Explain how the fixed points are used when calibrating a thermometer. ​

The given statement " Sherlock Holmes established and ran the first ever crime laboratory." is False. Sherlock Holmes is a fictional character created by Sir Arthur Conan Doyle, and therefore did not establish or run a crime laboratory.

While Sherlock Holmes is a fictional character known for his exceptional skills in solving crimes, he did not establish or run the first-ever crime laboratory. The first crime laboratory was established in 1910 in France by Edmond Locard, who is considered the "father of forensic science." Locard's laboratory focused on analyzing physical evidence such as fingerprints, bloodstains, and hair fibers to help solve crimes. Since then, crime laboratories have become a vital part of the criminal justice system and have helped solve countless crimes through the use of scientific methods and techniques.

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Potential energy of the 2-charge system: According to the question, we have two point charges of values +3.4 µC and +6.6 µC separated by 0.20 m. The potential energy of the two-point charge system is 820.41 J.

The formula for calculating the potential energy of the two-point charge system is given by;

U = (kq1q2)/d,

Where; U = potential energy of the system q1 = value of the first point charge

q2 = value of the second point charge,

k = Coulomb's constant = 8.99 × 10^9 Nm^2/C^2

d = separation distance between the two charges

Plugging in the values, we get;

U = [(8.99 × 10^9 Nm^2/C^2)(3.4 µC)(6.6 µC)]/(0.20 m)

U = 820.41 J (Joules)

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Answer:

Explanation: as,

v=f∧

v=200×10³×1.5×10³

v=2.7×10^7ms⁻¹

The velocity of the radio waves is 3 × 10⁸ ms⁻¹.

A radio station frequency = 200 KH

wavelength = 1.5 km

         Radio waves in the electromagnetic spectrum has the longest wavelength and it will always be below 300GHz. The radio waves can be generated with acceleration through some charged particles. Only through the transmitter via antenna the radio waves can gets transmitted. Radio waves can be used in all the electronic devices as mobile phones, radio communication, radars and navigations.

                               V = f λ

            Velocity,  v = ( 200 × 10³ ) × ( 1.5 × 10³ )

                               = ( 300 × 10⁶ )

                             v = 3 × 10⁸ ms⁻¹.

Hence, the velocity of the radio waves is 3 × 10⁸ ms⁻¹.

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Answer:

a)   v = 0,  a = - 15 pi²

b) v = - 40.8 cm / s,  a = -74.2 cm / s

Explanation:

the simple harmonic motion is described by the expression

        x = A cos (wt + Ф)

in that case they indicate the amplitude of the movement

        A = 15 cm

angular velocity and period are related

        w = 2π / T

         w = 2π/ 2

         w = π rad / s

speed is defined by

         v = dx / dt

          v = -A w sin (wt + Ф)

acceleration is defined by

         a = dv / dt

         a = - A w² cos (wt + Ф)

In order to evaluate this expression we must know the value of the phase constant (Ф) that meets the initial conditions, the most common thing is that the system is released, v = 0 for y = 0 s, let's use the speed equation

          v = -A w sin (0+ Ф)

for this expression to be zero, the sine must be zero, so

         Ф= 0

now let's write the equations for our case

         v = - 15 π sin (π t)

         a = - 15 π² cos (π t)

a) for x = 0

          v = 0

          a = - 15 pi²

b) for x = 7.5 cm

Let's find out how long it takes to get to this position

          x = 15 cos (π t)

          7.5 / 15 = cos π t

          pi t = cos⁻¹ 0.5

          t =  1.047/π

don't forget that the angles are in radians

          t = 0.333 s

now let's look for speed and acceleration

         v = - 15 π sin (π 0.333)

         v = - 40.8 cm / s

         a = - 15 π² cos (π 0.333)

         a = -74.2 cm / s

The energy of the wave with a frequency of 9.50 x 10^12 Hz is approximately 6.2947 x 10^-21 Joules.

The energy of a wave can be calculated using the equation E = h*f, where E represents the energy, h is Planck's constant (approximately 6.626 x 10^-34 J·s), and f is the frequency of the wave.

Given a frequency of 9.50 x 10^12 Hz, we can substitute this value into the equation to find the energy:

E = (6.626 x 10^-34 J·s) * (9.50 x 10^12 Hz)

E = 6.2947 x 10^-21 J

Therefore, the energy of the wave with a frequency of 9.50 x 10^12 Hz is approximately 6.2947 x 10^-21 Joules.

