what power does the resistor consume if it is connected to a 12.6- vv car battery? assume that rr remains constant when the power consumption changes.

Answer

heyyy ok its b

Explanation:

Answer:

See below

Explanation:

An object at rest tends to stay at rest unless acted on by a force

An object at rest will stay at rest until a force touches it.

such has..

a pencil, not moving and still.

you tap the pencil, or pick it up. by using your force to pick it up.

Supposing you are stuck on a strange asteroid and you begin walking. You walk in a straight line for 20 miles and the stars overhead appear to shift by 10 degrees. The circumference of the asteroid is approximately 2071.02 km.

Due to walking, the observer has moved from his original position on the asteroid and has reached a new position. When he moved, he has seen a shift in the stars’ position. This shift in the stars' position is due to the curvature of the asteroid on which the observer is walking. As the stars appear to have moved by 10 degrees, it means that the observer has moved along an arc of 10 degrees in the opposite direction (as it appears to be opposite to the observer).  

Let's denote the circumference of the asteroid by C km. According to the question, the observer walks a distance of 20 miles which is equal to 32.19 km (1 mile = 1.609 km). Also, he moves along an arc of 10 degrees. The total circumference of the asteroid can be calculated using the formula given below:

Arc Length (L) = (theta / 360) x (2 x π x r)

Where:

theta = central angle in degrees

π = 3.1416

r = radius of the asteroid

Since the observer has walked 20 miles, he has moved along an arc of 10 degrees. So, we can use the above formula to calculate the radius of the asteroid.

32.19 km = (10 / 360) x (2 x 3.1416 x r)r = (32.19 x 360) / (10 x 2 x 3.1416)

Thus, the radius of the asteroid is approximately 329.7 km. The circumference of the asteroid can be calculated as:

C = 2 x π x r= 2 x 3.1416 x 329.7= 2071.02 km

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If an electron vibrates back and forth in an clean wire with a frequency of 60.0 Hz, then it will make 2.2×10⁵ cycles. in 1.0 h. Hence option D is correct.

Electric charge is the physical property of matter that experiences force when it is placed in electric field. F = qE where q is amount of charge, E = electric field and F = is force experienced by the charge. there are two types of charges, positive charge and negative charge which are generally carried by proton and electron resp. like charges repel each other and unlike charges attract each other. the flow charges is called as current. Elementary charge is amount of charge a electron is having, whose value is 1.602 x 10⁻¹⁹ C

Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.

Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform. There are two types of the wave longitudinal wave and transverse wave.

Frequency is nothing but the number of oscillation in a unit time.

Given,

frequency f = 60.0 Hz.

time t = 1.0 h = 60*60 = 3600s

F = number of cycles/time

number of cycles = F×time

The number of cycles in 1 Hr is

60*3600 = 2.2×10⁵ cycles.

Hence option D is correct.

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Answer:

0.57 kg

Explanation:

We are given that

Force, F=20 N

Acceleration ,a =\(35m/s^2\)

We have to find the mass of Aero-plane.

To find the value of mass we will divide the force by acceleration.

We know that

Force, F=ma

Using the formula

\(20=m\times 35\)

\(\frac{20}{35}=m\)

\(m=0.57 kg\)

Hence, the mass of the aero-plane=0.57 kg

Answer:x rays are electromagnetic waves.

x rays are transverse waves

x rays travel at the speed of light

Explanation:

The airline will need to have at least 167 passengers on each flight to break even.

To calculate the number of passengers needed to break even, we need to consider the total costs and the revenue generated per flight.

The total cost per flight consists of the fixed costs (£25,000) and the variable costs (£75 per passenger). The revenue per flight is determined by the ticket price (£225) multiplied by the number of passengers.

Let's denote the number of passengers as 'P'. The total cost per flight is given by:

Total Cost = Fixed Costs + (Variable Cost per Passenger * Number of Passengers)

Total Cost = £25,000 + (£75 * P)

The revenue per flight is given by:

Revenue = Ticket Price * Number of Passengers

Revenue = £225 * P

To break even, the total cost should equal the revenue:

£25,000 + (£75 * P) = £225 * P

Now, we can solve this equation for P to find the number of passengers needed to break even:

£25,000 + (£75 * P) = £225 * P

£25,000 = £225 * P - £75 * P

£25,000 = £150 * P

P = £25,000 / £150

P ≈ 166.67

Since the number of passengers must be a whole number, we round up to the nearest whole number:

P = 167

The airline will need at least 167 passengers on each flight to break even. However, since the maximum capacity of the aircraft is 200 passengers, the airline will need to fill the aircraft to its maximum capacity to break even on each flight.

