decide whether the statement makes sense (or is clearly true) or does not make sense (or is clearly false). the iron in my blood came from a star that blew up more than 4 billion years ago. explain your reasoning.

Answer:

down below

Explanation:

I assume you're asking about it's orbit around the sun. I believe the Earth's orbit around the sun would be shorter. If the Earth sped up, one can assume that means the days are shorter and the rate at which the Earth orbits the sun would also speed up.

This sounds like an open ended question, so I don't think there can be a wrong answer.

Hope this helps! :)

The force at the point (x, y) is given by the vector (-2, -3). This result is obtained by taking the negative of the partial derivatives of the potential energy function with respect to x and y.

To determine the force at a point (x, y), we need to find the partial derivatives of the potential energy function with respect to x and y. Taking the negative of these derivatives will give us the components of the force vector.

Given the potential energy function u = -3y - 2x, we calculate the partial derivatives as follows:

∂u/∂x = -2

∂u/∂y = -3

Taking the negative of these results, we get the components of the force vector:

F = (-∂u/∂x, -∂u/∂y) = (-(-2), -(-3)) = (-2, -3)

Therefore, the force at point (x, y) is (-2, -3) in vector form.

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a. The force acting on the astronaut by the moon is approximately 2.54 × 10^3 Newtons.

b. The speed of the astronaut orbiting the moon is approximately 1.54 × 10^3 meters per second.

a. To calculate the force acting on the astronaut by the moon, we can use Newton's law of universal gravitation:

F = G * (m1 * m2) / r^2

where:

F is the force,

G is the gravitational constant (approximately 6.67430 × 10^-11 m^3 kg^-1 s^-2),

m1 is the mass of the astronaut (75 kg),

m2 is the mass of the moon (7.35 × 10^22 kg), and

r is the distance between the astronaut and the moon's center (2.5 × 10^6 m).

Let's plug in the values and calculate the force:

F = (6.67430 × 10^-11 m^3 kg^-1 s^-2) * (75 kg) * (7.35 × 10^22 kg) / (2.5 × 10^6 m)^2

F ≈ 2.54 × 10^3 N

Therefore, the force acting on the astronaut by the moon is approximately 2.54 × 10^3 Newtons.

b. To find the speed of the astronaut, we can use the centripetal force equation:

F = (m * v^2) / r

where:

F is the force (calculated in part a, approximately 2.54 × 10^3 N),

m is the mass of the astronaut (75 kg),

v is the speed of the astronaut (what we need to find), and

r is the distance between the astronaut and the moon's center (2.5 × 10^6 m).

Let's rearrange the equation to solve for v:

v^2 = (F * r) / m

v = √((2.54 × 10^3 N * 2.5 × 10^6 m) / 75 kg)

v ≈ 1.54 × 10^3 m/s

Therefore, the speed of the astronaut orbiting the moon is approximately 1.54 × 10^3 meters per second.

a. The force acting on the astronaut by the moon is approximately 2.54 × 10^3 Newtons.

b. The speed of the astronaut orbiting the moon is approximately 1.54 × 10^3 meters per second.

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Answer:

1609.3

Explanation:

The high-speed, outward expansion of the solar wind away from the Sun is driven by a difference in temperature and pressure between the Sun's corona and interstellar space.

The Sun's corona, which is its outermost layer, has extremely high temperatures, reaching up to a few million degrees Kelvin.

This high temperature causes the gas particles in the corona to gain energy and move rapidly, creating high pressure.

Interstellar space, on the other hand, has much lower temperatures and pressure. This difference in temperature and pressure between the Sun's corona and interstellar space creates a pressure gradient, which accelerates the solar wind away from the Sun at high speeds.

The driving force behind the high-speed expansion of solar wind from the Sun is the difference in temperature and pressure between the Sun's corona and interstellar space. This pressure gradient accelerates the solar wind, causing it to travel rapidly outward into space.

