You want to figure out which brand of microwave popcorn pops the most kernels so you can get the most value for your money. You test different brands of popcorn to see which bag pops the most popcorn kernels. What is the dependent variable?
A. Number of kernels popped
B. The brand of microwave
C. The brand of popcorn
D. The type of popcorn

Answer:

∆p.e = mg∆h

Explanation:

Take height reference be h1 while height final be h2.

∆h = (h2 - h1)

m = m

g = g

•°• ∆p.e = mg(h2 - h1)

=> ∆p.e = mg∆h

The rate at which the current though a 0.478-h coil is changing if an emf of 0.157 v is induced across the coil is 0.329 A/s.

According to Faraday's law of electromagnetic induction, a voltage is induced across a conductor that is exposed to a changing magnetic field. The magnitude of the induced emf is directly proportional to the rate of change of the magnetic field. The equation for this relationship is:ε = -N(dΦ/dt), where ε is the induced emf, N is the number of turns in the coil, and (dΦ/dt) is the rate of change of the magnetic flux through the coil.

In this case, the induced emf is given as 0.157 V. The number of turns in the coil is not given, but it is not necessary to know it in order to find the rate of change of the current. Therefore, the equation can be rewritten as:(dI/dt) = ε / L, where L is the inductance of the coil.

Substituting the given values gives:(dI/dt) = 0.157 / 0.478 = 0.329 A/s

Therefore, the rate at which the current through the 0.478 H coil is changing is 0.329 A/s.

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Answer:

the answer is at the BOTTOM OF THEIR QUESTION

Explanation:

IT IS CORRECT BTW

Answer: C

Explanation:

Since bulb B is burnt out, the wires can't transfer to bulb A, so that's why bulb A will burn out.

If I get it wrong, sorry. Im still learning.

the magnitude of the weight force exerted on the jet is equal to the magnitude of the normal force exerted on the jet.

To determine if the magnitude of the weight force exerted on the jet is greater than, less than, or equal to the magnitude of the normal force exerted on the jet, we need to consider the forces acting on the jet in Figure 4.23.

Typically, the weight force of an object is the force exerted on it due to gravity, and it acts vertically downward. The normal force, on the other hand, is the force exerted by a surface to support the weight of an object and acts perpendicular to that surface.

Since we don't have a specific description or diagram of Figure 4.23, we can make a general assumption that the jet is on the ground or a flat surface. In this case, the normal force would act vertically upward, perpendicular to the surface, and balance the weight force acting downward.

According to Newton's third law, for every action, there is an equal and opposite reaction. Therefore, the magnitude of the weight force exerted on the jet would be equal to the magnitude of the normal force exerted on the jet. This assumes that there are no additional vertical forces acting on the jet, such as thrust or lift.

So, in the given scenario, the magnitude of the weight force exerted on the jet is equal to the magnitude of the normal force exerted on the jet.

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Answer:

A gas takes the shape of its container

Answer:

true

Explanation:

this is true, igneous rocks are formed from molten lava when it cools

Answer: True

Explanation:

The conduction of current on the postsynaptic neuron in an electrical synapse occurs through direct flow of ions between the presynaptic and postsynaptic neurons.

In electrical synapses, the conduction of current on the postsynaptic neuron occurs through direct flow of ions between the presynaptic and postsynaptic neurons. These synapses are formed by specialized structures called gap junctions, which create channels between the cells, allowing ions to pass through. The channels are formed by connexin proteins that span the plasma membranes of adjacent neurons.

When an action potential reaches the presynaptic neuron, it depolarizes the cell membrane and triggers the opening of voltage-gated ion channels. This results in the influx of positively charged ions, such as sodium (Na+), into the presynaptic neuron. As a result, the electrical potential of the presynaptic neuron becomes more positive.

Due to the direct connection provided by the gap junctions, these positive ions can flow through the channels into the postsynaptic neuron. This movement of ions generates an electrical current that spreads across the postsynaptic neuron. The current causes depolarization of the postsynaptic membrane, leading to the initiation of an action potential in the postsynaptic neuron.

The strength of the electrical synapse is determined by the size of the gap junctions and the number of connexin proteins present. The larger the gap junctions and the more connexin proteins, the more ions can pass through, resulting in a stronger electrical coupling between the neurons.

at electrical synapses, the conduction of current on the postsynaptic neuron occurs through the direct flow of ions between the presynaptic and postsynaptic neurons via specialized gap junctions. This direct electrical coupling allows for rapid and synchronized transmission of signals. Electrical synapses are particularly important in neural circuits that require fast and coordinated communication, such as in reflex arcs or the synchronization of cardiac muscle cells.

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Answer:

The anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4o C to 0o C, and it becomes less dense.

Explanation:

The density is maximum at 4 degree centigrade and decreases below that temperature as shown in graph.

Answer:

9s

Explanation:

v=u+at

36=0+4t

t=36-0/4

t=9s

The differential heating of Land and water depends on amount of solar energy reaching earth.

Land is a better conductor of heat than water, heating up and cooling down faster than water.

In summer, amount of solar radiation is highest hence difference of water and land temperature is highest. Air over land heats up and expands hence the air rises above. This rising air is replaced with the surrounding air rich in moisture content from over ocean surface. The degree of differential heating depends on amount of solar energy reaching earth's surface.

This results in Sea Breeze which is from a large body of water towards landmass due to difference in pressure created.

Land Breeze blows towards sea from land at night. It is due to difference in rate of cooling of land and ocean.

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The exact distance from the seismic station to the epicenter is 6000 km.

The earthquake's epicenter is the point above the fault location on the earth's surface.

Given that:

A p-wave arrives at 3:00:00 and the s-wave arrives at 3:07:20.

Difference in arrival time = 3:07:20 - 3:00:00 = 7 minutes 20 seconds

From the earthquake time travel graph, a time difference of 7 min 20 sec is at x = 6

The exact distance from the seismic station to the epicenter is 6000 km.

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The work done by the gas is - 41 J.

As per the data given:

There is a gas expansion.

During this gas expansion 87 j of heat is released to the surroundings.

Heat = 87 j

Also the internal energy of the system decreases by 128 j.

Change in energy Δv = 128 j

Here we have to determine the work done by the gas.

Δv = Heat + work done by the gas

Work done by the gas = Heat - Δv

Work done by the gas = (128 - 87) J

= 41 J

As the the internal energy of the system decreases and gas is expanded  so the work done by the gas will be negative.

Therefore Work done by the gas = - 41 J

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The hanging mass will be 0.101 kg.

The formula for calculating the mass of a hanging wire is given as;

m = (π/4) * [(ρL² /Y) * ΔL + L * Δρ]

where; m is the mass of the hanging weight,

            ρ is the density of the wire,

            L is the length of the wire,

            Y is Young's modulus of the wire,

           ΔL is the extension of the wire and

         Δρ is the change in the density of the wire.

In this case,

ρ = 7.86 x 10³ kg/m³L

  = 2.9 mD

  = 0.48 mm

  = 0.48 x 10⁻³ m

  = 4.8 x 10⁻⁴ mY

  = 2.0 x 10¹¹ N/m²ΔL

  = 1.4 x 10⁻³ m

Let US calculate the mass of the wire;

A = (π/4) * D²A

    = (π/4) * (4.8 x 10⁻⁴)²A

    = 1.80955737 x 10⁻⁷ m²ρL

    = 7.86 x 10³ kg/m³ * 2.9m

    = 22.794 kg Y

   = 2.0 x 10¹¹ N/m²m_wire

   = ρLA / Lm_wire

   = 7.86 x 10³ kg/m³ * 1.80955737 x 10⁻⁷ m² / 2.9m

  = 4.9091761 x 10⁻⁴ kg

Let's calculate the mass of the hanging weight using the mass formula.

m = (π/4) * [(ρL² /Y) * ΔL + L * Δρ]

m = (π/4) * [(7.86 x 10³ * 2.9² / 2.0 x 10¹¹) * 1.4 x 10⁻³ + 2.9 * 4.8 x 10⁻⁴]

m = 0.100615775 kg

Therefore, the hanging mass will be 0.101 kg.

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Answer:

Specific heats

Explanation:

The position on the meter mark where Ari catches up with Amanda is 19.3 m.

The given parameters:

The distance between 6 m mark and 25 m mark is calculated as follows;

\(d = 25 \ m - \ 6 \ m\\\\\d = 19 \ m\)

The distance traveled by Ari before catching up with Amanda is calculated as follows;

total ratio = 7 + 3 = 10

\(distance = \frac{7}{10} \times 19 \ m\\\\distance = 13.3 \ m\)

The position of Ari from the 6 m mark is calculated as follows;

\(position = 6 \ m \ + \ 13.3 \ m\\\\position = 19.3 \ m\)

Thus, the position on the meter mark where Ari catches up with Amanda is 19.3 m.

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Answer:

The above answer is correct! The answer is 19.3 meters :)

Explanation:

adding a ss for proof!

hope this helps :D

During sewer pipe installation using a laser, a laser beam is projected through the pipe until it hits a target beam(c).

The target beam acts as a reference point or marker that helps align the pipe correctly during installation. By hitting the target beam, the laser beam indicates the desired direction and position for the pipe, ensuring accurate installation.

The target beam is often placed at the other end of the pipe or at specific intervals along the pipe's path, allowing the construction crew to adjust the alignment and slope as necessary. This process helps ensure the proper installation of the sewer pipe, minimizing potential issues and ensuring efficient drainage.

So c is correct option.
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Answer:

C

Explanation:

the definition of mass is measure of the amount of substance in an object

The statement that correctly defines mass is that it is the amount of matter in an object. The correct option is C.

Matter is any material that has mass and occupy space by having volume in physical laws and general chemistry.

It is something with reference to weight. The majority of matter in the universe is made up of atoms, which are made up of subatomic particles.

Whether they are living or non-living, they contain matter. Matter is significant because it comprises everything around us. Matter cannot be created or destroyed but instead, it can only be transmogrified into a different form.

The quantity of matter in a physical body is defined as mass. It also represents the body's inertia, or opposition to acceleration when a net force is applied.

Thus, the correct option is C.

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Answer:

3 × 10 to the power minus 6 milliseconds

When we convert 3 x 10⁻⁹ s into milliseconds it would be 3 x 10⁻⁶milliseconds

In positional notation, significant figures refer to the digits in a number that is trustworthy and required to denote the amount of something, also known as the significant digits, precision, or resolution.

If a number describing the result of a measurement (such as length, pressure, volume, or mass) includes more digits than the number of digits permitted by the measurement resolution, only the digits allowed by the measurement resolution can be significant figures.

As given in the problem we have to convert 3 x 10⁻⁹ s into milliseconds

1 second = 1×10³ milliseconds

3 x 10⁻⁹ seconds =  (3 x 10⁻⁹)  ×  (1×10³ )

                            = 3 x 10⁻⁶milliseconds

Thus, 3 x 10⁻⁹ s converted into milliseconds it would be 3 x 10⁻⁶ milliseconds

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Answer:

Explanation:

The speed of the rocket can be found by using the formula

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

d is the distance

t is the time taken

From the question we have

\(v = \frac{9000}{12} \\ \)

We have the final answer as

Hope this helps you

Answer:750m/s

Explanation:I got 750m/s :D Hopefully this helped! lol

Answer:

No

Explanation:

We would not be able to see the star because its radiation is in the UV range. For the star to be visible, it has to be in the visible spectrum of light for me to be able to see it with my eyes.

Answer:

7 hectometers is 7000 decimeters

The final velocity of object one is 2v/5 to the right, and the collision is an elastic collision.

In a head-on collision between two objects, object one has a mass of "m" and an initial velocity of "2v" to the right, while object two has a mass of "4m" and an initial velocity of "v" to the left. We are given that the final velocity of object two is "v/5" to the right.

To determine the final velocity of object one, we can apply the law of conservation of momentum.

In a collision, the total momentum before the collision is equal to the total momentum after the collision, provided no external forces are acting on the system. The momentum is given by the product of mass and velocity.

Initially, the total momentum is given by (2m)(2v) - (4m)(v) since object one is moving to the right and object two is moving to the left. This simplifies to 4mv - 4mv = 0.

After the collision, the total momentum is given by (2m)(v1) + (4m)(v2/5), where v1 and v2 are the final velocities of object one and object two, respectively.

Applying the law of conservation of momentum, we have:

0 = (2m)(v1) + (4m)(v2/5)

0 = 2mv1 + (4m)(v/5)

0 = 2mv1 + 4mv/5

0 = 10mv1 + 4mv

0 = 14mv1 + 4mv

To solve for v1, we isolate it on one side of the equation:

-4mv = 14mv1

v1 = -4mv / 14m

v1 = 2v/5

Therefore, the final velocity of object one is 2v/5 to the right. The collision between the two objects is an elastic collision since both momentum and kinetic energy are conserved.

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The atom is the smallest part of a substance that can take part in a chemical reaction.

The atom is the smallest part of a substance that can take part in a chemical reaction. Let us now address the atoms individually.

Oxygen;

Mass number = 16

Atomic number = 8

Number of protons = 8

Number of electrons - 13

Number of neutrons = 16 -8 = 8

Helium

Mass number = 4

Atomic number = 2

Number of protons = 2

Number of electrons - 13

Number of neutrons = 4 -2 = 2

Carbon

Mass number = 12

Atomic number = 6

Number of protons = 6

Number of electrons - 6

Number of neutrons = 12 - 6 = 6

Aluminum

Mass number = 27

Atomic number = 13

Number of protons = 13

Number of electrons - 13

Number of neutrons =27 - 13 = 14

Calcium

Mass number = 40

Atomic number = 20

Number of protons = 20

Number of electrons - 20

Number of neutrons =40 - 20=20

Sodium

Mass number = 23

Atomic number = 11

Number of protons = 11

Number of electrons - 11

Number of neutrons =23 - 11 = 12

Potassium

Mass number = 39

Atomic number = 19

Number of protons = 19

Number of electrons - 19

Number of neutrons =39 - 19 = 10

Nitrogen

Mass number = 14

Atomic number = 7

Number of protons = 17

Number of electrons - 7

Number of neutrons =14 - 7 = 7

Silicon

Mass number = 28

Atomic number = 14

Number of protons = 14

Number of electrons - 14

Number of neutrons =28 - 14 = 14

Iron

Mass number = 56

Atomic number = 26

Number of protons = 26

Number of electrons - 26

Number of neutrons =56 - 26 = 30

Hydrogen

Mass number = 2

Atomic number = 1

Number of protons = 1

Number of electrons - 1

Number of neutrons =2 - 1 = 1

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Answer:

Hi there!

Your answer is;

345,600 mins per 240 days

Explanation:

First, start small

How many minutes are in one hour?

60mins per 1 hr

How many minutes per one day?

60 × 24= 1440

1440 mins per 1 day

How many minutes per 240 days?

1440× 240= 345600

345,600 mins per 240 days

Hope this helps

Answer:

a cold air mass and a warm air mass merge together

Answer:

290

Explanation:

Answer:

nuclear fusion plants are fossil fuels, if you are asking which of the following is a fossil fuel

Explanation:

Answer:

A

Explanation:

big brain

During this quick stop, some of the mechanical energy (his motion) was changed into heat energy.

Energy is the ability to do work. There are different types of energy such as Heat energy, light energy, kinetic energy, and gravitational energy.

Heat is the energy that moves from one body to another when temperatures are different. Heat passes from the hotter to the colder body when two bodies with differing temperatures are brought together.

The joule is a unit of energy that serves as the SI unit for heat (J). The calorie (cal), which is defined as "the amount of heat necessary to raise the temperature of one gram of water from 14.5 degrees Celsius to 15.5 degrees Celsius," is another common unit of heat measurement.

Therefore, During this quick stop, some of the mechanical energy (his motion) was changed into heat energy.

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Answer:

20 mins

Explanation: