which of the three insulating materials, black construction paper, aluminum foil, cotton will be able to insulate outside thermal energy to the ice cubes in the cup? (With an explanation)

The displacement at 8.0 seconds is 19.08 m.

The velocity at 8.0 seconds is  -0.06 m/s.

The displacement and velocity of the particle is calculated by applying interpolation and extrapolation.

8.0 s --------> 19.08 m

10.0 s --------> 16.81

8.0 s  --------> x

(8 - 10 ) / ( 10 - 8 ) = ( 19.08 - 16.81 ) / ( 16.81 - x )

(-2 ) / ( 2 ) = ( 2.27 ) / ( 16.81 - x )

-1 (16.81 - x ) = 2.27

16.81 - x = -2.27

x = 16.81 + 2.27

x = 19.08 m

The velocity at 8.0 seconds is calculated as follows;

8.0 s ---------------> -0.06 m/s

10.0 s ---------------> -2.39 m/s

8.0 s ----------------> x

( 10 - 8 ) / ( 10 - 8 ) = ( -2.39 - - 0.06 ) / ( -2.39 - x )

1 = ( -2.33 ) / ( -2.39 - x )

-2.39 - x = -2.33

x = 2.33 - 2.39

x = -0.06 m/s

Learn more about interpolation and extrapolation here: https://brainly.com/question/18768845

#SPJ1

The magnitude of the applied force on the wood box is 40 N.

The given parameters;

The acceleration of the wood box is calculated as follows;

\(a = \frac{v-u}{t} \\\\a = \frac{20 - 0}{5} \\\\a = 4 \ m/s^2\)

The magnitude of the applied force on the wood box is calculated as follows;

\(F = ma\\\\F = 10 \times 4\\\\F = 40 \ N\)

Learn more here about applied force here:https://brainly.com/question/2733221

the frequency of the signal is

b)254hz

Answer: The employee must do 11.2308 Joules of work

Explanation:

Work done = force × distance

But  

Force = ma(mass x acceleration due to gravity)

F = 30×9.8

F = 294N

Also distance moved can be found using  the equation  

v² = u² +2gS

1.00 ² = 0.50²+2(9.8)S

1 =0.25+19.6S

1-0.25 =19.6S

0.75=19.6S

S=0.75/19.6

S = 0.0382m

Work done = force × distance = FS

Work done = 294 N X 0.0382m

Workdone =11.2308Nm = 11.2308 Joules

Work done required by the employee to do on the desk to change the speed to 1.00 m/s is 11.3 J.

Work done is the force applied on a body to move it over a distance. Work done by a body can be given as,

\(W=Fd\)

Here (F) is the magnitude of force and (d) is the distance traveled.

From the second law of motion, the force is product of mass time acceleration. Thus the above formula can be given as,

\(W=(ma)d\)

For the gravitational acceleration, it can be written as,

\(W=(mg)d\\W=mgd\)

The constant speed by which, the warehouse employee is pushing the desk across a floor is 0.50 m/s and the the final speed of the desk is 1 m/s.

Thus, the distance traveled by it can be find out using the third law of motion as,

\(v^2-u^2=2gd\\1^2-0.25^2=2\times9.8\times d\\d=0.0382\rm m\)

As the mass of the desk is 30 kg and the distance moved is 0.382 meters. Thus, put the values in the above formula as,

\(W=30\times9.81\times0.0382\\W\cong11.3\rm J\)

Thus the work done required by the employee to do on the desk to change the speed to 1.00 m/s is 11.3 J.

Learn more about the work done here;

https://brainly.com/question/25573309

She will use (D). Multiply wavelength and frequency to calculated the speed of the wave.

Hi ! Here, I will help explain to you about the speed of propagation of electromagnetic waves. Generally, in a vacuum, the speed of electromagnetic waves will always be the same (forming a constant) whose value is almost close to \( \sf{3 \times 10^8} \) m/s. Each type of electromagnetic wave has its own wavelength, as well as the frequency. This means, the larger the wavelength, the smaller the frequency.

For more details, below is the formula for the relationship between the constant of the speed of light with the wavelength and frequency :

\( \boxed{\sf{\bold{c = \lambda \times f}}} \)

With the following condition :

She will use (D). Multiply wavelength and frequency to calculated the speed of the wave.

Answer:

The answer is D. moving at a constant rate.
Explanation:
I've had this question before.

In the position-time graph, the horizontal line segment indicates that the object is not moving and is at rest. Therefore, option (B) is correct.

The position vs time graph on which the instantaneous position of a particle is plotted on the y-axis and the time is plotted on the x-axis is called the Position-Time graph.

In the position vs time graph always take an independent variable on the x-axis and dependent variables must be plotted on the y-axis. Through mathematical function, the dependent variable will be dependent on the independent variable.