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Answer:

Explanation:

Resistance of first wire

R₁ = ρL / A where ρ is specific resistance

for second wire the resistance

R₂ = ρ2L / A = 2 ρL / A

For third wire

R₃ = ρL /2 A

The resistance is in the order

R₂ > R₁ > R₃

So , current will be maximum in R₃

I₃ > I₁ > I₂

Where I₁ , I₂  and I₃ is current in first , second and third wire .

The trip takes a total of 1.5 hours and has an average speed of 40 mph.

To calculate the time taken for each leg of the trip, we can use the formula time = distance/speed.

For the first leg of the trip, the car travels 15 miles at a speed of 45 mph. Using the formula, we find that the time taken for this leg is 15/45 = 0.33 hours.

For the second leg of the trip, the car travels another 15 miles but at a speed of 30 mph. Using the formula, we find that the time taken for this leg is 15/30 = 0.5 hours.

To find the total time for the trip, we add the times for each leg: 0.33 hours + 0.5 hours = 0.83 hours.

To calculate the average speed for the entire trip, we use the formula average speed = total distance/total time. The total distance traveled is 15 miles + 15 miles = 30 miles. The total time taken is 0.83 hours. Plugging these values into the formula, we find that the average speed for the trip is 30/0.83 = 36.14 mph.

Therefore, the trip takes a total of 1.5 hours and has an average speed of 40 mph.

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Answer:

(I UNDERLINED AND MADE ITALIC THE MOST IMPORTANT INFORMATION) A vocation is an occupation to which a person is especially drawn or for which they are suited, trained, or qualified. Though now often used in non-Latin vocātiō 'a call, summons')religious contexts, the meanings of the term originated in Christianity.  (from

Explanation:

A call, summons, or impulsion to perform a certain function or enter a certain career, esp. a religious one. Vocation is defined as a call to do something, especially regarding religious work. The woman's desire to become a nun is an example of vocation. a strong impulse or inclination to follow a particular activity or career. a divine call to God's service or to the Christian life. a function or station in life to which one is called by God: the religious vocation; the vocation of marriage. There are many different types of vocations in today's society. The three significant vocations are, single life, married life, and religious life. Single life is one of the three types of vocation. Definition of Vocation and Career: Vocation is what you strive to do in your life. It is the career you want to be in. Career, on the other hand, is a series of jobs, even change of professions, in a lifetime of an individual. Vocation is literally your "calling", what you are good for or destined for. It usually is a property/talent/predisposition of your person. A mission, in contrast, is a particular task given to you. Even if you are on "a mission from God", there may be retirement from it eventually.

The cooling rate of the object is 0.054.

Let's find the cooling rate (k) of an object using the given information. Ts = 10 °CTo = 110 °CT1 = 35 °Ct2 = 25 minutes. Now, the given formula is T = Ts + (To - Ts) e ^ -kt. Here, we know that the temperature drops from 110°C to 35°C, which is 75°C in 25 minutes. Now, we will substitute the values in the formula as follows:35 = 10 + (110 - 10) e ^ (-k × 25) => (35 - 10) / 100 = e ^ (-k × 25) => 25 / 100 = k × 25 => k = 0.054. Therefore, the cooling rate of the object is 0.054. Hence, option A is correct.

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An electrician, 44 years old, was startled. He responds to verbal cues and speaks erratically. blow 12 breaths per minute with a BVM.

An electrician is a tradesperson with expertise in wiring electrical systems for stationary machines, transmission lines, and other associated machinery. Electricians may work on new electrical component installations or the upkeep and repair of current electrical infrastructure. In factories, businesses, and residences, electricians are responsible for fixing, setting up, and maintaining the electrical power, lighting, and communications systems.

• Setting up and maintaining electrical devices, systems, and equipment.

• Using and maintaining power and hand tools like drills, pliers, and screwdrivers.

• Fixing wire infrastructure.

• Setting up conduits, wires, and tubing for electrical use.

• Checking systems, tools, and equipment.

