Correctly identify the following formed elements. eBook Lymphocyte Neutrophil Eosinophil Platelets Monocyte Basophil Prev 1 of 17 Next >

Answers

Answer 1

Granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes are different kinds of white blood cells (T cells and B cells). Histamine is released by basophils to elicit an all-purpose immune response.

While battling germs and parasites, eosinophils can also cause allergic symptoms. B and T cells that function as lymphocytes protect the body from particular invaders. Monocytes remove dead cells from the body. Granulocytes, lymphocytes, and monocytes are the three primary types of white blood cells according to medical experts. All of the body's components receive nutrition and oxygen so they can continue to function. The lungs, kidneys, and digestive system use the blood to transport carbon dioxide and other waste products to be expelled from the body. Additionally, blood transports hormones throughout the body and fights infections.

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Related Questions

You are riding in the car with your grandfather, and he turns left. Why do you shift to the right?

Answers

Answer: Because physics makes us go to the right

Explanation:

When a nucleus of ^235 U undergoes fission, it breaks into two smaller, more tightly bound fragments.
Â

1) Calculate the binding energy per nucleon for ^235U? (Express with appropriate units)Â

2) Calculate the binding energy per nucleon for the fission product ^137 Cs? (Express in appropriate units)

Answers

The binding energy per nucleon of 235-U and 137-Cs is given below:

235-U = 7.6 MeV137-Cs = 8.39 MeV

What is the binding energy per nucleon of 235-U and 137-Cs?

The binding energy of a nucleus is given by the following equation:

BE = Δmc²

where;

BE is binding energy

Δm is mass defect

c is the speed of light = 931.49 MeV/u

For 235U:

A = 235

Δm  = 1.9150664

BE = 1.9150664  * 931.49 MeV/u

BE = 1783.8648 MeV

The binding energy per nucleon is given by the formula; BE/A

BE/A =  1738.648 MeV / 235

BE/A = 7.6 MeV

For 137-Cs, binding energy will be:

Δm is mass defect = 1.23383 u

BE = 1.23383 u * 31.49 MeV/u = 1149.3003 MeV

And, the binding energy per nucleon, BE/A will be:

And, since in the case of 137-Cs, A is 137;

BE/A = 1149.3003 MeV / 137

BE/A = 8.39 MeV

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a sled is sliding down a snowy hill at constant velocity. the hill makes an angle of 12o with respect to the horizontal. what is the coefficient of kinetic friction between the hill and the sled?

Answers

The sled slows down and eventually stops as a result of the kinetic frictional force that the snow imparts on its runners. The kinetic friction coefficient is 0.050.

What is the sled's coefficient of friction with the frozen ground?

The girl and sled together weigh 755 N, with a kinetic friction coefficient of 0.047 between the runners of the sled and the hard, ice snow. 9.81 m per s2 is the acceleration of gravity.

How are sled calculations made?

The system determines the SLED as follows if the total shelf life is supplied in the material master record: SLED equals the whole shelf life plus the manufacture date from the GR document.

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Identify the muscles whose tendons contribute to the calcaneal tendon. 47 Gastrocnemius points (8 00:50:40 Plantaris Tibialis posterior Soleus Popliteus

Answers

The plantaris works by flexing the knee and ankle joints sporadically. about the foot's position, the central nervous system.

What results in Plantaris pain?

There are numerous ways in which the plantaris tendon might hurt. First, when the plantaris tendon is overworked or overloaded, it might experience tendonitis or tendinopathy. Second, it's hypothesized that the plantaris can chafe and compress on the Achilles tendon, injuring it.

What purpose does the plantaris serve?

Function. The plantaris functions to plantar flex the knee joint and ankle joint sporadically. The central nervous system may receive proprioceptive feedback information about the location of the foot from the plantaris muscle.

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a student holds a laser that emits light of wavelength 633.0 nm. the laser beam passes though a pair of slits separated by 0.200 mm, in a glass plate attached to the front of the laser. the beam then falls perpendicularly on a screen, creating an interference pattern on it. the student begins to walk directly toward the screen at 3.00 m/s. the central maximum on the screen is stationary. find the speed of the 50th-order maxima on the screen.

