Complete the statement detailing the relative change in [h ][h ] when the phph of a solution changes from 6.406.40 to 8.40.

Answer:

I need help ASAP to with this question

Explanation:

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Measuring human proportions on skeletal remains from ancient sites as well as among modern human populations is known as: anthropometry

The anthropometry is the part of science that studies the proportions of the human body, using non-invasive methods such as the measurement of body mass, height and width.

By using anthropometry it is possible to assess the size, proportions and composition of the human body which gives a measure that reflects the nutritional state of health and allows predicting the performance, health and survival of the individual under analysis.

It is the amount of mass associated with a person's body

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The unifying relationship among the variables temperature, volume, pressure, and the number of moles is described and summarized by the ideal gas law.

The equation for ideal gas law is given below where T is temperature, V is the volume, P is the pressure, n is the number of moles of the gas, and R is the gas constant 0.082056 L⋅atm/mol⋅K

PV = nRT

Calculate first the moles of O2 from the moles of Ag2O

moles O2 = 0.5 moles Ag2O x 1 mol O2/2 mol Ag2O = 0.25 moles

Assuming that the oxygen gas is an ideal gas, we will use the ideal gas equation to calculate the volume it occupies.

V = nRT/P

V = 0.25 moles*0.082056*546k/1 atm =

11 L

Hence, volume of pure oxygen gas (o2) is 11 L

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The two principal factors that affect the force of air resistance on a falling object are frontal area and speed, because the force mostly depends on these two factors.

When an object falls through the air, it mostly encounters some sort of resistance to its speed and this resistance is named air resistance.

This resistance is present because of the collisions of the air molecules with the frontal surface molecules of the object.

Simply state, the two most common factors that have an impact on the degree of air resistance can be said out as the speed of the object and then the cross-sectional are of the object.

Because the more the speed, the more the air resistance and so is the case with the cross-sectional area.

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According to the current, the charge is 18 coulombs.

We need to know about current to solve this problem. Current can be defined as the flowrate of charge through the medium. It can be determined as

I = Q / t

where I is current, Q is charge and t is time.

From the question above, we know that

I = 250 mA = 0.25 A

t = 1.2 min = 72 seconds

By substituting the given parameters, we can calculate the charge

I = Q / t

0.25 = Q / 72

Q = 18 coulombs

Hence, the charge is 18 coulombs.

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Capacitor always needs a resistive path to charge or discharge.

Suppose the capacitor is charging through the path R1 and its current flow direction is also shown as per the figure.

Now suppose fully charged capacitor is disconnected from the circuit, hence there will be no current flow out from the capacitor.

But practically ideal capacitors do not exist, there must have some leakage paths suppose R2 and i2.

Therefore, we can see that i1 was entering to C but i2 was leaving C. Hence Capacitive current flow is in reverse direction.

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5 seconds is the additional time.

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Answer:

Explanation:

Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force

Answer:The first law of motion states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

The Total Distance covered by the train while slowing down is 8062.85 meters.

In the given situation,

We can find the distance covered by the tie fighter from the formula :

                               =>  [tex]S = ut + \frac{1}{2}at^{2}[/tex]

Here S = Distance, u = Initial Velocity, t = Time taken, a = Acceleration

It is given that, u = 607m/s, t = 14.6s, a = -7.5 m/s^2

The negative Acceleration means it is a case of Slowing down.

Putting values into the equation,

                               => S = (607)*(14.6) + (1/2)*(-7.5)*(14.6)^2

                               => S = 8862.2 + (-799.35)

                               => S = 8062.85

The total distance traveled while slowing is: 8062.85m

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The gravitational pull accelerates the Earth more since it is less heavy and causes it to move more quickly.

The mass of the Earth is what creates gravity. The combined gravitational force of all of its mass acts on the mass in your body. We couldn't survive without gravity. It produces the force that keeps the Earth in orbit around the Sun and keeps us on the surface of the planet. When two objects contact, forces are the mechanism by which energy is transmitted from one to the other, but forces do not themselves contain energy. Since gravity is a force, it only offers one method for objects to exchange energy and change its state.

The weakest force that humans are aware of is gravity.

Weight and gravity are not the same.

Gravity generates waves that move at light speed.

Gravitons, which are massless particles, may carry gravity.

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The third angle of the triangle should be 37π/72 rad.

We need to know about the triangle rule to solve this problem. One of the rules of the triangle is the total angle inside the triangle is 180⁰.

