0.92 kg of R-134a fills a 0.14-m^3 weighted piston–cylinder device at a temperature of –26.4°C. The container is now heated until the temperature is 100°C. Determine the final volume of R-134a.

Answer:

1. 38,500

2. 308,000

Explanation:

This would require a calculator. To find momentum, you multiply mass and velocity. You always want your mass to be measure in kilograms, but that is irrelevant in this question because they already are, it is just something to remember.

Answer:

Explanation:

the 40-watt bulb is going to require less energy to power.

The average acceleration of the motorcycle over the given distance is approximately 9.39 m/s².

To calculate the average acceleration of the motorcycle, we can use the formula:

Average acceleration = (final velocity - initial velocity) / time

First, let's convert the final velocity from km/h to m/s since the distance is given in meters. We know that 1 km/h is equal to 0.2778 m/s.

Converting the final velocity:

Final velocity = 78 km/h * 0.2778 m/s = 21.67 m/s

Since the motorcycle starts from rest (initial velocity is zero), the formula becomes:

Average acceleration = (21.67 m/s - 0 m/s) / time

To find the time taken to reach this velocity, we need to use the formula for average speed:

Average speed = total distance/time

Rearranging the formula:

time = total distance / average speed

Plugging in the values:

time = 50 m / 21.67 m/s ≈ 2.31 seconds

Now we can calculate the average acceleration:

Average acceleration = (21.67 m/s - 0 m/s) / 2.31 s ≈ 9.39 m/s²

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Answer:

Explanation:

Heat released by one litre of oil = 2.8 x 10⁷ J .

Let m gm  be the mass of water required .

heat absorbed in increasing the temperature to 100 degree

= mass x specific heat x rise in temp

= m x 4.2  x ( 100 - 20 ) = 336 m  

heat required in boiling of all the water

= mass x latent heat of evaporation

= m x 2268 = 2268 m

heat required to raise the temperature of steam from 100 to 300 degree

= mass x specific heat of steam x rise in temp

= m x 2.03 x 200

= 406 m

Total heat absorbed = 3010 m J

So 3010 m J = 2.8 x 10⁷ J

m = 9.30 x 10³ g

density of water = 10³ g per litre

volume of water in litre = 9.3 x 10³ / 10³

= 9.3 litre .

Answer:

Explanation:

C

Given what we know, we can confirm that option D,  Electromagnetic waves with high frequency are more energetic than electromagnetic waves with low frequency is true.

High-frequency waves are synonymous with short wavelengths. This means that the waves are oscillating much quicker and therefore carry more kinetic energy within them. This is transformed and released as electromagnetic radiation, which is the reason why high-frequency waves are more energetic than low-frequency electromagnetic waves.

Therefore, we can confirm that the statement "Electromagnetic waves with high frequency are more energetic than electromagnetic waves with low frequency" is true.

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Answer:

The mass will have the most KE at the midpoint of motion (velocity is a maximum)

Total Energy = KE + PE = constant

At zero displacement the potential energy equals zero and the kinetic energy is a maximum.

Answer:

I think it's point C but I'm not sure

Answer:

c

Explanation:

A conventional current is the flow of positive charges that move from higher to lower potential energy.

The above-given statement is a false statement.

Conventional current is the current that flows out of the positive terminal, through the circuit, and into the negative terminal of the source.

The y-component of the vector is approximately 14.67 meters.

To find the y-component of the vector, we need to use trigonometry. Given that the vector has a magnitude of 34 meters and an angle of 26 degrees, we can break down the vector into its x and y components.

Step 1: Identify the known values:

Magnitude of the vector (r) = 34 meters

Angle (θ) = 26 degrees

Step 2: Determine the y-component using trigonometry:

The y-component can be found using the formula:

y = r * sin(θ)

Step 3: Calculate the y-component:

Substituting the known values into the formula:

y = 34 * sin(26 degrees)

y ≈ 14.67 meters

Therefore, the y-component of the vector is approximately 14.67 meters.

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a.

The heat the engine extracts from its heat source in each cycle is 3.79 × 10⁴ J

The efficiency of the Carnot engine, ε = W/Q where W = work done per cycle = 2.5 × 10⁴ J and Q = heat extracted in each cycle.

Making Q subject of the formula, we have

Q = W/ε

Since ε = 66% = 0.66, we substitute the values of the variables into the equation for Q.