Answers

Speed of the 50th-order maxima on the screen = 0.480 m/s

Given in the question,

Wavelength = 633.0 nm

Dimension of slits = 0.200 mm

Speed of students walking toward the screen = 3.00 m/s

The angle of 50th order fringe =

⇒ d sinθ = mλ

⇒ θ = [tex]sin^{-1}[/tex]( 50λ / d)

The distance x from the slit to the screen and the distance y of the 50th-order fringe from the central maximum is related by tan θ,

tan θ = [tex]\frac{y}{x}[/tex]

As the student comes closer to the screen at speed v, the distances between x and y decrease but their ratio stays the same.

tan θ =[tex]\frac{y}{x}[/tex]

y = x tan θ

[tex]\frac{dy}{dt}[/tex] = [tex]\frac{dx}{dt}[/tex]tan θ

Since [tex]\frac{dx}{dt}[/tex] represents a change in speed so we could assume,

[tex]\frac{dx}{dt}[/tex] = v

[tex]\frac{dy}{dt}[/tex] = -v tan θ

As we can see in the question that the distance is decreasing so the change in distance will also decrease hence = [tex]\frac{dy}{dt}[/tex] will be negative.

[tex]v_{50th-order}[/tex] = |[tex]\frac{dy}{dt}[/tex]| = vtanθ

= vtan[ [tex]sin^{-1}[/tex] (mλ / d) ]

By using this formula we will find the speed of the 50th-order fringe,

[tex]v_{50th-order}[/tex] = (3.00m/s)tan { [tex]sin^{-1}[/tex] [ [tex]\frac{50(633.0 * 10^{-9}m) }{0.200 * 10^{-3} }[/tex] ] }

[tex]v_{50th-order}[/tex] = (3.00 m/s) tan (9.1053)

[tex]v_{50th-order}[/tex] = 3.00 x 0.160

[tex]v_{50th-order}[/tex] = 0.480 m/s

Therefore, speed of the 50th-order maxima on the screen = 0.480 m/s

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a 1000 n crate is lifted to a height of 3.0 m . how much work is done to lift the crate?

Answers

The work done by the crate to raise the barrel was found t be about  3000J.

How to calculate work done?

Work is a measure of the energy it takes to move an object; most often force times distance.

It is said that "things that don't move have no merit". Work done can be calculated by multiplying the force by the distance traveled as follows:

Work done = Force × distance

According to this question, a box of 1000N is raised to a height of 3.0m. The work done on the barrel is calculated as follows

W = 1000x3 = 3000J

so the work done for lifting the crate was found to be 3000J

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how much heat transfer (in j) occurs from a system if its internal energy decreased by 200 j while it was doing 44.0 j of work? (enter the magnitude.)

Answers

Heat transfer (in j) occurs from a system Q = - 156 J.

Briefly:-

We use thermodynamics principles in this situation. There are already obtained relationships for intense properties like internal energy (U), heat transfer (Q), and work (W) that were based on differential equations. The formula is

ΔU = Q + W

But since these factors depend on their signs, we must remember to take them into account. Van Ness, Smith, and Abbott assert that declining has a negative sign convention. If work is being done ON the system, the sign is positive; however, if work is being done BY the system, the sign is negative. in this instance,

ΔU = - 200 J\sW = - 44 J

In that case, Q can be found.

-200 J = Q - 44 J

heat transfer (in j) occurs from a system Q = - 156 J.

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why are electrical insulators important? they help the flow of electricity they provide power for electric circuits they are used to protect us from electricity they help conduct heat they are not important

Answers

Electrical insulators are important because they are used to protect us from electricity.

Why are we use Electrical insulator?As they don't carry electricity, insulators are used in circuits to insulate wire, switches, plugs, and other electrical components. So that circuit may be made safe to touch and shock-free.An insulator prevents electricity from moving. Insulators are crucial for protecting humans from electricity. A rubber-like insulator covers the wire carrying electricity to your computer or television to prevent you from being electrocuted. Glass, the air, and paper are all effective insulators.Electrical equipment uses insulators to hold and separate electrical conductors without allowing current to flow through them. Insulation is an insulating substance that is wrapped in large quantities over electrical lines or other equipment.

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Three identical lamps are connected in series to each other and to a voltage source. If another identical lamp is added in series connection (all four connected in series), what happens to the brightness of the first three lamps? O Increases O Decreases O Stays the same O Not enough information Which of the following will decrease the capacitance between the plates of a parallel plate capacitor filled with air? I. Decrease the charge on the plates II. Increase the potential difference between the plates III. Increase the separation between the plates IV. Decrease the area of the plates
V. Introduce a dielectric material between the plates O all of them O I, II and IV III O III and IV O III, IV, V

Answers

1. decreases

as the bulb is connected in series, the current when passing through all the bulb is increasing and the voltage is divided and decreased.

we can say that the net voltage will be divided equally between all 4 bulbs because of equal current and resistance.

2. ii) Increase the potential difference between the plates

iii) Increase the separation between the plates

capacitance is inversely proportional to the distance between the plates

capacitance is directly proportional to potential difference

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If we are severely dehydrated we expect Select one:
a. ADH levels to increase resulting in producing more dilute urine
b. ADH levels to increase resulting in producing more concentrated urine
c. ADH levels to decrease resulting in producing more dilute urine
d. ADH levels to decrease resulting in producing more concentrated urine

Low blood pressure will result in the following levels of hormones Select one:
a. High Renin;high ADH; low aldosterone
b. High Renin; low ADH; low
c. Low Renin;low ADH;low Alsosterone
d ADH:high Aldosterone High Renin high

Oxylate is Select one:
a. Usually associated with uric acid stones
b. Commonly found in foods like spinach
c. Used in the formation of many calcium kidney stone
d. Both a and b e. Both b and c

Answers

If we are severely dehydrated, ADH levels increases resulting in more concentrated urine.

Low BP means low GFR produced so Renin is increased, high ADH and high aldosterone.

Oxylate used in formation of calcium stones in kidney.

What is ADH?

ADH is also called arginine vasopressin. A hormone produced in the hypothalamus of the brain and stored in the posterior lobe of the pituitary gland. It tells your kidneys how much water to save.

ADH constantly regulates and balances the amount of water in the blood. Higher concentrations of water increase blood volume and pressure. Osmotic sensors and baroreceptors work in concert with ADH to maintain hydrogen metabolism.

Osmotic sensors in the hypothalamus respond to the concentration of particles in the blood. These particles include sodium, potassium, chloride and carbon dioxide molecules. When particle levels are out of balance or blood pressure is too low, these sensors and baroreceptors direct the kidneys to store or release water to maintain a healthy spectrum of these substances. . It also regulates the body's thirst.

Therefore, If we are severely dehydrated, ADH levels increases resulting in more concentrated urine.

Low BP means low GFR produced so Renin is increased, high ADH and high aldosterone.

Oxylate used in formation of calcium stones in kidney.

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you attach a block to the bottom end of a spring hanging vertically. you slowly let the block move down and find that it hangs at rest with the spring stretched by 13.0 cm. next, you lift the block back up and release it from rest with the spring unstretched. what maximum distance does it move down? 6.5 cm 13.0 cm 26.0 cm 52.0 cm the distance cannot be determined without knowing the mass and spring constan

Answers

Maximum distance that it moves down is 26 cm, when block hangs at rest with the spring stretched by 13.0 cm.

How to calculate the change in spring length?

In the formula, F = -k x :  k is called the spring constant and is a measure of the spring's stiffness. When a spring is stretched or compressed,  its length changes by an amount x from  equilibrium length, and then it exerts a force F = -kx in a direction towards the equilibrium position.

Given that the equilibrium position is 13 cm below the starting point. As motion is symmetric about the equilibrium position, so the two turning points are 26 cm apart.

13 *2 = 26cm

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The direction of the force of sliding friction is always select one to that of velocity of the object and is select one static friction. True or False?

Answers

The direction of the force is sliding friction is always select one to that velocity of the object and is Select one Statics friction this statement is false.

What is friction?

Friction is the force resisting to the relative motion of the  solid surfaces, fluid layers, and material elements and the  sliding against each  other. There are some several types of friction: Dry friction is a force and that opposes the relative lateral and the  motion of two solid surfaces in contact.

Frictional force offers to the resistance to the applied by the  force opposing it is the  motion. Thus, it always acts like it is  in the direction of the  opposite to that of the object in the motion

So it will not be in direction  of the motion

And static friction also work  as the opposite direction of the  motion .

Thus, it is false.

