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Answer:

A. The kinetic energy increases as its speed increases.

Explanation:

The kinetic energy of an object is energy possessed by an object by virtue of its motion.

Now, kinetic energy of a moving body is given by;

KE = 1/2 mv^2

Where;

m = mass of the body

v = velocity (speed) of the body

It follows that if the mass of the spaceship is constant, a sudden increase in speed leads to a corresponding increase in the kinetic energy of the spaceship in accordance with the relationship show above.

Answer:

You'll speed up! A. Because the kinetic energy increases as its speed increases.

Explanation:

Answer:

abc

Explanation:

Answer:

evaluation

Explanation: Big brain

Answer: In the same Group

Explanation: Elements in the same group (row going down) have the same number of valance electrons. These valance electrons dictate their chemical properties and how they react with other elements/compounds.

Answer:

The alteration of the rate of the chemical reaction by the addition of a catalyst will change the dimension of L

Explanation:

The parts of the Energy profile of a reaction diagram the given letters represent are;

K = The energy possessed by the reactants

L = Activation energy required for the reaction to take place

M = Energy threshold required for the reaction to take place

N = The change in the enthalpy from the reactants to the products, which is also the energy released

O = The energy possessed by the products

The addition of a catalyst changes the route with which the reaction takes place such that the reaction rate is increased because the activation energy, L, is reduced.

Therefore, the dimension that will be changed if the rate of reaction were to be altered by a catalyst is L.

Answer:

B: +3

Explanation:

If Gallium loses 3 electrons, it will become an ion.

The ion will be positively charged because in this new ion, the number of electrons is lesser than the number of protons. The charge difference will impart a positive net charge on the ion.

If Gallium the loss of 3 electrons offsets the charge balance in the chemical specie. Thus, the ion will have a net +3 charge.

Answer:

The process of a solid becoming a liquid is called melting. (an older term that you may see sometimes is fusion). The opposite process, a liquid becoming a solid, is called solidification. For any pure substance, the temperature at which melting occurs—known as the melting point—is a characteristic of that substance.

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Answer:

Explanation: Analog signal is continuous in nature as it is well defined for every specific time. More specifically, it is the one defined continuously for a range of values with time. These are represented as a sinusoidal waveform. The figure below represents an analog signal:

analog signal

As we can see here that the signal is continuous in nature as its every value is specified for each particular interval of time, thus, is referred as the continuous-time signal. For the purpose of recording the analog signals, the actual signal must be preserved as only in that case we can record the accurate analog signal.

However, whenever in any application there arises a need to change an analog signal into a digital one then through sampling this can be achieved. In the sampling technique, this signal is sampled at certain fixed time intervals and the sampled voltage is converted into digital values.

Definition of Digital Signal

A type of signal which is non-continuous in nature as it is defined only for a set of discrete times is known as a digital signal. More simply, we can say, it is specified at some particular time instants only. Thus, here the information is represented as a set of discrete values. The figure given below shows the signal representation in digital form:

digital signal

Here it is clear that the data is discretely positioned in time axis thus is shown in the form of bits i.e., 0 and 1. This means that here the signal performs the sudden transition between 0 and 1 where these two values correspond to the two voltage levels. For the purpose of recording the signals, in the digital one, only the samples of the actual signal are taken and not the whole signal.

Key Differences Between Analog and Digital Signal

Analog and digital signals are differentiated mainly on the basis of their way to carry the information. Analog signals represent the information as a continuous function of time. As against, digital signals are represented discretely at specific time intervals.

Analog signals deteriorate more easily than digital one as their susceptibility towards noise is higher.

The devices that operate on an analog signal need more power for transmission and reception than the devices that work on the digital signal.

The information represented by the analog signal is comparatively more accurate than the digital signal due to its continuous range of values.

Analog signals are transmitted at a slower rate than digital signals as the information holds more values thus is precise.

An analog signal is defined by the amplitude, phase, frequency, etc. While the digital signal is mainly associated with bit rate, bit intervals, etc.

The sinusoidal representation of the analog signal makes it difficult to understand or get decoded thus encryption is not required in analog signals. But as the digital signals are in the form of square waves, thus, it can be decoded easily hence need to be encrypted for secured communication.

On the basis of processing, it is said that the continuous nature of the signal offers easy processing of the analog signal. However, the discrete nature of the signal offers difficultly in the processing of the digital signal.

Conclusion

Thus, the above discussion concludes that due to the way of representing the signal, the two are differentiated. And because of this, the two types of signals possess different properties and are used in different applications. Like analog signals are used in radio wave transmission and reception whereas digital signals are used in the field of digital electronics.

Answer:

Explanation:

Titanium is an element found in the d-block group on the periodic table. It is a transition element.