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An example of kinetic energy is pouring rain.The correct response to this question is (c) pouring rain.

Kinetic energy is the capacity for a moving thing to perform work. An object must be moving in order for it to have kinetic energy. Kinetic energy is measured in joules (J), much like all other types of energy.

There must be some kind of motion that an object goes through for it to have kinetic energy. By taking them as a whole and ignoring any potential "kinetic energy" that their molecules may have, all the other alternatives in this situation are just of stationary objects.

Therefore, an example of kinetic energy is pouring rain.The correct response to this question is (c) pouring rain.

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Answer: I think ions I’m not 100% sure if it’s not let me know

Explanation:

Answer:

the current will improve in performance and tell me if im correct

Answer:

416 kj

Explanation:

hope it helps

Answer:

416 kj

Explanation:

For this particular problem, we are not dealing with a temperature change, rather, we are dealing with a scenario in which we are melting ice. Hence, we need to use the delta H fusion equation:

q=m⋅ΔHfus

Hope that I could help.

Answer:

A.The atoms vibrate faster due to the conduction of heat through atoms in the spoon.

Answer:

2m

Explanation:

The closer the objects are, the more gravitational force there is

The main differences between sound waves and light waves are their medium of propagation, speed of propagation, and nature of interaction. Sound waves require a medium and travel at slower speeds compared to light waves.

Medium of Propagation:

Sound waves require a medium, such as air, water, or solids, to propagate. They are mechanical waves that travel through the vibration of particles in the medium. On the other hand, light waves can propagate through vacuum or empty space and do not require a medium. They are electromagnetic waves that consist of oscillating electric and magnetic fields.

Speed of Propagation:

Sound waves travel at a much slower speed compared to light waves. The speed of sound depends on the medium it travels through, with an approximate speed of 343 meters per second (m/s) in air at room temperature. In contrast, light waves travel at a constant speed of approximately 299,792,458 meters per second (m/s) in a vacuum, which is often rounded to 3.00 x 10^8 m/s for simplicity.

Nature of Interaction:

Sound waves interact differently with objects compared to light waves. Sound waves can be diffracted, reflected, refracted, and absorbed by objects in their path. They can bend around obstacles and travel through materials of different densities. In contrast, light waves can exhibit properties such as reflection, refraction, diffraction, interference, and polarization. They can be reflected off surfaces, refracted through lenses, diffracted around edges, and exhibit interference patterns.

Medium of Propagation:

Sound waves require a medium for their propagation because they rely on the mechanical vibrations of particles in the medium to transmit energy. When an object vibrates, it compresses and rarefies the surrounding particles, creating regions of higher and lower pressure. These pressure variations travel through the medium as a wave. For example, in air, sound waves propagate as compression waves, where particles compress together in regions of high pressure and spread apart in regions of low pressure.

Light waves, on the other hand, are electromagnetic waves that consist of oscillating electric and magnetic fields. They do not require a medium to propagate because the electric and magnetic fields can self-sustain and travel through empty space. This property allows light waves to travel through vacuum, making them capable of reaching us from distant stars and galaxies.

The main differences between sound waves and light waves are their medium of propagation, speed of propagation, and nature of interaction. Sound waves require a medium and travel at slower speeds compared to light waves. They interact differently with objects, while light waves exhibit properties such as reflection, refraction, diffraction, interference, and polarization. These distinctions arise from the fundamental differences in the nature of sound waves as mechanical waves and light waves as electromagnetic waves.

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a) On a wet basis, the molar composition of the gas is approximately 0.813 mol propane, 0.055 mol n-butane, and 0.132 mol water. The ratio of mol H₂O to mol dry gas is 0.162 mol H₂O/mol dry gas.

b) The required air feed rate is approximately 65.9 kmol/h. If the combustion were only 65% complete, the required air feed rate would increase to approximately 101.4 kmol/h.

a) To calculate the molar composition on a wet basis, we convert the weight percentages to mole fractions using the molar masses of propane, n-butane, and water. The molar composition is determined by dividing the weight percentage by the respective molar mass and normalizing the values to sum up to 1. The ratio of mol H₂O to mol dry gas is determined by dividing the mol water by the sum of mols of propane and n-butane.

b) To calculate the required air feed rate, we use the stoichiometry of the combustion reaction between butane and air. The balanced equation shows that 1 mol of butane reacts with 13.5 mol of air. Considering the 25% excess air requirement, we multiply the stoichiometric air requirement by 1.25. If the combustion is only 65% complete, the remaining butane requires additional air to achieve complete combustion. Therefore, the required air feed rate increases to account for the unreacted butane.

