Nancy is pushing her empty grocery cart at a rate of 1.8 m/s. 30 seconds later,
she is pushing the, now full cart, at a rate of 0.54 m/s. Calculate the acceleration
of the cart.

Answer:

The dependent variable is the cook time of the egg

The higher the temperature of the water, the faster the egg will cook, then the dependent variable is the temperature of the water, therefore the correct answer is the option C

It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.

Thermal energy can be produced with help of various means such as by burning fossil fuels, with the help of solar energy.

The correct direction for heat flow is from hot to cold because heat always moves naturally from a higher thermal potential to a lower thermal potential unless additional work is provided by an external machine.

Thus, The dependent variable is the water's temperature, and since the egg will cook more quickly at higher water temperatures, option C is the best choice.

Learn more about thermal energy from here

brainly.com/question/3022807

#SPJ2

The metal with the highest heat capacity between metals A.25 B.35 C.10 and D.15 is metal A.

Heat capacity is the amount of heat required to raise the temperature of a substance by one degree Celsius. Metal A has a heat capacity of 400 J/kg°C, which means that it takes 400 joules of heat to raise the temperature of one kilogram of metal A by one degree Celsius.

Metal B has a heat capacity of 285.7 J/kg°C, metal C has a heat capacity of 1000 J/kg°C, and metal D has a heat capacity of 666.7 J/kg°C. Therefore, metal A has the highest heat capacity of the four metals.

Metal A's high heat capacity means that it can absorb a lot of heat without its temperature changing very much. This makes metal A a good material for things like heat sinks and thermal insulation.

Find out more on heat capacity here: https://brainly.com/question/16559442

#SPJ1

Two blocks, M1 and M2, are connected by a massless string that passes over a massless pulley . The distance the block M2 move is 3.44 m.

Calculating the problem:

Given:

M₂ = 19 kg

θ = 29 °

when the system is in equilibrium the net force on the system is zero

Fn = 0 = M₁ × g - M₂ × g × sin(θ)

M₁ = 19 × sin(29) kg

M₁ = 9.21 kg

the mass of M₁ is 9.21 kg

when M₁ = 5 kg

The acceleration of system , a = net force /effective mass

a = (M₂ × g × sin(theta) - M₁ × g )/(M₁ + M₂)

a = 9.81 × ( 19 × sin(29) - 5) /(19 + 5)

a = 1.72 m/s²

The acceleration of system is 1.72 m/s²

for t = 2 s

The distance moved by M₂ , s = 0 + 0.5 × a × t²

s = 0 + 0.5 × 1.72 × 2² m

s = 3.44 m

While distance is the length of an object's path, displacement only refers to the distance between an object's starting point and its final location.

Meter (m) is the SI unit for distance. Centimeters (cm) can be used to measure short distances, and kilometers (km) can be used to measure long distances.

A body's mass is the amount of material it contains. The SI unit of mass, the kilogram (kg), is the kilogram. A definition of mass is: Volume x density = mass.

Learn more about distance:

brainly.com/question/26550516

#SPJ1

Answer: the radius of the circular path is approximately 1637.58 meters.

Explanation:

The centripetal force acting on the airplane is provided by the component of the gravitational force that acts towards the center of the circular path. This component is given by:

F_c = m * g * tan(banking angle)

Where:

F_c is the centripetal force

m is the mass of the airplane

g is the acceleration due to gravity

tan(banking angle) is the tangent of the banking angle

Now, the centripetal force is also given by the formula:

F_c = (m * v^2) / r

Where:

v is the speed of the airplane

r is the radius of the circular path

Equating the two expressions for F_c, we get:

(m * g * tan(banking angle)) = (m * v^2) / r

Canceling out the mass (m) on both sides of the equation, we have:

g * tan(banking angle) = v^2 / r

Solving for r, we get:

r = (v^2) / (g * tan(banking angle))

Substituting the given values:

v = 400 km/h = 400,000 m/h

g = 9.8 m/s^2

banking angle = 20°

Converting the speed to m/s:

v = 400,000 m/h * (1/3600) h/s = 111.11 m/s

Converting the banking angle to radians:

banking angle = 20° * (π/180) rad/° = 0.3491 rad

Now, substituting the values into the formula:

r = (111.11^2) / (9.8 * tan(0.3491))

r ≈ 1637.58 meters

Therefore, the radius of the circular path is approximately 1637.58 meters.

It is true that the hydrologic cycle is powered by heat from the sun, which is used to energize the water to evaporate from the planet's surface's many water sources.

The water balance is crucial because it determines how water gets to people, plants, and other species. In addition to supplying water for people, animals, and plants, it also transports nutrients, diseases, and sediment to and from aquatic habitats.

The hydrologic cycle, another name for the water cycle, describes where and how water is kept on Earth. In the sky, on the surface of the land, and underground, water is kept in reserve. It can be either a liquid or a solid.

To know more about hydrologic cycle visit:

https://brainly.com/question/1338837

#SPJ1

The equivalent resistance between points A and B is 0.837Ω.

Resistors in series are connected end-to-end so that the current flows through them in sequence. The equivalent resistance of resistors in series is the sum of their individual resistances.

The formula for equivalent resistance of resistors in series: R_eq = R_1 + R_2 + ... + R_n

Resistors in parallel are connected across each other so that the voltage is the same across each resistor. The equivalent resistance of resistors in parallel is the reciprocal of the sum of the reciprocals of their individual resistances.

The formula for equivalent resistance of resistors in parallel: 1/R_eq = 1/R_1 + 1/R_2 + ... + 1/R_n

Here in the Fig.

we can simplify the second set of resistors in parallel (4.8 Ω, 3.3 Ω, and 8.1 Ω) using the same formula:

1/Req1 = 1/4.8 + 1/3.3 + 1/8.1

Req1=1.575Ω

This Req1 connected series with 6.3Ω, then Req of this two resistance given by:

Req2= 1.575Ω+ 6.3Ω

Req2=7.875Ω

Once again this req2 makes the parallel with the other two resistance i. e 1.5Ω and 2.5Ω

Their equivalent resistance  is given by,

1/Req3=1/1.5 + 1/2.5 + 1/7.875

Req3=0.837Ω

Hence, The equivalent resistance between points A and B is 0.837Ω

To learn more about Ohm's Law click:

brainly.com/question/1247379

#SPJ1

Answer:

because they have opposite charges

Explanation:

If you're talking about magnetism and electricity, the laws are that like charges attact and and unlike charges repel.

Charged particles interact with each other because they have opposite charges.

When charged particles are close to each other, their electric fields interact. So particles with opposite charges attract each other whereas particles with similar charges repel each other.

So we can conclude that Charged particles interact with each other because they have opposite charges.

Learn more about particles here: https://brainly.com/question/11066673

The vectors addition permits locating the perfect result for the sum of the two vectors in option B).  See attached and the vector is directed to the right and up.

Vector addition is the operation of adding or extra vectors together into a vector sum. The so-known as parallelogram regulation gives the rule for vector addition of or greater vectors. for two vectors and, the vector sum is received via placing them head to tail and drawing the vector from the loose tail to the unfastened head.

A vector is an amount or phenomenon that has impartial residences: importance and direction. The time period also denotes the mathematical or geometrical representation of the sort of quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.

Vectors are used in technological know-how to describe something that has a direction and a magnitude. they're commonly drawn as pointed arrows, the length of which represents the vector's importance

Disclaimer: your question is incomplete, please see below for the complete question.

The image shows the complete question.

Which vector is the sum of vectors à and b?

Learn more about vectors here:- https://brainly.com/question/25705666

#SPJ9

The minimum feeder ampacity of the given feeder with three motors with full load currents of 5A, 10A, and 15A is 18.75A.

Minimum Circuit Ampacity (MCA) is a value that specifies the minimum main power wire size. It is also used to decide the minimum wire size needed for a field-wired product.

This specification is needed to guarantee that the wiring will not overheat under the conditions that are operating. More accurately, we can say that the MCA is the highest steady-state electrical current that the unit can withstand when operating correctly.

MCA is found using the formula

MCA = 1.25 x Amperage value of feeder (here)

= 1.25× 15 A

= 18.75 A

To know more about minimum circuit ampacity here

brainly.com/question/29369322

#SPJ4

Answer:

\(\displaystyle \sqrt{\frac{(5/2)\, (g - a)\, m\, R^{2}}{M^{2}\, a}}\), assuming that the tension in the rope is the only tangential force on the sphere (\(g\) denote the gravitational acceleration.)

Explanation:

The forces on the bucket are:

Since the weight of the bucket and the tension from the rope are in opposite directions, the magnitude of the net force would be:

\(\begin{aligned} \|\text{Net Force}\| =\; & \|\text{Weight}\| - \|\text{Tension}\| \end{aligned}\).

The upward tension in the rope prevents the bucket from accelerating at \(g\) (free fall.) Rather, the bucket is accelerating at an acceleration of only \(a\). The net force on the bucket would be thus \(m\, a\).

Rearrange the equation for the net force on the bucket to find the magnitude of the tension in the rope would be:

\(\begin{aligned} & \|\text{Tension}\| \\ =\; & \|\text{Weight}\| - \|\text{Net Force}\| \\ =\; & m\, g - m\, a \\ =\; & (g - a)\, m\end{aligned}\).

At a distance of \(R\) from the center of the sphere, the tension in the rope \((g - a)\, m\) would exert a torque of \((g - a)\, m\, R\) on the sphere. If this tension is the only tangential force on this sphere, the net torque on the sphere would be \((g - a)\, m\, R\!\).

Let \(M\) denote the mass of this sphere. The moment of inertia of this filled sphere would be \(I = (2/5)\, M^{2}\).

Therefore, the magnitude of the angular acceleration of this sphere would be:

\(\begin{aligned}& \|\text{Angular Acceleration}\| \\ =\; & \frac{\|\text{Net Torque}\|}{(\text{Moment of Inertia})} \\ =\; & \frac{(g - a)\, m\, R}{(2/5)\, M^{2}} \end{aligned}\).

The bucket is accelerating at a magnutide of \(a\) downwards. The rope around the sphere need to unroll at an acceleration of the same magnitude, \(a\!\). The tangential acceleration of the sphere at the surface would also need to be \(\! a\).

Since the surface of the sphere is at a distance of \(R\) from the center, the angular acceleration of this sphere would be \((a / R)\).

Hence the equation:

\(\begin{aligned}& \frac{(g - a)\, m\, R^{2}}{(2/5)\, M^{2}} = \|\text{Angular Acceleration}\| = \frac{a}{R} \end{aligned}\).

Solve this equation for \(M\), the mass of this sphere:

\(\begin{aligned}& \frac{(g - a)\, m\, R^{2}}{(2/5)\, M^{2}} = \frac{a}{R} \end{aligned}\).

\(\begin{aligned}M^{2} &= \frac{(g - a)\, m\, R^{2}}{(2/5)\, a} \\ &= \frac{(5/2)\, (g - a)\, m\, R^{2}}{a}\end{aligned}\).

\(\begin{aligned}M&= \sqrt{\frac{(5/2)\, (g - a)\, m\, R^{2}}{a}}\end{aligned}\).

The observation that electromagnetic radiation with energy above a certain value can eject electrons out of a metal is a piece of evidence that they have particle-like properties.

The observation that electromagnetic radiation with energy above a certain value can eject electrons out of a metal is a piece of evidence that they have particle-like properties.

This observation that electromagnetic radiation behaves like particles is known as the photoelectric effect.

It provides evidence that electromagnetic radiation exhibits particle-like properties. When EMR with sufficient energy (above a certain threshold) interacts with a metal surface, it can cause the ejection of electrons from the metal.

This behavior indicates that EMR behaves as discrete packets of energy called photons, which transfer their energy to the electrons and cause their release. The photoelectric effect supports the particle nature of EMR and is a fundamental concept in the field of quantum mechanics.

More on electromagnetic radiation can be found here: https://brainly.com/question/29646884

#SPJ1

place's absolute location is its exact place on Earth, often given in terms of latitude and longitude. For example, the Empire State Building is located at 40.7 degrees north (latitude), 74 degrees west (longitude).

Place's absolute location is its exact place on Earth, often given in terms of latitude and longitude.

A point's longitude, which might refer to the east-west position of a point on the surface of the Earth or another celestial body, is a geographic coordinate. The Greek symbol lambda is used to represent the angular measurement, which is often given in degrees.

Latitude is a coordinate used in geography that describes a point's north-south location on the surface of the Earth or another celestial body. Latitude is measured as an angle, with 0° at the Equator and values ranging from -90° at the south pole to 90° at the north pole.

Place's absolute location is its exact place on Earth, often given in terms of latitude and longitude.

To learn more about longitude refer to the link:

brainly.com/question/28606059

 #SPJ2

The  correct diagram would be W.

Coloumb's law is the magnitude of electrostatic force of attraction or repulsion is directly proportional of two charges and inversly proportional to the square of the radius.

F=kq1q2/r²

Where k is coulomb constant the value is 9×10⁹

q 1 and q2 are two point charges.

r is radius and F is electrostatic force .

The example of Coulmb's law are comb and bitof papers . Charges get deposit on the teeth of a comb  when it is rubbed against hair.

W is right because when two like charges are in close vicinity then they repel each other and if there is unlike charge then it will attract each other .

to learn more about Coulomb's Law click here https://brainly.com/question/506926

#SPJ9

We have that it takes the ball \(t=0.553sec\) to take to hit the ground

\(t=0.553sec\)

From the Question we are told that

Initial height \(s=1.5m\)

Generally the equation for Time  is mathematically given as

\(S=ut+1/2at^2\\\\1.5=0.5*9.8\)

\(t=0.553sec\)

For more information on this visit

https://brainly.com/question/22271063?referrer=searchResults

The paper ball will hit the ground from 1.5 m at 0.55 s.

Here we can use the free fall kinematics equations. Let's see that the paper ball falls from the rest, so the initial velocity will be 0.

\(y=y_{i}+v_{i}t-0.5gt^{2}\)

Here:

Now, the initial height will be 1.5 m, putting our reference system zero in the ball. So, the final height will be 0 m, because it hits the ground.

\(0=1.5-0.5(9.81)t^{2}\)

Therefore, we just need to solve it for t.

\(t=\sqrt{\frac{3}{9.81}}\)

\(t=0.55\: s\)

The ball will hit the ground at 0.55 s.

You can learn more about free fall motion here:

https://brainly.com/question/17610229

I hope it helps you!

The quantity that describes the gravitational force between two objects is as follows: the product of the masses of the two objects divided by the square of the distance between them (option C).

Gravitational force is a very long-range, but relatively weak fundamental force of attraction that acts between all particles that have mass; believed to be mediated by gravitons.

It is called the gravitational force attraction because it always tries to pull masses together, it never pushes them apart.

The gravitational force of an object can be calculated using the following formula:

F = Gm1m2/r²

Where;

Therefore, the product of the masses divided by the square of the distance is how gravitational force is calculated.

Learn more about gravitational force at: https://brainly.com/question/12528243

#SPJ1

Answer:

24 m/s

Explanation:

V=Vi+at

given initial velocity is 0, acceleration is 2 and time is 12 sec

find final velocity by plugging in the variables into the equation above.

V=0+2x12=24m/s

Answer:

right and left ventricle

Explanation:

MAEK AS BRAINLIEST PLSSS

The correct options are right ventricle and left ventricle are the two lower chambers of the heart.

Given that,

We have to find what are the two lower chambers of the heart.

We know that,

In the heart,

The left and right ventricles are the lower chambers, and the left and right atrium are the upper chambers.

Both the left and right ventricles and left and right atrium are divided by a muscular wall known as the septum. The largest and most powerful chamber in our hearts is the left ventricle.

Therefore, The correct options are right ventricle and left ventricle.

To know more about heart visit:

https://brainly.com/question/9557720

Because the weight of the helium gas is less than the weight of the air it has displaced from the volume of the balloon, the helium-filled balloon rises in the atmosphere.

Chemical element helium has the atomic number 2 and the symbol He. It is the first member of the noble gas group in the periodic table and is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas. Its melting point at ordinary pressure is zero, and its boiling point is the lowest of all the elements.

Helium is most commonly used to fill balloons for celebrations and parades since it is a secure, non-flammable gas. Helium, however, is an essential component in numerous industries, including as national security, high-tech manufacturing, medical technology, and scientific research.

Learn more about helium here:

https://brainly.com/question/26226232

#SPJ1

Answer:

A 2kg block is moved a long a level floor by a horizontal force of 20N if the coefficient of sliding friction is 0.4

what is the acceleration of the blove

With the use of the formula SinФ = nλ / d, there are 16 spectral orders which can be seen when it is illuminated by white light.

Given that a grating has 2000 slits/cm. That is,

d = 0.01 / 2000

d = 5 x \(10^{-6}\) m

The wavelength λ = (700 - 400) nm

λ = 300 x \(10^{-9}\) m

To calculate how many full spectral orders that can be seen (400 to 700 nm) when it is illuminated by white light, we will use the below formula

SinФ = nλ / d

Φ = \(Sin^{-1}\) (nλ / d)

When n = 1

Φ = \(Sin^{-1}\)(300 x \(10^{-9}\)/ 5 x \(10^{-6}\) )

Φ = 3.4 degrees

when n = 2

Φ = \(Sin^{-1}\)(2 x 300 x \(10^{-9}\)/ 5 x \(10^{-6}\) )

Ф = 6.9 degrees

When n = 3

Ф = \(Sin^{-1}\)(3 x 300 x \(10^{-9}\)/ 5 x \(10^{-6}\) )

When n = 16

Ф = \(Sin^{-1}\)(16 x 300 x \(10^{-9}\)/ 5 x \(10^{-6}\) )

Ф = \(Sin^{-1}\)(0.96)

Ф = 73.7 degrees

when n = 17

Ф = \(Sin^{-1}\)(17 x 300 x \(10^{-9}\)/ 5 x \(10^{-6}\) )

Ф = \(Sin^{-1}\)(1.05)

Ф = Error ( that is, it does not exist)

Therefore, there are 16 spectral orders which can be seen when it is illuminated by white light.

Learn more about double slit here: https://brainly.com/question/4449144

When the teacher asked the student to make words out of the jumbled word gzeysktqix, the student was being tested on his ability to unscramble words. Unscrambling words is the process of taking a word or series of letters that are out of order and rearranging them to form a word that makes sense.

When trying to unscramble a word, it is important to look for any patterns that can help identify smaller words within the jumbled letters. This can help make the process easier and quicker. For example, in the jumbled word gzeysktqix, one might notice that the letters "sktqix" appear together.

This could indicate that these letters could potentially form a word. By looking at the remaining letters, one could notice that the letters "g", "z", "e", and "y" could also form smaller words. After some rearranging, the letters can be unscrambled to form the words "sky", "zig", "sex", and "yet". These are just a few examples, as there are likely many other words that can be formed from this jumbled word.

For more such questions on unscramble words, click on:

https://brainly.com/question/28555227

#SPJ8

The earth has a magnetic field. It is much like a bar magnet. Imagine a gigantic bar magnet inside the Earth. But there is no giant magnet inside it.

To have a pretty good idea what earth's magnetic field is shaped like we imagine a bar magnet inside the earth.

The magnetic field is made by the motion of molten iron in earth's outer core.  The swirling motion of molten iron changes all the time. Therefore, the magnetic fields will also get change. Then, the magnet poles also move.

The North pole and the south pole are two geographic poles of earth.  These poles are the places on the earth's surface that earth's imaginary spin axis passes through.

There are two magnetic poles of the earth: North magnetic pole and South magnetic pole.

Earth's magnetic field is tilted a little bit. If we imagine that earth's magnetic field is made by a giant bar magnet. Then, the bar magnet would make an with earth's spin axis.

The geographic poles and the magnetic poles are not in the same place.

If we are standing at one magnetic poles then the magnetic field lines would be straight up and down.

Earth's magnetic field is a complex and dynamic phenomenon that is generated by the motion of molten iron in its outer core. The magnetic field extends far beyond the planet and is responsible for protecting Earth from harmful solar radiation and cosmic rays.

Earth's magnetic field is roughly dipolar in shape, meaning it has two main magnetic poles - north and south - and the field lines emerge from the north and re-enter at the south pole. The magnetic field has a strength of about 25-65 microteslas (μT) at the Earth's surface, and it extends for several tens of thousands of kilometers into space.

2. Where are Earth's magnetic poles?

Earth's magnetic poles are not fixed and are constantly moving due to the complex and dynamic nature of the planet's magnetic field. Currently, the north magnetic pole is located in the Arctic Ocean, close to Canada's Ellesmere Island, and the south magnetic pole is located in the Antarctic Ocean, near the coast of Antarctica.

3. Where is the magnet that causes Earth's magnetic field located? What is this magnet made of?

The magnet that causes Earth's magnetic field is not a physical magnet but rather a result of the motion of molten iron in the Earth's outer core. The outer core is a layer of liquid iron and nickel that surrounds the solid inner core. The motion of this molten iron generates electrical currents, which in turn create a magnetic field.

4. Does Earth's magnetic field move?

Yes, Earth's magnetic field is not static and is constantly changing due to the complex nature of the planet's interior. The magnetic poles are constantly moving and the strength of the magnetic field can vary over time. The magnetic field can also be influenced by external factors such as solar storms and changes in the solar wind. Scientists continue to study Earth's magnetic field to better understand its behavior and how it affects the planet.

Therefore, The magnetic field of the Earth is a complex and dynamic phenomenon caused by the movement of molten iron in its outer core. The magnetic field extends far beyond the planet and is in charge of shielding the planet from harmful solar radiation and cosmic rays.

To learn about cosmic rays click:

https://brainly.com/question/13960192

#SPJ3

Answer:

total time taken is 2.1389 seconds

Explanation:  

Given the data in the question and as illustrated in the diagram below;

They have measured the acceleration of the ball on the incline to be 2.5 m/s²

a = -2.5 m/s²    { negative because its acting downward }

from the diagram, Motion from B to C will be;

v² = u² + 2as

given that distance s = 1.1 m

we substitute

v² - u² = 2as

(0)² - u² =  2 × (-2.5 m/s ) × 1.1 m

-u² = -5.5

u = √5.5

so Initial speed; u = 2.345 m/s

to get the time, we use the equation of motion;

v = u + at

we substitute

0 = 2.345 m/s + ( -2.5 m/s² × t₁ )

2.5t₁ = 2.345

t₁ = 2.345 / 2.5

t₁ = 0.938 s

Now, from C to B

we determine t₂

s = vt₂ + \(\frac{1}{2}\)at₂²

1.1 m = 0×t₂ + \(\frac{1}{2}\) × 2.5 m/s² × t₂²

1.1 m = \(\frac{1}{2}\) × 2.5 m/s² × t₂²

1.1 m = 1.25 m/s² × t₂²

t₂² = 1.1 m / 1.25 m/s²

t₂² = 0.88 s²

t₂ = √0.88 s²

t₂ = 0.938 s

Next, from B to A; t₃ will be;

s = ut₃ + \(\frac{1}{2}\)at₃²

we substitute

0.7 m = (2.345 m/s)t₃ + \(\frac{1}{2}\) × 2.5 m/s × t₃²

0.7 m = (2.345 m/s)t₃ + ( 1.25 m/s )t₃²

1.25t₃² + 2.345t₃ - 0.7 = 0

using; x = [ -b ± √( b² - 4ac ) ] / 2a

we substitute

x = = [ -2.345 ± √( (2.345)² - (4 × 1.25 × -0.7) ) ] / 2(1.25)

x = [ -2.345 ± √( 5.499 + 3.5 ) ] / 2.5

x =  [ -2.345 ± √( 8.999 ) ] / 2.5

x =  [ -2.345 ± 2.9998 ] / 2.5

x =  ( [ -2.345 - 2.9998 ] / 2.5 ) or ( [ -2.345 + 2.9998 ] / 2.5 )

x = -2.1379 or 0.2629

hence t₃ = 0.2629 s

∴ Total time = t₁ + t₂ + t₃

Total time = 0.938 s + 0.938 s + 0.2629 s

Total time = 2.1389 seconds

Therefore, total time taken is 2.1389 seconds

Answer:

is point 2

Explanation:

There is a good cause for concern that technology will create social isolation

Answer:

b. cancel each other but not completely.

Explanation:

Since the waves don't have the same amplitude, they will cancel each other but not completely because the wave that does to the right has a greater amplitude than the wave that goes to the left.

Therefore, the answer is

b. cancel each other but not completely.

Answer:

There are nine PCNs in the Edmonton area. They work alongside more than 1,100 family doctors in over 330 clinics to provide care for 1.2 million patients. PCN teams include more than 370 nurses, mental health clinicians and other health professionals.

Explanation: