a rocket, initially at rest in the air, explodes into two fragments, one 25 times heavier than the other. the speed of the lighter fragment is

Answer:

>400N is needed to balance that lever

Answer:

d. zero

Explanation:

Constant velocity means the acceleration is zero. In this case the velocity does not change,

hope this helps you

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The best improvement Becky could make to this experiment to test her hypothesis is to take more sample measurements to get a more accurate speed at each temperature, therefore the correct answer is option C.

Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds.

A method of learning about the world is science.

Option C is the correct response because adding more sample measurements to acquire a more precise speed at each temperature is the greatest way Becky could improve this experiment to test her theory.

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Answer:

earth is 4.54 billion years old

for an organism to survive they would have to change ( mutate )

A mutation is any permenant change in dna of a gene or chromosome

some mutations are bad and some can be good

Explanation:

Normally, materials are electrically neutral because there are equal numbers of positively charged particles and negatively charged particles, hence option D is correct.

Since there are exactly as many electrons in an atom as there are protons, the positive and negative charges "balance out," leaving atoms electrically neutral.

Neutrons are found in the nuclei of all atoms, with the exception of the majority of hydrogen atoms. Neutrons are electrically neutral, as opposed to electrically charged protons and electrons.

Therefore, due to having an equal number of positively charged particles and negatively charged particles materials are electrically neutral.

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Answer:

2m/s

Explanation:

10m / 5 s

Simplify and divide.

2 m / 1 s

Answer:

The speed would be 2

Explanation:

Dragonflies are most closely related to carpenter flies. They are known as flies of the family Odonata, which means "toothed ones."

Odonates are divided into two main groups: dragonflies (Anisoptera) and damselflies (Zygoptera). Dragonflies are characterized by their large wingspans, strong flight muscles, and toothed jaws.

Dragonflies and carpenter flies are the two members of the Odonata family that share a common ancestry. Carpenter flies belong to the family Xylophagidae, which is part of the larger order of true flies, Diptera. They are mostly seen as long-legged, hairy flies with long snouts. Carpenter flies are harmless to humans and feed on nectar, whereas dragonflies are predators that feed on other insects. Their jaws are designed to tear and shred their prey apart. They are able to fly at high speeds and manoeuvre with agility to catch their prey. This ability to fly is due to their powerful flight muscles, which occupy up to 90% of their body weight. They are known for their swift and graceful movements, which make them a fascinating species to study.

In conclusion, dragonflies are most closely related to carpenter flies. This is based on the fact that both species belong to the Odonata family. Carpenter flies are characterized by their long legs and snouts, while dragonflies are characterized by their large wingspans, toothed jaws, and predatory behavior. Dragonflies are known for their incredible agility, speed, and grace, and they are an important part of the ecosystem as predators of other insects.

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Answer:

180 Newton(N)

Explanation:

force =mass *acceleration

=60 * 3

=180 kgm/s^2

=180 N

A substance that prevents free flow of electrical current is known as an electrical insulator. The electrons in the insulator's atoms are securely bonded and immobile.

Protons are in overabundance on an aluminium plate that is positively charged. A positively charged aluminium plate has a deficiency of electrons when viewed from the perspective of electrons. We might characterise each extra proton as being somewhat dissatisfied in terms of people.

The other plate develops an imposed positive charge as a result of the electron's electric field, which pulls on the electrons that are in that plate and repels other electrons.

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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.

the maximum height reached by ball is 0.45m.

Given :-

spring constant ( k ) = 400N/m

mass of ball = 1kg

spring compressed ( x )= 0.150m

we calculate height by using mechanical energy conservation According to the principle of conservation of mechanical energy, The total mechanical energy of a system is conserved .

Mechanical energy is the sum of the potential and kinetic energies in a system :-

K₀ + U₀ = K + U    (eq 1)                    

where,

           K₀ = initial kinetic energy = 0

           U₀ = initial potential energy = \(\frac{1}{2} kx^{2}\)

           K = final kinetic energy when it reaches at its max height =0

           U = final potential energy when it reaches at its max height =mgh

The elastic potential energy is = \(\frac{1}{2} kx^{2}\)

                                                     =  0.5 × 400 × 0.15 × 0.15

                                                     = 4.5 J.  

putting value in eq 1 :-

                                    0 + 4.5 = 0 + mgh

                                     4.5 = 10h

                                      h=0.45m

Thus from the above conclusion we can say that the maximum height reached by the ball is 0.45m.