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Solidarity and History" by Karl H. Metz is a book that explores the institutions and social concepts of solidarity in 19th century Western Europe. Through his research, Metz sheds light on the historical context and significance of solidarity during this period, providing readers with a deeper understanding of the concept and its role in shaping society.

"Solidarity and History" is a book written by Karl H. Metz that focuses on the institutions and social concepts of solidarity in 19th century Western Europe. In this book, Metz explores the idea of solidarity and its significance within the historical context of that time period.

Solidarity refers to the unity and mutual support among individuals or groups, particularly in the face of common challenges or goals. In the 19th century, Western Europe experienced various social, economic, and political changes, such as the Industrial Revolution and the rise of nationalism. These changes had a profound impact on the concept of solidarity and how it was understood and practiced.

Metz's book delves into the institutions that fostered solidarity during this period, such as trade unions, social organizations, and political movements. It examines how these institutions shaped the understanding of solidarity and facilitated collective action among individuals who shared similar interests and aspirations.

Additionally, the book explores the historical context in which solidarity emerged as a significant concept in Western Europe. By examining key events and movements of the time, such as the French Revolution and the rise of socialism, Metz provides insights into the historical forces that influenced the development and evolution of solidarity as a social concept.

Through his research and analysis, Metz offers readers a comprehensive understanding of the role of solidarity in 19th century Western Europe. By studying the institutions and social concepts of solidarity during this period, readers can gain valuable insights into the historical context and significance of this important concept.

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Answer:

The force needed to launch the projectile is 150000 N.

Explanation:  

We can find the force using the following equation:

\( F = ma \)

Where:

m: is the mass = 15 kg

a: is the acceleration

First, we need to find the acceleration of the projectile:

\( v_{f}^{2} = v_{0}^{2} + 2ax \)                          

Where:

\(v_{f}\): is the final speed

\(v_{0}\): is the initial speed = 0

x: is the distance = 2 m

The final speed is:

\(v_{f} = \frac{1 km}{5 s}*\frac{1000 m}{1 km} = 200 m/s\)

Then, the acceleration is:

\(a = \frac{v_{f}^{2}}{2x} = \frac{(200 m/s)^{2}}{2*2 m} = 10000 m/s^{2}\)

Finally, the force is:

\(F = ma = 15 kg*10000 m/s^{2} = 150000 N\)

Therefore, the force needed to launch the projectile is 150000 N.

I hope it helps you!  

Answer:

is called so because it is applicable on all bodies having mass, and the bodies will be governed by the same law, that is newton's law of gravitation. Thus, as it is applicable universally, it is called as universal law

F=ma

Newton's second law states that force is proportional to what is required for an object of constant mass to change its velocity. This is equal to that object's mass multiplied by its acceleration. We use Newtons, kilograms, and meters per second squared as our default units, although any appropriate units for mass (grams, ounces, etc.) or velocity (miles per hour per second, millimeters per second2, etc.) could certainly be used as well - the calculation is the same regardless.

The statements which are correct about calculating LaToya's mechanical advantage are—The input force is 50 N, the output force is 450 N and the mechanical advantage is 10.Therefore, the correct option is A, D and E.

Mechanical advantage is the ratio of output force to input force. In this case, LaToya is using a force of 50 N to pull a cart that weighs 500 N. The output force is the weight of the cart minus the force LaToya exerts on it:

Output force = 500 N- 50 N = 450 N

To see why statement F is incorrect, note that the formula for mechanical advantage is:

Mechanical advantage = output force / input force

Substituting the values we found earlier, we get:

Mechanical advantage = 450 N / 50 N = 9

So the mechanical advantage is actually 9, not 100.

Therefore, the correct option is A, D and E.

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The gauge pressure at the faucet on the second floor when turned off is approximately 2.08 x 10⁵ Pa.

To find the gauge pressure at the faucet on the second floor, we need to consider the height difference (4.50 m) and calculate the hydrostatic pressure due to this height change.

Hydrostatic pressure (ΔP) can be calculated using the formula ΔP = ρgh, where ρ is the density of water (1000 kg/m³), g is the acceleration due to gravity (9.81 m/s²), and h is the height difference (4.50 m).

ΔP = 1000 kg/m³ × 9.81 m/s² × 4.50 m ≈ 44145 Pa

To find the gauge pressure at the second-floor faucet, subtract the hydrostatic pressure from the initial gauge pressure:

Gauge pressure (second floor) = 2.52 x 10⁵ Pa - 44145 Pa ≈ 2.08 x 10⁵ Pa

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Parallel and Serial Dilution Calculations:

To perform parallel and serial dilutions, follow the steps below:

Parallel Dilutions:

Step 1: Determine the desired concentrations for the five dilutions. Let's assume the desired concentrations are as follows: 0.1 M, 0.05 M, 0.025 M, 0.0125 M, and 0.00625 M.

Step 2: Calculate the dilution factor (DF) for each dilution. The dilution factor represents the ratio of the final volume to the initial volume.

For example, if you want to prepare a 0.05 M dilution with a final volume of 25 mL, and you have a 0.1 M stock solution:

DF = (final volume)/(initial volume)

= 25 mL / 100 mL

= 0.25

Step 3: Calculate the volume of the stock solution required for each dilution. This can be determined using the following formula:

Volume of stock solution = (desired concentration) x (final volume) / (stock concentration)

or the example above:

Volume of stock solution = (0.05 M) x (25 mL) / (0.1 M)

= 12.5 mL

Step 4: Add the calculated volume of stock solution to an appropriate volume of diluent (e.g., water) to obtain the desired final volume.

Serial Dilutions:

Step 1: Determine the desired concentrations for the five dilutions, similar to the parallel dilutions.

Step 2: Choose a constant dilution factor for each subsequent dilution. For example, let's use a dilution factor of 10 for each step.

Step 3: Calculate the volume of stock solution and diluent for each dilution, following the same formula as in parallel dilutions.

For example, if you want to prepare a 0.05 M dilution with a final volume of 25 mL and a dilution factor of 10:

Volume of stock solution = (0.05 M) x (25 mL) / (0.1 M)

= 12.5 mL

Volume of diluent = final volume - volume of stock solution

= 25 mL - 12.5 mL

= 12.5 mL

Step 4: Transfer the calculated volume of stock solution to the first dilution tube and add the calculated volume of diluent. Mix thoroughly.

Step 5: Transfer the entire contents of the first dilution tube to the second dilution tube, and add the calculated volume of diluent. Mix thoroughly.

Repeat Step 5 for subsequent dilution tubes until you have prepared the desired number of dilutions.

Using the UV-Vis Spectrometer:

To use the UV-Vis spectrometer, follow these steps:

Step 1: Turn on the spectrometer and allow it to warm up for the recommended time specified by the manufacturer.

Step 2: Prepare a blank solution. A blank is a reference solution that contains all the components except the analyte of interest. It is used to calibrate the instrument and account for any background absorbance.

To prepare the blank, use the same solvent and volume as your sample solution but exclude the dye or analyte. For example, if your sample solution is prepared in a cuvette with 1 cm path length and contains the dye, prepare a blank solution in another cuvette with the same solvent and volume but without the dye

Step 3: Insert the blank cuvette into the spectrometer and close the lid to ensure proper alignment.

Step 4: Set the spectrometer to the appropriate wavelength range and select the desired wavelength for your analysis. This wavelength should correspond to the absorption maximum of the dye you are measuring.

Step 5: Zero the spectrometer by adjusting the instrument settings or pressing the "Zero" button. This establishes the baseline absorbance using the blank solution as a reference.

Step 6: Remove the blank cuvette and replace it with the cuvette containing your sample solution. Ensure that the cuvette is properly aligned and close the lid.

Step 7: Record the absorbance value displayed on the spectrometer for your sample solution.

Step 8: Repeat the process for each of your prepared dilutions, ensuring that you replace the cuvette with the appropriate solution for each measurement.

Remember to clean the cuvettes between measurements, use appropriate sample volumes for accurate readings, and follow any specific instructions provided by the spectrometer manufacturer.

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TRUE

Explanation:

BECAUSE IT IS LIKE THE KEY WORD IN THAT SENTENCE.

Answer:

9.6m/s

Explanation:

Using the equation S=d/t where s=speed, d=distance, and t=time

plug in the known variables

S=120m/12.5s

S=9.6m/s

The value of resistor R that gives the circuit in the figure a time constant of 22 μs is 220 Ω.

