Which of the following statements is TRUE in regards to Signal #2?

1) Signal #2 is a digital signal that transmits signals continuously.


2) Signal #2 is a digital signal that transmits signals in segments/intervals.


3) Signal #2 is an analog signal that transmits signals continuously.


4) Signal #2 is an analog signal that transmits signals in segments/intervals.

Answer:

I'm positive it's the last one

Explanation:

Answer:

The earliest ideas of charge were result of experiments by William Gilbert

Answer:

William Gilbert

Answer: The object moved 2 metres away

Explanation:

Given that the

Force applied F = 20 N

Work done W = 40 J

From the definition of workdone which state that: product of force and distance

W.D = F × S

Where S = distance

S = W.D/F

S = 40/20 = 2 metres

The object moved 2 metres away.

The energy of a wave will increase with an increase in amplitude when the wave's speed is held constant. The amplitude of a wave is directly proportional to the energy it carries.

Explanation:

The energy of a wave is influenced by various factors such as its amplitude, frequency, wavelength, and speed. The question specifically focuses on how the energy will change, assuming speed is constant. Given a constant wave speed, it is the amplitude of the wave that, when increased, will result in an increase in the wave's energy. The amplitude is directly proportional to the energy carried by a wave – the greater the amplitude, the more energy the wave carries.

For mechanical waves, the energy transferred is proportional to both the square of the wave's amplitude and the square of its frequency. This means that if the frequency of the wave is doubled, the energy increases by a factor of four, assuming the amplitude remains the same. However, if the speed is kept constant, the energy increase resulting from an increase in frequency must be exchanged with a decrease in wavelength due to their inverse relationship. The essential point to remember is that, with speed being constant, increasing the amplitude of a wave will directly lead to an increase in its energy.

Answer:

they say yum yum as they eat planets and make humans starve

Explanation:

but they still eat them

Answer:

Large swarms of locusts can completely strip the foliage and stems of plants such as forbs and grasses. ... They often eat dry plant matter on the ground and will forage for weak or dead grasshoppers when plant food is scarce. As nymphs have a large appetite, they cause more damage than adults.

Explanation:

Answer:

what are simple machines lol

Explanation:

Answer:

the answer is B: electrons

Explanation:

Answer:

c

Explanation:

Answer: The internal heat energy of the boat heat engine, metamorphoses into mechanical workdone that causes the boat to move.

Explanation: First law of thermodynamics tells us that energy cannot be created nor destroyed, it can only be transformed from one form to another.

The internal heat energy of the boat heat engine, metamorphoses into mechanical workdone that causes the boat to move.

According to the second law of thermodynamics which state that when energy changes from one form to another form, or matter moves freely, entropy (disorder) in a closed system increases. Differences in temperature, pressure, and density tend to even out horizontally after a while

Answer: Neighbour

Explanation: Taken perspective from the given clues:

The Neighbor walks to work 

The Handyman rides a bike 

The Cook rides a motorcycle 

The Maid drives a car 

The Nephew has a dog

If we assume that the handyman delivered the iPad in the mailbox, then

The direction of the cook, Nephew and his dog are perpendicular to the direction of the bike of the handyman. So, it can't be the cook, Nephew and the maid.

The two suspects are the handyman and the neighbour.

If the handyman actually dropped the iPad and left, then, the neighbour should be the culprit.

Answer:

1.8

Explanation:

Kaya collects the data where the voltage is 6 V also the current is 0.3 A then the resistance in the circuit will be 20 ohms. Hence, option D is correct.

When put in an electromagnetic field, charged matter experiences a force due to the fundamental property of electric charge. Positive or negative electrical ions are possible. When two charges are in opposition to one another, they repel one another.

The term "neutral" refers to an object that has no net charge. The early understanding of the way charged particles interact is now referred to as classical electrodynamics, and it is still true for issues that do not demand taking into account quant phenomena.

As per the given information in the question,

Voltage, V = 6 V

Current, I = 0.3 A

Use the equation of ohm's law,

V = RI

6 V = R(0.3)

R = 6/0.3

R = 20 Ω.

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Answer:

Explanation:

Given that,

The temperature of atom is 21°C

θ = 21 + 273 = 294K.

Then, from kinetic theory,

The kinetic energy of individual elements is

K.E = 2kT/3

k is Boltzmann constant

k = 1.38 × 10^-23 J/K•particle

Then,

K.E = 2 × 1.38 × 10^-23 × 294 / 3

K.E = 2.7048 × 10^-21 J/particle

Each particle of hydrogen is 5.64 × 10²¹ particle

Total K.E = 2.7048 × 10^-21 × 5.64 × 10²¹

Total K.E = 15.26 J

Answer:

Ionic radius is greater than atomic radius in an anion.

Option B is correct because ionic radii increase for anions and decrease for cations compared to the neutral parent atoms, due to changes in electron-electron repulsion.

The correct answer to the question about the properties of atomic and ionic radii is B. Ionic radius is greater than atomic radius in an anion. This is because when an atom gains electrons to become an anion, the increase in electron-electron repulsion causes the ion to expand. Conversely, when an atom loses electrons to become a cation, it becomes smaller than the neutral atom because the reduction in electron-electron repulsion allows the remaining electrons to be pulled closer to the nucleus by its unchanging positive charge. This result is consistent with the observations made in the provided information.

Answer:

The contour interval of the map is 50

Answer:

B. The second hill is higher than the first

Explanation:

The model roller coaster car fails to reach the top of the second hill because it is higher than the first hill, and without additional energy, it can climb only as high as the starting point due to energy conservation.

The student is building a model roller coaster and the car rolls down from a 2 m high first hill and fails to make it up a 2.1 m second hill. Ignoring friction and air resistance, the most likely source of the problem is B. The second hill is higher than the first. According to the principles of conservation of energy, when the car rolls down the first hill, it converts potential energy into kinetic energy. This kinetic energy is then converted back into potential energy as the car climbs the second hill. If no energy is lost to friction or air resistance, the car should reach the same height from which it started. However, since the second hill is 2.1 m high, which is higher than the original 2 m, the car does not have enough energy to reach the top of the second hill.

Answer: K.E = 0.4 J

Explanation:

Given that:

M = 1.0 kg

h = 0.04 m

K.E = ?

According to conservative of energy

K.E = P.E

K.E = mgh

K.E = 1 × 9.81 × 0.04

K.E = 0.3924 Joule

The kinetic energy of the pendulum at the lowest point is 0.39 Joule

Final answer:

The kinetic energy of the pendulum at the lowest point is 0.392 J, which is found by converting the initial gravitational potential energy into kinetic energy using the principle of conservation of energy.

Explanation:

To determine the kinetic energy of the pendulum at the lowest point, we use the principle of conservation of energy, which states that the total mechanical energy in a system remains constant if there is no friction.

We know that the pendulum starts with gravitational potential energy which is completely converted into kinetic energy at the lowest point. The potential energy (PE) at the starting point is due to its height above the lowest point and is calculated as PE = mgh where m is the mass, h is the height, while g is the acceleration brought on by gravity (9.8 m/s²).

Let's calculate the potential energy at the initial height:

PE = mgh
  = (1.0 kg)(9.8 m/s²)(0.04 m)
  = 0.392 J

Since there is no friction, this potential energy will be entirely converted into kinetic energy (KE) at the lowest point. Therefore, the kinetic energy at the lowest point is also 0.392 J.

Answer:

slow revolution and  fast rotation

Explanation:

Answer:

Crust

Explanation:

Answer:

vx = 10.09 m/s

vy = 29.31 m/s

t = 5.98 s

ymax = 43.83 m

xmax = 60.37 m

Explanation:

A) The horizontal speed is constant in the complete trajectory. It is given by:

[tex]v_x=v_ocos\theta\\\\v_x=(31m/s)(cos71\°)=10.09\frac{m}{s}[/tex]

B) The vertical initial speed is:

[tex]v_y=v_osin\theta\\\\v_y=(31m/s)(sin71\°)=29.31\frac{m}{s}[/tex]

C) The flight time is given by:

[tex]t=\frac{2v_osin\theta}{g}\\\\t=\frac{2(31m/s)(sin71\°)}{9.8m/s^2}=5.98s[/tex]

D) The maximum height is:

[tex]y_{max}=\frac{v_o^2sin^2\theta}{2g}\\\\y_{max}=\frac{(31m/s)^2(sin71\°)^2}{2(9.8m/s)}=43.83m[/tex]

E) The maximum horizontal distance is:

[tex]x_{max}=\frac{v_o^2sin2\theta}{g}\\\\x_{max}=\frac{(31m/s)^2sin(2*71\°)}{9.8m/s^2}=60.37m[/tex]

Provides detailed calculations for the initial horizontal and vertical speed of a cannonball fired at an angle, its rise time, flight time, maximum height, and horizontal distance traveled.

The initial horizontal speed of the cannonball: 31m/s × cos(71°) = 10.089m/s

The initial vertical speed of the cannonball: 31m/s × sin(71°) = 29.387m/s

The time the cannonball rises: vy = uy + at, so t = (29.387m/s) / g ≈ 3 seconds

The total flight time of the cannonball: Twice the time it takes to rise ≈ 6 seconds

The maximum height of the cannonball: Using the kinematic equation h = uy² / (2g), h ≈ 44.877m

The distance from the cannon to where the cannonball lands: Horizontal distance = vx × total flight time = (10.089m/s) × 6s ≈ 60.534m

Answer:

D: 1.56

Explanation:

On a frictionless plane, W||=Wsin(θ). To push the brick up the plane, the car has to push with a force just greater than W||. To lift the brick directly, a force just greater than W must be used. The mechanical advantage is the ratio of the force needed to lift the brick directly to the force needed to lift the brick with the plane:

MA=Force needed to lift object without inclined plane/Force needed to lift object with inclined plane

MA=W/W||

MA=W/Wsin(θ)

MA=1/sin(40∘)

MA=1.56

Answer:

Static discharge

Explanation:

Static discharge occurs when oppositely charged objects get close enough for the air between them to become electrically charged causing electrons to flow between the oppositely charged objects leading to spark. The flow of the electron is from one charged body to another charged body is what causes the static discharge.

Charges can be built through friction, this buildup of electric charges is known as static electricity.

Electrical discharge occurs when the electric field between oppositely charged objects exceeds about 3 * 10⁶ V/m, ionizing the air and enabling a current to flow in the form of sparks or corona discharge.

The phenomenon being described is known as electrical discharge, which occurs when oppositely charged objects are brought close enough together for the air between them to become electrically conductive. When the electric field between these objects exceeds a certain threshold - about 3 * 10⁶ V/m for air - the air molecules become ionized. This leads to the flow of current and discharge in the form of sparks, like lightning, or a more gradual event known as corona discharge.

When this happens, if air was ohmic, the current would increase steadily as the voltage difference increased. However, gases are generally nonohmic, so there is zero current until the voltage reaches a point where the electrical forces tear electrons away from air molecules. Subsequently, these free electrons and positive ions create a cascade that ionizes more air molecules, resulting in an impressive electrical discharge.

An object gains a negative charge by accumulating electrons, while losing electrons makes it positively charged. In nature, we see this during thunderstorms, where the friction between water and air particles in thunderclouds creates huge charges. The sudden release of these accumulated charges towards the ground is what we witness as a dangerous lightning strike.

In a chemical reaction, c. catalysts are the substances that remain unchanged after the reaction completes as they only facilitate the reaction without being consumed.

The substances that are unchanged by a chemical reaction are the catalysts. Catalysts are substances that increase the rate of a chemical reaction without being consumed or altered in the process. They do this by lowering the activation energy needed for the reaction to proceed, which is the minimum amount of energy required to initiate the reaction.

Unlike reactants, which are the chemicals before the reaction starts and are found on the left of the arrow, and products, which are the chemicals after the reaction ends and are found on the right of the arrow, catalysts remain unchanged after the reaction is complete. Therefore, c. catalysts fit the description of being unchanged in a chemical reaction.

Answer: Please see below

Explanation:

Are pure substances that cannot be broken down into a simpler form---- Element

are units of two or more atoms---- Molecule

are the smallest possible particles of an element---- an Atom

are pure substances made of two or more atoms of different elements---- Compound

An atom is the smallest unit of  matter that consists of protons, neutrons and electrons. Eg the element, helium, contains atoms with two protons in the nucleus.

Eg of element, we have carbon, hydrogen, helium

Eg of a compound--- Ammonia

Eg of a molecule-----H2O (water),C6H12O6 (glucose)

Explanation:

An element is made up of  

(One type of atom)

Answer:

The speed of sound in water increases with increasing water temperature, increasing salinity and increasing pressure (depth). The approximate change in the speed of sound with a change in each property is: Temperature 1°C = 4.0 m/s.

Explanation:

Answer:

It would slow down.

Explanation:

Right on Edge!

Answer:

You could say that you learned that humans effect the ecosystem and many big ways. You can reduce ur footprint by recycling, riding bikes instead of cars, and eating more fruits and vegetables

Explanation:

Answer:

B

Explanation:

A protoplanetary disk is most likely associated with Earth's solar system because they are both in motion and held together by gravity. So, the correct option is (B).

Gravity is also called gravitation. It is a force that exists between all material objects in the universe. When the mass of any two objects or particles is non-zero, the gravitational force that attracts them to each other.

This occurs on objects of all sizes, from subatomic particles to clusters of galaxies.

Newton's law of universal gravitation can be explained by this formula:-

[tex]F=G{\frac{m_1m_2}{r^2}}[/tex]

where, F = force

G = gravitational constant

[tex]m_1[/tex] = mass of object 1

[tex]m_2[/tex] = mass of object 2

r = distance between centers of the masses

Earth's solar system exist in motion which is held by gravity like protoplanetary disk.

Thus, a protoplanetary disk is most likely associated with Earth's solar system because they are both in motion and held together by gravity. So, the correct option is (B).

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Answer:

C

Explanation:

An applied force is a force that is applied to an object by a person or another object. If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person.

Answer:

C:

Explanation:

any force acting on an object is a positive force I believe.

Answer:

a is 4.6 x 10-2m

b is 1x8204m

Explanation:

The fire net is actually going past zero into a negative vertical displacement. Essentially because again, we're saying that why initial equals thirty eight meters. The person is falling down to zero meters. Zero meters is where the fire that is. And then after the person stretches the fire. Yet it has a certain vertical displacement. But this particles placement is negative. So here we're going to choose the negative value. so trying to see how much of the fire net would stretch if the person was lying on tough it and if the person jumped from a height of thirty eight meters. So for here Mass is going to be equal to sixty two kilograms and why initial for party is going to be twenty meters and then why final is going to be negative one point four meters And so in order to find in order to find this is an instance, essentially, this is an instance perspective in the sense that we need this data in order to figure out this during constant so we can see that energy initial equals energy final and then we consider it mg y initial equals mg.