So, Q = W/ε

Q = 2.5 × 10⁴ J/0.66

Q = 3.79 × 10⁴ J

So, the heat the engine extracts from its heat source in each cycle is 3.79 × 10⁴ J

b.

The temperature of its heat source is 588.76 °C

Also, the efficiency of the Carnot engine, ε = 1 - T/T' where T = temperature of exhaust heat = 20° C = 273 + 20 = 293 K and T' = temperature of heat source.

Making T' subject of the formula, we have

T' = T/(1 - ε)

Since ε = 66 % = 0.66

Substituting the values of the variables into the equation, we have

T' = T/(1 - ε)

T' = 293 K/(1 - 0.66)

T = 293 K/0.34

T = 861.76 K

We convert this to Celsius.

T(K) = T(°C) + 273

T(°C) = T(K) - 273

T(°C) = 861.76 - 273

T(°C) = 588.76 °C

So, the temperature of its heat source is 588.76 °C

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Answer:

Your answer is wavelength

Answer:

Stars are the light bulbs of the universe.

Answer:

Stars are the recycling centers of the universe

Explanation:

I just did on edge C

The speed of the mass at the time the tension is measured is 6.12m/s

centripetal force - It is a force which makes a body follow a curved path.

It is directed inward towards center of rotation.

for example - gravitational force of sun is a centripetal force that keeps earth rotating around it.

the centripetal force on the swinging mass

Fc = mv²/r

where Fc is the centripetal force

m is the mass of body

v is the velocity

r is the radius

m = 1.5

r = 2.3 m

F = 24.5 N

To calculate the speed we put values in above equation

Fc = mv²/r

v = sqrt(Fc x r / m)

v = \(\sqrt[]{\frac{F *m}{r} }\)

\(v = \sqrt[]{\frac{24.5*1.5}{2.3} }\)

v = 6.12m/s

The speed of the mass at the time the tension is measured is 6.12m/s

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The given statement" Water-use rate is the total amount of water needed for turfgrass growth minus the quantity lost via evapotranspiration." is True. As Water-use rate refers to the total amount of water needed for turfgrass growth, taking into account the quantity lost through evapotranspiration.

Water use rate is the amount of water required for vegetation growth minus the amount of water lost through evapotranspiration. This rate should be determined by the area's soil type, climate, plant type, and maintenance practices. Water use rate is critical to watering programs since it aids in determining how much water is required by a plant. Evapotranspiration losses might be determined using an evapotranspiration device that tracks how much water is lost via the ground, plant leaves, or other vegetation surfaces.
Water-use rate refers to the total amount of water needed for turfgrass growth, taking into account the quantity lost through evapotranspiration. Evapotranspiration is the process by which water is transferred from the land to the atmosphere by evaporation from the soil and other surfaces and by transpiration from plants.

Water that evaporates into the atmosphere from the soil surface, the groundwater table's capillary edge, and land-based sources of water is referred to as evapotranspiration. Transpiration, or the flow of water through plants from the soil to the atmosphere, is also a component of evapotranspiration.

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The distance traveled by the Spacecraft is  2.3 x 10² m.

To have a constant velocity, the change in velocity or speed of the object must be zero.

Constant speed will elapse equal distance in an identical period of time as a result is an example of steady speed.

For a Spacecraft is traveling in inner planetary space at a constant velocity and a given time of motion, the distance traveled by the Spacecraft is calculated as follows;

Distance = speed x time

the speed is given as 24.21 m/s

the time of motion is given as 9.5 seconds

distance = 24.21 m/s  x 9.5 s

distance = 2.3 x 10² m

Thus, the distance traveled by the Spacecraft is  2.3 x 10² m.

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The complete question is below;

Spacecraft is traveling in inner planetary space at a constant velocity of 24.1 m/s. What it estimated distance traveled by the spacecraft in 9.50 seconds?

Get the coordinates of the points

(2, -3)(-3, 2)

Therefore,

Answer:

The acceleration due to gravity on the planet Fergie is 0.0123 m/s^2.

Explanation:

We want to find the acceleration due to gravity on the planet Fregie. Let it be g m/s^2.

Now, the acceleration due to gravity is defined through the following equation:

\(mg = GMm/R^2\)

where m is the mass of an object on the surface of the planet, M is the mass of the planet, R is the radius of the planet, and G is the universal Gravitational constant.