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two 1.50 v batteries -- with their positive terminals in the same direction -- are inserted in series into the barrel of a flashlight. one battery has an internal resistance of 0.350 , the other an internal resistance of 0.110 . when the switch is closed, a current of 600 ma occurs in the lamp. (b) what fraction of the chemical energy transformed appears as internal energy in the batteries?

Answers

In the series of a flashlight's barrel, the fraction of the chemical energy transformed appears as internal energy in the batteries as 0.460.

b) the expression for the total emf for the given circuit is

E = nV

E = total emf for the circuit

n = number of batteries

V = voltage across the batteries

Substitute 2 for n, 1.50V for V in the above equation to find E

E = 2 x 1.500V

= 3.0V

Total emf = 3.0V

By using the formula to calculate total internal resistance for the circuit

r = r1+r2

r = total circuit's resistance

r1 = one battery's internal resistance

r2 = internal resistance of other battery

Substitute 0.350 for r1 and 0.110 for r2 in the above formula then,

r = 0.350+0.110

= 0.460

Hence, the total internal resistance for the circuit is 0.408

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what is the frequency of an electromagnetic wave that has the same wavelength as a 1.9 khz sound wave in water? express your answer with the appropriate units.

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The wavelength of the electromagnetic wave is 1.58 * 10⁵m. Electromagnetic radiation is made up of electromagnetic field waves that travel through space carrying electromagnetic radiant energy.

Because of their diverse origins and effects on matter, electromagnetic waves of varying frequencies are given different names. Microwaves, radio waves, visible light, ultraviolet radiation, infrared radiation, X-rays, and gamma rays are in the order of increasing frequency and decreasing wavelength.

The relation between the wavelength, frequency, and speed is as follows:

ν = λf

Here, the speed of the electromagnetic wave is ν

Rearrange the above expression to get λ

λ = ν / f

The speed of electromagnetic waves in a vacuum is 3 * 10⁸ m/s.

Substitute 1.9kHz for f and 3 * 10⁸ m/s for ν in the above expression.

λ = ν / f

λ = ( 3 * 10⁸ m/s) / 1.9kHz

λ = ( 3 * 10⁸ m/s) / 1.9kHz (10³ Hz/ 1kHz)

λ = 157894 m

λ = 1.58 * 10⁵m

Thus, the wavelength of the electromagnetic wave is 1.58 * 10⁵m.

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As a wave links of electromagnetic waves increase the frequencies ____ for waves moving in a ____

Answers

your question seems incomplete, I think you are asking the question which is given below.

Question: As the frequency of electromagnetic waves increases, what happens to the wavelength?

when the frequency of an electromagnetic wave increases, its wavelength would decrease, according to eq (i).

speed of light = frequency X wavelength ............(i)

as the speed of light is constant in the same medium.

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Label the blood vessels using the hints provided. Pterygoid plexus of v Middle meningeal Superficial temporal Maxillary v Facial v Posterior auricular V Reset Zoom

Answers

The labeling of blood vessels shown below:

What is blood vessels?

Arterioles are the incredibly small branches of arteries, the blood channels that convey blood out from the heart. Venules, which are incredibly tiny branches that gather blood from numerous organs and body parts, join to create veins, which carry blood back to the heart.

The arteries divide into progressively smaller branches that supply the body's tissues and organs with oxygen and other nutrients. The oxygen and other nutrients enter the cells when the blood passes through the capillaries, while waste products from the cells travel into the capillaries.

Labeling are shown below:

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The complete question is as follows:

Label the blood vessels using the hints provided. Pterygoid plexus of v Middle meningeal Superficial temporal Maxillary v Facial v Posterior auricular V Reset Zoom.

which electromagnetic radiation wavelength is efficiently observed using ground based telescopes? a. radio b. infrared c. visible d. X-rays.

Answers

Radio is the electromagnetic radiation wavelength is efficiently observed using ground based telescopes. Option A.

What is meant by  electromagnetic radiation?

In terms of physics, electromagnetic radiation is made up of electromagnetic field waves that travel over space while carrying radiant electromagnetic energy. It consists of X-rays, gamma rays, microwaves, infrared, light, and radio waves. These waves are all a component of the electromagnetic spectrum.

The energy levels of electromagnetic radiation can range from low to high. It consists of x-rays, gamma rays, infrared light, visible light, ultraviolet light, radio waves, and microwaves.

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when air expands adiabatically (without gaining or losing heat), its pressure and volume are related by the equation , where is a constant. suppose that at a certain instant the volume is and the pressure is kpa and is decreasing at a rate of kpa/min. at what rate is the volume increasing at this instant?

Answers

The rate at which the volume is increasing is dV/dt equals 21.2 cm3/min.

What is adiabatic expansion?

Adiabatic expansion is defined as expansion in which there is no heat exchange between the system and its environment and the system uses its own energy to perform work.

An ideal gas is enclosed in an insulated container and allowed to expand in a vacuum for adiabatic free expansion. The work done by or on the system is 0 because the gas cannot expand because there is no external pressure for it to do so.

This should, I assume, state that PV 1.4 = C.

By applying the chain rule and the product rule to the derivative with regard to time, we arrive at:

[tex]PV^1^.^4[/tex] = C

[tex]\frac{d}{dt} (PV^1^.^4)[/tex] = d/dt( C)

On further solving the derivative we get,

(-7)(4201.4) + (99)(1.4)(4200.4)dV/dt = 0

-32934 + 1552.6dV/dt = 0

dV/dt = 32934/1552.6

dV/dt equals 21.2 cm3/min.

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along the axis of a dipole, 0.5 m from its cen- ter, you measure an electric field of magni- tude 30 n/c. the charge separation between the two point charges in the dipole is 0.004 m. what is the charge at the positive end of the dipole?

Answers

The resulting dipole is 0.56 N/C

Charges of the dipole, q = 30

Separation distance between the charges, d = 0.0010 m

Separation distance between the center and the charge, d' = d/2 = 0.25

x = 4.0 m

y = 0.0 m

Now,

The electric field due to the positive charge on the right of the origin:

E = k{q/(d'+x)²}

where

k = Coulomb's constant = 9 x 10⁹ Nm²/C²

Now,

E = 1124.72 N/C

Similarly, electric field due to the negative charge:

E' = k{q/(x-d')²}

E' = -1125.72 N/C

Thus

E(total) = E' - E = 0.56 N/C

Therefore, the positive charge is 0.56 N/C.

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anna and jon sit on a seesaw. anna has a mass of 60 kg and sits 2 m from the center. jon has a mass of 70 kg. how far from the center should jon sit so the seesaw is balanced?

Answers

To balance the seesaw, Jon should sit in the middle, where dJ = 1.7 m

Briefly:-

The equation for balancing the moments at the seesaw's center is as follows:

∑Mo = 0

'Mo =

Where:

Mo: Moments in the balance's center(o) added algebraically

Moment of the o point (Mo) (N*m)

force F ( N)

Distance from the force to the origin (in N*m)

Data

mA = 60 kg: Anna's mass mJ = 70 kg:

Jon's mass dA = 2 m:

Anna's distance from the seesaw's center g:

Gravitational acceleration

Calculating the distance (dJ) from Jon to the seesaw's center with ∑Mo = 0 Ana's weight is WA, and Jon's weight is WJ.

W = (mA*g)(dA) - (mJ*g)(dJ) = 0 (mA*g)(dA) - (mJ*g)(dJ) = 0

(mA)(dA) = (mJ)(dJ)

We multiply the equation by g:

The center where Jon should sit for the seesaw to be balanced is  = 1.7 m.

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a thin wire 7.0m long has a charge of 1 nC. Find the electric field strength 2.0 mm from the edge of the wire along the axis of the wire.

Answers

Answer:

1400

Explanation:

because when the 70m long x20m lone will give u 1400 then u time it with 1 that will give u 1400

To find the electric field strength at a distance of 2.0 mm from the edge of the wire, we can use the equation for electric field:

E = k * Q / r^2

where E is the electric field strength, k is the Coulomb constant (8.99 x 10^9 N * m^2 / C^2), Q is the charge on the wire (1 nC), and r is the distance from the edge of the wire (2.0 mm).

Plugging these values into the equation, we get:

E = (8.99 x 10^9 N * m^2 / C^2) * (1 x 10^-9 C) / (2.0 x 10^-3 m)^2

This simplifies to:

E = 2.24 x 10^5 N/C

So the electric field strength at a distance of 2.0 mm from the edge of the wire is approximately 2.24 x 10^5 N/C.

how fast would a(n) 83 kgkg man need to run in order to have the same kinetic energy as an 8.0 gg bullet fired at 400 m/sm/s ? express your answer with the appropriate units.

