Why does an increase in P. D of a thermistor decrease the resistance and increase the temperature???

Answer:

1.12

Explanation:

Acellus

Answer: +1.12

Explanation:

This answer works for Acellus! :)

An engineer comes to a decision to dampen the oscillations by way of applying one shock absorber to each spring. those surprise absorbers practice a speed‑established drag force these shock absorbers follow a pace-structured drag pressure F = mv that opposes damping the oscillations making use of one surprise absorber to each spring.

Engineers, as practitioners of engineering, are specialists who invent, design, analyze, construct and take a look at machines, complicated structures, systems, devices, and materials to fulfill functional targets and necessities while considering the limitations imposed through practicality, law, safety, and value.

Engineers design, construct, and hold numerous complex systems and systems, from buildings to software programs. while there are many engineering professions, there's one steady engineering mindset: to innovate. A four-year university degree in technical know-how, mathematics, or engineering. Accreditation by an engineering firm comprised of ABET or the Accreditation Board of Engineers and Ers. engineering license. Non-traditional credentials including professional certificates work portfolios and coding.

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The distance between adjacent dark spots in a double-slit diffraction pattern is 0.010 m.

In a double-slit diffraction pattern, the dark spots are formed due to destructive interference between the waves coming from the two slits.

The spacing between adjacent dark spots can be determined using the formula for the position of dark fringes:

dsin(θ) = nλ

where:

d is the distance between the slits (1 mm = 0.001 m),

θ is the angle of the dark fringe from the central maximum,

m is the order of the fringe (m = 1 for adjacent dark spots), and

λ is the wavelength of light (500 nm = 0.0005 m).

Given that the distance from the slits to the screen is 2 m, we can consider the approximation sin(θ) ≈ θ for small angles. Rearranging the equation, we get:

θ = nλ/d

  =\(\frac {(1)) (0.0005 m)}{(0.001 m)}\)

  = 0.5 radians

Now, using the small angle approximation, we can approximate the distance between adjacent dark spots:

= 2 (distance from the slits to the screen)θ

= 2(2 m)(0.5)

= 2 m

Therefore, the correct choice is (a) 0.010 m as the distance between adjacent dark spots in the double-slit diffraction pattern.

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(a) The period of Earth's rotation about its axis is approximately 24 hours.

(b) The period of Earth's revolution around the Sun is approximately 365.25 days.

The answer in part (b) is larger than that in part (a) because the Earth's rotation about its axis is a much smaller movement compared to its revolution around the Sun. The Earth's circumference at the equator is approximately 40,075 km, while its average distance from the Sun is approximately 149.6 million km. This means that the Earth has to travel a much greater distance to complete one revolution around the Sun than to complete one rotation about its axis. Although it takes significantly longer for the Earth to go once around the Sun than to rotate once about its axis, the distance traveled is much greater, resulting in a larger answer.

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answer: C

Explanation:

move from one atom to another, the atom that loses an electron becomes positively charged and an atom that gains electrons becomes negatively charged

Answer:

Electrons

Explanation:

Ionised atoms loose and gain electrons.

hope it helps!

Answer: Yes True.

Explanation:

According to the statement, φ=BAcos(theta)

.It represents the relationship between magnetic flux φ with magnetic field B and area A. and angle theta between magnetic field and area A.

The extent of the greenhouse effect for Venus is 597.98 Kelvin if the observed surface temperature of Venus is 700 K.

The solar constant, or the amount of energy that the sun emits per unit area per unit time, can be calculated using the Stefan-Boltzmann law:

E = σT^4

where σ is the Stefan-Boltzmann constant (5.67 x 10⁻⁸ W/m² K⁴) and T is the temperature of the sun in kelvins.

The radiant energy received by Venus from the sun can be calculated as follows:

E = (σT⁴) × (πR²) / (4πd²)

where R is the radius of the sun and d is the average distance of Venus from the sun.

E = (5.67 x 10⁻⁸) × (5770)⁴ × (π × (6.955 x 10⁸)²) / (4π × (1.08 x 10¹¹)²)

E = 651.59 Joules

Next, we can calculate the temperature of Venus if it were not for the greenhouse effect, it radiates as a blackbody with an emissivity of 0.75. This temperature can be calculated using the following equation:

E = σT₁⁴

Where T₁ is the surface temperature of Venus.

