PLEASE HELP THIS IS DUE LIKE HELP ME PLEASE

On the image at the right, select the point where the pendulum swings fastest. Then, select two points with a velocity is zero.

The hippo's center of gravity is located 3.2 meters from its tail.

To determine the distance of the hippo's center of gravity from its tail, we need to consider the weight distribution between its front and rear feet. Given that the hippo carries 80% of its weight on its front foot, we can assume that 80% of the hippo's total weight acts at the front. Let's denote the distance from the tail to the center of gravity as "x."

Since the rear foot is located at the tail, the remaining 20% of the weight acts at the rear foot. Using the principle of moments, we can set up the equation: (80% of the weight) * (distance from front foot to center of gravity) = (20% of the weight) * (distance from rear foot to center of gravity). Plugging in the given values, we have (0.8) * (4.0 - x) = (0.2) * x. Solving this equation, we find x = 3.2 meters. Therefore, the hippo's center of gravity is located 3.2 meters from its tail.

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Answer:

yes I think

Explanation:

because lamp is connected to eac other

Answer:

Explanation:

The amount of force needed needs to be greater than all the forces acting in the opposite direction that the bowling ball was thrown. This includes air resistance, floor friction, gravity, and any other force involved. As long as the force acting on the bowling ball that is causing it to go in the direction of the pins is slightly greater than the opposite acting forces then it will continue in that direction. Since no values are provided we cannot calculate the actual precise value of force needed.

Answer:

March 15, 1641

Cardinal Maffeo Barberini,

I long awaited for my words to reach you. I sit here in my study, writing to you from Pisa. First I must ask how you are, how everything is. I know that from when you were elected that you would prosper in your studies and long live your prophecy as a Pope. Abiding by the advice you once told me, I hav e continued to further my understanding of the Solar System. From extensive measures of studying I have come to a theory and new model which I will represent as the Heliocentric Model. When considering the sun as the center, the rest around falls into place perfectly, surrounded around a fixed sun. Over the years I have found that much like our moon, Venus goes through phases. However, with this behavior it could only be true that Venus travels around the sun, rather than our beloved Earth. As a Pope I expect at least some defiance, but I respect you always as my good friend. I have taken ideas conveyed by Nicolaus Copernicus published in 1543, although I have learned he has formulated these conclusions much earlier in 1510. Currently many believe our Earth to be the center, the one in which all orbit around which differs from my sun-centered philosophy. Most are indifferent to my theories for now, however I believe this to be considered further and become the basis model of our Solar System.

-Galileo  

Answer:

Explanation:

The initial vertical velocity is 540sin55° = 442.342103... 442 m/s

The initial horizontal velocity is 540cos55° = 309.731275... 310 m/s

In the real world, both initial velocities would be reduced by air resistance and vertical velocity will be altered by gravity.

Answer:

The speed of light is a constant, but it can accelerate by changing direction. For instance, light accelerates under the influence of gravity like every other falling object. Reflection is not a very meaningful form of acceleration since the Δt≈0, but it certainly a change in velocity.

Answer:

True.

Explanation:

One can expect good quality produce if proper attention is given to the proper selection of planting materials.

The battery has a voltage of roughly 16.6 V.

an easy downshifter with resistors. A resistive divider is the most basic step-down circuit that is feasible. Put the 5V output through a series of resistors and then tap the 3.3V logic input. An applied 5V input should result in a 3V output from a chain of 2.2k and 3.3k resistors.

When resistors are connected in series, the circuit's overall resistance is the sum of its component resistances:

R_total = R_1 + R_2 + ...

R_total = R_1 + R_2 = 25.0 ohm + 40.0 ohm = 65.0 ohm

The current flowing through the circuit is given as 0.255 Amps.

We can use Ohm's law to calculate the voltage of the battery:

V = I × R_total

Substituting the values, we get:

V = 0.255 A × 65.0 ohm ≈ 16.6 V

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A brighter light source will result in a larger voltage drop across the resistor in a circuit with a phototransistor because the increased current flowing through the circuit causes a larger voltage drop according to Ohm's law.

If there is a single resistor in series with a phototransistor, a brighter light source would result in a larger voltage drop across the resistor.

The reason for this is that when the phototransistor is exposed to a brighter light source, more current will flow through the circuit because the phototransistor allows more current to pass through in the presence of a brighter light.