Subsituting values for M = 6.23*10^23, R = 5.79*10^7, G = 6.67*10^(-11), we get

g = 0.0123 m/s^2.

Thus the acceleration due to gravity on the planet Fergie is 0.0123 m/s^2.

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Answer:

The below diagram shows pure spectrum with white light

Explanation:

Please find attached photograph for your answer. The answer is c. 10.9 m.

The skidmarks you leave behind can be measured to determine

your displacement, the skid mark would be 10.9 meters long, therefore the correct answer is option C.

The rate of change of the velocity with respect to time is known as the acceleration of the object.

As given in the problem, you are driving at 15.0 m/s when you suddenly slam on the brakes to avoid a collision. You come to a complete stop. When you stop your acceleration is determined by your tires and the road conditions, and it is a constant -10.3 m/s2. The skidmarks you leave behind can be measured to determine your displacement.

Now using the third equation of motion,

v² - u² = 2×a×s

0 - 15² = 2 ×(-10.3)×s

s = 10.9 meters

Thus, the skid mark would be 10.9 meters long, therefore the correct answer is option C.

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In circular motion, the total acceleration has two components: the centripetal acceleration (a_c) and the tangential acceleration (a_t). The centripetal acceleration is directed towards the center of the circle, while the tangential acceleration is directed along the tangent to the circle at the point of interest.

θ = tan^(-1)(a_c/a_t) or θ = tan^(-1)(a_t/a_c)

1. If you define the angle (θ) between the total acceleration vector (a) and the tangential acceleration (a_t), you should use:

2. If you define the angle (θ) between the total acceleration vector (a) and the centripetal acceleration (a_c), you should use:

ANSWER:

2.95 * 10^7 meters

STEP-BY-STEP EXPLANATION:

Given:

mass of space vehicle (m) = 555 kg

mass of earth (M) = 5.98 * 10^24 kg

Gravitational force (F) = 255 N

G = 6.67 * 10^-11 N m^2/kg​^2

We calculate the distance using the gravitational force formula:

We substitute and solve for r, just like this:

They are at a distance of 2.95 * 10^7 meters

The magnitude of the sum A + B + C is 5

The term "vector" is used colloquially to describe constituents of particular vector spaces or some quantities that cannot be described by a single integer.

How to solve for the quantity

A = 15J + 20J

B= -20J

C= -10J

S= A + B + C = 15J + 20J -20J -10J

S = 5J

Therefore, S= 5

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The instantaneous velocity of the plate at 250,000 years is 5 mm/year.

The finite velocity of the plate for the entire million-year timespan is 2 mm/year.

The instantaneous velocity is the rate of change of displacement   with time. It measures the velocity at a specific period of time.

The instantaneous velocity of the plate at 250,000 years is 5 mm/year.

The finite velocity of the plate for the entire million-year timespan is calculated as follows;

\(v = \frac{2 \ km}{1 \times 10^6 \ year} = \frac{2 \times 10^6 \ mm}{1 \times 10^6 \ year} = 2 \ mm/year\)

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Answer:

Electrons repel one another - they will move "away" from the left side of the leftmost can- (the right can must become more negatively charged than the left can) -

B appears to be the best answer

The electrons move from the left soda can to the right soda can. The answer is (B).

When the negatively charged balloon is moved close to the left soda can, it will repel the negatively charged electrons in the soda can. This will cause the electrons to move away from the balloon and distribute themselves within the soda can.

Since the soda cans are in contact with each other, the excess electrons from the left soda can will be repelled by the negative charge on the balloon and will flow to the adjacent right soda can. The electrons will continue to move until there is no potential difference between the two cans, which means that they will stop flowing when both cans have the same amount of negative charge.

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Answer:

Problem:

a 5 kg dog jumps on table with a mass of 30 kg what is the average force that the table applies to the dog.

Note:

What ever is the force applied by the dog to the table, it will be the same force exerted by the table to the dog but in opposite direction. Study on the Newton's Third law of motion

Given Data:

m ( mass ) = 5 kg

a ( acceleration ) = 9.8 m/s²

F ( Force ) = ? unknown

Solution:

We will use the formula of Force ( F = m × a ) in order to solve the problem.

F = m × a

= 5 kg × 9.8 m/s²

= 49 kg·m/s²

= 49 N

Answer:

The table will exert 49 N of Force to the dog

The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)

The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.

This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.

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