adding solar panels to the roof that add heat to the inside of the cat house a

answers:
radiation
convection
conduction

Answer:

3

Explanation:

According to experts, the greatest potential for energy savings in transportation lies in implementing more efficient modes of transportation such as electric vehicles, public transportation, cycling, and walking.

Additionally, reducing the number of single-occupancy vehicles on the road through carpooling and ridesharing can also lead to significant energy savings. Another important factor is improving infrastructure to support these alternative modes of transportation, such as building more bike lanes and expanding public transportation systems.

Overall, a shift towards sustainable transportation options has the potential to significantly reduce energy consumption and greenhouse gas emissions in the transportation sector.

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Answer:

it is nicotine

Explanation:

your welcome

Answer:

Nicotine

Explanation:

Answer:

450 kgm/s upward

Explanation:

From the question,

Change in monentum = mass× change in velocity

ΔM = mΔv....................... Equation 1

ΔM = m(v-u).................. Equation 2

Where ΔM = Change in momentum, m = mass of the gymnast, v = final velocity, u = initial velocity

Given: m = 50 kg, v = -4 m/s. u = 5 m/s

Substitute these values into equation 2

ΔM = 50(-4-5)

ΔM = 50(-9)

ΔM = -450 kgm/s

Hence the change in momentum of the gymnast is 450 kgm/s upward

Answer:

So this is just a ratio/proportion problem

so lets say its in boys:minutes

so in the first scenario

20:8

and we want to find

x:10

So proportion really

20/8=x/10

cross multiply

25

25 boys can sweep it in 10 minutes

Answer:

Mass will not change based on location, while weight will change based on gravitational pull.

Explanation:

The formula for weight is mass*gravitational pull, hence weight changes based on gravitational pull

Mass will not change based on location, while weight will change based on gravitational pull. This is a true statement about mass and weight.

The most fundamental characteristic of matter is mass, which is one of the fundamental quantities in physics. Mass is a term used to describe how much matter is there in a body. The kilograms is the SI unit of mass (kg). A body's mass remains constant at all times.

The amount of weight t indicates how much gravity is pulling on a body. The weight formula is provided by: w = mg

Weight being a force The SI unit of weight is the Newton, which is also the same as the SI unit of force (N). When we look at how weight is expressed, we can see that it depends on both mass and the acceleration caused by gravity; while the mass may not change from one location to another, the acceleration caused by gravity does.

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To find the current in the resistor, we can use Ohm's Law and the concept of equivalent resistance. Thus, option A is correct.

First, let's calculate the equivalent resistance of the three cells connected in parallel. When resistors are connected in parallel, the reciprocal of the equivalent resistance is equal to the sum of the reciprocals of the individual resistances:

1/Req = 1/R1 + 1/R2 + 1/R3

Given that R1 = R2 = R3 = 22 Ω (internal resistance of each cell), we can substitute the values:

1/Req = 1/22 + 1/22 + 1/22

1/Req = 3/22

Taking the reciprocal of both sides, we find:

Req = 22/3 Ω

Now we can use Ohm's Law to calculate the current (I) in the resistor. Ohm's Law states that the current flowing through a resistor is equal to the voltage across it divided by its resistance:

I = V/R

Given that V = 1.1 V (emf of each cell) and R = 32 Ω (resistance), we can substitute the values:

I = 1.1/32

Calculating this value, we find:

I ≈ 0.034375 A

Therefore, the current in the resistor is approximately 0.034375 A.

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To solve this problem, we need to find the velocity function of the train, given the acceleration function, and then determine the velocity of the train at a specific time.

Given:

To find the velocity function, we integrate the acceleration function with respect to time:

To integrate -1120(1+4t)^-3, we can use the substitution method. Let u = 1+4t, then du = 4 dt. Rewriting the equation:

Integrating this, we get:

Now, we substitute back u = 1+4t:

To determine the value of the constant C, we use the initial condition where t = 0 and v = 140 mi/hr:

Therefore, the velocity function of the train is:

To find the velocity of the train at a specific time, we substitute the desired value of t into the velocity function. If you have a specific time t in mind, please provide it, and I can calculate the velocity for you.

Velocity is a vector quantity that indicates how fast an object is moving. The magnitude of this vector is called speed and is expressed in meters per second.

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Step 2 Answer: Apes, in general, engage in greater suspensory arm-hanging than baboons. The most tense arm-hanging is between Siamang and an orangutan.

They reside in tight woodland/closed forest. Bonobo maintains the most bipedal posture. It dwells in a savanna/open forest setting. The most bipedal walking is done by baboons and chimps. They dwell in a savanna/open forest setting. Step 3's answer is: 5. Based on the trends observed above, it is impossible to say if the ape lineage was more likely than the other primates to become bipedal. According to the statistics, orangutans and siamangs participate in the most suspensory arm-hanging, whereas bonobos and baboons engage in the most bipedal standing and walking. It is impossible to draw any conclusions based on the patterns.

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Answer:

whisper is not a Matter its a sound

Answer:

Whisper

Explanation:

A whisper is not made of a substance, it is simply a sound. A cloud is mad of particles, making it matter. Same for air and an apple. Hope this helps you.

The fundamental frequency if the pipe is open at both ends of a 3.00-m long pipe is in a room where the temperature is 20°C is 57Hz.

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Complete question:

A 3.00-M Long Pipe Is In A Room Where The Temperature Is 20°C. What Is The Fundamental Frequency If The Pipe Is Closed At One End?

A.57 Hz

B. 114 Hz

C. 29 Hz

D. None Of The Above

Answer:

p1 = 9 watt

Explanation:

first find the current :

i = V/r1 +r2 = 12 / (1+3) = 3 A

Next, find the voltage in the 1 ohm resistor:

V1 = r1 * i = 1 * 3 = 3 volt

Now calculate power in the 1 ohm resistor :

P1 = i * V1 = 3 * 3 = 9 watt

The difference in the emission of interstellar hydrogen atoms between radio waves at a wavelength of 21cm and visible light is due to the physical conditions of the hydrogen clouds.

Hydrogen atoms emit radio waves at a wavelength of 21cm when their electrons change their spin state from parallel to anti-parallel. This transition corresponds to a change in energy that is characteristic of hydrogen atoms in interstellar space, where the density of particles is low and the temperature is cold.

However, some hydrogen clouds can emit visible light when the conditions are right for the excitation of the hydrogen atoms. This can happen, for example, when the density of particles is high enough for collisions to excite the electrons of the hydrogen atoms to higher energy levels, and then they release that energy as visible light when they return to their ground state.

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Answer:

0.71 s

Explanation:

The formula used will be the formula for a free falling object acted on by gravity.

Time/Period(T) = √[Length/Distance(L)]/[Acc'n due

to gravity(g)]

T = √[5m/9.8m/s²]

T = 0.71 s

Answer:

The answer is (d) is totally reflected

Explanation:

Using the total internal reflection concept.

This concept state that:

"If the angle of incidence is greater than the critical angle then the light will not refract but it will reflect back totally"

Using the above statement, as incident angle is 42 degree and critical angle is 41 degree it means incident angle is greater than the critical angle. Therefore, light will not refract but it will totally reflected.

Answer: D. 1.4 meters/second

Explanation:

To calculate average Velocity, the proportion of the total Displacement or distance traveled to the total time taken during that Displacement is calculated.

Total Displacement from rest(that is 0) to 15 seconds (21, on the graph)

(0, 21)

Total time taken = 15 seconds

Average Velocity = (total Displacement / total time taken)

Average Velocity = (21 - 0) / (15 - 0)

Average Velocity = 21 / 15

Average Velocity = 1.4 meters per second

A scientist is studying how the temperature of a baseball affects how far it goes when hit by a bat. The scientist aims to make the experiment as repeatable as possible by following specific procedures that will allow for consistency and accuracy. The following steps will make the experiment more repeatable:

1. Standardization of the equipment: The scientist must ensure that the equipment used in the experiment is standardized. They should use the same type of bat, ball, and equipment for every trial to make the experiment as repeatable as possible.

2. Standardization of the environment: The scientist must maintain a standard environment for the experiment. The temperature, humidity, and atmospheric pressure must be the same for every trial.

3. Randomization: The scientist should randomly choose the order of trials to eliminate any potential biases.

4. Multiple Trials: The scientist should repeat the experiment multiple times to obtain accurate and consistent results. This will help to identify any anomalies or errors.

5. Record Keeping: The scientist must maintain accurate records of all the data collected from the experiment. They should record the date, time, and temperature of the ball and any other relevant information that can help to repeat the experiment.

6. Data Analysis: The scientist should analyze the data obtained from the experiment using statistical methods to identify any trends or patterns.

By following these steps, the scientist can make the experiment more repeatable and achieve accurate and consistent results.

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An incandescent light bulb produces a continuous visible spectrum. The correct answer is C. Continuous.

What is a continuous spectrum?

A continuous spectrum refers to a type of spectrum that contains an unbroken range of wavelengths or colors.

In the case of visible light, a continuous spectrum encompasses all the colors from red to violet without any gaps or missing wavelengths.

An incandescent light bulb operates by heating a filament until it becomes white-hot and emits light.

The emitted light consists of a continuous spectrum of colors, covering the entire range of visible light.

This means that an incandescent light bulb produces light of all colors within the visible spectrum, from red to violet, without any gaps or missing wavelengths.

Therefore, the correct option is C.

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An incandescent light bulb produces a continuous spectrum of visible light.

An incandescent light bulb produces a continuous spectrum of visible light. When an electric current passes through the filament of the bulb, the filament heats up and emits light. The spectrum of this emitted light is continuous, meaning it contains all the colors of the visible spectrum.

However, the spectrum of an incandescent bulb is not evenly distributed across all wavelengths. It tends to have a higher intensity in the yellow and red regions of the spectrum. This is because the filament is heated to such a high temperature that it emits light at all wavelengths within the visible range.

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The second law of thermodynamics is the principle that the total entropy of a closed system cannot decrease over time and the maximum fraction of heat that can be transformed into electricity can be calculated by the expression of efficiency.

According to the second law of thermodynamics, any process that occurs in a closed system will always increase the total entropy of that system, and the efficiency of the process will be limited by the increase in entropy.

One consequence of the second law of thermodynamics is the statement of Carnot's theorem, which provides a formula for the maximum fraction of heat that can be transformed into work (or electricity) by an ideal engine. Carnot's theorem states that the maximum efficiency of a heat engine operating between two temperatures is given by the formula:

\(efficiency = 1 - (T_{low} / T_{high})\)

where \(T_{low}\) is the absolute temperature of the cold reservoir and \(T_{high}\) is the absolute temperature of the hot reservoir.

This formula shows that the efficiency of a heat engine is limited by the temperature difference between the hot and cold reservoirs. As the temperature difference decreases, the maximum efficiency of the engine also decreases, and the fraction of heat that can be transformed into work or electricity becomes smaller. This means that, in practice, it is very difficult to achieve 100% conversion of heat into work or electricity, due to the limitations imposed by the second law of thermodynamics.

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Answer:

the worker is doing work because he is moving the bale of cotton

Answer:

x = 1/2

Explanation:

5x/x + 2 = 3x/x + 1

do cross multiplication

(x + 2) * 3x = (x + 1) * 5x

3x^2 + 6x = 5x^2 + 5x

6x - 5x = 5x^2 - 3x^2

x = 2x^2

x/x^2 = 2

1/x = 2

1 = 2x

1/2 = x

Answer:

translational energy

Explanation:

because is diatomic

In Julio's experiment, the control would be the balloon that was not rubbed with a cloth (option b).

The control is an essential part of an experiment, as it serves as a basis for comparison and helps to determine the cause of observed changes. In this case, the control balloon helps to isolate the effect of rubbing the cloth on the other balloon.

When Julio rubs a balloon with a cloth, he is creating a buildup of static electricity, which can cause the balloon to attract objects, such as his hair. By using a second balloon without rubbing it with a cloth, he can compare the effects of the static electricity generated in the first balloon to the behavior of the second balloon, which has not been subjected to the same treatment.

By comparing the two balloons, Julio can better understand the influence of rubbing the cloth on the balloon and the role of static electricity in this phenomenon. Without the control balloon, it would be more difficult to determine whether the observed effects are solely due to the rubbing of the cloth or other factors.

In conclusion, the control in Julio's experiment is the balloon that was not rubbed with a cloth. This control helps to isolate the effects of rubbing the cloth and demonstrates the role of static electricity in the experiment. The correct option is b.

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Answer: 83.41m

Explanation:

v^2=vo^2+2a(x-xo)
x=?
xo=0
a=4.1m/s^2
v=28m/s
vo=10m/s

784=100+2(4.1)(x-0)
684=8.2x
x=83.4146341463
x=83.41m

you're welcome

Answer:

density=mass/volume.

The intensity of a laser beam is a measurement of its power per unit area. It is defined as the amount of energy provided by the laser per unit time and laser beam area.

The laser beam intensity is measured in watts per square metre (W/m2). The intensity of a laser beam may be described mathematically as I = P/A where I is the laser beam's intensity in watts per square metre (W/m2), P is the laser beam's power in watts (W), and A is the laser beam's size in square metres (m2). For instance, if a laser beam has a strength of 5 watts and a surface area of 0.001 square metres, then its intensity would be: I = P/A = 5 W / 0.001 m² = 5000 W/m² Therefore, the intensity of the laser beam in this example is 5000 watts per square meter.

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