T₁ = (E / σ)⁽°²⁵⁾ = (651.59 / (5.67 x 10^-8))^(1/4)

T₁ = 102.82 K

The greenhouse effect can be calculated as the difference between the observed surface temperature of Venus (700 K) and the temperature of Venus without the greenhouse effect:

Greenhouse effect = 700 K - T₁

= 700 - 102.82 = 597.18

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The laws enunciated by Newton, and considered as the most important in classical mechanics, are three: the law of inertia, the relationship between force and acceleration, and the law of action and reaction. Newton argued that all movements adhere to these three main laws, formulated in mathematical terms.

Answer:

In classical mechanics, newton's laws of motion are three laws that describe the relationship between the motion of an object and the forces acting on it.

C) Tiny echoes bounce back to the dolphin.

When a dolphin makes a sound, it travels through the water in the form of sound waves. If these sound waves encounter an object, such as a fish or a rock, some of the sound waves will bounce back towards the dolphin in the form of echoes.

What is Sound?

Sound is a type of energy that is produced by the vibration of matter. When an object vibrates, it creates pressure waves that travel through a medium, such as air, water, or solid materials. These waves consist of alternating high and low pressure areas, and are detected by our ears as sound.

This process is known as echolocation, and it is used by dolphins and other animals to navigate, locate prey, and communicate with other members of their species. Dolphins are able to analyze the echoes that bounce back to them to determine the size, shape, and distance of objects in their environment. This ability allows them to hunt and move around in their underwater habitat with great precision, even in conditions of low visibility or darkness.

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The wavelength of the second line in the Balmer series is 304 nm and fourth line is 1093.7 nm.

The Balmer series in the hydrogen spectrum has spectral lines that are in the visible spectrum.

The wavelength is determined using the Balmer-Rydberg equation.

Wavelength for any two selected lines from the Balmer series of the spectra of hydrogen,

1 / λ = R (1/ n₁² - 1/ n₂²)

Where,

λ is the wavelength,

R is the Rydberg constant (1.0974 x 10⁷ m⁻¹),

n₁ and n₂ are integers where n₂ > n₁.

First, let us choose n₁ = 2, which is the second energy level and we will calculate the wavelength of the second line.

n₂ = 3λ = R(1/2² - 1/3²)

λ = R (4/36 - 1/9)

λ = R (1/36) = (1.0974 x 10⁷ m⁻¹) / 36

λ = 3.04 x 10⁻⁷ m = 304 nm

The wavelength of the second line in the Balmer series is 304 nm.

Now, we will calculate the wavelength of the fourth line.

n₂ = 5n₁ = 2λ = R (1/2² - 1/5²)

λ = R (4/100 - 1/25)

λ = R (3/100) = (1.0974 x 10⁷ m⁻¹) / 100 x 3

λ = 1.0937 x 10⁻⁷ m = 1093.7 nm

The wavelength of the fourth line in the Balmer series is 1093.7 nm.

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Answer:

H = 1/2 g t^2          time t for an object to fall a distance H

t = (2 H / g)^1/2 = (2 * 45 / 9.80)^1/2 = 3.03 sec for the key to fall 45 m

V = 12 m / 3.03 m/s = 3.96 m/s

Answer:

5 m/s

Explanation:

your welcome

The speed of a wave equals to Wavelength and Frequency. The SI unit of speed of wave is m/s. Thus, option D is correct.

The speed of wave is distance travelled by the wave in given time. It is related to both wavelength and frequency. Wavelength is measured in meters and frequency in hertz.

From the givens:

Frequency(f) = 2 Hz.

Wavelength(λ) = 10m.

Amplitude = 3m ( Amplitude does not affect the speed of wave)

Speed (v) = λ × f

               = 10 × 2

              = 20 m/s.

Therefore, the speed of the wave is 20 m/s. Hence, Option D is correct.

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Centripetal refers to “center-seeking” Quantifies the change in directionof the velocity The acceleration is directed toward the center of the circle of motion.

The magnitude of the centripetal acceleration is given by V^2/r, the direction is toward the center of the circle. The tangential component of the acceleration is due to changing speed. The centripetal component of the acceleration is due to changing direction.

When an object is rotating at a constant angular velocity, the whole object has a constant angular velocity. Therefore, every mint on the turntable has the same, constant angular velocity.

The acceleration which causes the tangential velocity to change direction is called Centripetal acceleration. Centripetal acceleration is always in toward the center of the circle.

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Answer:

A. Energy streaming through space toward Thomas

Explanation:

its correct did it on a test

Answer:

Light travels at 3.0 x 108 m/s in a vacuum.

Explanation:

Light travels at 3.0 x 108 m/s in a vacuum.

When you double the unbalanced force on an object of a given mass, the acceleration will also double, according to Newton's second law of motion. This law states that the acceleration of an object is directly proportional to the net force acting upon it and inversely proportional to its mass.

To elaborate, Newton's second law is represented by the equation F = m*a, where F is the net force, m is the mass of the object, and a is the acceleration. If the unbalanced force is doubled, the equation becomes 2F = m*a'. Since the mass of the object remains constant, the new acceleration (a') must also double to maintain the balance in the equation. This means that the acceleration of the object will increase twice as much when the unbalanced force is doubled.

In summary, doubling the unbalanced force on an object of a given mass will result in a doubled acceleration, as dictated by Newton's second law of motion. This relationship demonstrates the direct proportionality between force and acceleration while keeping the mass constant.

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Answer:

D. the track exerts a force that is equal and in the opposite direction as the force exerted by the tires

Explanation:

Newton's third law of motion states that for every action, there is an equal and opposite reaction. This speaks of equality in magnitude of force applied but in an opposite direction to one another.

According to this reaction, a car's tires exert a force on the track, this means that in accordance to Newton's third law, the track must exert an equal but opposite force on the car's tires. This causes the car to accelerate forward.

The approximate delta-v requirements for the listed maneuvers, the approximate range is:

A reaction mass engine, such as a rocket powered by propellant or a jet powered by fuel, can be measured by its specific impulse, which is commonly abbreviated as Isp. The specific impulse is directly proportional to the effective exhaust gas velocity for engines whose reaction mass is only the fuel they carry.

The propellant's mass is utilized more effectively in a propulsion system with a greater specific impulse. This means that for a given delta-v in a rocket, less propellant is needed, allowing the engine-attached vehicle to gain altitude and velocity more effectively.

The mass of external air that is accelerated by the engine in some way, such as by an internal turbofan or heating by fuel combustion participation then thrust expansion or by external propeller, can contribute to specific impulse in an atmospheric context. Jet engines have a much higher specific impulse than rocket engines because they use external air for combustion and bypass. The effective exhaust velocity is a notional velocity that corresponds to the specific impulse in terms of the propellant mass expended. It has units of distance per time.

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Answer:

C

Explanation:

don't worry Tama yan base sa pagkakaintindi ko

a) To raise the elevator at 35.0 cm/s, the disk must turn at approximately 0.044 rpm.

b) To accelerate the elevator at 18g, the angular acceleration of the disk must be approximately 141.4 rad/s^2.

c) The angle through which the disk has turned when it has raised the elevator 2.55 m between floors is approximately 2.04 radians.

To find the rpm of the disk required to raise the elevator at a speed of 35.0 cm/s, we can start by finding the speed at which the cable is moving over the disk. The circumference of the disk is

C = πd = π(2.50 m) = 7.85 m

The distance traveled by the cable in one revolution of the disk is equal to the circumference of the disk. Therefore, the speed of the cable is

v = C × rpm

To find the rpm required to raise the elevator at 35.0 cm/s, we can solve for rpm

35.0 cm/s = 0.35 m/s

0.35 m/s = 7.85 m × rpm

rpm = 0.35 m/s ÷ 7.85 m = 0.044 rpm

Therefore, the disk must turn at approximately 0.044 rpm to raise the elevator at a speed of 35.0 cm/s.

To accelerate the elevator at 18g, we need to find the force required:

F = ma = (18g)(m)

where m is the mass of the elevator. We can rearrange this equation to solve for m

m = F ÷ (18g)

To find the angular acceleration of the disk required to accelerate the elevator, we can use the equation

α = a ÷ r

where α is the angular acceleration, a is the linear acceleration, and r is the radius of the disk. The radius of the disk is half the diameter, or 1.25 m.

α = (18g) ÷ (1.25 m)

α ≈ 141.4 rad/s^2

Therefore, the angular acceleration of the disk must be approximately 141.4 rad/s^2 to accelerate the elevator at 18g.

To find the angle through which the disk has turned when it has raised the elevator 2.55 m between floors, we can use the equation

θ = s ÷ r

where θ is the angle in radians, s is the distance traveled by the cable, and r is the radius of the disk.

The distance traveled by the cable is equal to the difference in height between the floors, or 2.55 m.

θ = 2.55 m ÷ 1.25 m

θ ≈ 2.04 radians

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The given function is given as:

C()=10+14-0.028i

Here, C() is the temperature of the bottle of water at i minutes after being placed in the cooler.

Lena wants to drink the water when it reaches a temperature of 21 degrees Celsius. So, we need to find out how many minutes should Lena leave it in the cooler. Let's put the value of C() in the given function 21 = 10 + 14 - 0.028i 0.028i = 14 - 10 + 21 0.028i = 25 i = 25/0.028 i ≈ 892.857 We get i ≈ 892.857.

This means Lena should leave the bottle of water in the cooler for about 892.857 minutes to reach the temperature of 21°C. So, she should leave it in the cooler for 892.9 minutes (rounded to the nearest tenth). Hence, the answer is 892.9 minutes.

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This question involves the concepts of Newton's Second Law of Motion.

The acceleration of the bowling ball will be "0.67 m/s²".

According to Newton's Second Law of Motion, when an unbalanced force is applied on an object, it produces an acceleration in it, in the direction of the applied force. This acceleration is directly proportional to the force applied and inversely proportional to the mass of the object. Mathematically,

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

where,

Therefore,

\(a=\frac{6\ N}{9\ kg}\)

a = 0.67 m/s²

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Safety symbols, danger symbols, or safety labels are graphical symbols that warn of or indicate hazards linked with an area or object. Images, pictograms, forms, words, phrases, sentences, or statements placed on walls, boards, buildings, doors, entrances, machinery, equipment, tools, transportation, roadways, or any other visible location are examples of safety symbols. The symbol alerts people to the presence of hazardous products or substances, as well as a hazardous environment, and warns them on how to stay safe or the potential repercussions if not avoided.

The given symbol means hammer.

A hammer is a hand tool that consists of a weighted "head" attached to a long handle and swung to produce an impact to a limited region of an item. This may be used to drive nails into wood, shape metal, or crush rock.

While all of these hammers have a round head for driving nails, the claw end may be used for prying, splitting wood, ripping drywall, and other minor demolition chores. A claw hammer's claw is curved, whereas a framing hammer's claw is straight. These hammers are ideal for the following tasks: woodworking

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Answer: 2934.75 Joules

Explanation:

Potential energy can be defined as energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

P.E = mgh

Where P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per second square.

h represents the height measured in meters.

Given the following data;

Weight =645

Height = 4.55

P.E = mgh

But we know that weight = mg = 645N

Substituting into the equation, we have;

P.E = 645 • 4.55

P.E = 2934.75J

Potential energy, P.E = 2934.75 Joules.

Answer:

100.390407

Explanation:

To find acceleration, you would use the formula a=f/m (acceleration equals force divided by mass) and then once you enter those numbers in the formula, a=180/1.793. Then you divide 180 divided by 1.793 which gets you an answer of 100.390407.

Answer:

it A.

Explanation:

did the test on Edmentum and got it right

Answer:

2 lol

Explanation:

1. Five major external forces that affect organizations are economic, social, cultural, demographic, and technological. Economic factors such as inflation and interest rates can impact a company's profitability and purchasing power. Social factors like changing consumer preferences and lifestyles can influence demand for products and services.

Cultural factors like values and beliefs can shape consumer behavior and market trends. Demographic factors such as population size and age distribution can affect target markets.

Technological factors like advancements in automation or digitalization can disrupt industries and create new opportunities. These external forces shape the business environment and organizations must monitor and adapt to them to stay competitive.

2. Gathering competitive intelligence is crucial for businesses because it provides valuable insights about their competitors' strategies, strengths, weaknesses, and market position.

By understanding the competitive landscape, businesses can identify opportunities and threats, make informed decisions, and develop effective strategies.

Competitive intelligence helps businesses stay ahead of their competitors, anticipate market trends, identify emerging technologies, and improve their own products or services. It allows businesses to benchmark their performance, evaluate their competitive advantage, and identify areas for improvement.

Ultimately, gathering competitive intelligence empowers businesses to make proactive and strategic decisions that can lead to sustainable growth and competitive advantage.

3. In business, various economic variables need to be monitored as they have significant impacts on strategy applications. Some important economic variables include GDP (Gross Domestic Product), inflation rate, exchange rates, interest rates, consumer spending, unemployment rate, and industry-specific factors like raw material prices or energy costs.

Monitoring these variables helps businesses understand the overall economic conditions, identify market opportunities, and assess potential risks. For example, a high inflation rate may impact pricing strategies, while a favorable exchange rate can benefit export-oriented businesses.

By monitoring economic variables, businesses can adapt their strategies accordingly and make informed decisions to navigate the dynamic business environment.

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