4. Draw conclusions: What is the minimum energy required to break the egg?
.

Answer:

a spring scale

Explanation:

i think it is correct

The statement that best describes the relative stability of the nuclides is "Nuclide B is less stable and is more likely to undergo radioactive decay".

option D is the correct answer.

A nucleus is stable if it cannot be transformed into another configuration without adding energy from the outside.

The two main factors that determine nuclear stability are the neutron-proton ratio and the total number of nucleons in the nucleus.

The nucleus of an atom is unstable if the neutron-proton ratio is less than 1:1 or greater than 1.5.

From the information we can conclude the following;

Radioactive decay is a spontaneous disintegration of unstable nucleus of an atom.

Thus, the nuclide with less stability will undergo radioactive decay and option D is the correct answer.

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mvr³  is the angular momentum of the hoop about its center of mass

L=mvr=Iω

L= angular momentum

m= mass

v=velocity

r= radius

L=mvr

L=mr²×r×v

L=mvr³

A characteristic known as angular momentum describes the rotating inertia of an item or set of objects when they are moving along an axis that may or may not pass through them. The Earth possesses spin angular momentum from its daily rotation around its axis and orbital angular momentum from its yearly revolution around the Sun. Since angular momentum is a vector quantity, its full representation calls for the identification of both a magnitude and a direction. An object in orbit has an angular momentum that is proportional to its linear momentum times the perpendicular distance r from the center of rotation to a line drawn through the center of gravity of the object, or just mvr.

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The final velocity of the mosquito if it was accelerating from rest at a rate of 0.15 m/s² and flew for 12 meters, is 1.8 m/s

velocity is a term used to describe how quickly and in what direction a point is moving. A point always moves in a direction that is perpendicular to its path; in the case of a circular path, for instance, its direction is always perpendicular to a line connecting the point to the circle's centre (a radius).

The speed at which a point is moving along a path is measured by the magnitude of the velocity.

When a point moves a specific distance along its path in a predetermined amount of time, the distance travelled divided by the time required represents the point's average speed during that time. For instance, the average speed of a train travelling 100 km in two hours is 50 km/h.

The formula for final velocity is

v² - u² = 2as

where v is the final velocity,

u is initial velocity,

a the acceleration and

s the distance

Assuming initial velocity to be 0

Substituting the values

v² - (0)² = 2(0.15)(12)

v = 1.8

So, The final velocity of the mosquito if it was accelerating from rest at a rate of 0.15 m/s² and flew for 12 meters, is 1.8 m/s.

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In a DC generator, the generated electromotive force (emf) is directly proportional to the rotational speed of the generator's armature and the strength of the magnetic field within the generator.

This relationship is described by the equation for the generated emf in a DC generator:

Emf = Φ * N * A * Z / 60

Where:

Emf is the generated electromotive force (in volts),

Φ is the magnetic flux density (in Weber/meter^2\(meter^2\) or Tesla),

N is the number of turns in the armature winding,

A is the effective area of the armature coil (in square meters),

Z is the total number of armature conductors, and

60 is a constant representing the conversion from seconds to minutes.

From this equation, we can see that the generated emf is directly proportional to the magnetic flux density (Φ) and the product of the number of turns (N), effective area (A), and the total number of armature conductors (Z). This means that increasing any of these factors will result in a higher generated emf.

The magnetic flux density (Φ) can be increased by using stronger permanent magnets or increasing the strength of the field windings in the generator.

The number of turns (N) and the effective area (A) are design parameters and can be optimized for a specific generator. Increasing the number of turns or the effective area will result in a higher generated emf.

Similarly, the total number of armature conductors (Z) can be increased to enhance the generated emf.

By controlling and optimizing these factors, the generated emf in a DC generator can be increased, resulting in higher electrical output. However, it is important to note that there are practical limits to these factors based on the design and construction of the generator.

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The wavelength of the standing wave in the string is 0.144 m.

The wavelength of the standing wave in the string is 0.144 m. This can be calculated by using the formula λ = v / f, where λ is the wavelength, v is the speed of the wave, and f is the frequency of the wave.

In this case, the speed of the wave is the speed of sound in the string, and the frequency is 500 Hz. Thus, λ = (340 m/s) / (500 Hz) = 0.144 m.

Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or through a material medium. Wavelength is a measure of the frequency of the wave, and is related to its energy and velocity.

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Answer:

true

Explication:

The acceleration of an object depends on the mass of the object, and the amount of force applied

Answer:

Yes becacuse it will never run out. The sun is there and it soakes the light up to create energy Solar is a renewable resourse.

