44. The maximum horizontal distance a boy can throw a ball is 50 m. Assume he can throw with the same initial speed at all angles. How high does he throw the ball when he throws it straight upward

Answer:

False. Not everything can turn into a black hole. The formation of a black hole requires a massive object, typically a star, to collapse under its own gravity. This collapse causes the object to become so dense that it creates a singularity, a point of infinite density at the center of the black hole, which is surrounded by an event horizon, the point of no return beyond which nothing, not even light, can escape. So, only objects with sufficient mass and gravity can become black holes.

Explanation:

Answer: Elements in the same group

Answer: mass

Explanation:

Its not a force its mass. We have mass but we arent having mass done to us.

(1) To analyze the motion of the mass in this scenario, one would need to consider the principles of oscillatory motion or use techniques specifically designed for systems involving springs, such as differential equations or energy methods.

(2) As time progresses, the energy would decrease, eventually reaching a minimum value when the system comes to rest.

(3) It's important to note that the rate of decrease in mechanical energy would depend on the magnitude and nature of the non-conservative force, as well as other factors such as the initial conditions of the system.

(1) In the first part of the lab, where the mass is moving up and down, the velocity is continuously changing. The kinematic equations can be used to determine various parameters such as position, velocity, and acceleration.

The kinematic equations are a set of equations that relate the motion of an object to its position, velocity, acceleration, and time. These equations are derived based on the assumptions of constant acceleration or constant velocity, which are not applicable in this case.

The motion of the mass in the lab involves a spring, which introduces a varying force that depends on the displacement of the mass. The force exerted by the spring is given by Hooke's law, which states that the force is proportional to the displacement from the equilibrium position.

This means that the acceleration of the mass is not constant, and therefore the kinematic equations cannot be directly applied to determine the position or other parameters accurately.

(2) Hooke's law states that the force exerted by a spring is directly proportional to the displacement from its equilibrium position. In the simulation, if the spring obeys Hooke's law, the force exerted by the spring should increase linearly with the displacement. This can be verified by examining the relationship between the force and the displacement in the simulation data.

By plotting a graph of the force exerted by the spring against the displacement, if the spring obeys Hooke's law, the data points should lie on a straight line through the origin (0,0). Deviations from a straight line would indicate that the spring does not strictly follow Hooke's law.

(3) In the presence of a non-conservative force such as air resistance, the total mechanical energy of the system would decrease over time. This is because non-conservative forces dissipate energy from the system, converting it into other forms such as heat or sound. As a result, the mechanical energy, which is the sum of the potential energy and kinetic energy, would gradually decrease.

If a graph of the total mechanical energy versus time is plotted, it would show a decreasing trend. Initially, the energy would be at its maximum when the system is at its equilibrium position.

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a) Trina and Fan would need to consider the specific context and properties of Flask 1 to determine the types of energy involved.

b) By running the computational model, Trina and Fan could observe how changes in Flask 1's energy affect Flask 2 and vice versa.

a. Trina and Fan can calculate the change in energy in Flask 1 by considering the initial and final states of the system. The change in energy is typically calculated using the formula:

ΔE = E_final - E_initial

To calculate the change in energy, they need to determine the initial energy and final energy of Flask 1. The energy of a system can include various forms such as potential energy, kinetic energy, and thermal energy.

Trina and Fan would need to consider the specific context and properties of Flask 1 to determine the types of energy involved. For example, if Flask 1 contains a fluid that is being heated, they would need to consider the initial and final temperatures and the specific heat capacity of the fluid to calculate the change in thermal energy.

b. To create a computational model showing how the energy change in Flask 1 relates to the energy change in Flask 2, Trina and Fan would need to consider the interactions and energy transfers between the two flasks. They could develop a simulation or computational algorithm to track the energy changes in both flasks over time.

The model would need to take into account the specific conditions and processes occurring in the two flasks. For example, if Flask 1 is a heat source and Flask 2 is a heat sink, they would need to model the transfer of thermal energy from Flask 1 to Flask 2.

The computational model could involve equations and algorithms that represent the energy transfer mechanisms such as conduction, convection, or radiation. They would need to consider the material properties, surface areas, and temperature differences between the flasks to accurately simulate the energy flow.

By running the computational model, Trina and Fan could observe how changes in Flask 1's energy affect Flask 2 and vice versa. They could analyze the data and results to understand the relationship between the energy changes in the two flasks and identify any patterns or trends.

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Answer:

A. higher, lower

Explanation:

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The importance of a studying anthropology to teenagers is that help them to know their roles in the society as well as teach them acceptable social behaviour.

Anthropology is the scientific study of human behaviour, culture and language, both in past and present human societies.

A study of anthropology helps to educate teenagers and help them see their roles in the society as well as them acceptable social behaviour.

Area of importance of anthropology include:

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Answer:

500

Explanation: its 500 because you can also just search for it

Answer:

Explanation:

W = 25 Watts

V = 12.6 Volts

I = ? I is the current in amperes.

Solution

25 = 12.6 * I

I = 25 / 12.6

I = 1.98 amperes

V = 12.6

I = 1.98

R = ??

V = I * R

12.6 = 1.98 * R

R = 12.6 / 1.98

R = 6.35 ohms

(c) Total internal reflection occurs

when the incident angle is greater than the critical angle.

Answer:

if we drop it and not throw it then

after 0.75 how fast the book is falling is given by its velocity as

v= at

= 9.8 × 0.75

=7.35 m/s

Answer:

Apply the equation of motion

v

=

u

+

a

t

The initial velocity is

u

=

5.12

m

s

−

1

The acceleration is

a

=

0.933

m

s

−

2

The time is

t

=

5.7

s

The final velocity is

v

=

u

+

a

t

=

5.12

+

(

0.933

)

×

(

5.7

)

=

10.438

m

s

−

1

Answer:

.

Explanation:

Answer:

do sports eg skipping rope, playing basketball, badminton etc. in other words, activities that involve jumping

A modulo-24 counter circuit needs at least five D flip-flops to count up to 24.

A modulo-24 counter circuit needs at least 5 D flip-flops. A D flip-flop, also known as a data or delay flip-flop, is a type of flip-flop that stores the value of the data input.

In a modulo-n counter, the counter's output will change state only when n pulses have been received. In other words, the counter cycles through n states before returning to its original state. For a modulo-24 counter, this implies that there will be 24 states before it repeats the original state.

The state diagram of the modulo-24 counter can be represented as follows:As a result, 24 is equivalent to 11000 in binary. Since there are five digits in 11000, the modulo-24 counter will require at least five D flip-flops.The main answer is that a modulo-24 counter circuit needs at least 5 D flip-flops.

In digital electronics, a counter circuit is used to generate binary numbers using a clock pulse. A counter circuit is a collection of flip-flops that are connected together to form a sequential circuit.

A sequential circuit is a circuit in which the output is dependent on the input and the state of the circuit. There are two types of sequential circuits: synchronous and asynchronous.In synchronous sequential circuits, the output is dependent on the input and the state of the circuit, and the clock is used to synchronize the operation of the flip-flops. The clock pulse controls the operation of the flip-flops.

The flip-flops are triggered at the rising or falling edge of the clock pulse.In asynchronous sequential circuits, the output is dependent on the input and the state of the circuit, but the clock is not used to synchronize the operation of the flip-flops. Instead, the flip-flops are triggered by the output of other flip-flops or external signals.In a counter circuit, the number of flip-flops required depends on the modulus of the counter.

The modulus is the number of states in the counter. For example, a modulus-16 counter has 16 states. A modulus-24 counter has 24 states. A modulus-32 counter has 32 states.A D flip-flop is a type of flip-flop that stores the value of the data input. In a counter circuit, the D flip-flops are used to store the count. The output of the counter is taken from the outputs of the flip-flops.

The conclusion is that a modulo-24 counter circuit needs at least five D flip-flops to count up to 24.

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To find the exerted force by the sea belt, we use Newton's Third Law.

Basically, the force exerted by the sea belt is opposite and equal to the force exerted by the person.

Therefore, the answer is -35 N, that's the force exerted by the seat belt.

The assignment most likely to carry a works cited page is a research paper or an essay that requires the use of external sources.

