a neutron star is the remnant left after certain supernovae (explosions of giant stars). typically, neutron stars are about 21 km in diameter and have around the same mass as our sun. what is a typical neutron star density in g/cm3 ?

Answer:v=l x w x h

Explanation:

h=height

w=width

l=length

Answer:

24.108 cm3

Explanation:

4.1x2.8x2.1

24.108cm3

Answer: 0.308

Explanation:

acellus

Answer:

2.22m/s^2

Explanation:

As no specific power series is given, it is impossible to determine the convergence set. The convergence set of a power series depends on its coefficients and the variable it is being evaluated at. The convergence set can be determined using various tests such as the ratio test, root test, or comparison test. The radius of convergence can also be found using the ratio or root test. If the convergence set is the entire real line, the power series is said to converge everywhere, while if it is empty, the power series does not converge anywhere.

In summary, the convergence set of a power series depends on its coefficients and variable. Various tests can be used to determine the convergence set, and if the set is the entire real line, the power series converges everywhere, while if it is empty, the power series does not converge anywhere.

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The substance will be reduced to 1/16 of A present, that is 1 lb, in 95 hours.

Let the initial amount of A present be X lb. The rate of decomposition of A is proportional to the amount of A present. Therefore, the rate of decomposition = k * X where k is the proportionality constant. We know that 1 lb of A will reduce to 4 lb in 38 hours. So, the rate of decomposition = X/38.

Also, the rate of decomposition = k * X. Comparing both the equations, k = 1/38. Therefore, the rate of decomposition = X/38A substance will reduce to 1/16 of A present i.e., X/16. Using the equation for the rate of decomposition, we get, X/16 = (1/38)*X*(t). Simplifying, we get t = 95 hrs. Hence, the substance will be reduced to 1/16 of A present, that is 1 lb, in 95 hours.

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The electric flux through each face of the cube is Φface = 2 * (8.99 × 10^9 Nm^2/C^2) * (5.00 × 10^−12 C) / a

Property of an electric field that may be thought of as the number of electric lines of force that intersect a given area is called electric flux .

The electric flux through each face of the cube can be calculated using:

Φ = EA

Φ is electric flux, E is electric field strength at the surface, and A is area of the surface

E = kQ/r^2

where k is the Coulomb constant, Q is the charge of the point, and r is the distance from the point to the surface. For a cube of side length a, r is equal to a/2.

Φ = kQA/r^2 = kQA/(a/2)^2 = 2kQA/a^2

Since each face of the cube has an area of a^2, the electric flux through each face is:

Φface = 2kQ/a

Φface = 2 * (8.99 × 10^9 Nm^2/C^2) * (5.00 × 10^−12 C) / a

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The information which would be considered in deciding what should be done in restoring everglades is the cost, terrain and environmental effects.

This is referred to a natural region of tropical wetlands which can be found in the southern region of the U.S. state of Florida. It is home to a lot of organisms ranging from plants to animals which ensures that they survive the various conditions due to the availability of nutrients etc.

The information which would be considered in deciding what should be done in restoring everglades is the cost as a cheap reliable method is preferable and also the effect on the environment as a whole.

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ANSWER

Q = 5303.95 kJ

EXPLANATION

We are looking for the energy needed to evaporate 2.35kg of water. Since the water is already at evaporation temperature, which is 100°C, we just have to use latent heat. Also, we just want the steam to be at 100°C, so we don't need to find the energy to change its temperature.

The energy needed to evaporate water of mass m is:

L is the latent heat of the material, in this case water. There are two latent heats, one of fusion and one of vaporization. We have to use the second one, which for water is approximately 2257 kJ/kg

Therefore, to boil 2.35 kg of water at 100°C to steam at 100°C we need:

The acceleration of the ball is zero.

The term acceleration refers to the rate of change of velocity with time thus we can write;

a = d(v)/dt. This simply means the change in velocity with respect to time in the calculus notation.

This implies that before we can talk of acceleration the velocity must be changing. We can not have acceleration when the velocity is constant. It violates the very definition of acceleration. As such, the acceleration of the ball is zero.

Thus whether over a period of three seconds or over an infinite period of time, the acceleration would remain zero because the velocity is constant and does not change over the time interval as given.

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Explanation:

Generally, stream flows are measured in CFS   = Cubic Feet per Second

Answer:

metal, metalloid, and non-metals are the 3 regions on the periodic table

Explanation:

Answer:

Halogens, Akali, and noble gases

Explanation:

Answer:

600N.

Explanation:

From the question, we are to calculate the net force acting on the car.

According to Newton's second law of motion:

F = ma

m is the mass of the car

a is the acceleration = change in velocity/Time

a = v-u/t

F = m(v-u)/t

v is the final velocity = 30m/s

u is the initial velocity = 20m/s

t is the time = 5secs

m = 300kg

Get the net force:

Recall that: F = m(v-u)/t

F  = 300(30-20)/5

F = 60(30-20)

F = 60(10)

F = 600N

Hence the net force acting on the car is 600N.