This increased current will cause a larger voltage drop across the resistor because the voltage drop across a resistor is directly proportional to the current flowing through it according to Ohm's law.

Ohm's law states that the voltage drop (V) across a resistor is equal to the current (I) flowing through it multiplied by the resistance (R) of the resistor:

V = IR.

Therefore, if the current through the circuit increases due to the brighter light source, the voltage drop across the resistor will also increase because the resistance of the resistor remains constant.

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A convex lens would make the best magnifying glass. This is because a convex lens bends light in such a way that it causes the image of an object to be magnified. When light passes through a convex lens, it is refracted, or bent, towards the center of the lens. This causes the image of an object to appear larger than it actually is, which is why convex lenses are used in magnifying glasses. In contrast, a concave lens bends light away from the center of the lens, which causes the image of an object to appear smaller than it actually is. Therefore, a convex lens would make the best magnifying glass because it causes the image of an object to be magnified, whereas a concave lens causes the image of an object to be reduced.

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Answer:

5.3 s

Explanation:

Given:

v₀ = 52 m/s

v = 0 m/s

a = -9.8 m/s²

Find: t

v = at + v₀

0 m/s = (-9.8 m/s²) t + 52 m/s

t = 5.3 s

Answer:

10 hours to get to Paris

Answer:

Light is faster in air than in glass so the speed of light decreases when it passes through glass.

Two objects attract each other gravitationally with a force of:

\(F = G \times (m1 \times m2) / r^2\).

The force of attraction between two objects has an inverse relationship to their squared distance, according to Newton's law of universal gravitation. It varies in direct proportion to the product of the object masses.

Gravity is a fundamental interaction that causes all objects with mass or energy to attract one another.

Two objects attract each other gravitationally with a force of:

\(F = G \times (m1 \times m2) / r^2\).

where F is the gravitational force between the two objects in Newtons, m1 and m2 are the masses of the two objects in kilograms, r is the distance between the centers of the two objects in meters, and G is the gravitational constant, which has a value of approximately \(6.674 \times 10^-11 Nm^2/kg^2.\)

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Answer:

D. The total amount of energy at the bottom is equal to the amount at the top, but he gained some energy as he traveled due to a higher speed.

Explanation:

The total amount of energy at the bottom is equal to the amount at the top, but some energy was converted into other forms due to friction.

Therefore the correct answer is option B.

The sum of all the energy in motion (total kinetic energy) and all the energy that is stored in the system (total potential energy) is known as mechanical energy.

The expression for total mechanical energy can be given as follows

ME= PE + KE

As given in the problem Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy. At the bottom of the hill, when he is going the fastest, his kinetic energy measures 2650J.

However, some energy was changed into other forms owing to friction, so the total quantity of energy at the bottom is equal to the whole amount at the top.

Thus, option B is the appropriate response,

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The sequence is convergent.

To show that the sequence is convergent using the Monotonic Sequence Theorem, we need to demonstrate two things: (1) the sequence is bounded, and (2) the sequence is monotonic.

Boundedness: We can observe that the terms of the sequence are all positive (since they are squared) and the denominator is increasing. Therefore, as the denominator grows, the terms of the sequence become smaller. This implies that the sequence is bounded below by zero.

Monotonicity: To prove that the sequence is monotonically decreasing, we can compare consecutive terms. Taking the difference between terms, we get:

a_n+1 - a_n = (n+1)^2 / (n+1)! - n^2 / n! = [(n+1)^2 * n! - n^2 * (n+1)!] / [(n+1)! * n!] = [(n+1)^2 - n^2] / (n+1)! = [2n + 1] / (n+1)!

Since 2n + 1 > 0 and (n+1)! > 0 for all n, the difference between consecutive terms is positive. Thus, the sequence is monotonically decreasing.

Since the sequence is both bounded and monotonically decreasing, the Monotonic Sequence Theorem guarantees that the sequence is convergent.

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Potential and kinetic energy are at play when we talk about Newton's second law of motion through the various positions in relation to the bodies involved.

This law states that force is equal to the rate of change of momentum and is denoted as F = mv where m is mass and v is velocity.

Potential energy is the energy is possessed by a body by virtue of its position while kinetic energy is possessed by a body by virtue of its motion. Both forms of energy are influenced by forces and are equal to the total momentum.