A works cited page is essential in such assignments because it provides a list of the sources that have been referenced throughout the paper, acknowledging the original authors and their work. This practice is crucial in maintaining academic integrity and avoiding plagiarism. The works cited page should follow a specific citation style, such as APA, MLA, or Chicago, depending on the assignment guidelines provided by the instructor or institution.

In a research paper or essay, a works cited page helps readers verify the accuracy and credibility of the information presented, as well as locate the original sources for further study or understanding. Overall, a works cited page is an essential component of any assignment that relies on external sources to support arguments, ideas, or research findings.

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Angular speed = 0.4 rad/s , when a 5.0-m radius playground merry-go-round with a moment of inertia of 2000 kg m2 is rotating freely with an angular speed of 1.0 rad/s.

radius = 5 m

moment of inertia = 2000 kg-m²

angular speed = 1.0 rad/s

mass = 60 kg

to find out

angular speed

solution

Rotational momentum of merry-go-round = I?

The momentum we experience here is expressed as

momentum = 2000 × 1

momentum = 2000 kg-m²/s

and  

Inertia of people will be here as

Inertia of people = mr² = 60 × 5²

Inertia of people = 1500 kg-m²

so Inertia of people for two people  

1500 × 2 = 3000

and

Currently, angular momentum conservation

(Momentum + People's Inertia) = Moment of Inertia Angular Speed angular velocity

2000 ×  1 = (2000 + 3000 ) ω

solve we get now  

ω = 0.4 rad/s

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Answer: Sea otter is the pioneer species in the kelp forest as it regulates and controls the population of other species in the kelp forest.

Explanation:

If sea otters are hunted and their population is brought to extinction then this will cause major harm the ecosystem of the kelp forest and it will disturb the ecological balance in the kelp forest. The herbivorous animals consumed by the sea otters will increase in population and they will consume a lot of vegetation in the forest. The kelp forest which forms the coastline will not remain effective in providing protection against the storms to the neighboring areas.

Answer:

G.P.E  = 414050 Joules or 414.05 Kilojoules

Explanation:

Given the following data;

Mass = 65 kg

Height = 650 m

We know that acceleration due to gravity is equal to 9.8m/s²

To find the gravitational potential energy;

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

Mathematically, gravitational potential energy is given by the formula;

\( G.P.E = mgh\)

Where;

Substituting into the equation, we have;

\( G.P.E = 65 * 9.8 * 650 \)

\( G.P.E = 414050 \)

G.P.E  = 414050 Joules or 414.05 Kilojoules.

The enthalpy of 36 g g of water vapor increases by 1830 j j when its temperature increases from 150∘c to 175∘c is 1830 J.

The enthalpy of 36 g of water vapor increases by 1830 J when its temperature increases from 150°C to 175°C. Assuming water vapor is an ideal gas, the change in enthalpy can be calculated using the following equation:

ΔH = Cp * m * ΔT

Where Cp is the specific heat capacity of the gas, m is the mass of the gas, and ΔT is the change in temperature. In this case, Cp = 1.88 J/g°C, m = 36 g, and ΔT = 25°C. Therefore, the change in enthalpy is:

ΔH = 1.88 * 36 * 25 = 1830 J.

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The north and west components of this displacement are 9.19 km and -7.71 km respectively.

The north component of the displacement is calculated as follows;

Dy = D sinθ

Dy = 12 km x sin50

Dy = 9.19 km

Dx = D x cosθ

Dx = - 12 km x cos(50)

Dx = -7.71 km

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Answer:

The formula for force according to Newton's second law of motion is F=ma or force for an object to move is equal to mass times acceleration.

Acceleration or average acceleration defined as change in velocity per time.

F=ma

F=1.2x10³kg*(20m/s)(1/5s)=4.8x10³  Newtons

Explanation:

fthat's not the answer then i'm sorry

Answer:

parallel

Explanation:

Earth's magnetic field resembles the magnetic field produced by a large bar magnet. Bar magnets have ends that are oppositely charged. This opposite polarity causes magnetic objects to align parallel to the magnetic field produced by the bar magnet.

Magnetic objects align parallel to the Earth's magnetic field.

Parallel aligning means that the magnetic object will point in the same direction as the magnetic field lines of the Earth.  The Earth's magnetic field is a force field that surrounds the Earth and is created by the movement of molten iron in the Earth's outer core. It is also known as the geomagnetic field and is responsible for the Earth's magnetism.

The Earth's magnetic field lines run from the North Pole to the South Pole, so magnetic objects will align in a north-south direction. This is why compasses, which contain a small magnetic object, are able to point in the direction of the Earth's magnetic North Pole.

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Answer:

C. The frequency stays the same and the wavelength decreases

Explanation:

The speed of a wave, 'v', is given as follows;

v = Frequency, f × Wavelength, λ

∴ v = f × λ

Therefore, the speed of the wave is directly proportional to the wavelength

v ∝ λ

When the speed of the sound wave increases as it enters a new medium, we have that frequency of the wave, which is determined at the source, remains the same, while the wavelength of the wave increases

As 'v' increases, λ increases

Therefore, for an increase in velocity of the wave, the frequency of the wave stays the same and the wavelength increases.

Answer:

C. The frequency stays the same and the wavelength decreases

Explanation:(Plato)

Explanation:

I think the total resistance of the resistors is 1 ohm . it is also known as equivalent resistance.

hope it helps.

The rate of change of the height of the top of the ladder is -48 ft/sec. The area is changing at -527 ft²/sec. The angle is changing at -0.041 rad/sec

To solve this problem, we can use the Pythagorean Theorem and implicit differentiation. The Pythagorean Theorem states that a² + b² = c², where a and b are the lengths of the two shorter sides of a right triangle, and c is the length of the hypotenuse. In this case, a is the height of the ladder, b is the distance from the base of the ladder to the house, and c is the length of the ladder.
First, we'll find the rate of change in the height of the top of the ladder. Using the Pythagorean Theorem, we get:
a² + b² = c²
Taking the derivative of both sides with respect to time gives us:
2a(da/dt) + 2b(db/dt) = 0

We are given that db/dt = 14 ft/sec and c = 25 ft. We also know that when b = 24 ft, a = 7 ft (from the Pythagorean Theorem). Plugging in these values gives us:
2(7)(da/dt) + 2(24)(14) = 0
da/dt = -48 ft/sec
This is the rate of change of the height of the top of the ladder.

Next, we'll find the rate of change of the area of the triangle formed by the ladder, wall, and ground. The area of a triangle is given by A = (1/2)bh, where b is the base and h is the height. In this case, b = 24 ft and h = 7 ft. Taking the derivative of both sides with respect to time gives us:

dA/dt = (1/2)(b)(dh/dt) + (1/2)(h)(db/dt)

Plugging in the values we know gives us:
dA/dt = (1/2)(24)(-48) + (1/2)(7)(14)
dA/dt = -527 ft²/sec
This is the rate of change of the area of the triangle.

Finally, we'll find the rate of change of the angle between the ladder and the ground. The angle θ is given by tanθ = a/b. Taking the derivative of both sides with respect to time gives us:
sec²θ (dθ/dt) = (b)(da/dt) - (a)(db/dt) / b^2

Plugging in the values we know gives us:
sec²θ (dθ/dt)  = (24)(-48) - (7)(14) / 24²
            dθ/dt  = -0.041 rad/sec
This is the rate of change of the angle between the ladder and the ground.

So, the rate of change of the height of the top of the ladder is -48 ft/sec, the rate of change of the area of the triangle is -527 ft²/sec, and the rate of change of the angle between the ladder and the ground is -0.041 rad/sec.

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The event that marks the end of a star's evolutionary life before becoming a white dwarf is a planetary nebula. So, option E is correct.

A planetary nebula is characterized by cosmic rays of gas and dust surrounding a dying star. This dying star becomes a white dwarf after the complete depletion of hydrogen in the core.

It gets its name from a scientist who described the gases to be looking like two planets around a dying star. Thus, it's called planetary nebulae. This marks the final stage of a dying star that becomes a white dwarf. It consists of the outer layers of the star.

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Answer: true

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