How much heat in joules must be added to 1.073 kg of boryfium to change it from a solid at 914"С to a liquid at 1285 C (its melting point)? For beryllium b= 135x10Jg. L, 3.24x10 JA, C = 1820 kg C Uni

The speed of the ball, after it bounces back elastically toward you, is approximately 68333.33 m/s.

Initially, the rhino and the ball are moving in opposite directions, so their total momentum is zero. After the collision, the ball bounces back, and the rhino continues moving forward.

Let's calculate the momentum of the rhino before the collision:

Momentum of the rhino = mass of the rhino × velocity of the rhino

= 3000 kg × 4.10 m/s

= 12300 kg·m/s

According to the principle of conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision. Since the rhino continues moving forward, the ball's momentum must be equal in magnitude but opposite in direction.

Let's denote the final velocity of the ball as v:

Total momentum after the collision = momentum of the rhino + momentum of the ball

= 0 + (mass of the ball × final velocity of the ball)

= 0.180 kg × v

Setting the initial and final momenta equal, we have:

12300 kg·m/s = 0.180 kg × v

Solving for v, we find:

v = 12300 kg·m/s / 0.180 kg

v ≈ 68333.33 m/s speed of ball

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We will have the following:

1. 143 g = 0.143 kg:

2. 110 g = 0.110 kg:

3. 410 g = 0.410 kg:

4. 46 g = 0.046 kg:

From this we can see that the given weights do not correspond to any of the values of column B, since the calculations to obtain the values of column B were done using grams, instead of kg, thus those values do not correspond to the unit of force Newtons.

Answer:

Density

Explanation:

Density is a property that will allow for a possible identification of a material.  Different materials have different densities.  The unit for density is g/cm^3

Answer:

D

Explanation:

The magnitude of the electric field between the plates is 1.25 x × 10⁴ N/C.

Electric field - Every point in space where a charge, in any form, is present has an electric property that is called an electric field.

The magnitude of the electric field strength is given as :

E = F/q

where

E = electric field

F = electrostatic force

q = charge

electron experiences a force of as it accelerates between two metal plates =  2 x 10⁻¹⁵ N

Charge of the electron,

q = 1.6 × 10⁻¹⁹ C

Then

E = (2 x 10⁻¹⁵ N)÷(1.6 × 10⁻¹⁹ C)

E = 1.25 x × 10⁴ N/C.

The magnitude of the electric field between the plates is 1.25 x × 10⁴ N/C.

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One way to test this hypothesis would be to conduct an experiment in which water is subjected to light sources of varying intensity.

Photosynthesis is a process used by plants and some other organisms to convert light energy, typically from the sun, into chemical energy that can be used to fuel biological processes. During photosynthesis, light energy is absorbed by chlorophyll molecules in the plant's leaves and is then used to convert carbon dioxide and water into sugars and oxygen. This process provides the oxygen we breathe and the food we eat, making it one of the most important processes on Earth.

During the experiment, the rate of hydrolisis can be measured, and this data can then be compared to determine if the energy from the solar source is required for hydrolisis. Additionally, a control experiment can be conducted using light sources that do not contain solar energy, such as a light bulb, to compare to the solar energy experiment. This will allow scientists to determine the effect of the solar energy on the rate of hydrolisis, and confirm or refute the hypothesis.

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The sentence that best shows the significance of Rider giving Margie the stone is "the stone is an offering that helps bridge the distance between the siblings."

This sentence implies that there is some sort of emotional or physical distance between Rider and Margie, and the stone serves as a gesture to bring them closer together. The word "offering" suggests that the stone is given with a sense of purpose or intention, rather than just being a random object. By using the phrase "bridge the distance," it also implies that the siblings are not as close as they could be, and the stone serves as a way to strengthen their relationship. Overall, this sentence shows that the stone has a deeper meaning beyond just being a simple object, and serves as a symbol of connection and closeness between Rider and Margie.