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Answer:

Explanation:

The formula for the electric field is

\(E=\frac{kQ}{r^2}\)  where E is the magnitude of the electric field, k is Coulomb's constant, Q is the charge of the particle (which is NOT included in the formula), and r is the distance between the centers of the charges (for lack of a better description).

\(E=\frac{(9.0*10^9)*(6.5*10^{-6})}{(1.50)^2}\) and we get, to 2 sig fig's

E = 2.6 × 10⁴ to the left (since electric fields are always pointing toward the negative charge and the electric field is to the right of the negative charge)

The masses amount of a proton and neutron are 1.0087 and 1.0073 amu respectively.

This is defined as  sub atomic particle which is positively charged and is present in the nucleus while the neutron is also a particle present in the nucleus but has a neutral charge.

Electrons on the other hand are found outside the nucleus and are negatively charged. It is the sub atomic particle which is actively involved in a chemical reaction.

The masses of neutron and proton are 1.0087 and 1.0073 amu respectively and was discovered by scientists thereby making it the most appropriate choice.

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Answer:

m = 1,975 m / kg , b = 38.05 m

Explanation:

In this experiment, the elongation is plotted against the applied mass

getting a straight line

            y = m x + b

where b would be the initial length of spring let's calculate the slope for which we use two well separated points

           m = (56.3 -48.4) / (8 - 4)

           m = 1,975 m / kg

the equation remains

         y = 1,975 x + b

for x = 2 kg y = 42.0 m

we substitute in the equation

           42 = 1,975 2 + b

           b = 42 - 3.95

           b = 38.05 m

Answer: i don’t know maybe later i will ask thAT question

Explanation:

Answer:  45 kmph, AAAAAAAAAAAAAAAAAAAAAAA

The speed of the fighter jet the instant after it launches the missile is 352.36 m/s.

The final speed of the fighter jet is the speed of the fighter jet after launching the missile.

Apply the principle of conservation of linear momentum;

m₁u  +  m₂u   =  m₁v₁   +   m₂v₂

where;

u(m₁ + m₂) = m₁v₁ + m₂v₂

365(12,652 + 190) = 12,652v₁  +  190(1207)

4,687,330 =  12,652v₁  + 229,330

12,652v₁ = 4458000

v₁ = 4458000 / 12,652

v₁ = 352.36 m/s

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The efficiency of this light bulb is 25% .

Given data :

output = 30j

Input = 120j

Efficiency  = output / input x 100

  = 30 / 120 x 100

  = 25%

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The motion or path of the tennis ball is the path of a projectile, which has

both vertical and horizontal motion.

The total horizontal distance traveled by the tennis ball during the entire

time it is in the air ≈ 16.514 meters.

Reasons:

The given parameters are;

The direction in which the ball is launched = 45°

The initial vertical velocity of the ball, \(v_y\) = 9.0 m/s

The initial horizontal velocity of the ball, vₓ = 9.0 m/s

The time it takes the ball to reach the maximum height, t = 0.92 seconds after its launch

The total horizontal distance traveled, by the tennis ball is given by the formula;

\(\Delta d_x = \dfrac{v_1^2 \cdot \left( 2 \cdot cos(\theta) \sin(\theta)}{y} = \dfrac{2 \times v_x \times v_y}{g}\)

Which gives;

\(\mathrm{The \ total \ distance \ travelled, \ \Delta} d_x = \dfrac{2 \times 9.0\times 9.0}{9.81} \approx 16.514\)

The total horizontal distance traveled by the tennis ≈ 16.514 meters

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The distance car will cover at the given speed and time will be distance = 3.8 m.

To calculate distance using formula,

s = d / t

where,

s is speed

d is distance

t is time

So, known in this are

s = 20m/s

t = 0.19 s

d = ?

Now, putting values,

speed = distance / time

20 m/s = distance / 0.19 sec

distance = 20 m/s x 0.19 sec

distance = 3.8 m

The proportion of a distance (regardless of direction) traveled to the time needed to cover that distance.