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Answer:

9.8

Explanation:

distance=vt

1.40*7=distance

Answer:

the question is not correct

Answer:

Four objects are situated along the y axis as follows: a 2.00 kg object is at +3.00 m, a 3.00-kg

object is at +2.50 m, a 2.50-kg object is at the origin, and a 4.00-kg object is at -0.500 m.

Where is the center of mass of these objects

The position function of a particle moving in a straight line with velocity\(\(v(t) = 5t^2 - 8t + 4 \\),\(\mathrm{m/s}\)\)and initial displacement \(\(s(0) = 1 \\),\(\mathrm{m}\)\) is\(\(s(t) = \frac{5}{3}t^3 - 4t^2 + 4t + 1\).\)

Find the position function \(\(s(t)\)\), we need to integrate the velocity function\(\(v(t)\)\) with respect to time. Since the velocity is the derivative of the position function, integrating the velocity will give us the position.

\(\(v(t) = 5t^2 - 8t + 4 \, \mathrm{m/s}\)\)

\(\(s(0) = 1 \, \mathrm{m}\)\)

Find \(\(s(t)\),\) we integrate\(\(v(t)\)\) with respect to \(\(t\)\):

\(\(\int v(t) \, dt = \int (5t^2 - 8t + 4) \, dt\)\)

Integrating term by term:

\(\(\int 5t^2 \, dt - \int 8t \, dt + \int 4 \, dt\)\)

Integrating each term:

\(\(\frac{5}{3}t^3 - 4t^2 + 4t + C\)\)

Where C is the constant of integration.

Now, to determine the constant of integration, we can use the initial displacement\(\(s(0) = 1 \, \mathrm{m}\).\) Plugging in\(\(t = 0\)\)into the position function:

\(\(s(0) = \frac{5}{3}(0)^3 - 4(0)^2 + 4(0) + C\)\)

\(\(1 = 0 + 0 + 0 + C\)\(C = 1\)\)

Therefore, the position function\(\(s(t)\)\) is:

\(\(s(t) = \frac{5}{3}t^3 - 4t^2 + 4t + 1\)\)

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If the Earth were modelled as a spinning vertical cylinder, the temperature distribution would show a pattern of lowering temperatures from the sides (equator) to the top and bottom (poles).

If the Earth were modeled as a vertical cylinder rotating on its axis, we can expect a general distribution of heat that varies with different regions of the cylinder, including the sides, top, and bottom. Here's a description of the possible temperature distribution:

   The sides of the cylinder, representing the Earth's equatorial regions, would generally experience higher temperatures due to their proximity to the Sun. These regions would be characterized by hot or warm temperatures, as they receive more direct sunlight and experience longer durations of daylight.

   The top region of the cylinder, corresponding to the Earth's North Pole or South Pole, would experience cold temperatures. These areas receive oblique sunlight, leading to lower solar radiation and shorter daylight periods. As a result, the temperatures would generally be cold, with icy conditions prevailing.

   The bottom region of the cylinder, corresponding to the opposite pole from the top, would exhibit similar characteristics to the top region. It would also experience cold temperatures due to the oblique sunlight and shorter daylight periods.

Overall, the temperature distribution on the Earth modeled as a rotating vertical cylinder would follow a pattern of decreasing temperatures from the sides (equator) to the top and bottom (poles).

This distribution is influenced by the varying angles at which sunlight reaches different latitudes, leading to variations in solar radiation and daylight duration.

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Answer:

Tstring = 343.35 [N]

Explanation:

Since the block is in equilibrium, we can say that the sum of the forces on the Y-axis or vertical is equal to zero.

∑Fy = 0

\(T_{string}-W=0\)

where:

Tstring = tension of the string [N]

W = weight of the block [N]

And the weight can be calculated multiplying the mass of the block by the gravity acceleration.

Now replacing:

\(T_{string}=m*g\\T_{string}=35*9.81\\T_{string}=343.35[N]\)

Answer:

3333.33 m/s²

Explanation:

From the question given above, the following data were obtained:

Total Velocity (v) = 40 m/s

Total Time (t) = 0.012 s.

Average acceleration (a) =..?

Average acceleration can be defined as follow:

Average acceleration (a) = Total velocity (v) / total time (t)

a = v / t

With the above formula, we can obtain the average acceleration of the ball as shown below:

Total Velocity (v) = 40 m/s

Total Time (t) = 0.012 s.

Average acceleration (a) =..?

a = v / t

a = 40 / 0.012

a = 3333.33 m/s²

Therefore, the average acceleration of the ball is 3333.33 m/s².

Answer:

Explanation:

C. Adding salt to water increases the boiling point and decreases the freezing point.

When the core temperature rises, stars start burning helium to carbon. This rise in temperature is brought on by. creating helium by fusing hydrogen in a shell.

When carbon and helium are combined, oxygen is created. Helium burns to create carbon. The star's surface temperature rises as it develops into a horizontal branch star as its core becomes rich in carbon and oxygen nuclei. When their brilliance remains constant, stars with masses larger than or equal to the Sun shrink and get hotter.

When it becomes heated enough, hydrogen in a shell outside the core can begin to fuse. The exterior is expanding.

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Answer:

26 a weight of 2on stretcges

To determine the focal length of a makeup mirror with a power of 2.48d, we can use the formula: Power = 1 / focal length. Where power is measured in diopters (d) and focal length is measured in meters (m).

So, we can rearrange the formula to solve for focal length:

focal length = 1 / power

Plugging in the given power of 2.48d, we get:

focal length = 1 / 2.48d

To convert diopters to meters, we use the conversion factor of 1/m = 1/d.

So, we can simplify:

focal length = 1 / 2.48d * 1/m

focal length = 0.4032 m

Therefore, the focal length of the makeup mirror is approximately 0.4032 meters.

To find the focal length of a makeup mirror with a power of 2.48 diopters, you'll need to use the formula:

Focal Length (in meters) = 1 / Power (in diopters)

In this case, the power of the makeup mirror is 2.48 diopters. So, to find the focal length, you can follow these steps:

Step 1: Identify the power given in the question, which is 2.48 diopters.
Step 2: Use the formula Focal Length = 1 / Power.
Step 3: Plug the power value into the formula: Focal Length = 1 / 2.48.

After calculating, the focal length of the makeup mirror is approximately 0.403 meters or 40.3 centimeters.

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The angular velocity of the propeller in radians per second is 125.66 rad/s.

To convert revolutions per minute to radians per second, we need to multiply by 2π/60. Therefore:

Angular velocity = (1200 rev/min) x (2π/60) = 125.66 rad/s

So the angular velocity of the propeller is 125.66 rad/s.

The angular velocity is a measure of the rate of rotation of an object. In this case, the propeller is rotating at a high speed of 1200 revolutions per minute, which corresponds to an angular velocity of 125.66 rad/s. This high angular velocity is necessary to provide the necessary thrust for the fighter plane to fly at high speeds and perform various maneuvers.

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Answer:

zero

Explanation:

Because if the object is not in motion then it only posseses potential energy not kinetic energy

The initial speed of the second stone is approximately 14.3 m/s.

To solve this problem, we can use the equations of motion for uniformly accelerated motion. We'll consider the first stone as the reference point, dropped from rest at an initial height (H) of 40.1 meters. We'll denote the time it takes for the second stone to be thrown vertically down after the first stone is dropped as t.

Using the equation for free fall motion, we can find the time it takes for the first stone to reach the water:

H = 0.5gt²

Substituting the given values, we have:

40.1 = 0.5 * 9.8 * t₁²

80.2 = 9.8t₁²

t₁² = 80.2 / 9.8

t₁ ≈ 4.08 s

Now, we know that the second stone is thrown 1.14 seconds after the first stone is dropped, so the time it takes for the second stone to reach the water is:

t₂ = t₁ - 1.14

t₂ ≈ 4.08 - 1.14

t₂ ≈ 2.94 s

Using the equation for uniformly accelerated motion, we can find the initial speed (v) of the second stone:

H = v₀t + 0.5gt²

Substituting the given values and solving for v₀, we get:

0 = v₀ * 2.94 + 0.5 * 9.8 * (2.94)²

v₀ = -0.5 * 9.8 * (2.94)² / 2.94

v₀ ≈ -0.5 * 9.8 * 2.94

v₀ ≈ -14.3 m/s

Since the stone is thrown vertically down, the initial speed will be positive.

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The formula for horizontal distance is x = Vx * t, where t is the time. The formula for vertical distance from the ground is y = h + Vy * t - g * t2 / 2, where g is the acceleration of gravity.

What is the free fall equation?

Where g is the acceleration of gravity, vf is equal to g * t. On Earth, the value of g is 9.8 m/s/s. The velocity of the object after being dropped from rest for any given period of time can be calculated using the aforementioned equation.

How is height determined?

At the spot where the ruler, book, or other flat object meets your head, lightly mark the wall with a pencil. Measure the distance from the floor to the mark on the wall using a tape measure, preferably one made of metal that will stay straight.

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Claudius Ptolemaeus account for the retrograde motion of the by atating that planets move on two sets of circles, a deferent and an epicycle

Aristotle's theory of the universe has trouble explaining several planetary occurrences. Planets also change in brightness or dimness as they move through the sky. Neither phenomenon could be satisfactorily explained by the Aristotelian paradigm. The most important answer to this problem was put out by Claudius Ptolemy in the third century AD.

He asserted that the two sets of circles on which planets orbit are a deferent and an epicycle. The elliptical orbits of the planets around the Earth were kept, and this gave an explanation for retrograde velocity. When this failed, Ptolemy offered a peculiar solution.

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The normal force exerted by the floor on the chair is equal to the chair's weight, which is 250 N. If the chair moves with constant velocity, the magnitude of the frictional force acting on it is also 50 N.

1. The normal force (N) is the force exerted by a surface perpendicular to the surface. In this case, the chair is on a horizontal floor, so the normal force from the floor acting on the chair is equal to the chair's weight. The weight (W) of an object is given by the mass (m) of the object multiplied by the acceleration due to gravity (g). Therefore, W = mg = 25.0 kg * 10 m/\(s^2\) = 250 N. Hence, the normal force exerted by the floor on the chair is 250 N.

2. When the chair moves with constant velocity, it means the net force acting on the chair is zero. The force you apply on the chair is directed at an angle of 30∘ above the horizontal. To determine the frictional force (f) acting on the chair, we need to resolve the applied force into its horizontal and vertical components. The vertical component does not contribute to the friction force since the chair is not moving vertically. The horizontal component of the applied force is F * cos(30∘) = 50 N * cos(30∘) ≈ 43.3 N. Since the chair is moving with constant velocity, the magnitude of the frictional force acting on it is equal to the horizontal component of the applied force, which is approximately 43.3 N.

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Answer:

Monkey Luffy

HW Due

A man jumping out of an airplane experiences two main forces acting on him: gravity and air resistance. Gravity acts vertically downward, pulling the man towards the ground. Air resistance acts horizontally, in the opposite direction of the man's motion, and its magnitude depends on the man's velocity.

As the man falls, his velocity increases, causing the magnitude of air resistance to increase. At some point, air resistance will equal the force of gravity, and the man will reach terminal velocity, the maximum velocity he can reach while falling. At terminal velocity, the net force on the man is zero, so his acceleration is zero and his velocity remains constant.

The diagram for a cyclist travelling at 15 miles per hour would show the force of propulsion acting forward on the cyclist and the force of friction acting in the opposite direction. Propulsion is the force that drives the cyclist forward, and friction is the force that resists the motion of the wheels on the road.

In 25 minutes, the cyclist would have travelled 15 miles per hour * (25 minutes/60 minutes/hour) = 6.25 miles. To convert this to meters, we can use the conversion factor 1 mile = 1609.34 meters, so 6.25 miles * 1609.34 meters/mile = 10,116.75 meters. The number of meters the cyclist would have travelled in 25 minutes is 10,116.75 meters.