Answer:

0.0552 m/s²

Explanation:

Given:

Δx = 69.0 m

v₀ = 0 m/s

t = 50 s

Find: a

Δx = v₀ t + ½ at²

69.0 m = (0 m/s) (50 s) + ½ a (50 s)²

a = 0.0552 m/s²

Between 750 AD and 1500 AD, numerous changes took place in political, religious, cultural, economic, technological, and social spheres.

Feudalism emerged as a dominant political system, while the spread of Islam and the Protestant Reformation reshaped religious landscapes.

The European Renaissance sparked a cultural revival, and advancements in trade networks and the rise of merchant classes drove economic growth.

Technological innovations such as the printing press and navigational tools transformed communication and exploration. Societal structures evolved with the rise of feudalism, urbanization, and the impact of the Black Death. Overall, this period witnessed significant shifts that shaped the course of history.

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Write about the different changes that  took place between 750 AD and 1500 AD

The dragonfly must generate approximately 4.8 × 10^-4 Joules of energy to spin itself at a rate of 1100 rpm.

Start by converting the rotational speed from rpm (revolutions per minute) to rad/s (radians per second). Since 1 revolution is equal to 2π radians, we can use the conversion factor:

Angular speed (ω) = (1100 rpm) × (2π rad/1 min) × (1 min/60 s)

ω ≈ 115.28 rad/s

The moment of inertia (I) is given as 2.0 × 10^-7 kg⋅m².

Use the formula for rotational kinetic energy:

Rotational Kinetic Energy (KE_rot) = (1/2) I ω²

Substituting the given values:

KE_rot = (1/2) × (2.0 × 10^-7 kg⋅m²) × (115.28 rad/s)²

Calculate the value inside the parentheses:

KE_rot ≈ (1/2) × (2.0 × 10^-7 kg⋅m²) × (13274.28 rad²/s²)

KE_rot ≈ 1.331 × 10^-3 J

Round the result to the proper number of significant figures, which in this case is three, as indicated by the given moment of inertia.

KE_rot ≈ 4.8 × 10^-4 J

Therefore, the dragonfly must generate approximately 4.8 × 10^-4 Joules of energy to spin itself at a rate of 1100 rpm.

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Answer:

Actually, it is not a force. It is a velocity attained by the bodies hence escaping through the gravitational field.

This velocity is called escape velocity.

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Answer:

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun. Weight is a measure of the force of gravity pulling down on an object. It depends on the object's mass and the acceleration due to gravity, which is 9.8 m/s2 on Earth. The gravitational force between two bodies is directly proportional to the product of the masses of those bodies and is inversely proportional to the square of the distance between them.

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The internal force is -128.06N  and the bending moment is -96.67N.m.

ΔDAB/tan∝= a+l/k1+k2=21+28/22+20

∝=49.39

ΔDEH

cos(90-∝)=DH/DE

sin49.3=21/DE

DE=27.65

tan∝=EI/ID

tan49.3=21/ID

ID=18

cos∝=h1+h2/BD

BD=64.53

GI=h1-ID=22-18=4

tanβ=IG/IE=4/21

β=10.7

Fx=Rxsin∝=Rycos∝-Tcos∝-196.7cos∝=0--------------i

Fy=-Rxcos∝+Rysin∝+Tsinβ-196.7sin∝=0---------------ii

and

-Tsinβ27.65/100+196.78sin∝64.53/100+68.67=0

T=3197.35N

Solving equation i and ii we find that

Rx=2774.64N

Ry=1786.66N

A=-Rxsin∝-Rycos∝+Tcosβ

=-128.06

M=-(Rxcos∝)xx+(Rysin∝)x+Tsinβ(x-27.65)

=-96.67N.m

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Complete question should be:

A folding tray mechanism is attached to a wall. Find the internal force and bending moment. When the force F=185N is applied at an angle of 15 degree.

Answer:

to adjust from distant to the near objects

Explanation:

Answer:

The ability of eye lens to change the focal length of eye lens is called accommodation power of eye.

Explanation:

The human eye is the optical instrument which works on the refraction of light.

The ability of eye lens to change its focal length is called accommodation power of eye.

The focal length of eye lens is changed by the action of ciliary muscles.

When the ciliary muscles are relaxed then the thickness of lens is more and thus the focal length is small. When the ciliary muscles is stretched, the lens is thin and then the focal length is large.

The mass of the object is approximately 0.457 kg.

The mass of the object attached to the trolley can be calculated using the principle of conservation of momentum. Since the two trolleys couple together and move as a single system after the collision, the total momentum before and after the collision should be the same. Given the mass of one trolley is 0.80 kg and the initial speed is 1.1 m/s, the momentum before the collision is 0.80 kg * 1.1 m/s = 0.88 kg·m/s. After the collision, the total mass is the sum of the two trolleys, and the final speed is 0.70 m/s.

Using the momentum equation, the mass of the object can be calculated as follows:

Total momentum before collision = Total momentum after collision

0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s

Solving for the mass of the object, we get:

0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s

0.88 kg·m/s = 0.56 kg + 0.70 kg * mass of the object

0.88 kg·m/s - 0.56 kg = 0.70 kg * mass of the object

0.32 kg = 0.70 kg * mass of the object

Dividing both sides by 0.70 kg, we find:

mass of the object = 0.32 kg / 0.70 kg = 0.457 kg

The two trolleys collide and couple together, the total momentum before the collision is equal to the total momentum after the collision according to the principle of conservation of momentum.

The momentum of an object is defined as the product of its mass and velocity. In this case, the mass of one trolley is known (0.80 kg) and the initial speed is given (1.1 m/s), allowing us to calculate the momentum before the collision.

After the collision, the two trolleys move together at a new speed (0.70 m/s). By setting the initial momentum equal to the final momentum and solving for the unknown mass of the object, we can find its value.

In the calculation, we subtract the masses of the two trolleys from the total mass in order to isolate the mass of the object.

Dividing the difference in momentum by the product of the known mass and the new speed, we obtain the mass of the object. In this case, the mass of the object is approximately 0.457 kg.

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Answer:

The energy that is changing during a phase change is potential energy. During a phase change, the heat added (PE increases) or released (PE decreases) will allow the molecules to move apart or come together. Heat absorbed causes the molecules to move farther apart by overcoming the intermolecular forces of attraction.

If the cloud is transparent, milky, thin layers, rain within the next 2 hours, then the cloud you are seeing is most likely a type of altocumulus cloud.

Altocumulus clouds are generally characterized by their white or gray color, and can sometimes appear milky or translucent. They often form in layers, and can be thin or thick depending on the conditions.

Altocumulus clouds are typically found at medium altitudes, between 6,500 and 20,000 feet and are often associated with unsettled weather conditions.

While they don't necessarily indicate that rain is imminent, altocumulus clouds can be a sign that a change in the weather is on the way.

Thus, if it is likely to rain in the next 2 hours, then the cloud must be altocumulus clouds.

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Answer: Topsoil

Explanation:

Bio

Answer:

topsoil

Explanation:

Answer:

D

Explanation:

Breach of warranty generally alludes to the disappointment of a dealer or supplier to satisfy the conditions of a guarantee, or portrayal, made during the contracting system. Such terms can cover an expansive range of issues going, for instance, from justifying that medical care rehearses have agreed with wellbeing and security and other guideline; to justifying that a property doesn't contain asbestos; to going into an agreement that says the gathering organization being gained isn't the subject of any prosecution.

The law expects that contracting gatherings can and should remain behind these (guarantees and portrayals). It accordingly follows that there is legitimate plan of action under agreement as well as misdeed for break of guarantees and deception.

A prototype is the best example or representation of a concept, which is used as a design to shape a device.

A prototype can be defined as a given design in its experimental stage which is very useful to shape the framework or idea to carry out.

Therefore, with this data, we can see that a prototype can be very useful to shape an idea or concept about a given device in particular.

Complete question:

Fill in the blank. A _____ is the best example or representation of a concept.

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The gravity at 380 km above the surface is, 86.42% weaker.

In order to calculate the distance from the center of the planet, the radius of the Earth will be added with the given distance above the Earth’s surface.

The relation of acceleration due to gravity is given by,

\(g= \dfrac{Gm}{R^2}\)

Here, G is the gravitational constant, m is the mass of the Earth, R is the distance from the center of the planet.

On plugging the values in the above relation.

\(g= \dfrac{6.67\times 10^{-11} \times 5.98 \times 10^{24}}{(6.38 \times 10^6 + 380000)^2}\)

The value of g at 380 km above earth surface is, 8.74.

The value of g at surface is 9.8.

The percentage difference = 8.74/9.8

= 0.86%

The gravity is, 86.42% weaker.

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Answer:

T = 2.57 s

Explanation:

The period of a wave is equal to the time it takes for one wavelength to pass by a fixed point.

No of waves observed = 10.9

Time taken, t = 28 s

We need to find the period of the water waves. Number of waves per unit time is called frequency. Let it is f. So,

\(f=\dfrac{n}{t}\\\\f=\dfrac{10.9}{28}\\\\f=0.389\ Hz\)

If T is period of the wave. It is equal to the reciprocal of frequency.

\(T=\dfrac{1}{f}\\\\T=\dfrac{1}{0.389}\\\\T=2.57\ s\)

So, the period of the water waves is 2.57 seconds.

Hi there!

We can begin by using the work-energy theorem in regards to an oscillating spring system.

Total Mechanical Energy = Kinetic Energy + Potential Energy

For a spring:

\(\text{Total ME} = \frac{1}{2}kA^2\\\\\text{KE} = \frac{1}{2}mv^2\\\\PE = \frac{1}{2}kx^2\)

A = amplitude (m)

k = Spring constant (N/m)

x = displacement from equilibrium (m)

m = mass (kg)

We aren't given the mass, so we can solve for kinetic energy by rearranging the equation:

ME = KE + PE

ME - PE = KE

Thus:

\(KE = \frac{1}{2}kA^2 - \frac{1}{2}kx^2\\\\\)

Plug in the given values:

\(KE = \frac{1}{2}(20)(0.3^2) - \frac{1}{2}(20)(0.3^2) = \boxed{0 \text{ J}}\)

We can also justify this because when the mass is at the amplitude, the acceleration is at its maximum, but its instantaneous velocity is 0 m/s.

Thus, the object would have no kinetic energy since KE = 1/2mv².

Answer:

Explanation:

To find the resultant of two velocity vectors, we can use vector addition. Given two velocity vectors v1 and v2, their resultant vector vR can be found by adding the two vectors:

vR = v1 + v2

The angle that the resultant moves with the first vector can be found using trigonometry. If we let theta be the angle between v1 and vR, then we can use the following formula:

tan(theta) = (vR_y / vR_x)

where vR_x is the x-component of the resultant vector and vR_y is the y-component of the resultant vector.

Alternatively, we can use the dot product to find the angle between the two vectors. The dot product of two vectors is defined as:

v1 . v2 = |v1| |v2| cos(theta)

where |v1| and |v2| are the magnitudes of the vectors and theta is the angle between them. Solving for theta, we get:

theta = acos((v1 . v2) / (|v1| |v2|))

where acos is the inverse cosine function.

To summarize:

Find the resultant vector vR by adding the two velocity vectors v1 and v2: vR = v1 + v2

Find the angle theta between v1 and vR using either the tangent formula or the dot product formula:

a. tan(theta) = (vR_y / vR_x)

b. theta = acos((v1 . v2) / (|v1| |v2|))

Answer:

V = a t      velocity after time t

t = 33.1 / 9.80 = 3.38 sec   (time ball had been falling)

S = 1/2 a t^2 = 55.9 m

So the ball had been falling  for 7 * 8 = 56 m  

The child was 7 floors from the top

Since he was on the eight floor the floors below him were

7 * 8 + 12 = 68 m     total floors below child

68 + 56 = 124 m      total height of building

Total floors in building = 7 + 7 + 1 = 15 floors

PE at top = KE at bottom

KE = m g h = .125 * 9.80 * 124 = 152 Joules

The assertion that ocean waves move on the water's surface is accurate. Therefore, choice A is right.

A wind wave, water wave, or tornado water wave is a surface wave that develops on a body of water's free surface as a result of the air flowing over the ocean's surface. The fetch is the distance at which two objects come into touch when facing the wind.

The wind is the most frequent source of waves. The friction between the wind and the surface of the water produces wind-driven waves, also known as surface waves. A wave crest is produced when wind continuously disturbs the water's surface in an ocean or lake.

The statements about ocean waves a true will be they travel on the surface of the water.

Thus, option A is correct.

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Option A is the correct answer .

What is Length ?

Length is a term used to describe the distance between two points on an object or the dimension of an object along a particular axis.  Length is usually measured in units of distance, such as meters, centimeters, inches, or feet .

In physics, length is an important concept used to describe the size of objects, the distance between two points, or the dimensions of a space. In engineering and construction, length is used to design and build structures, such as bridges and buildings, to ensure they are safe and fit for their intended purpose.

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there is weak attraction between particles when the matter is a LIQUID.