A + B + C = 180⁰

From the question above, the given parameter is

A = π/9 rad

B = 3π/8 rad

Convert the angle to radian

180⁰ = π

Hence, the total angle should be

A + B + C = π

π/9 + 3π/8 + C = π

C = π - (π/9 + 3π/8)

C = π - 35π/72

C = 37π/72 rad

Hence, the third angle of the triangle should be 37π/72 rad

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Answer:

B

Explanation:

The first modern personality test was the Woodworth Personal Data Sheet, which was first used in 1919. It was designed to help the United States Army screen out recruits who might be susceptible to shell shock.

so, B is correct

Answer:

The answer is B, I hope this helps.

The rise in temperature of the copper block after hitting the floor is 0.49°c

The quantity of heat energy needed to raise a substance's temperature per unit of mass is known as specific heat capacity. A material's specific heat capacity is a physical characteristic. Since its value is inversely correlated with the size of the system under study, it is also an illustration of an extended feature.

Energy can only be transformed from one form to another. It cannot be created or destroyed.

From the law of conservation of energy we know,

The potential energy of the block= cmΔT

mgh= cmΔT

m×9.8×20= 400×m×ΔT

196=400ΔT

ΔT=0.49°C

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Reflection is the process by which sound leaves its source and travels through a room's objects, walls, and ceiling before reaching a microphone or an eardrum.

The room's internal overhead lining The ceiling is very high. material used to cover a room's roof or walls. something akin to a towering canopy, an overhanging shelter, or a starry sky. Using a system of timber joists and beams that span the ceiling's length and width.

Ceilings assist in enclosing and dividing spaces, controlling the diffusion of light and sound inside a space, and preventing the transfer of sound across spaces.

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Given,

The magnitude of the resultant force is 39.7 N and makes an angle of 49.5° with the x-axis.

The two given forces are vectors, thus they have to be resolved horizontally and vertically to determine their resultant.

So that:

 Horizontal component = F Cos θ

  Vertical component = F Sin θ

Thus, given that: a = 28 lb at 45° on x & y axis, and b = 12 lb at 30° below x-axis.

i. Resolving the vector horizontally, we have:

horizontal component = 28 Cos 45° + 12 Cos 30°

                                    = 19.80 + 10.39

horizontal component, x  = 30.19

ii. Resolving the vectors vertically, we have:

vertical component = 28 Sin 45° + 12 Sin 30°

                               = 19.80 + 6.0

vertical component, y  = 25.80

a. Magnitude of the resultant force, |R| = [tex]\sqrt{x^{2} + y^{2} }[/tex]

= [tex]\sqrt{(30.19)^{2} +(25.80)^{2} }\\\\[/tex]

= 39.7124

|R|     = 39.7 Newtons

b. The angle that the resultant makes with the positive x-axis can be determined by:

[tex]Tan\ \theta = \frac{x}{y} \\\\\theta = Tan^{-1} \frac{30.19}{25.80} \\\\= 49.4832\\\\\theta = 49.5\textdegree[/tex]

Therefore, the magnitude of the resultant force is 39.7 N and makes an angle with the x-axis.

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Uniform circular motion is an example of this question.

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Answer:

4

Explanation:

if there are 1/4 cups and you need to fill a cup, you need 4
4 x 1/4 = 4/1
4/1 = 1

Initial velocity exists at 19.6 m per second. Plus acceleration exists equivalent to expression due to gravity, but it exists downward, so it will be negative -9.8 m per second squared and time exists three seconds, so this exists equivalent to this gives us - 9.8 meter per second velocity after 3 seconds.

The acceleration of the ball will be a constant [tex]$9.8 \frac{\mathrm{m}}{\mathrm{s}^2}$[/tex] (downward), regardless of whether the ball exists traveling upward or downward.

The equation that makes this calculation simplest is

[tex]$$V_f=V_i-g(\Delta t)$$[/tex]

where the negative sign has been used to account for the opposite directions of [tex]$V_i$[/tex] and g. After 3 seconds,

[tex]$V_f=19.6-(9.8)(3)=19.6-29.4=-9.8 \frac{m}{s}$$[/tex]

The negative result tells us that the ball is on its way downward by this time (consistent with our choice of a negative value for the downward acceleration of gravity).

Initial velocity exists at 19.6 m per second. Plus acceleration exists equivalent to expression due to gravity, but it exists downward, so it will be negative -9.8 m per second squared and time exists three seconds, so this exists equivalent to this gives us - 9.8 meter per second velocity after 3 seconds.

The complete question is:

A ball is thrown upward at a velocity of 19.6 m/s. What is its velocity after 3.0 s, assuming negligible air resistance?

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Inductor releases its stored energy before it is removed from the circuit.

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Both balls have the same velocity upon reaching the ground.

                    [tex]\begin{aligned}\\\small K.E +P.E &=\small K.E_1 +P.E_1\\\\\small \frac{mv^2}{2}+mgh&=\small \frac{mV^2}{2}+0\\\\\small V&=\small \sqrt{v^2+2gh}\end{aligned}[/tex]

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The true airspeed will increase and true altitude will increase.

True airspeed is the airspeed of an aircraft relative to undisturbed air.

It's the aircraft speed relative to the airmass in which it's flying.

If the outside air temperature increases during a flight at constant power and at a constant indicated altitude, the true airspeed will increase and true altitude will increase.

Thus, the true airspeed will increase and true altitude will increase.

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By using Hooke's Law, the force constant is 4 x 10⁶ N/m.

We need to know about Hooke's Law to solve this problem. Hooke's Law describes the force applied to spring (elastic materials) will proportional to spring constant and displacement under the elastic condition. It can be described as

F = k . x

where F is force, k is spring constant and x is displacement.

The potential energy of spring can be determined as

PE = 1/2 . k . x²

where PE is potential energy

From the question above, we know that

x = 5 mm = 0.005 m

PE = 50 joule

By substituting the given parameter, we can calculate the force constant of the wire

PE = 1/2 . k . x²

50 = 1/2 . k . (0.005)²

k = 4 x 10⁶ N/m

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The common element among measures of speed, rate, and latency is time.

The only science that specifically studies time is physics, but even physicists acknowledge that time is one of the most challenging aspects of our universe to comprehend. However, time is typically seen as an ontologically "fundamental" or primary idea and is not composed of or dependent upon anything else, even in the most advanced and sophisticated physical models.

Time is typically defined by its measurement in the sciences; it is only what a clock says. Since physics in particular frequently requires extremely precise time measurements, time must be regarded as an infinitely divisible linear continuum and not as a quantized quantity (i.e. composed of discrete and indivisible units). Time can now be measured accurately to about 1015 seconds thanks to contemporary atomic time standards like TAI and UTC and extremely precise atomic clocks. This is equivalent to about 1 second of error in roughly 30 million years.

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The frequency of light from a laser is 4.878 x10^ 14 s-1 hertz

v= c/ lambda

c= 3.00 x10^8 m/s

nm into meters

615nm (1m/ 1x10^9 nm) = 6.15x 10^-7 m

use frequency formula

v = 3.00 x10^8 m/s // 6.15 x10 ^-7

v = 4.878 x10^ 14 s-1 hertz

The frequency of light from a laser is 4.878 x10^ 14 s-1 hertz

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Answer:

Mendeleev is generally given more credit than Meyer because his table was published first, and because of several key insights that he made regarding the table.

Explanation:

Mechanical power is being provided for constant rotation of the armature in operating mechanical devices.

The armature has two functions. The first is to transport current across the field, resulting in shaft torque in a rotating machine or force in a linear machine. The second function is to create electromotive force (EMF).

The relative motion of the armature and the field produces an electromotive force in the armature. When employed as a motor, the EMF opposes the armature current, and the armature transforms electrical power to mechanical power in the form of torque and transfers it via the shaft. The armature EMF drives the armature current, and the shaft movement is converted to electrical power when the machine is utilized as a generator.

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The average speed of the complete round trip is 65.57 km / h.

We need to know about the average speed to solve this problem. The average speed can be determined as the total distance divided by the total time. It can be written as

v = d / t

where v is average speed, d is distance and t is time.

From the question above, we know that

d1 = 300 km

v1 = 93 km/h

t lunch = 1 hour

d2 = 300 km

v2 = 56 km/h

Find the time during the outgoing

v1 = d1 / t1

t1 = d1 / v1

t1 = 300 / 93

t1 = 3.23 hours

Find the return time

v2 = d2 / t2

t2 = d2 / v2

t2 = 300 / 56

t2 = 5.36 hours

Hence, the total time

t = t1 + t2 + t lunch

t = 3.23 + 5.36 + 1

t = 9.59 hours

Find the average speed

v = d / t

v = (300 + 300) / 9.59

v = 65.57 km / h

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The time interval in fall motion is 1.86 seconds.

We need to know about fall motion to solve this problem. Gravity has a big role in fall motion. It can be described as

vt = vo + g . t

vt² = vo² + 2 . g . h

h = vo . t + 1/2 . g . t²

where vo is initial speed, vt is final speed, g is the gravitational acceleration (9.8 m/s²), h is height and t is time.

From the question above, we know that:

h = 30.8

vo = 7.4 m/s

Find the final velocity

vt² = vo² + 2 . g . h

vt² = 7.4² + 2 . 9.8 . 30.8

vt² = 54.76 + 603.68

vt² = 658.44

vt = 25.66 m/s

Find the time interval

vt = vo + g . t

25.66 = 7.4 + 9.8t

9.8t = 18.26

t = 1.86 seconds

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Answer: 0.05 M/min

Explanation: (0.85 - 0.55)/ 6 mins