To write the electronic configuration of an element, we must know the number of electrons in them;

 In a titanium atom, we have 22 electrons;

Shell notation  = 2  8  10 2  

Orbital notation  = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d² 4s²

Answer: [Ar]4s^2 3d^2

Explanation:

Answer:

Boom

Explanation:

The bomb is big and it goes boom and it also creates nuclear fragments everywhere

Number of charge = 5018 C

Given

1000 C of charge for x grams of copper

Required

Number of charge

Solution

Faraday's Law :

[tex]\tt W=\dfrac{e.i.t}{96500}\\\\W=\dfrac{e.Q}{96500}[/tex]

For 1000 C, W = x grams

[tex]\tt x=\dfrac{1000.e}{96500}=0.0104e[/tex]

For 5x grams :

[tex]\tt 5x=\dfrac{e.Q}{96500}\\\\5\times 0.0104e=\dfrac{e.Q}{96500}\\\\Q=\dfrac{96500\times 5\times 0.0104e}{e}=5018~C[/tex]

Answer:

False

Explanation:

They are not the same color since they do not all have the same temperature

Temperature defines their color

Answer:

The longer it takes to orbit the sun.

Explanation:

Answer:

Aluminum Metal

Explanation:

A P E X states that it is Aluminum Metal 100% right

The balanced equation :

2C₃H₇OH+9O₂⇒ 6CO₂ +8H₂O​​

Given

The following reaction(combustion of Propanol) :

C₃H₇OH+O₂⇒ CO₂ +H₂O​

Required

Balanced equation

Solution

Equalization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:  

• 1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc.  

• 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product  

• 3. Select the coefficient of the substance with the most complex chemical formula equal to 1  

1. Give coefficient

C₃H₇OH+aO₂⇒ bCO₂ +cH₂O​

2. Make an equation

C, left=3, right=b⇒b=3

H, left=8, right=2c⇒2c=8⇒c=4

O, left=1+2a, right=2b+c⇒1+2a=2b+c⇒1+2a=2.3+4⇒1+2a=10⇒2a=9⇒a=9/2

The equation becomes

C₃H₇OH+9/2O₂⇒ 3CO₂ +4H₂O x 2

2C₃H₇OH+9O₂⇒ 6CO₂ +8H₂O​​

Answer:

A

B

A

B

B

Explanation:

B - MIXTURE

A - COMPOUND

Incomplete question. Options;

A) Mass is created and energy is released.

B) Mass is created and energy is stored.

C) Mass is converted to energy, which is released.

D) Mass is converted to energy, which is stored.

Answer:

Mass is converted to energy, which is released

Explanation:

Basically, when uncontrolled nuclear fission (splitting) occurs, a radioactive atom (a mass) is split into two smaller nuclei leading to a continuous chain of fission reactions.

In other words, as the fission of the mass of the atom continues to occur, the mass is converted to energy, which is then released and more reactions occur.

Answer:

161.69×10²³ molecules

Explanation:

Given data:

Volume of water = 499.8 mL

Density of water = 0.967 g/mL

Number of molecules of water = ?

Solution:

First of all we will calculate the mass of water.

Density = mass/volume

0.967 g/mL = mass/499.8 mL

Mass = 0.967 g/mL × 499.8 mL

Mass = 483.3 g

Number of moles of water:

Number of moles = mass/molar mass

Number of moles =  483.30 g / 18 g/mol

Number of moles = 26.85 mol

1 mole contain 6.022×10²³ molecules

26.85 mol ×6.022×10²³ molecules / 1mol

161.69×10²³ molecules

Answer:

density of water at 4.00c  is 0.967 g/mL. Volume of water=499.8mL

Mass of water=density x volume= 0.967 x 499.8=483.3066g

Number of moles of water molecules in given of water = givenmass/molarmass=483.3066/18=26.85

we know that 1 mole has 6.022 x 1023  molecules of water  

so  the number of water=6.022 x 1023  x 26.85=161.69 x 1023 =1.62 x 1025  molecules of water is its upto 3 significant figure.

Explanation:

Answer:

the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.

Explanation:

In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.

Answer:

The answer is B

Explanation:

Molar mass of O2: 32g/mol

Moles of O2 = 19.5 / 32 = 0.609mol

Answer:

It covers changes to the position of equilibrium if you change concentration, pressure or temperature. ... If a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract the change

Explanation:

Answer:

4.6 kJ

Explanation:

The energy required to raise the temperature of a substance from its initial temperature to a final temperature is given by:

Q = mcΔT

Where Q = energy, c = specific heat capacity of substance and ΔT = final temperature - initial temperature

Given that:

c = 2.1 kJ/kg°C, m = 87.5 = 0.0875 kg, ΔT = final temperature - initial temperature  = 0 - (-25) = 25

Q = 0.0875 * 2.1 *25

Q = 4.6 kJ

Answer:

thunderstorms

Explanation: