57:23
Look at the diagram showing resistance and flow of
electrons.
Which labels best complete the diagram?
X: High resistance
Y: Low resistance
Z: Flow of electrons
X: Low resistance
Y: Flow of electrons
Z: High resistance
X: Flow of electrons
Y: High potential energy
Z: Low potential energy
X: Low potential energy
Y: High potential energy
Z: Flow of electrons
N

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:

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

Answer:

William Gilbert

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).

Learn more about Gravity, here:

https://brainly.com/question/9722860

#SPJ5

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:

Here down below is 3 things true about composite materials

Explanation:

-They’re made up of more than one substance.

-They have the same or similar properties as the materials used to make them.

-They’re always made of metal.

-They’re readily available in nature.

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:

the answer is B: electrons

Explanation:

Answer:

c

Explanation:

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:

Spring constant, k = 49 N/m    

Explanation:

It is given that,

Mass that is attached to the spring is 0.5 kg

Due to this mass, the spring stretches a  distance of 0.1 meter.

We need to find the spring constant of this spring. When the spring is attached to the spring, the force on spring is balanced by its weight such that,

[tex]mg=kx[/tex]

k is spring constant

[tex]k=\dfrac{mg}{x}\\\\k=\dfrac{0.5\times 9.8}{0.1}\\\\k=49\ N/m[/tex]

So, the spring constant of the spring is 49 N/m.

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

During a baseball game, the ball accelerates more than the bat when hit because the bat has more mass, resulting in a smaller acceleration. A more massive bat can make the ball fly off faster due to greater energy transfer, explained by the center of mass concept. The physics behind this phenomenon involves Newton's third law and the relationship between force and acceleration.

Understanding the Physics of a Bat Hitting a Ball

When a batter hits a baseball, both the bat and ball exert forces on each other due to Newton's third law, which states every action has an equal and opposite reaction. However, the ball accelerates away from the bat more than the bat accelerates away from the ball because of their different masses. According to the formula acceleration (a) = force (F) / mass (m), since the bat has a larger mass, it will have a smaller acceleration compared to the ball, which has a smaller mass. This relationship is also reflected in the concept that more massive bats and rackets impart more speed on the ball. The center of mass frame explains this by considering that a heavier racket or bat has more inertia, allowing a greater transfer of energy to the ball during impact, especially when the racket or bat is initially at rest.

The follow-through in sports like tennis or baseball increases the time of impact, which increases the velocity change of the ball. Also, the force exerted by a bat on a ball in a collision can be measured by the change in the ball's velocity and the duration of the impact. For example, if a 150-g baseball reverses direction after colliding with a bat, the average force exerted can be calculated using the change in velocity and the collision time.

In conclusion, the reason the ball accelerates more than the bat upon impact, and why a heavier bat makes the ball leave faster, is due to the principles of physics involving mass, force, and acceleration, as well as energy transfer during the collision.

Answer:

slow revolution and  fast rotation

Explanation:

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.

To know more about Electrical Energy:

https://brainly.com/question/16182853

#SPJ6

Answer:

If said tires were not properly inflated more of the tire would be touching the ground due to the "sag" greatly increasing the friction of the road and the tires also maybe slightly less relevant the axle has to "lift" the tire around each rotation of the wheel which together would make it much harder for the bus to move forward.

Explanation:

The force which produces the type of energy shown by the X in the diagram is electromagnetic. The second option is correct.

The electromagnetic wave is the white light or Sunlight coming directly from the Sun. This light ray is the form of wave. This light when falls on any object segregates into the range of all types of EM radiation.

Radiation is packet of energy that travels and spreads out. It has radio waves, infrared waves and visible light waves, ultraviolet rays and microwaves.

The image shows a working flashlight.

The force which produces the type of energy shown by the X in the diagram is electromagnetic

Thus, the second option is correct.

Learn more about electromagnetic wave.

https://brainly.com/question/3101711

#SPJ2

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:

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 they carry out functions that sustain life such as respiration

The observations that provides evidence that the smaller parts of living things, and not the non-living things, are cells is D. cannot be seen with the unaided eye but require a microscope.

Cells are the smallest units of life and they are too small to be seen with the eye. They can only be seen with a microscope. So, the observation that the smaller parts of living things cannot be seen with the unaided eye but require a microscope is evidence that they are cells.

The other options are not correct. Option A, tightly packed together with almost no space between them, is not specific to cells. Many non-living things, such as sand, are also tightly packed together. Option B, carry out functions that sustain life such as respiration, is also not specific to cells. Option C, are uniform in size and structure, is not always true for cells. Cells can vary in size and structure depending on their function.

Find out more on living things here: https://brainly.com/question/24394893

#SPJ3

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.

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: 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:

what are simple machines lol

Explanation:

Answer:

The contour interval of the map is 50

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:

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:

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.