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Answer:

10.4 m/s

Explanation:

BRAINLIEST?

Answer:

I say that the answer is D all of the above hope this helps ‍♂️

The initial state of the hydrogen atom is characterized by quantum number n₁ = 167, and the final state is characterized by quantum number n₂ = 64.

The emission of violet light of wavelength 410 nm by a group of hydrogen atoms in a discharge tube corresponds to a transition between two energy levels of the atom. We can use the Rydberg formula to determine the quantum numbers of the initial and final states of this transition;

1/λ = R × (1/n₁² - 1/n₂²)

where λ is the wavelength of the emitted light, R is the Rydberg constant, and n₁ and n₂ are the quantum numbers of the initial and final states, respectively.

Substituting the given values, we get;

1/410 nm = R × (1/n₁² - 1/n₂²)

where R = 1.097 x 10⁷ m⁻¹.

Converting the wavelength to meters and simplifying the equation, we get;

n₁² - n₂² = (1.097 x 10⁷ m⁻¹) / (410 x 10⁻⁹ m)

n₁² - n₂² ≈ 23,829

The difference between the squares of two consecutive integers is always an odd number, so we can express the above equation as;

(n₁ + n₂) × (n₁ - n₂) = 23,829

The factors of 23,829 are 1, 3, 7, 11, 21, 33, 77, and 231. Since n1 and n2 must be positive integers, the only possible combination of factors that yields two consecutive integers is;

n₁ + n₂ = 231

n₁ - n₂ = 103

Solving for n₁ and n₂, we get;

n₁ = (231 + 103) / 2 = 167

n₂ = (231 - 103) / 2 = 64

Therefore, the quantum numbers of the atom's initial and final states is n₁ = 167, and n₂ = 64.

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Answer:

A i think tell me if i got it right

Explanation:

Based on the location on the periodic table, Potassium (K) is the metal that will be less reactive than rubidium and more reactive than calcium.

The ball will hit the ground after approximately 1.88 seconds and at a horizontal distance of approximately 34.15 ft away.

a. To find the position vector of the particle at time t, we can use the kinematic equation for motion with constant acceleration. The position vector ⃗r(t) is given by ⃗r(t) = ⃗r₀ + ⃗v₀t + 0.5⃗at², where ⃗r₀ is the initial position vector, ⃗v₀ is the initial velocity vector, ⃗a is the acceleration vector, and t is the time.

Plugging in the values, we have ⃗r(t) = (5, 0, 4) + (0, 0, 7)t + 0.5(-11, -1, -5)t², which simplifies to ⃗r(t) = (5 - 11t^2, -t, 4 - 5t^2). This gives the position vector of the particle at any given time t.

b. For the baseball, we can analyze its motion using projectile motion equations. The vertical and horizontal motions are independent of each other, except for the initial velocity. The vertical motion is affected by gravity, with an acceleration of -32 ft/s².

Using the given initial speed of 26 ft/s and the launch angle of 20 degrees, we can decompose the initial velocity into its vertical and horizontal components. The vertical component is 26 * sin(20°) ft/s, and the horizontal component is 26 * cos(20°) ft/s.

To find the time of flight, we can use the equation for vertical motion: y = y₀ + v₀yt + 0.5at². The initial vertical position is 40 ft, the initial vertical velocity is 26 * sin(20°) ft/s, and the vertical acceleration is -32 ft/s². Solving for t, we get t ≈ 1.88 seconds.

To find the horizontal distance, we use the equation x = x₀ + v₀xt, where the initial horizontal position x₀ is 0 ft (assuming the ball is thrown from the stands), the initial horizontal velocity v₀x is 26 * cos(20°) ft/s, and the time of flight t is approximately 1.88 seconds. Solving for x, we find x ≈ 34.15 ft.

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Answer:

the answer is a. a ball is moving towards the camera faster then slower

distance = l × √(3) / 2, where l is the distance between the charges −Q and −3Q.

The net force on each charge must be zero for the two charges to be in equilibrium.

Part A: The net force on each charge must be zero for the two charges to be in equilibrium. The force between the charges can be calculated using Coulomb's law:

F = k * (Q1 * Q2) / d²

where k is the Coulomb constant, Q1 and Q2 are the magnitudes of the charges, and d is the distance between them.

For the charges −Q and −3Q, the force between them can be found as:

F = k * (Q * -3Q) / l²  = k * 3Q²  / l²

This force must be balanced by the force of the third charge, Q3, on the charges −Q and −3Q. The force between Q3 and −Q is:

F = k * (Q3 * Q) / (l/2)²

The force between Q3 and −3Q is:

F = k * (Q3 * -3Q) / (l/2)²

For the two charges to be in equilibrium, the sum of the forces must be zero, so:

k * 3Q²  / l²  = k * (Q3 * Q) / (l/2)²  + k * (Q3 * -3Q) / (l/2)²

Solving for Q3, we get:

Q3 = -9Q * l²  / 4l²  = -9Q / 4

Part B: To find the distance from −Q to the third charge, we need to consider the magnitude of the force on each charge and the direction of the forces.

For the force on −Q, the direction is toward the third charge, and the magnitude is given by:

F = k * (Q3 * Q) / (l/2)²

For the force on −3Q, the direction is away from the third charge, and the magnitude is given by:

F = k * (Q3 * -3Q) / (l/2)²

Since the forces must balance, we have:

k * (Q3 * Q) / (l/2)²  = k * (Q3 * -3Q) / (l/2)²

Solving for the distance from −Q to the third charge, we get:

l/2 = (l/2) * √(Q / -3Q) = (l/2) * √(1/3)

So the distance from −Q to the third charge is:

l/2 * √(3) = l * √(3) / 2

The final answer is:

distance = l * √(3) / 2

where l is the distance between the charges −Q and −3Q.

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The volume that 1L of gas will occupy at 37°C and a constant pressure is 0.8L. Details about volume can be found below.

The volume of a gas can be calculated using the Charles law equation as follows:

V1/T1 = V2/T2

Where;

1/310 = V2/248

248 = 310V2

V2 = 248 ÷ 310

V2 = 0.8L

Therefore, the volume that 1L of gas will occupy at 37°C and a constant pressure is 0.8L.

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Answer:

The angular velocity is: (2π radians) ⁄ (4.3 sec) = 1.461 rad/sec

The angular displacement is: (1.461 rad/sec)(1 sec) = 1.461 radians

Explanation:

Answer:

Velocity

Explanation:

You would be describing the velocity of the car.

Velocity in physics is defined as Vector quantity that describes the displacement of an object with respect to the time it takes to attain it. Displacement is the addition of direction to the speed of an object. The displacement is noted in the question, "traveling eastward". While it is stated that the car travels at 44.704 m/s. Ordinarily, it would have been tagged speed, if not for the direction added to it which makes it velocity.

I hope you understand.

Charge,Q = 6.48 × \(10^-^9\) C

It is given that,

Electric field strength, E = 180000 N/C

Distance from a small object, r = 1.8 cm = 0.018 m

Electric field at a point is given by :

\(E=\frac{KQ}{r^2}\)

Q is the charge on an object

\(Q=\frac{Er^2}{k}\)

Q = [180000 × \((0.018)^2\)] ÷ 9 × \(10^9\)

Q = 6.48 × \(10^-^9\) C

So, the charge on the object is Q = 6.48 × \(10^-^9\) C . Hence, this is the required solution.

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During a fusion reaction, two statements that describe what happens to the nuclei of atoms are A small amount of mass in the nuclei that combine is converted to energy and Nuclei with small masses combine to form nuclei with larger masses.​ The correct option is B and D.

A small amount of mass in the nuclei that combine is converted to energy. During the fusion reaction, when the smaller nuclei combine, a small amount of mass is converted into a significant amount of energy, as described by Einstein's famous equation E=mc². This energy release is what makes fusion reactions so powerful and a potential source of clean energy.

Nuclei with small masses combine to form nuclei with larger masses. In a fusion reaction, lighter nuclei, typically isotopes of hydrogen like deuterium and tritium, combine under high pressure and temperature to form larger nuclei, such as helium. This process is what powers the Sun and other stars, as they fuse hydrogen into helium, releasing energy in the form of light and heat. The correct option is B and D.

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Complete question:

Which two statements describe what happens to the nuclei of atoms during a fusion reaction?

A. Large nuclei break apart into two or more smaller nuclei.

B. A small amount of mass in the nuclei that combine is converted to energy.

C. Each nucleus formed has fewer protons than each original nucleus had.

D. Nuclei with small masses combine to form nuclei with larger masses.​