The circuit that is in the figure is shown below:Given that time constant (RC) = 22 μs. To find the value of resistor R, we need to use the formula for the time constant:

RC = τ, where R is the resistance and C is the capacitance of the circuit.

Rearranging the above formula, we get:R = τ / C

Where τ is the time constant and C is the capacitance of the circuit.

From the figure, the capacitance is given as 0.1 μF

.Substituting the values of τ and C in the above formula, we get:

R = (22 × 10⁻⁶ s) / (0.1 × 10⁻⁶ F)

R = 220 Ω

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Answer:

There will  be a huge problem of holding the wire strands together, and the power losses will also be amplified.

Explanation:

The force per unit length on two current carrying conductors, lying parallel to each other is proportional to the product of the current through the conductors, and inversely proportional to their distance apart. This force is attractive if the current flows through these conductors in the same direction, and is repulsive if it flows in the opposite direction.

For the strand of wire that make up a high voltage wire bundle, there will be a force of attraction pulling the wires closer to each other, and they will experience the maximum pulling force possible, since they lie next to each other. This force helps to hold these wires in a high tension wire strand together, limiting the area, and reducing "skin effect."

In the case that this wires in the wire strand acts in opposite of the known behavior, the wires will repel and push each other apart. This pushing apart will increase power loss due "skin effect" which is increased by an increase in exposed surface area of the wire strands. This will pose a big problem for high tension transmission.

If you have 200 lbs of coal in your shed and you burn 1 lb a day, it will need 200 days for last.

Coal is a sedimentary rock formed from the remains of organic and combustible deposits. There are a number of benefits of coal in everyday life.

Based on research by geologists, coal was formed around 340 million years ago. Coal itself comes from the remains of plants that have decayed hundreds of millions of years ago.

It takes a very long time for coal to form again. Therefore, coal is a type of non-renewable natural resource that makes it relatively expensive.

The main benefit or use of coal is as fuel. The heat produced by coal is very high and can be converted into other energy. Therefore, coal is often used in life.

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The average energy density stored in the wave E(x, y, z, t) = 1000 sin(20π(y - ct)) i V/m can be found by computing the integral uE = (1/λ) ∫₀ˡᵥ uE(y) dy.

The average energy density stored in the wave, we need to compute the integral of the energy density uE(y) over a wavelength (λ) and divide it by the wavelength. The energy density uE is given by uE = (1/2)εE², where E is the electric field. In this case, the electric field E(x, y, z, t) is given by E(x, y, z, t) = 1000 sin(20π(y - ct)) i V/m.

To calculate the average energy density, we integrate uE(y) from 0 to λ and divide by λ, where λ represents the wavelength of the wave. Since the wave is propagating in the y-direction, we integrate uE(y) with respect to y. The integral becomes uE = (1/λ) ∫₀ˡᵥ (1/2)εE² dy.

Substituting the given electric field E(x, y, z, t) into the equation, we have uE = (1/λ) ∫₀ˡᵥ (1/2)ε(1000 sin(20π(y - ct)))² dy.

We can simplify the expression by using the trigonometric identity sin²θ = (1/2)(1 - cos(2θ)). Applying this identity, we get uE = (1/λ) ∫₀ˡᵥ (1/2)ε(1000²)(1 - cos(40π(y - ct))) dy.

Now we can evaluate the integral, which gives us the average energy density stored in the wave E(x, y, z, t) over one wavelength.

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Answer:

I'm not that busy solving but I'll tell you the formula that Force x distance is equal to work done

The work is done on a pumpkin when we lift it by 15 m with 24 N is 360 J

Work done is the amount energy gained (loosed) in bringing the body from initial position to final position. It is denoted by W and its SI unit is joule(J).  

i.e. Work(W) is force(F) times displacement(s).

W=F× s

When a body is displaced with 1 newton of force by 1 m, then we can say that work has been done on the body by 1 joule.

Writing for it's dimension,

W=F× s

Force has dimension [L¹ M¹ T²]

Displacement has dimension [L¹]

multiplying both the dimensions Force and Displacement  

we get,

dimension of Work [L² M¹ T²]

According to newton's second law of motion,

Force(F) is mass(M) times acceleration(a).

i.e. F=ma

Given,

Force = 24 N

Displacement = 15 m

W=F.s= 24*15 = 360 J

Hence work done on pumpkin is 360 J

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