In the case of the Kinematic equation of uniform acceleration, the position can be defined as a dependent variable and time will be the fundamental independent variable.

The case of the horizontal line in the position vs. time graph indicates that the position of the object is not changing with time so it is at rest.

Learn more about position vs. time graph, here:

https://brainly.com/question/11290682

#SPJ2

The rate of heat that must be supplied to the engine for it to produce 5 hp of power is 7635 btu/h.

The formula for the efficiency of a completely reversible heat engine:

Efficiency = 1 - (Tc/Th)

where Tc is the temperature of the cold sink and Th is the temperature of the hot source. Since the engine is completely reversible, it operates at the maximum possible efficiency, which means:

Efficiency = 1 - (Temperature_sink / Temperature_source)
Efficiency = 1 - (500/1500) = 2/3

We also know that power (P) is related to the rate of heat transfer (Q) by the formula:

P = Q x efficiency

We can rearrange this formula to solve for Q:

Q = P / efficiency

Plugging in the given values, we get:

Q = (5 hp x 2545 btu/hp) / (2/3) = 7635 btu/h

Therefore, the heat must be supplied to the engine at a rate of approximately 19080.69 BTU/h for it to produce 5 hp of power.

Learn more about rate of heat transfer here: brainly.com/question/24985393

#SPJ11

Work is being done when Jessica pushes a 25 kilogram cart a distance of 10 meters and Bane carries a 20 kilogram box a distance of 50 meters.

Work is the product of force and distance in the direction of the force. And the S.I unit of work is Joule

Looking at the given options one by one;

O Jessica pushes a 25 kilogram cart a distance of 10 meters. Work is done by Jessica. The work done = 25 x 10 x 10 = 2500 Joules

O A weightlifter holds a 100 kilogram barbell over his head. The weightlifter does no work.

O Bane carries a 20 kilogram box a distance of 50 meters. Bane does work. The work done = 20 x 10 x 10 = 2000 Joules

O Ali is trying to push a truck away from the parking lot. Since there is no movement, there is no work done.

Therefore, Work is being done when Jessica pushes a 25 kilogram cart a distance of 10 meters and Bane carries a 20 kilogram box a distance of 50 meters.

Learn more about Work here: https://brainly.com/question/25573309

#SPJ1

Answer:

When we sprinkle salt onto the ice cube, the state of equilibrium is disrupted. The salt molecules dissolve and join the water molecules thus changing the water's rate of freezing. The rate of melting is now much faster than freezing hence causing the ice to melt.

Explanation: Hope this helps

The relationship between temperature, kinetic energy and velocity of gas particles can be described as follows:As the temperature of a gas is increased, the kinetic energy and velocity of the gas particles also increase.

Temperature of a gas is a measure of the average kinetic energy of its particles.

This means that as the temperature increases, the average kinetic energy of the gas particles also increases. This, in turn, causes an increase in the velocity of the gas particles.The relationship between temperature, kinetic energy and velocity of gas particles is governed by the kinetic theory of gases. This theory states that the motion of gas particles is related to their temperature, pressure, and volume.

The theory also states that gas particles are in constant random motion and that their motion is determined by their kinetic energy.

SummaryAs the temperature of a gas is increased, the kinetic energy and velocity of the gas particles also increase. This relationship is governed by the kinetic theory of gases, which states that the motion of gas particles is related to their temperature, pressure, and volume.

Learn more about kinetic energy click here:

https://brainly.com/question/8101588

#SPJ11

Answer:

option 3, as circuit breakers are mostly used as precautions

When a distant star is traveling directly away from Earth with a speed of 38500 km/s, the wavelengths in the star's spectrum as measured on Earth would be greater than the wavelengths we would observe if the star were at rest relative to us. This effect is known as the redshift.

The redshift occurs because the motion of the star causes a Doppler shift in the wavelengths of light emitted by the star. The Doppler effect causes the wavelengths of light to stretch out (i.e., increase in wavelength) if the source is moving away from the observer. The amount of stretching or redshift is proportional to the velocity of the star relative to the observer and the wavelength of the light.

In this case, the star is moving away from Earth at a high velocity of 38500 km/s, so the wavelengths of light that we observe on Earth will be stretched out or increased compared to the wavelengths emitted by the star when it was at rest. This means that the wavelengths in the star's spectrum will be greater (i.e., shifted towards the red end of the spectrum) than the wavelengths we would observe if the star were at rest relative to us.

To know more about wavelengths refer here

https://brainly.com/question/31143857#

#SPJ11

The ISS maintains equilibrium using thrusters, gyroscopes, and aerodynamically stable components.

The International Space Station (ISS) maintains equilibrium in spite of unbalanced forces through the use of thrusters and gyroscopes. The thrusters can be fired in short bursts to adjust the station's position, while gyroscopes help to maintain its orientation in space.

The station's position and orientation are constantly monitored by ground control, which can send commands to adjust the thrusters and gyroscopes as needed to make equilibrium.

To know more about International space station, visit,

https://brainly.com/question/18650677

#SPJ1

Answer:

0m/s^2

Explanation:

have a beautiful day ahead

If F = 37 N, the static frictional force between the block and the table and the minimum force required to move it must be equal.

It is the force that regulates itself. The value of static friction varies from zero to the smallest force required to initiate motion. The formula for determining static friction is as follows: Normal Force divided by the static friction coefficient is static friction.

Although the maximum static friction will rise, the frictional force will always be the same as the weight in mg because friction cannot accelerate an object. Because FrN can take any value less than N to balance the weight, this is the case.

To know more about static frictional visit :-

https://brainly.com/question/13000653

#SPJ1

Option (B) is the correct answer.

The net force on the bookshelf is 32.1 N.

The force produced by two surfaces coming into contact and sliding against one another is referred to as frictional force. The following variables impact the frictional force: The surface texture and the amount of force pressing them together have the most effects on these forces.

Frictional force = 2.9 N

Horizontal force applied on the bookshelf = 35 N

Net force = Horizontal force - frictional force

Net force = (35 - 2.9)  N = 32.1 N

Therefore, net force acting on the bookshelf is 32.1 N .

To learn more about friction:

https://brainly.com/question/13000653

#SPJ4

Answer:

See image

Explanation:

Plato

On a graph of galaxy colors and luminosities, spiral galaxies are usually found in the blue cloud.

any of the star systems and interstellar materials that make up galaxys. Hundreds of billions of stars can be found in several of these massive assemblages.

From dim, hazy dwarf objects to magnificent spiral-shaped giants, nature has created a vastly diverse assortment of galaxies. Almost all galaxies seem to have formed shortly after the universe started, and they can be found everywhere throughout space, even in the deepest regions that are beyond the reach of even the most potent contemporary telescopes. Galaxies typically exist in groups called clusters, some of which are then combined into larger clusters with a diameter of hundreds of millions of light-years. (A light-year is a distance traveled by light during one year at a speed of 300,000 km/sec or 650,000,000 mph.)

Learn more about galaxy here:

https://brainly.com/question/10019924

#SPJ4

Simple harmonic motion is a type of motion where an object moves back and forth in a repeating pattern. It is like a pendulum swinging back and forth or a spring bouncing up and down.

For an object to exhibit simple harmonic motion, there are two conditions that must be met. The first is that there must be a restoring force that acts on the object.

This means that when the object is moved away from its resting position, there is a force that pulls or pushes it back towards that position. In the case of a pendulum, gravity provides the restoring force.

In the case of a spring, the elastic force of the spring provides the restoring force.

The second condition is that the restoring force must be proportional to the displacement of the object. This means that the further the object is moved away from its resting position, the greater the restoring force will be.

This results in the object oscillating back and forth in a predictable pattern.

So, in summary, simple harmonic motion is a type of motion where an object moves back and forth in a repeating pattern.

It occurs when there is a restoring force that acts on the object and that force is proportional to the displacement of the object.

To know more about harmonic motion refer here

https://brainly.com/question/30404816#

#SPJ11

If the coefficient of friction is.2, the frictional force is 100 N.

The resistive force of friction (Fr) divided by the normal or perpendicular force (N) pushing the objects together yields the coefficient of friction (fr), which is a numerical value. The formula fr = Fr/N serves as a representation of it.

F = N is the equation for frictional force. Let's use the 2-kg block of wood that is resting on a table to be pushed from rest as an example. The static friction coefficient is taken into account in this situation. The static coefficient of wood is 0.5.

F = μN

F = 2 × 100 ×cos60°

F = 200 × 1/2

F = 100 N

To know more about frictional force visit:-

https://brainly.com/question/1389727

#SPJ1

The region where infrared radiation from Earth's surface is most strongly reflected back is the atmosphere, specifically in the presence of greenhouse gases.

Greenhouse gases, such as carbon dioxide (CO₂), methane (CH₄), and water vapor (H₂O), absorb and re-emit infrared radiation, which increases the overall temperature of the Earth. This process, known as the greenhouse effect, prevents the infrared radiation from escaping into space and instead reflects it back to the Earth's surface.

In conclusion, the Earth's atmosphere, particularly due to the presence of greenhouse gases, is the region where infrared radiation is most strongly reflected back to the Earth's surface.

To know more about infrared radiation, visit:

https://brainly.com/question/30556527

#SPJ11

Answer:

2730.304 KJ

Explanation:

 How much heat is required to convert 0.8 kg of ice at  -35°C into steam at 100 C?

Given that:

mass of ice (m) = 0.8 kg = 800 g

Initial temperature (\(T_i\)) = -35°C = 238 K

final temperature (\(T_n\))= 100°C = 373 K

Specific heat of ice (\(S_i\)) = 2.108 J/g.K

Specific heat of water (\(S_w\)) = 4.18 J/g.K

Latent heat of fusion (\(L_f\)) = 334 J/g.

Latent heat of vaporization (\(L_v\)) = 2230 J/g.

\(\Delta T=T_n-T_i=373-238=135K\)

Total heat (Q) required to increase the temperature of ice from the initial temperature of 238K to final temperature of 373 K is given by the equation:

\(Q=m\Delta TS_i+m\Delta TS_w+mL_f+mL_v\\Q=800(135)*2.108+800(135)*4.18+800*334+800*2230\\Q=227664+451440+267200+1784000=2730304J\\Q=2703.304KJ\)

You can prevent a mask from fogging under water by lowering the surface tension of the water.

Surface tension is the measure of how strongly the molecules of a liquid are attracted to each other at the surface.

When the surface tension of water is high, it causes water molecules to form a cohesive layer, which can trap air and lead to fogging on surfaces like a diving mask. To prevent this, an anti-fog solution or spray can be applied to the inside of the mask's lenses.

These solutions work by reducing the surface tension of the water droplets that form on the lens, allowing them to spread out and form a thin, uniform layer that is less likely to fog up.

A well-fitting mask can also help prevent water from seeping in, which can contribute to fogging.

To learn more about surface tension, click here:

https://brainly.com/question/11348644

#SPJ11

The acceleration due to gravity on jupiter is 23 m/s². And the correct option is D. 23 m/s².

Acceleration due to gravity is the acceleration gained by an object due to gravitational force. Its SI unit is m/s².

To calculate the acceleration due to gravity on jupiter, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1 and solve for g'

Hence, the acceleration due to gravity on jupiter is 23 m/s².

Learn more about acceleration due to gravity here: https://brainly.com/question/88039

#SPJ1

Answer:

Explanation:

If the force of 2000 N is directed towards the right and the friction is directed towards the left, the 2000 N force is positive and the other is negative. To find the resultant force:

2000 - 500 = 1500 N to the right

A. X is approximately a binomial random variable because it is the number of successful trials (students giving a positive rating) out of a fixed number of trials (500 students selected) and the trials are independent.

B. To use a Normal approximation, we can use the Central Limit Theorem which states that the sum of a large number of independent and identically distributed random variables will tend to have a normal distribution. So, we can approximate X ~ N(np, npq), where n = 500, p = 0.72, and q = 1 - p = 0.28.

Then, we can find the probability that 400 or more students would give their teacher a positive rating by using the cumulative distribution function (CDF) of a Normal distribution.

P(X >= 400) = P(Z >= (400-np)/sqrt(npq))

where Z is a standard normal variable

We can use a standard normal table or calculator to find P(Z >= (400-np)/sqrt(npq))

Learn more about Central Limit Theorem here: https://brainly.com/question/18403552

#SPJ4

One of the four mentioned is not a plate boundary is b. insurgent.

Plate tectonics is the theory that explains the movement of Earth's lithosphere, which is composed of large plates that glide over the mantle. The plates are separated by three types of plate boundaries: divergent, convergent, and transform. Transform boundary is where two plates slide past one another in opposite directions, either horizontally or diagonally. The San Andreas Fault is a well-known example of a transform boundary. Divergent boundaries are where two plates pull away from each other and new crust is created.

The Mid-Atlantic Ridge is an example of a divergent boundary and convergent boundary is where two plates move towards each other and one plate gets consumed or goes under the other. The Himalayas were created as a result of the collision of two convergent plates, the term insurgent is not used in plate tectonics. The correct term that describes the three main types of plate boundaries is not insurgent but instead transform, divergent, and convergent boundaries. So the correct answer is b. insurgent.

Learn more about plate tectonics at:

https://brainly.com/question/29773676

#SPJ11

Answer:

wavelength is equal to speed over frequency

A boat in the trough of a wave takes 3 seconds to reach the highest peak of the wave, then its wavelength will be equal to 30 m.

The frequency of an event is its repetition per time unit. In a contrast to spatial frequency, it is also often referred to as temporal frequency, and in a contrast to angular frequency, it's often referred to as conventional frequency.

The standard unit is hertz (Hz), which is equal to one per second. The reciprocal of frequency is period, which itself is defined as the amount of time for one cycle of a repeating occurrence.

From the given data in the question,

Total time, t = 3s + 3s

t = 6 seconds.

Frequency, f = 1/6s

f = 0.1666 Hz

Now, let's find out the wavelength,

λ = υ/f

= 5/0.1666

λ = 30 m.

Therefore, the wavelength will be equal to 30 m.  

To know more about Frequency:

https://brainly.com/question/5102661

#SPJ2

Answer: the velocity is -2

Explanation: good luck don't think its wrong everyone calls me the human calculator