Depending on the electrician's specialty, different working conditions apply. Typically, an electrician's job requires them to climb ladders and lift equipment and supplies. An electrician occasionally has to operate on scaffolding or in a small area, and they frequently have to bend over, stoop down, or kneel to make connections in tight spaces. Many of the days that construction electricians work may be spent in noisy, unclean outside or semi-outdoor construction sites. Industrial plants' heat, dust, and noise may be exposed to industrial electricians. Electricians who specialize in power systems may be called upon to perform emergency repairs in all types of bad weather.

A 44 year old electrician has been shocked. He is responsive to verbal stimuli and has garbled speech. His airway is open ad he is breathing shallowly at a rate of 8 times per minute. his pulse is slow and irregular. Which one of the following actions should the EMT perform next?

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The electrical wires leading to your building are typically thinner than the main distribution lines.

This is because the main distribution lines are designed to carry a larger amount of electrical power across longer distances, so they require a thicker wire to minimize resistance and energy loss. In contrast, the wires leading to your building carry less power as they are intended for local distribution, which requires less electrical load and shorter distances.

The thickness of wires is determined by the amount of power they carry. The main distribution lines carry a much larger amount of power than the wires leading to individual buildings. This is because the power transmitted through the main distribution lines is distributed to multiple buildings and residential areas, whereas the wires leading to a single building are designed to carry power for that specific building's needs.

Hence, the wires leading to a building would carry less power and may be thinner than the main distribution lines.


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The x- & y-components in vector A are denoted by Ax and Ay. The angle between the vector and the x-axis was equal by tan(-1) Ay/Ax.

The vector is a quantity or phenomenon with independent properties for both size and direction. Any mathematical and geometrical representation of a quantity is another use of the term. Elements of vectors in nature include motion, pressure, electromagnetic fields, or weight.

Physical quantities called vectors need both magnitude as well as direction. Scalars include things like height, energy, area, and volume. Vectors can take the forms of displacement, acceleration, and acceleration.

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The purpose of making a large RNA molecule is translating genetic information

It is the process by which RNA is used to produce proteins

A molecule is the smallest part of a substance which can normally exist alone and still retain the properties of that substance.

The translation continues into the molecular machines and structures of the cell to regulating the activity of genes during development, cellular differentiation, and changing environments.

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Wavelength of the photons is λ  = 700 *10^-9 m

Energy of the photon is  E  = h c / λ

= 6.625*10^-34 J s * 3.00*10^8 m/s / 700*10^-9 m

= 2.83*10^-19 J

The length of a one-dimensional box in which an electron in the n=1 state  is

E  = n^2 h^2 / 8 m L^2

2.83*10^-19 J  = 1 * ( 6.625*10^-34 Js )^2 / 8 * 9.11*10^-31 kg * L^2

L  =  4.6*10^-10m    

What is Wavelength?

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Answer :

Answer:

Selected answers A) and D)

Explanation:

Acceleration

According to the Newton's second law of motion, the acceleration of an object is directly proportional to the net force F and inversely proportional to the object's mass:

\(\displaystyle a=\frac{F}{m}\)

We are given four situations, let's compute the acceleration on each case.

A) The block A has a mass of m=5 kg and a net force of F=20 N. The acceleration is:

\(\displaystyle a=\frac{20}{5}=4\ m/s^2\)

This option must be selected because the acceleration is the same as the option D. Correct option A

B) The block B has a mass of m=10 kg and a net force of F=25 N. The acceleration is:

\(\displaystyle a=\frac{25}{10}=2.5\ m/s^2\)

No other option has this value of acceleration, so this option is not correct.

C) The block C has a mass of m=20 kg and a net force of F=100 N. The acceleration is:

\(\displaystyle a=\frac{100}{20}=5\ m/s^2\)

No other option has this value of acceleration, so this option is not correct.

D) The block D has a mass of m=20 kg and a net force of F=80 N. The acceleration is:

\(\displaystyle a=\frac{80}{20}=4\ m/s^2\)

This option must be selected because the acceleration is the same as the option A. Correct option D

Block A (m = 5kg; F = 20 N) and Block D (m = 20 kg; F = 80 N) have the same acceleration.

Acceleration (a) is the change in velocity over time.

It is directly proportional to the force applied (F) and inversely proportional to the mass of the object (m).

We can calculate the acceleration of each block using Newton's second law of motion.

\(a = \frac{F}{m}\)

\(a = \frac{F}{m} = \frac{20N}{5kg} = 4m/s^{2}\)

\(a = \frac{F}{m} = \frac{25N}{10kg} = 2.5m/s^{2}\)

\(a = \frac{F}{m} = \frac{100N}{20kg} = 5m/s^{2}\)

\(a = \frac{F}{m} = \frac{80N}{20kg} = 4m/s^{2}\)

Block A (m = 5kg; F = 20 N) and Block D (m = 20 kg; F = 80 N) have the same acceleration.

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Answer: CO

I hope this helps

Answer:

co

Explanation:

Answer:

Explanation:

how far around a circle is once around in degees?

1.5 * 360 = 540°

The Absolute pressure at the bottom of the container filled with water which has a thick layer of oil on the top will be 2735.21 Pa.

Information given as:

Height (h) = 31 cm = 0.31 m

Acceleration due to gravity (g) = \(9.8 m/s^{2}\)

Specific gravity of oil = 0.900

So density of oil (ρ)= \(0.9X1000 = 900 kg/m^{3}\)

We know that absolute pressure is given by the formula, here

So absolute pressure will be equal to \(P_{o} = 1.01 X 10^{5} Pa\)

So absolute pressure of the oil will be 2735.21 Pa

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Cesium-134, cesium-137, and iodine-131. According to UNSCEAR, iodine-131 has a half-life of only eight days, yet it is quickly inhaled through the air and has a tendency to concentrate in the thyroid gland.

A low-power test on the Chernobyl nuclear reactor power plant's Number Four RBMK reactor went awry on April 26, 1986, resulting in an explosion and fire that destroyed the reactor building and spilled a significant amount of radioactivity into the atmosphere.

After the SCRAM began, there was a significant power increase that caused the core to overheat. A few seconds later, this overheating led to the initial explosion. Several of the fuel rods cracked and became obstructed.

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Answer:

600 J

Explanation:

KE = 1/2 mv^2

The graphs display the function solution y = ex and three numerical solutions -Euler, Improved Euler, and Runge-Kutta- at different intervals. The Relative Deviation on the right measures the difference between the numerical solutions and the exact function solution.

The analysis of each set of graphs involves comparing the numerical solutions (Euler, Improved Euler, and Runge-Kutta) with the exact function solution y = ex. The Relative Deviation provides an indication of how closely the numerical solutions approximate the exact solution.

To analyze each set of graphs, follow these steps:

By examining the graphs and assessing the Relative Deviation, one can analyze the accuracy and performance of the numerical solutions -Euler, Improved Euler, and Runge-Kutta- in approximating the exact function solution y = ex at different intervals or iterations.

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A car moves along a straight line . The velocity of car at start will be 12m/s.

Option C is correct.

s = 12t + 3t² - 2t³

\(\frac{ds}{dt}\) = 12 + 6t - 6t

so t = 0 then

\(\frac{ds}{dt}\) = 12 m/s

A vector representation of the time-dependent displacement experienced by an object or particle is velocity. The meter per second (m/s) is the standard unit of velocity magnitude, which is also known as speed. Alternately, the magnitude of a velocity can be expressed in centimeters per second (cm/s).

Because velocity has magnitude as well as direction, it is a vector quantity. Speed, on the other hand, is a scalar quantity because it only has a magnitude and no direction.

Uniform velocity, variable velocity, average velocity, and instantaneous velocity are the various velocities

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Answer:

Explanation:

Just use the acceleration equation here:

\(a=-\frac{v}{t}\) where a = -9.8; velocity is also negative because it's falling down and down is negative. Filling in:

\(-9.8=-\frac{v}{8}\) so

-9.8(8) = -v and

v = 78.4 m/s downward (the word "downward" takes place of the negative sign)

Uranium is usually used in atomic fission.

This comes from the fact that this element is easy to control.

Answer:

The thermic effect (TEF) is greater for protein compared to carbohydrate and fat. The body can store excess amino acids for later use. The protein-sparing effect spares the utilization of protein as an energy source and allows it to be used for more important metabolic functions.

Answer:

mass 3.67 kg, density 600 kg/m3) is fitted

with lead (density 1.14 * 10^4 kg/m3) so that it floats in water with

0.900 of its volume submerged. Find the lead mass if the lead is fitted

to the block’s (a) top and (b) bottom.