This sentence captures the essence of the gesture, as it emphasizes the emotional connection between Rider and Margie and how the stone serves as a means to strengthen their bond despite the physical distance between them.

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In the inner regions of the solar nebula, where temperatures were very high, only materials with very high melting points could remain solid.

In the inner regions of the solar nebula, where temperatures were very high, only materials with very high melting points could remain solid. Some examples of solid materials that could exist in these conditions include refractory minerals such as corundum (Al2O3), enstatite (MgSiO3), and forsterite (Mg2SiO4). These materials have high melting points due to their strong ionic or covalent bonds, which can resist the high temperatures and keep them in a solid state.

Other materials that could exist in solid form in the inner regions of the nebula include metals such as iron and nickel, which have high melting points and can form solid particles via condensation or accretion. However, the abundance of metals in the nebula is thought to be relatively low compared to the abundance of refractory minerals, as metals tend to be more easily vaporized at high temperatures.

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Answer:

The object will have a constant acceleration.

Explanation:

F = ma, a = F/m, F amd m are both constant, so a = constant.

Answer: and apple on the tree is gravitational and potential

fully charged camera battery is electric/ potential energy a man jogging is motion energy and a stove burner that is turned on is radiation energy

Explanation:

hope this helps

A diver can regulate his rate of rotation and reach the water in a vertical position because his angular momentum stays constant while he is in the air. This information makes it easier for us to comprehend how this is possible.

As a result, Option D is accurate.

The rotating counterpart of linear momentum in physics is called angular momentum. Given that the total angular momentum is conserved, or remains constant in a closed system, it is an important physical quantity. By dividing the rotational inertia of an item by the angular velocity, one may get its angular momentum. The angular velocity of an item is used to calculate its rotational speed. An object's rotational inertia is what makes turning it challenging. On an ice rink or in an office, someone spinning

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Answer:

The Earth spins on its axis once a day.

Explanation:

In simple words,The Earth revolves on its axis once every 24 hours and circles the sun once every 365 days. The Earth's rotation on its axis, not its orbit throughout the sun causes day as well as night. The word 'one day' refers to the period it requires the Earth to spin entirely on its axis, which involves both day as well as night.

Answer:

I think the answer is C too

Yttrium's electronic configuration is [Kr] 4d^1 5s^2, while silver's is [Kr] 4d^10 5s^1. The difference arises from the order of filling: yttrium fills the 4d orbital before the 5s orbital, while silver fills the 4d orbital completely before filling the 5s orbital.

Yttrium and silver are elements that have different electron configurations despite having similar electron structure.  The electronic configuration of the yttrium atom [Kr] 4d¹5s¹ is different from that of the silver atom [Kr]4d¹⁰5s¹.

Let us understand why the electronic configuration of the yttrium atom [Kr] 4d¹5s¹ is different from that of the silver atom [Kr]4d¹⁰5s¹.

The difference in electronic configuration is due to the fact that silver has a complete d sub-shell (d¹⁰), while yttrium has an incomplete d sub-shell (d¹).

Since the 5s and 4d orbitals are very close in energy, there is a chance that the electron in the 5s orbital will move to the 4d orbital to form a stable sub-shell when the d sub-shell is filled to d¹⁰. This occurs because the half-filled and fully-filled d sub-shells are more stable than other configurations.

This phenomenon is known as the exchange energy or the crystal field stabilization energy.

As a result, yttrium loses the 5s electron before it loses the 4d electron due to the higher stability of the half-filled 4d sub-shell. The stability of the half-filled d sub-shell is the reason why the electronic configuration of yttrium is different from that of silver.

Therefore, this is the explanation of why the electronic configuration of the yttrium atom [Kr] 4d¹5s¹ is different from that of the silver atom [Kr]4d¹⁰5s¹.

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When NaOH is added to water, it separates into Na+ and OH-. The hydroxyls make it more basic.

A basic solution is an aqueous solution containing more OH⁻ ions than H⁺ ions.

When NaOH as a solute is mixed into the solvent like water, it separates NaOH into Na+ and OH-. The sodium ions Na⁺ have little effect on the solution, but the hydroxyls OH⁻ ions makes the solution more basic.

Thus, NaOH form a basic solution by the presence of OH⁻ ions  into it.

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Answer:12

Explanation:

Answer:

Average speed 62.5 miles an hour.  If the train was traveling at a constant speed in a straight line it would be much faster on getting to its destination

Explanation:

Answer:

C

Explanation:

elements are classified as covalent, ionic, metallic

The temperature of hot reservoir is 74.607 K.

Given- Engine does W=18500 J

Heat =6550 J

Temperature T2 = 285K

This is sink temperature.

To find the temperature of hot reservoir we need to employ the following points -

Calculations-

\(\alpha =\frac{dW}{dQ}\)

=18500/6550

Efficiency ⇒ α=2.82

\(\alpha =1-\frac{T2}{T1}\)

2.82= 1- 285/T1

2.82+1= -285/T1

3.82= -285/T1

T1= 285/3.82

=74.607 K

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Answer:

C

Explanation:

The substances are changed.

A chemical equation describes a chemical reaction. Reactants are starting materials and are written on the left-hand side of the equation. Products are the end result of the reaction and are written on the right-hand side of the equation .

Answer:

130 N basically

Explanation:

Answer:

Explanation:

If the material carried by the solar wind reached a planet's surface, its radiation would do severe damage to all life that exists on earth.

Thankfully that won't happen because Earth's magnetic field serves as a shield, redirecting the material around the planet so that it streams beyond it.

HOPE THIS HELPED!!!

Answer: 60 m/s

Explanation: If the bus is traveling at 50 m/s, and it accelerates uniformly at 5m/s for 2 seconds, that means it gained 5 m/s for every second it accelerated. We know both the rate the bus accelerated at and how long it accelerated for. All you have to do to solve this problem is figure out how much speed the bus gained and then add that to the original speed. 5*2=10, so the bus gained 10 m/s during 2 seconds of acceleration. 50+10=60, so the bus is now traveling at 60 m/s.

The best material for achieving thermal equilibrium can be determined by analyzing the data table. The time taken for each object to reach thermal equilibrium is dependent on the material used to divide them.

Material C appears to be the best as it takes the least amount of time for the objects to reach thermal equilibrium.  

Based on the given information, the material that results in the shortest time to reach thermal equilibrium would be considered the best thermal conductor. To determine this, compare the times in the data table for materials A, B, and C. The material with the shortest time to reach thermal equilibrium is the best thermal conductor and, therefore, the best material for this experiment.

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Changing the sign of one charge will cause the force between the two charges to switch from attraction to repulsion or vice versa.


When the sign of one of the charges is changed, the force between the two charges will also change.

If the charges were initially both positive or both negative, they would repel each other.

However, if one charge is changed to the opposite sign, they will now attract each other due to the difference in their charges.

Conversely, if the charges were initially opposite and attracting each other, changing the sign of one charge will cause them to repel instead.

This is because the force between charged particles depends on the product of their charges, and a change in sign alters this product's sign.

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First, the size of Jupiter means that it has a larger core than the other planets.

A larger core means more core particles are interacting to generate a stronger electrical current. The other factor is the speed of Jupiter's rotation. Jupiter's strong magnetic field is generated in Jupiter's thick layers of metallic hydrogen.

Its magnetic field creates a magnetosphere to surround the planet and shield it from solar winds. It traps more charged particles than Earth's. They create belts of intense radiation around Jupiter.

The strong magnetic field is produced by the rotation of the planet and convection in a metallic core. Because Jupiter is so large and spins so fast, its magnetic field is very strong. It is over 20,000 times stronger than Earth's.

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