.

Answer:

1.45 N

Explanation:

Newton's Second Law: F=ma

Convert 145 grams to kilograms

0.145kg*10m/s^2

1.45 N

The time it takes the object to fall through the change in speed using the impulse-momentum theorem is 0.62 seconds.

The impulse-momentum theorem states that the change in momentum of an object is equal to the impulse exerted on it.

To calculate the time it takes the object to increase it speed using the  impulse-momentum theorem, we use the formula below.

Formula:

Recall that F/m = acceleration. Therefore,

Where:

From the question,

Given:

Substitute these values into equation 1 and solve for t

Hence, the time it takes the object to fall is 0.62 seconds.

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Answer:

a unit of mass or weight equaling one thousand grams

Answer:

Weight (Force) = mass x acceleration due to gravity Weight = 90.0 kg x 9.80 m/s2 Weight = 882 N or 882 kg m/s2 Page 2 Newton's Notes 2 Gravity has an effect on an object in the vertical direction only.

Answer:

882.9N

Explanation:

1kg is 9.81n

A lens with a longer focal length will have a narrower angle of view, while a lens with a shorter focal length will have a wider angle of view. The focal length of a lens also affects the magnification and focus of the subject in an image.

Focal length is the distance between the optical centre of a lens and the image sensor of a camera. It can be measured in millimetres and is used to determine the angle of view of the lens.

A) The focal length of the second lens can be calculated using the lens equation: 1/f2 = 1/f1 + 1/d, where f1 is the focal length of the first lens (10 cm), d is the distance between the two lenses (10 cm), and f2 is the focal length of the second lens.

(b) The formula M = -d2/d1 can be used to compute the system's overall magnification.

Where d1 is the object's (15 cm) distance from the first lens and d2 is the image's (0 cm). M = 3 is obtained by solving for M. (c) The finished picture is accurate, erect, and enlarged.

Therefore, Solving for f2 gives \(f_2 = 5 cm.\)

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Answer: mmm... If you mean most like Basketball it's net ball but i don't know much about Basket ball teams

Explanation:

If normal range of motion of the shoulder is not possible and the attempt causes the shoulder to shrug or hike, the injury is likely a rotator cuff tear.

When the normal range of motion of the shoulder is restricted, and attempting to move the shoulder causes it to shrug or hike, it is indicative of a potential rotator cuff tear.

The rotator cuff is a group of muscles and tendons that surround the shoulder joint, providing stability and facilitating movement. It helps to keep the head of the upper arm bone (humerus) securely within the shoulder socket.

A rotator cuff tear can occur due to various reasons, such as trauma, repetitive motion, or degeneration with age. When a tear occurs, it can lead to pain, weakness, and limited range of motion in the shoulder.

The inability to move the shoulder through its normal range without causing shoulder shrugging or hiking suggests that the rotator cuff's integrity is compromised.

It is important to consult a healthcare professional for a proper diagnosis and appropriate treatment of a suspected rotator cuff tear. Treatment options may include rest, physical therapy, medication, or in severe cases, surgical intervention.

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The speed of the particle after 10 seconds is, 25.88m/s.

To find the answer, we have to know more about the equations of motion.

                          \(m=16kg\\u=10m/s\\t=10s\\f=25N\)

                        \(ma=f\\a=\frac{f}{m} =\frac{25}{16}=1.6m/s^2\)

           \(S=ut+\frac{1}{2}at^2=(10*10)+(\frac{1.6*10^2}{2})=178.13m\)

                \(v=\sqrt{u^2+2aS} =\sqrt{10^2+(2*1.6*178.13)} =25.88m/s\)

Thus, we can conclude that, the speed of the particle after 10 seconds is, 25.88m/s.

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Along the floor of the Atlantic Ocean, from north to south, is a vast rift valley known as the Mid-Atlantic Ridge. The separating plates and tectonic forces that created it. B. The longest mountain chain in the world.

When electromagnetic energy fields or light are present, their energy or power can be measured by radiometry. Although many street lamps, including CW lasers & LEDs, emit output power that is consistent throughout time, the average terminal voltage is the most popular radiometric measurement.

The art and science of measuring and calculating the fundamental characteristics of electromagnetic radiation is known as radiometry. In addition to radio waves and X-rays, this also contains visible light, infrared light, ultraviolet light, and infrared light.

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Answer:

Sonic boom.

When something breaks the sound barrier. (Moves faster than sound, like lighting)

Explanation:

Try flying a plane.

The maximum ratio of tensile forces is 1.3.

To find the maximum ratio of tensile forces in the two rope ends, we need to consider the equilibrium condition of the system.

Let's denote the tension in the rope attached to the fixed load as T_load and the tension in the other end of the rope as T_force. The maximum ratio of these tensions occurs when the system is on the verge of motion or just about to move.

Considering the forces acting on the system, we have the following:

1. T_load: The tension in the rope due to the fixed load, acting downward.

2. T_force: The tension in the other end of the rope, acting upward.

3. F_friction: The frictional force acting between the rope and the sheave, opposing the motion.

Since the system is in equilibrium, the sum of the forces in the vertical direction should be zero:

T_load - T_force - F_friction = 0

The frictional force can be calculated using the equation:

F_friction = μ * N

where μ is the coefficient of friction between the rope and the sheave, and N is the normal force acting on the rope due to the sheave.

In this case, the normal force N is equal to T_force, as the rope is passing over the sheave without any vertical displacement.

Substituting the value of F_friction into the equilibrium equation:

T_load - T_force - μ * T_force = 0

Rearranging the equation:

T_load = (1 + μ) * T_force

Therefore, the maximum ratio of tensile forces in the two rope ends is given by:

T_load / T_force = (1 + μ)

Substituting the given coefficient of friction (μ = 0.30):

T_load / T_force = (1 + 0.30)=1.30

The maximum ratio of tensile forces=1.30

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Answer:

In mathematics, the difference of two squares is a squared (multiplied by itself) number subtracted from another squared number. Every difference of squares may be factored according to the identity. in elementary algebra.

Explanation:

Answer:

A force of 355 N is applied to an object that accelerates at a rate of 7.8 m/sec2 . What is the mass of the object ?

Explanation:

The torque produced by the motor is approximately 706 Nm. The motor mentioned in the question is an electrical device that converts electrical energy into mechanical energy.

To calculate the torque produced by the motor, we need to use the formula:

Torque = Magnetic Field Strength × Current × Area × Number of Windings

Given:

Magnetic field strength (B) = 50 Tesla

Number of windings (N) = 500

Diameter of the rotating core (d) = 30 cm = 0.3 m

Length of the rotating core (L) = 0.6 m

Resistance of the wire (R) = 30 ohms

Voltage applied (V) = 12 volts

First, let's calculate the current (I) flowing through the wire using Ohm's Law:

I = V / R

I = 12 V / 30 Ω

I = 0.4 Amperes

Next, let's calculate the area (A) of the rotating core:

A = πr^2

= π(d/2)^2

= π(0.3/2)^2

= π(0.15)^2

≈ 0.0707 square meters

Now, we can calculate the torque (T) produced by the motor:

T = B × I × A × N

T = 50 T × 0.4 A × 0.0707 m^2 × 500

T ≈ 706 Newton-meters (Nm)

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Visible radiations are the electromagnetic radiation wavelength which is efficiently observed using ground based telescopes.

The electromagnetic waves we can for the most part see on the ground comprise of apparent light, which is challenging for the air to retain, close infrared beams, and a few electromagnetic waves. These frequency ranges are called air windows.

Noticeable light is a sort of electromagnetic radiation, which is sent in waves or particles at various frequencies and frequencies. This wide scope of frequencies is known as the electromagnetic range. That range is commonly separated into seven districts arranged by diminishing frequency and expanding energy and frequency.

A commonplace natural eye will answer frequencies from around 380 to around 750 nanometers. As far as recurrence, this compares to a band nearby 400-790 terahertz. These limits are not pointedly characterized and may differ per person. Under ideal circumstances these restrictions of human insight can stretch out to 310 nm (bright) and 1100 nm (close to infrared).

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Answer:

D.

Explanation:

Weight is determined using the formula \(w=mg\) (m=mass, w-weight, g=gravity​). In physics, weight is the force that gravitation exerts upon a body, equal to the mass of the body times the local acceleration of gravity.

One question I still have about space is whether there is other intelligent life out there.

While the search for extraterrestrial intelligence has been ongoing for decades, we have yet to find any conclusive evidence of other intelligent beings beyond Earth. In order to answer this question, we would need to search much further and on a much larger scale than we currently are. We would need to explore more distant galaxies and use more advanced technology to detect any signs of life.

Even if we were able to find evidence of life elsewhere, we would still need to determine whether it was intelligent and whether it was capable of communicating with us. This is a complex and ongoing search that requires a great deal of time, effort, and resources. However, the potential discovery of other intelligent life beyond our planet would have significant implications for our understanding of the universe and our place within it.

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