Answer:

4. y = 2.38333t - 26.55 is the answer.

When a car drives at 10 m/s, it requires 20 meters to stop. However, if the car were driving at 30 m/s, it would need 360 meters to come to a stop. This demonstrates that as the initial speed increases, the distance required to stop also increases.

The distance required for a car to come to a stop depends on its initial speed and the braking force applied. In this scenario, we know that a car driving at 10 m/s needs 20 m to stop on dry asphalt.
To find out how much distance the car would need to stop if it were driving at 30 m/s, we can use the concept of deceleration.
Deceleration is the rate at which an object slows down. It is equal to the change in velocity divided by the time taken. In this case, the change in velocity is from 30 m/s to 0 m/s.
To find the time taken, we can use the equation:
time = change in velocity / acceleration
Since the car is coming to a stop, the final velocity is 0 m/s. Therefore, the change in velocity is -30 m/s.
Substituting these values, we get:
time = -30 m/s / acceleration
Now, to find the distance required to stop, we can use the equation:
distance = initial velocity * time + 0.5 * acceleration * time^2
Substituting the values, we get: distance = 30 m/s * (-30 m/s / acceleration) + 0.5 * acceleration * (-30 m/s / acceleration)^2 Simplifying the equation, we get:
distance = -900 m^2/s^2 / acceleration + 450 m
Since the acceleration is the same for both cases (10 m/s^2), we can substitute this value into the equation:
distance = -900 m^2/s^2 / 10 m/s^2 + 450 m
Simplifying further, we get:
distance = -90 m + 450 m
distance = 360 m
Therefore, if the car were instead driving at 30 m/s, it would need 360 meters to come to a stop.

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Answer:

B

Explanation:

selenium is the right answer.

Answer:

A. Their shape

Explanation:

The name clearly shows that the shape of these canals are semi-circular. The semi-circular canals consist of three tubes filled with fluid and located in the inner ear. They help to maintain balance and transmit impulses through the movement of the fluids. The impulses sent through these fluids are sent to the brain for interpretation.

The function of the canals are not indicated by the name, rather the shape is hinted through the name.

After 10 seconds, the final speed is 32 m/s.After 10 seconds, the displacement is 170 m.

After 10 seconds, the object's final velocity can be calculated as follows:

Initially traveling at 2 m/s

a = 3 m/s for acceleration

Time (t) equals ten seconds.

Final velocity (v) =

v = u + at

v = 2 + (3 × 10)

v = 2 + 30

v = 32 m/s

Consequently, the object's terminal velocity is 32 m/s.

2. Methods for calculating displacement

After 10 seconds, the object's displacement can be calculated as follows:

Initial speed (u) equals 2 m/s

Final speed (v) is 32 m/s.

The speed of sound is 3 m/s2.

Relocation (s) =

v² = u² + 2as

32² = 2² + (2 × 3 × s)

1024 = 4 + 6s

assemble similar terms

1024 - 4 = 6s

1020 = 6s

6 divided by both sides

s = 1020 / 6

s = 170 m

The displacement is 170 m as a result.

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Answer:

Increase the amount of gas

Explanation:

By increasing the pressure of the solution, the amount of gas will have to increase. Solubility of gases increases as the pressure is made to increase. Before the pressure was increased, the gases moved freely about. But as it was increased, theses gases had more frequent collisions within this solution. Causing an increase. The liquid on its own will experience no changes.

Answer:

Increase the amount of gas

Explanation:

Answer:

Average speed = 0, Average velocity = 0.02 m/s

Explanation:

Given that,

A car travels from A to B and from B back to A.

The distance between A and B is 12 km

It took 20 minutes to travel full.

We need to find the average speed and the average velocity of the car.

As the car reaches the point from where it was started, the displacement of the car is equal to 0. As a result, the average velocity is equal to 0.

For average speed,

\(s=\dfrac{12+12}{60\times 20}\\\\s=0.02\ m/s\)

Hence, this is the required solution.

In the process of making pancakes, the three steps that best show that new substances are created are: Steps 3, 4, and 5. The correct option is B.

These steps involve seeing bubbles form as the pancake starts to harden, waiting until the bubbles stop forming, and flipping the pancake so the other side can darken and harden.

During Step 3, the formation of bubbles indicates a chemical reaction taking place, as the heat causes the pancake batter to release carbon dioxide gas. This leads to the creation of a new substance: the cooked pancake. Step 4, waiting for the bubbles to stop forming, further demonstrates the chemical changes occurring as the batter continues to cook and transform.

Lastly, in Step 5, flipping the pancake allows the other side to darken and harden, completing the cooking process and solidifying the new substance: a fully cooked pancake. The correct option is B.

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A collision that is fully elastic is one where there is no kinetic energy lost during the contact. In an inelastic collision, a proportion of the energy is converted into another kind of energy during the contact.

In elastic collisions, kinetic energy and momentum are both conserved. Consider two similar trolleys that are moving in the same direction at the same pace. With no loss of speed, they collide and bounce off one another. Since no power has been lost, this collision is fully elastic.

photo of A description of completely elastic collision

When a system's maximal quantity of kinetic energy is equal to zero, a relatively inelastic collision takes place.

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A collision that is fully elastic is one where there is no kinetic energy lost during the contact. In an inelastic collision, a proportion of the energy is converted into another kind of energy during the contact.

In elastic collisions, kinetic energy and momentum are both conserved. Consider two similar trolleys that are moving in the same direction at the same pace. With no loss of speed, they collide and bounce off one another. Since no power has been lost, this collision is fully elastic.

photo of A description of completely elastic collision

When a system's maximal quantity of kinetic energy is equal to zero, a relatively inelastic collision takes place.

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The ball will hit the ground in a time closest to 4.06 seconds To solve this problem, we need to use the kinematic equations of motion. The initial velocity of the ball is 20 m/s and it is thrown straight up, which means the initial velocity in the y-direction is also 20 m/s.

The acceleration due to gravity is -9.8 m/s^2. Using the kinematic equation, h = vt + 1/2at^2, we can find the maximum height the ball reaches, which is approximately 40.4 m.

Next, we need to find the time it takes for the ball to hit the ground. Using the kinematic equation, h = 1/2at^2, we can find the time it takes for the ball to reach the same height as the cliff edge, which is approximately 2.03 seconds.

Now, we can use the kinematic equation, d = vt, to find the distance the ball travels horizontally before hitting the ground. The time it takes for the ball to hit the ground is twice the time it takes to reach the same height as the cliff edge, which is approximately 4.06 seconds.

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Answer:

electric stuff

Explanation:

I didn't see any option choices so srry

For the purpose of lifting heavy loads, a block and tackle pulley system consists of two or more pulleys connected by rope or cable. These pulleys are put in a block configuration and connected so that one pulley is stationary and moves with a load.

Threading the rope through the pulley, which increases the force applied to the rope, provides mechanical advantage. Usually, heavy lifting or applying a lot of force in either direction requires the employment of these pulleys.

Examples of block and tackle pulleys are shown below.

Step pulley

This can be thought of as a collection of pulleys. With pulleys of various diameters fixed in order, pulley faces are converted into step pulleys. It is known as a step pulley because of the way it is constructed.

“V” Groove Pulley

This pulley's face has a groove cut into it that resembles the English letter "V." Both electric motors and cars use it. These pulleys utilize a unique "V"-shaped belt. More than one "V" groove may be cut in some pulleys.

These pulley types are utilized for heavy duty power transfer. Less power slippage is possible when many "V" belts are being used.

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Pilots rely on accurate systems to navigate in conditions with reduced visibility. These systems play a crucial role in ensuring the safety and precision of flight operations.

Pilots largely rely on a variety of onboard equipment and instruments to advise them in scenarios like low visibility weather or nighttime flight. These systems include, among other things, devices like altimeters, gyroscopes, and autopilot systems. They help pilots retain situational awareness and accurately navigate by providing vital information regarding the position, altitude, speed, and direction of the aircraft. Furthermore, cutting-edge technology like GPS (Global Positioning System) that provide real-time positioning information further improve navigational capabilities.

These systems must be extremely precise to guarantee that the aircraft follows the intended flight route and avoids potential hazards or collisions with other aircraft. Pilots must rely on these devices to maintain the necessary spacing from other aircraft and to carry out safe takeoffs, landings, and manoeuvres when there is little visibility, such as during fog or dense clouds.

In conclusion, when vision is poor, pilots heavily rely on precision systems to navigate safely and accurately. These technologies offer important information and direction, enabling pilots to maintain control and make wise choices in difficult circumstances.

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Answer:

La opción correcta es la A) 22 km y 78 km.

Explanation:

Dado que el desplazamiento (D) es un vector, su valor viene dado por la suma algebraica de los vectores del desplazamiento de ambos tramos.

Como en el primer tramo movil se mueve en la dirección de x-positiva y en el segundo tramo se mueve en el sentido de x-negativo, tenemos:

\( D = (60 km - 10 km) - (60 km - 32 km) = 22 km \)  

Ahora, la distancia (d) es una magnitud escalar, por lo que su valor viene dado por la suma del desplazamiento de ambos tramos:

\( d = (60 km - 10 km) + (60 km - 32 km) = 78 km \)                

Por lo tanto, la opción correcta es la opción A) 22 km y 78 km.

Espero que te sea de utilidad!                              

Answer:

\(\boxed {\tt 108.695652 \ cm^3}\)

Explanation:

Volume can be found by dividing the mass by the density.

\(v=\frac{m}{d}\)

The mass is 100 grams and density is 0.920 grams per cubic centimeters.

Therefore,

\(m=100 \ g \\d= 0.920 \ g/cm^3\)

Substitute the values into the formula.

\(v=\frac{100 \ g}{0.920 \ g/cm^3}\)

Divide. Note that the grams, or "g" will cancel each other out.

\(v- 108.695652 \ cm^3\)

The volume of the ice cube is 108.697652 cubic centimeters.