Answers

It can be said that the speed is v=3.9.0m/s

given data use for calculation:-

Generally the equation for the kinetic energy  is mathematically given as

K.E. = 1/2 m v2

K.E.=1/2*.008*(400*400)

K.E.= 640J

therefore velocity:-

[tex]V^{2}[/tex]= 2*KE/m

V= 3.9 m/s.

What does kinetic energy mean in everyday language?

The energy an object has as a result of motion is referred to as kinetic energy. If we want to accelerate an object, we must exert force. To apply a force, we must work hard. When the work is done, energy will have been transferred to the item, causing it to move at a new, constant speed.

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a uniform disk of radius 0.5 m is rotating around its center with angular velocity 4 , and angular acceleration 3.4 . a spec of dust is stuck on the disk at a distance of 0.33 from the center. what is the linear acceleration of the dust spec? answer in units of , round your answer to two decimal places.

Answers

The linear acceleration of the disk is [tex]8.17 m/s^{2}[/tex].

We know that, a rotating disk has two acceleration:

                       Radial acceleration ([tex]a_{r}[/tex]) = ω^2 * r  and  

                       Tangential acceleration[tex](a_{t} )[/tex] = [tex]\alpha r[/tex]

where ω = angular velocity

           [tex]\alpha[/tex] = angular velocity

           r = radius

Given, ω = 4 m/s , [tex]\alpha[/tex] = 3.4 [tex]m/s^{2}[/tex] , r = 0.5m

Putting these values in above equation we get

           [tex]a_{r} = 8 m/s^{2} \\a_{t} = 1.7 m/s^{2}[/tex]

The linear acceleration is given by:

           [tex]a = \sqrt{a_{r} ^{2} + a_{t} ^{2} }[/tex]

Putting respected values in above equation we get a = 8.17 [tex]m/s^{2}[/tex].

So the linear acceleration of the disk is [tex]8.17 m/s^{2}[/tex].        

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Ted hits a baseball with a velocity of 60 m/s at an angle of 45 degrees above the horizontal. What are the vertical and horizontal components of the ball's velocity?

Answers

The vertical and horizontal components of the ball's velocity be same and it is 42.42 m/s.

What is velocity?

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

Given data:

Magnitude of velocity of the baseball: v = 60 m/s.

It's direction be  an angle of 45 degrees above the horizontal.

Hence, vertical component of velocity be = vsinθ = 60 × sin45° m/s = 42.42 m/s.

horizontal component of velocity be = vcosθ = 60 × cos45° m/s = 42.42 m/s.

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Communication climate refers to the social tone of a relationship
O True
O False

Question 2 The interpretation of a message as confirming or disconfirming is
O objective
O subjective
O both
O none of the above

Question 3 1 pts Communication climate is determined by the degree to which people see themselves valued
O True
O False

Answers

1) Communication climate refers to the social tone of a relationship: True

2) The interpretation of a message as confirming or disconfirming is: subjective.

3) Communication climate is determined by the degree to which people see themselves valued: True.

What is communication climate?

The degree to which individuals esteem themselves affects the communication atmosphere. It is useless to paraphrase their critiques of us in return.

The atmosphere of communication is crucial because it may affect how messages are received. Understanding the notion is crucial because the communication climate is perceived, which enables companies to foster a pleasant atmosphere and offer clarification as needed.

The "overall feeling or emotional tone amongst people" is referred to as the "communication environment" (Wood, 2018).

1) True

2) subjective

3) True

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Only one of the statements below uses the term theory in its correct, scientific sense. which one?

Answers

According to the given statement Thousands of times have been used to test and validate Einstein's theory of relativity.

How do we use Einstein's theories today?

The Global Positioning System, or GPS, is a system of orbiting satellites that is developed with Einstein's Relativity in mind. We apply the Relativity Principle of Einstein every time they use the GPS. Disturbances move across space-time as gravitational waves, according to General Relativity.

How was Newton's theory refuted by Einstein?

Once more, Newton's theory violated relativity by predicting an instantaneous force. General Relativity is a brand-new alternative gravity theory that Albert Einstein proposed in 1915. Waiting for a complete solar eclipse was the only way to compare it to Newton's hypothesis. Today, 100 years ago, Einstein was shown to be correct.

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in 1923, the united states army (there was no united states air force at that time) set a record for in-flight refueling of airplanes. using two refueling planes, an airco dh-4b biplane was able to remain in flight for 38 h . during the flight, the refueling planes were able to air-transfer a total of 687 gallons of fuel to the plane in 9 refueling transfers. assume that the refueling nozzle had a diameter of 1.35 in and each refueling took 2.51 min to perform. calculate the velocity of the fuel through the nozzle. assume that the fuel filled the entire cross-sectional area of the nozzle.

Answers

The velocity of the fuel through the nozzle. assume that the fuel filled the entire cross-sectional area of the nozzle. 6.45ft/sq

Velocity is a vector expression of the displacement that an item or particle undergoes with appreciate to time . the usual unit of pace importance (additionally referred to as speed ) is the meter according to 2nd (m/s).

calculation:-

Volume of the fuel pump is V = Avt

V = 687 gallons = 2.6 m³

t = (2.31) 60 × 9

= 1247.4 sec

A = πr²

= 3.141 × (0.0368/2)²

= 0.00106 m³

V = Avt

2.6 m³ = 0.00106 m³ v × 1247.4

V = 1.966 m/s

V = 6.45 ft/sec

Nozzles are used within the rocket and plane engineering to provide jet propulsion, in intensive shattering and spraying technology, in jet gadgets and ejectors and in fuel dynamic lasers and gasoline mills (see gasoline turbine).

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four copper wires of equal length are connected in series. their cross-sectional areas are 1.08 cm2, 1.94 cm2, 3.08 cm2, and 5.06 cm2. a potential difference of 120 v is applied across the combination. determine the voltage across the 1.94 cm2 wire.

Answers

The voltage applied across 1.94 cm² wire is22.1 V

We are given that

A₁ = 0.7 cm² = 1.08*10⁻⁴ m²

A₂= 2.5 cm² = 1.94*10⁻⁴ m²

A₃= 2.2 cm² = 3.08*10⁻⁴ m²

A₄= 3 cm² = 5.06*10⁻⁴ m²

Using  1cm²=10⁻⁴ m²

We know that using resistance formula we can calculate voltage

R = ρL/A

In series

R=R₁+R₂+R₃+₄

R=ρL/{A₁+ρL/{A₂}+ρL/{A₃}+ρL/{A₄}

Substitute the values

R = ρL/(2.62*10⁴)

V = 120v

I = V/R

I = 120 / {ρL(2.62*10⁴)}

Now the voltage across can be determined.

Voltage across the 1.94 square cm wire=IR=I*(ρL/A₂)

Voltage across the 1.94 square cm wire=ρL/ 1.94*10⁻⁴=22.1 V

Voltage across the 1.94 square cm wire=22.1 V

Therefore, The voltage applied across 1.94 cm² wire is22.1 V

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if two objects of different temperature are placed in contact, will heat naturally flow from the object with higher internal energy to the object with lower internal energy?

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If two objects of different temperatures are placed in contact, heat will flow from the object with high internal energy to the object with low internal energy.

Internal energy is the sum total of the kinetic and potential energies of an object. The internal energy of an object depends on the temperature of the object. Heat will flow from an object with a high temperature to an object with a low temperature.

An object having a high temperature will definitely be having high internal energy. Therefore, heat will flow from the object of high internal energy to the object of low internal energy.

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what is the right expression for the rotational kinetic energy of an object that is only rotating about a fixed axis through its center of mass? (i.e., the object is not translating)

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The rotational kinetic energy of an object that is only rotating about a fixed axis through its center of mass is given by E_rot = 1/2 Iω^2, where I is the moment of inertia and ω is the angular velocity.

The rotational kinetic energy of an object is the energy associated with its rotation about an axis. It is equal to one-half the product of the object's moment of inertia and its angular velocity squared.

It is a form of kinetic energy and is usually represented by the symbol Krot. The rotational kinetic energy of an object depends on its moment of inertia and the angular velocity of its rotation. The equation for rotational kinetic energy is Krot= 1/2 Iω2, where I is the moment of inertia and ω is the angular velocity.

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