Speed, expressed in terms of meters per second, is the rate at which an object's position changes. An object moves one meter in one second, for instance, if it starts at the origin and moves three meters in three seconds. Simple division of time by distance yields the equation for speed.

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The force that is acting on the block is 19.l6 N

We have to know that the weight of the object is a force that is acting along the rope that is pulling the object. We must be able to note that the tension is the force that is acting along the rope that is pulling the object.

Now the weight of the steel block is going to act as a force of tension on the rope that is pulling the block.

We now have to know that the force is obtained from;

Force = mg

m = mass

g = acceleration due to gravity

F = 2 Kg * 9.8 m/s^2

= 19.6 N

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Answer:among

Explanation:r:among r:among r:among r:among r:among r:among r:among

The quantity of internal and mechanical energy that things contain fluctuates as a result of work.

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cut the square and make it a triangle

Answer:fda

afsd

ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff

Answer:

The height reached is 20m, The time taken to reach 20m is 2 seconds

Explanation:

Observing the equations of motion we can see that the following equation will be most helpful for this question.

\(v^{2} = u^{2} + 2as\)

We are given initial velocity, u

We know that the stone will stop at its maximum height, so final velocity, v

Acceleration, a

And we are looking for the displacement (height reached), s

Substitute the values we are given into the equation

\(0^{2} = 20^{2} + 2(10)s\)

Rearrange for s

\(0^{2} -20^{2} =20s\)

\(-400=20s\)

\(\frac{-400}{20} =s\)

s = -20 (The negative is just showing direction, it can be ignored for now)

The height reached is 20m

Use a different equation to find the time taken

\(s = vt - \frac{1}{2} at^{2}\)

Substitute in the values we have

\(-20=(0)t - \frac{1}{2} (10)t^{2}\)

Rearrange for t

\(-20 =0 -5 t^{2}\)

\(\frac{-20}{-5} =t^{2}\)

\(4 = t^{2}\)

t = 2s

The time taken to reach 20m is 2 seconds

The air that is inside a ship is much less dense than water. That's what keeps it floating! ... The closer the total density of the ship is to the density of the same volume of water, the greater the amount of the ship that will be in the water.

Answer:

mechanical energy

Explanation:

Sound energy is the result when a force, either sound or pressure, makes an object or substance vibrate. That energy moves through the substance in waves. Those sound waves are called kinetic mechanical energy.

There would no longer be seasons if Earth's axis was perpendicular to the Sun because the variation in the seasons happens due to the tilt of the earth which results in unequal distribution of the sunlight on the earth's surface throughout the year.

Therefore the correct answer is option B.

The Equator is an imaginary line passing through the middle of a globe. It is equidistant from the North Pole and the South Pole, Its is a horizontal line residing at 0 degrees latitude.

As given in the problem we have to find what happens if Earth's axis was perpendicular to the Sun,

If the Earth's axis were perpendicular to the Sun, there wouldn't be any seasons since the tilt of the planet causes an uneven distribution of sunlight on its surface throughout the year, which causes seasonal fluctuation.

Thus, the correct answer is option B.

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Answer:

Because they have already made an impact within our atmosphere

Answer:

Go ogle

Explanation:

lol :)))))))))))))))

Answer:

Here is the answer. Hope this helps you!

Explanation:

Average velocity is the sum of initial and final velocity divided by 2. I t is the same as total Displacement divided by total time. Average velocity is calculated when the body is in non-uniform motion (also when total displacement and time is not given). The formula is as follows:

u + v/2 = \(v_{av}\)

Average velocity = Average speed

during motion in a straight line. therefore, the above mentioned formula can be used for calculating average speed as well, when the direction is one and only the same, that is, during motion in a straight line. The S.I unit remains the same-

m/s.

Since velocity is vector, average VELOCITY is also vector. However, Average SPEED is scalar as speed is scalar. both can be equal only when the distance = displacement and when they are following the same direction of motion.

Answer:

0.0124 AU

Explanation:

Ganymede takes 7.15 Earth days to orbit Jupiter. Ganymede is measured to be 7.1 X 10⁻³ AU from Jupiter’s center.

We need to find how far away is Callisto from the center of Jupiter if a second moon of Jupiter, Callisto, takes 16.69 Earth days to orbit Jupiter. Let it is r₂. Using third law of Kepler.

\(T^2\propto r^3\)

i.e.

\((\dfrac{T_1}{T_2})^2=(\dfrac{r_1}{r_2})^3\\\\\dfrac{r_1}{r_2}=(\dfrac{T_1}{T_2})^{2/3}\\\\r_2=\dfrac{r_1}{(\dfrac{T_1}{T_2})^{2/3}}\\\\r_2=\dfrac{7.1\times 10^{-3}}{(\dfrac{7.15}{16.69})^{2/3}}\\\\r_2=0.0124\ \text{AU}\)

So, Callisto is 0.0124 AU from the center of the Jupiter.

As a result, the system's maximum spring potential energy U is given by: U = (2π^2MD^2)/P^2

Potential energy is the energy stored by an item as a result of its location relative to other objects, internal tensions, electric charge, or other reasons. Potential energy is stored energy that is affected by the relative location of various components in a system. When a spring is squeezed or extended, its potential energy increases. A steel ball has higher potential energy when lifted above ground than when it falls to Earth.

Here,

The maximum spring potential energy U can be calculated using the equation:

U = (1/2)kD^2

where k is the spring constant, which can be found from the period of oscillation using the equation:

k = (4π^2M)/P^2

Substituting the expression for k into the equation for U, we get:

U = (1/2)((4π^2M)/P^2) * D^2

So the maximum spring potential energy U of the system is given by:

U = (2π^2MD^2)/P^2

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The molar solubility of La(IO₃)₃ in pure water is approximately 1.0 × 10⁻⁴ mol/L.

The molar solubility of a compound refers to the maximum amount of the compound that can dissolve in a given solvent at a specific temperature, typically expressed in moles per liter (mol/L). To determine the molar solubility of La(IO₃)₃ in pure water, we can use the given value of the solubility product constant (Ksp) for La(IO₃)₃, which is 1.0 × 10⁻¹¹.

La(IO₃)₃ dissociates into La³⁺ and IO₃⁻ ions in water. Let's assume x mol/L represents the molar solubility of La(IO₃)₃. According to the balanced chemical equation, one mole of La(IO₃)₃ produces one mole of La³⁺ ions and three moles of IO₃⁻ ions.

Therefore, the solubility product expression for La(IO₃)₃ is:

Ksp = [La³⁺][IO₃⁻]³

Since the concentration of La³⁺ ions is equal to the molar solubility (x) and the concentration of IO₃⁻ ions is three times the molar solubility (3x), we can substitute these values into the Ksp expression:

Ksp = (x)(3x)³

1.0 × 10⁻¹¹ = 27x⁴

Solving for x, we find:

x ≈ 1.0 × 10⁻⁴ mol/L

Therefore, the molar solubility of La(IO₃)₃ in pure water is approximately 1.0 × 10⁻⁴ mol/L.

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The sign of the vertical position is positive, velocity is negative, and acceleration during the downward part of the trajectory of the ball is negative.

option B is the correct answer.

During a projectile motion, the vertical velocity of a projectile decreases as the projectile moves upwards and eventually become zero as the object reaches the maximum height.

As the object begins move downwards, the vertical velocity of the projectile increases and eventually becomes maximum before the object hits the ground.

During the horizontal motion of a projectile, the horizontal velocity of the projectile does not change. That is the initial horizontal velocity of the projectile equals the final horizontal velocity of the projectile.

Thus, we can conclude the following about the signs, as the ball falls down;

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