Consider the diagram of a pendulum's motion shown above. A pendulum can be used to model the change from potential energy
to kinetic energy and back to potential energy. Locate the place in the diagram where kinetic energy is the greatest.
A.point A
B.point B
C.point c
D.both points A and B

Momentum = m • v

Original momentum = m • 10 m/s north

Final momentum = m • 15 m/s north

Change = m • (15 - 10) m/s north

Change = m • +5 m/s north

Change = +60 kg-m/s north

Explanation:

CON EL TEOREMA DE PITÁGORAS

v = \(\sqrt{(12 km/h)^{2} + (25 km/h)^{2}}\) = 27.7 km/h

Thermal system is used on some electric and hybrid vehicles to cool the power electronics and charger modules.

What is thermal system?

An isolated system has no interaction with the rest of the physical universe, a closed system can only exchange heat and work, and an open system can also exchange mass. In thermodynamics, a system is the portion of the physical universe that the observer chooses to analyse separately from the rest.

A thermal system, on the other hand, is a complex assembly of coupled components, some of which are thermal, that exhibits a common structured behavior  for instance, a refrigerator consists of pipes, a compressor, an electric motor, heat exchangers, valves, insulation, a casing, doors, a lamp, and other components that interact to achieve the internal goal of producing cold.

The interior space or the refrigerant are thermodynamic systems, whereas a refrigerator is a thermal system. While large thermal systems, like a refrigerated store, are constructed on the job site, small thermal systems, like a refrigerator, typically come fully installed from the manufacturer (although a straightforward split-air-conditioning system needs installation). Thermal systems often require services such as fuel supply, flue stack, water intake and exit, air intake and exit, and electrical supply (for power or at least for control).

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Explanation:

for v vs t graph for t=9 to 11,v=15kmph

similarly v2=0,v3=60kmph&v4= -40kmph

Answer:

C. sedimentary

Explanation:

Answer:

Sedimentary

Explanation:

Igneous rock- A rock that's formed through the cooling and solidification of magma or lava.

Metamorphic rock- A rock that starts out as another rock and often has a striped appearance.

Volcanic rock- A rock that's formed from lava that erupted from a volcano.

Sedimentary is the only right answer. A Sedimentary rock is a rock thats made from the deposition of lots of pieces of eroded rock particles.

Answer:

u breathe lol nice ok bro

This is a hypoeutectoid alloy because the mass fraction of carbon is less than the eutectoid composition of 0.8%.

What is hypoeutectoid?
The ductility of the eutectoid alloy has decreased by the a factor of three, while that of the hypoeutectoid steel has decreased by the a factor of three. The additional, fragile cementite just on pearlite grain boundaries in hyper-eutectoid alloys reduces the alloy's ductility even more. The proeutectoid cementite limits fracture to the fragile grain boundary zone and limits plastic deformation to a ferrite lamellae inside the pearlite. Such alloys must be chosen for their composition to balance such properties to the requirements of the design in order to be used in light-strong structures. Although a front fork on the a bicycle must meet certain requirements, one of those requirements is high toughness, which necessitates tailoring this same carbon content to provide the required ductility.

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Energy stored in inductor = L I^2 /2

30 J  = (8 H) I^2 / 2

the current in the inductor is:

 current (I) = 2.74 A.

Energy is the quantitative property that is transferred to a body or to a bodily system, recognizable withinside the overall performance of work and withinside the shape of heat and light.

Energy is a conserved quantity—the regulation of conservation of power states that power can be converted in shape, however now no longer created or destroyed. The unit of measurement for power withinside the International System of Units (SI) is the joule (J).

Common sorts of energy consist of the kinetic power of a shifting object, the capability power saved through an object (for example because of its function in a field), the elastic power saved in a strong object, chemical power related to chemical reactions, the radiant power carried through electromagnetic radiation, and the inner power contained inside a thermodynamic system. All living organisms continuously absorb and launch power.

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The energy required to escape an orbit is dependent on the mass of the object and the velocity at which it orbits.

Therefore, the mass that would require the most energy to escape from its orbit is the one with the greatest mass and the fastest velocity.

In this case, we know that there are five masses orbiting a central mass. Assuming that they are all at the same distance from the central mass, the mass that would require the most energy to escape its orbit would be the one with the greatest mass.

This is because the gravitational force between two masses is proportional to the product of their masses. The greater the mass of an object, the greater the gravitational force it exerts on other objects.

Therefore, the object with the greatest mass would require the most energy to overcome its gravitational pull and escape its orbit.

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The object is 15 cm in front of a converging lens of focal length 10 cm. The image is C. virtual and smaller than the object.

The given problem is based on the concept of optics, lens and image formation. For a converging lens (also called a convex lens), the focal length is always positive. As per the given question, the object distance is given as 15 cm and the focal length is given as 10 cm.The formula for image distance is given by:1/image distance = 1/focal length - 1/object distancePutting the given values in the above formula, we get1/image distance = 1/10 - 1/15= (3 - 2)/30= 1/30Therefore, the image distance is 30 cm.Using the lens formula, we can find the type of image that is formed. For a converging lens, the image is virtual and smaller than the object if the object distance is less than the focal length. Hence, the correct option is C.

a lens that produces a real image by converting parallel light rays into convergent light rays. However long the item is beyond the point of convergence the picture is genuine and upset. The image becomes virtual and upright when the object is within the focal point.

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At a temperature of 2,231 degrees Celsius, the light bulb filament emits 55.8 watts of blackbody radiation.

Using the Stefan-Boltzmann law, we can determine the power emitted at 3,073 degrees Celsius:

P = σA(T^4)

Where P is the power emitted, σ is the Stefan-Boltzmann constant (5.67 x 10^-8 W/m^2*K^4), A is the surface area of the filament, and T is the absolute temperature.

Assuming the surface area of the filament remains constant, we can set up a proportion:

(P1)/(T1^4) = (P2)/(T2^4)

Substituting in the values we know:

(55.8)/(2504^4) = (P2)/(3346^4)

Solving for P2:

P2 = (55.8 x 3346^4)/(2504^4) = 214.4 watts

Therefore, if the temperature is raised to 3,073 degrees Celsius, the light bulb filament will radiate approximately 214.4 watts of blackbody radiation.
To solve this problem, we'll use the Stefan-Boltzmann Law, which states that the power radiated by a blackbody (like a light bulb filament) is proportional to the fourth power of its temperature in Kelvin. Here are the steps to find the power at the new temperature:

1. Convert the initial and final temperatures from Celsius to Kelvin:
  T1 = 2,231°C + 273.15 = 2,504.15 K
  T2 = 3,073°C + 273.15 = 3,346.15 K

2. Find the ratio of the temperatures raised to the fourth power:
  (T2/T1)^4 = (3,346.15/2,504.15)^4 ≈ 3.787

3. Multiply the initial power by the temperature ratio to find the new power:
  P2 = P1 * (T2/T1)^4
  P2 = 55.8 W * 3.787 ≈ 211.383 W

4. Round the answer to the nearest watt:
  P2 ≈ 211 W

So, the light bulb filament will radiate approximately 211 watts when its temperature is raised to 3,073 degrees Celsius.

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The mass-to-charge ratio (m/q) is  = 2*V/B₀²

Based on the information provided, we can determine the value of m/q (mass-to-charge ratio) using the experimentally measured quantities.

When a particle enters a uniform magnetic field (B₀) and travels in a circle of radius (r), the centripetal force acting on the particle is balanced by the magnetic force.

The centripetal force is given by \(F_{c}\) = m*v²/r, where m is the mass and v is the velocity of the particle. The magnetic force is given by \(F_{c}\) = q*v*B₀, where q is the charge of the particle.

By equating these two forces, we get:

m*v²/r = q*v*B₀

Dividing both sides by v, we get:

m*v/r = q*B₀

Now, we need to express v in terms of the applied voltage (V). The kinetic energy gained by the particle is equal to the work done by the electric field, which is:

(1/2)*m*v² = q*V

Solving for v, we get:

v = (\(\sqrt{2*q*V/m}\))

Substituting this expression for v in the previous equation:

m*(\(\sqrt{2*q*V/m}\)))/r = q*B₀

Solving for m/q, we get:

m/q = (2*V*r²)/(B₀²*r) = 2*V/B₀²

So, the mass-to-charge ratio (m/q) is given by:

m/q = 2*V/B₀²

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Answer:

(a)  v = 0 m/s

(b)  v = 6 m/s

(c)  6 m

(d)  a = 0 m/s²

(e)  a = 0.75 m/s²

Explanation:

A velocity-time graph shows the velocity (speed) and direction an object travels over a specific period of time.

A horizontal line means constant velocity.

When v = 0 m/s, the object is at rest.

Acceleration is the slope of the line. (A positive slope is acceleration, and a negative slope is deceleration).

Displacement (distance traveled) is the area under the graph.

Part (a)

The object's initial velocity is when t = 0 s.

Therefore, from inspection of the graph, the initial velocity is:

Part (b)

The object's final velocity is when t = 8 s.

Therefore, from inspection of the graph, the final velocity is:

Part (c)

To calculate the displacement of the object from t = 0 s to t = 2 s, find the area under the graph between those times.

The area is a triangle with base 2 and height 3.  Therefore, using the area of a triangle formula:

Part (d)

The line between t = 2 s and t = 4 s is horizontal.  Therefore, the velocity between these times is constant and so the acceleration of the object is zero:

Part (e)

To calculate the acceleration of the object from t = 4 s to t = 8 s, find the slope of the line between these two points:

\(\implies \textsf{slope}=\dfrac{\textsf{change in $y$}}{\textsf{change in $x$}}=\sf \dfrac{6-3}{8-4}=\dfrac{3}{4}=0.75\)

Therefore, the acceleration of the object from t = 4 s to t = 8 s is:

Radio waves are most likely to be non-ionizing radiation.

Electromagnetic radiation can be classified into ionizing or non-ionizing radiation, depending on its ability to ionize atoms or molecules in its path. Ionizing radiation has enough energy to remove electrons from atoms or molecules, while non-ionizing radiation lacks sufficient energy to do so.

Radio waves have the lowest frequency and energy among the different types of electromagnetic radiation in the electromagnetic spectrum. They have a wavelength range of 1 millimeter to 100 kilometers, and their energy is typically below 10^-4 electron volts, which is not enough to ionize atoms or molecules. As a result, radio waves are classified as non-ionizing radiation.

On the other hand, ultraviolet, X-rays, and gamma rays have higher frequencies and energies than radio waves and are classified as ionizing radiation. Ultraviolet radiation has enough energy to ionize atoms or molecules in the air, causing sunburn and other skin damage. X-rays and gamma rays have enough energy to penetrate through materials, including human tissues, and can cause cellular damage or mutations if exposure occurs.

In summary, radio waves are non-ionizing radiation, while ultraviolet, X-rays, and gamma rays are ionizing radiation.

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ANSWER

False.

EXPLANATION

In radioactive decay (or nuclei decay), an unstable nucleus emits radiation into a nucleus that is table and has less energy and a lower mass.

Therefore, nuclei decay from a less stable form to a more stable form.

The answer is false.

Answer: decrease in current, power loss, and voltage drop

Answer:

Explanation:

lll

Answer:

Unbalanced

Explanation:

Hussein is pushing 2 N harder.

If the lead can be extracted with 92.5 efficiency, the mass of ore is required to make a lead sphere with a 7.00 cm radius is 17.707 kg.

To find the mass of ore, the given values are,

The radius of the lead sphere is r = 7.0 cm,

The lead can be extracted with, η = 92.5% = 0.925 efficiency.

Density is the substance's mass per unit of volume.

We know the density of lead as,

⇒ p = 11.4 g/cm³ .

The volume of the lead sphere is,

V = 4/3πr³

   = 4/3π(7)³

V = 1436.7 cm³.

Mass of the lead present in the lead sphere is,

m = p . V

    = 11.4  × 1436.7

    = 16379 g

m = 16.379 kg

From the expression of efficiency, we calculate the mass of the ore,

η = Mass of lead obtained / Mass of the ore to be taken

0.925 = 16.379 kg / Mass of the ore to be taken

Mass of the ore to be taken = 17.707 kg

If the lead can be extracted with 92.5 efficiency, the mass of ore is required to make a lead sphere with a 7.00 cm radius is 17.707 kg.

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(A) The pressure transients at the mid-point of the pipeline are approximately 1,208,277 Pa.
(B) Friction in the pipeline affects the calculated pressure transients by increasing the overall resistance to flow

(a) The pressure transients at the mid-point of the pipeline can be calculated using the water hammer equation. Water hammer refers to the sudden changes in pressure and flow rate that occur when there are rapid variations in fluid flow. The equation is given by:

ΔP = (ρ × ΔV × c) / A

Where:

ΔP = Pressure change

ρ = Density of water

ΔV = Change in velocity

c = Wave speed

A = Cross-sectional area of the pipe

First, let's calculate the change in velocity:

ΔV = Q / A

Q = Flow rate = 0.12 m/s

A = π × ((d/2)^2 - ((d-2t)/2)^2)

d = Internal diameter of the pipe = 300 mm = 0.3 m

t = Pipe wall thickness = 5 mm = 0.005 m

Substituting the values:

A = π × ((0.3/2)^2 - ((0.3-2(0.005))/2)^2

A = π × (0.15^2 - 0.1495^2) = 0.0707 m^2

ΔV = 0.12 / 0.0707 = 1.696 m/s

Next, let's calculate the wave speed:

c = √(E / ρ)

E = Young's modulus of steel = 210x10^9 Pa

ρ = Density of water = 1000 kg/m^3

c = √(210x10^9 / 1000) = 4585.9 m/s

Finally, substituting the values into the water hammer equation:

ΔP = (1000 × 1.696 × 4585.9) / 0.0707 = 1,208,277 Pa

Therefore, the pressure transients at the mid-point of the pipeline are approximately 1,208,277 Pa.

(b) Friction in the pipeline affects the calculated pressure transients by increasing the overall resistance to flow. As water moves through the pipe, it encounters frictional forces between the water and the pipe wall. This friction causes a pressure drop along the length of the pipeline.

The presence of friction results in a higher effective wave speed, which affects the calculation of pressure transients. The actual wave speed in the presence of friction can be higher than the wave speed calculated using the Young's modulus of steel alone. This higher effective wave speed leads to a reduced pressure rise during the transient event.

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The centre of mass of the region is bounded by y=9-x^2 y=5/2x, and the z-axis is (3.5, 33/8). Formulae used to find the centre of mass are as follows:x bar = (1/M)*∫∫∫x*dV, where M is the total mass of the system y bar = (1/M)*∫∫∫y*dVwhere M is the total mass of the system z bar = (1/M)*∫∫∫z*dV, where M is the total mass of the systemThe region bounded by y=9-x^2 and y=5/2x, and the z-axis is shown in the attached figure.

The two curves intersect at (-3, 15/2) and (3, 15/2). Thus, the total mass of the region is given by M = ∫∫ρ*dA, where ρ = density. We can assume ρ = 1 since no density is given.M = ∫[5/2x, 9-x^2]∫[0, x^2+5/2x]dAy bar = (1/M)*∫∫∫y*dVTherefore,y bar = (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]y*dA= (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]ydA...[1].

The limits of integration in the above equation are from 5/2x to 9-x^2 for x and from 0 to x^2+5/2x for y.To evaluate the above integral, we need to swap the order of integration. Therefore,y bar = (1/M)*∫[0, 3]∫[5/2, (9-y)^0.5]y*dxdy...[2].

The limits of integration in the above equation are from 0 to 3 for y and from 5/2 to (9-y)^0.5 for x.Substituting the values and evaluating the integral, we get y bar = (1/M)*[(9-5/2)^2/2 - (9-(15/2))^2/2]= (1/M)*(25/2)...[3].

Also, the x coordinate of the center of mass is given by,x bar = (1/M)*∫∫∫x*dVTherefore,x bar = (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]x*dA= (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]xdA...[4].

The limits of integration in the above equation are from 5/2x to 9-x^2 for x and from 0 to x^2+5/2x for y.To evaluate the above integral, we need to swap the order of integration. Therefore, x bar = (1/M)*∫[0, 3]∫[5/2, (9-y)^0.5]xy*dxdy...[5].

The limits of integration in the above equation are from 0 to 3 for y and from 5/2 to (9-y)^0.5 for x.

Substituting the values and evaluating the integral, we get x bar = (1/M)*[63/8]= (1/M)*(63/8)...[6]Thus, the centre of mass of the region is bounded by y=9-x^2 y=5/2x, and the z-axis is (3.5, 33/8).

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Answer:

a=2 m/s²

Explanation:

v=u+at

25=15 +5a

5a=10

a=2 m/s²

Answer:

mass , velocity

Explanation:

K.E= 1/2 X mv2

Answer:

  A.  35 °C

Explanation:

You want to know which of the temperatures 5, 10, 15, or 35 °C is most favorable to mosquito breeding.

Mosquitos are nonfunctional below 50 °F (10 °C), and are lethargic at 60 °F (15.6 °C). They prefer 29 °C, and their breeding falls off at higher and lower temperatures.

Of the temperature choices offered, mosquitos would breed fastest at 35 °C.

Hope you could understand.

If you have any query, feel free to ask.

The wavelength of a sinusoidal wave is traveling along a rope. the oscillator that generates the wave completes 41.0 vibrations in 31.0 s. a given crest of the wave travels 430 cm along the rope in 15.0 s. wave is 332 cm.

To arrive at this answer, we can start by using the formula: wavelength = speed / frequency.
To find the frequency of the wave, we can use the information given about the oscillator: it completes 41.0 vibrations in 31.0 s. Therefore, the frequency is:
frequency = number of vibrations / time
frequency = 41.0 / 31.0
frequency = 1.32 Hz
Next, we need to find the speed of the wave. To do this, we can use the information about the crest of the wave traveling 430 cm in 15.0 s. The speed is:
speed = distance / time
speed = 430 cm / 15.0 s
speed = 28.7 cm/s
Now we can substitute the frequency and speed into the wavelength formula:
wavelength = speed / frequency
wavelength = 28.7 cm/s / 1.32 Hz
wavelength = 21.75 cm
However, this gives us the distance between two consecutive crests of the wave. To find the distance between two adjacent troughs, we need to double this value:
wavelength = 21.75 cm x 2
wavelength = 43.5 cm
Finally, we need to convert this value from centimeters to meters:
wavelength = 43.5 cm / 100
wavelength = 0.435 m
Therefore, the wavelength of the wave is 0.435 m (or 332 cm).

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Answer:

Because the magnetic field of earth and the atmosphere divert and stop that waves

Answer:c i think

Explanation:

A. Mg + 2HCl →2H2 + MgCl2 (single replacement)

A single replacement reaction is a type of chemical reaction in which one element is replaced by another element from a compound. In a single replacement reaction, an element reacts with a compound to form a new compound, in which one of the elements has been replaced.

For example, in the reaction Mg + 2HCl → 2H2 + MgCl2, the magnesium reacts with the hydrochloric acid to form hydrogen gas and magnesium chloride, with the magnesium taking the place of hydrogen in the compound.

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Well light waves are rays of energy and sound waves are vibrations that tun into sound from our ears.

Hope it helps!

Answer:

get some

get some ⛽⛽⛽⛽⛽

pour the ⛽ on the module,

get that on itttttt and booooooommmm

Explanation:

Answer:

1, 2, and 3

Explanation:

The heat of the solar radiation is absorbed by the atmosphere then the atmosphere re-releases heat, warming Earth’s surface and lower atmosphere. Therefore, option (3), (4) are correct.

The greenhouse effect can be described as a process that happens when energy heats the planet's surface, but greenhouse gases in the atmosphere stop some of the heat from returning directly to space and warm the planet.

The natural greenhouse effect keeps the earth from having the below-freezing temperature that it would freeze if there were no greenhouse gases. Additionally, human activities increase greenhouse gases and trap greater amounts of heat, which cause the Earth to grow warmer over time.

The Sun sends most of its energy as visible and near-infrared light, while Earth's average surface temperature emits longer-wavelength infrared, radiant heat. These greenhouse gases emit radiant heat in all directions, passing heat to the air and warming other greenhouse gases.

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